Constant Pressure Water SupplyUnit · (4) Failure or damage caused by repair or remodeling performed without the consent of TERAL INC. (5) Failure or damage occurring when parts other

NX-LAT-e

Instruction Manual

Constant PressureWater Supply Unit

We would like to thank you very much for choosing the Water Supply Unit of TERAL INC.Do not operate, maintain, or check the water supply unit until this instruction manual is thoroughlyread and understood before use to ensure its safety and proper operation.For safety, make sure to follow all the warning instructions on the control panel and in this instructionmanual.Be sure to store this instruction manual carefully so that it can be referred to at anytime for operation,maintenance and checking of the water supplyunit.

Important Notice

Do not keep combustible materials such as the manual or other drawing inside thecontrol panel of the water supply unit (except when a drawing holder is inside).

To installersBe sure to give this instruction manual to the user that operates, maintains andchecks to water supply unit.

Warning

Scope of Guarantee

1. Free repair or replacement is limited to parts troubled or damaged due to imperfections in fabrication or the design of the machine delivered by TERALINC.

2. The scope of guarantee described above is limited to a mechanical guarantee of faulty parts. Expenses or other damage caused by failure are not compensated for by the guarantee.

3. An additional cost will be charged for consumables (parts that are expected to be consumed) and repairs due to the following failures ordamage.(1) Failure or damage caused by devices not delivered by TERAL INC.(2) Failure or damage occurring after the guarantee period.(3) Failure or damage caused by disasters such as fire, natural calamities,earthquake.(4) Failure or damage caused by repair or remodeling performed without the consent of TERAL INC.(5) Failure or damage occurring when parts other than those specified are used.(6) Failures or damage caused by use beyond the specified range.

4. TERAL INC. assumes no responsibility for damage caused by misuse or abuse of the water supply unit, regardless of whether or not the water supply unit is within the warrantee period. Expenses for sending engineers to cope with such damage will require a service fee.

5. When the cause of failure is not clear, measures will be determined upon consultation.

6. Parts used in the unit are subject to change for improvement without priornotice.In addition, we may use recycled parts that conform to our quality standard, or substitutes that are functionally equivalent.

Purpose of This Manual - Important Notice

1. The purpose of this manual is to provide detailed information as a guide for the correct operation and maintenance/checking of this product.This manual does not include content that particularly demands expert knowledge such asDisassembling and repairing. Contact TERAL INC. or service representative for repairs.

2. The content in this manual is intended for the followingpersonnel.· Personnel experienced in the operations of the water supply unit or those trained by such

personnel.· For electrical wiring, qualified electricians.

3. Since this manual mainly describes a standard model, if you purchase a special model, you may find descriptions that do not correspond to their features. In such a case, check the product features by referring to the specification or other documentation that comes with the product.

4. Product specifications and content of the instruction manual are subject to change without prior notice.

5. In this manual, descriptions of the water supply unit are made easy to understand by omitting some part or using abstraction. For that reason, some figures or drawings in this manual may look different from the real parts of the unit.

Table of Contents

1. Safety 1-11.1 Descriptions of Warning Indicationsand

Graphic Symbols ............................................1-1

1.2 Safety Precautions..........................................1-1

2. Configuration and Overview of Water Supply Unit 2-1

2.1 Names and Functions of Parts........................2-1

2.1.1 Names and Functions ofComponentsof Water Supply Unit ...........................2-1

2.1.2 Names and Functions of ControlPanel Elements ...................................2-3

2.1.3 Control Panel Components .................2-4

2.1.4 Control Board ......................................2-6

2.2 Water Supply Unit Specifications....................2-7

2.3 Control Panel Specifications...........................2-8

2.4 Specifications..................................................2-9

2.4.1 Standard Models (Pouring Model).......2-9

2.4.2 Special Model (Lift Model).................2-11

3. Installation 3-13.1 Before Using the Water Supply Unit ...............3-1

3.2 Hints on Installation ........................................3-2

3.3 Hints on Piping................................................3-3

3.4 Hints on Wiring ...............................................3-4

3.4.1 Electrical Wiring...................................3-4

3.4.2 Instrumentation ...................................3-5

4. Preparations for Operation 4-14.1 Check before Trial ..........................................4-1

4.1.1 Electric System ...................................4-1

4.1.2 Pump...................................................4-1

4.2 Turning the Power ON ....................................4-2

5. Trial 5-15.1 Check before Manual Operation .....................5-1

5.2 Confirming Automatic Operation.....................5-2

5.2.1 Auto-alternate operation(independent operation) type ..............5-2

5.2.2 Auto-Alternate ParallelOperationtype .....................................................5-3

6. Basic Operation and Display/Setting 6-16.1 Operating the Pump ....................................... 6-1

6.1.1 Selecting Operation Mode................... 6-1

6.1.2 Manual Operation................................ 6-1

6.1.3 Automatic Operation ........................... 6-1

6.2 Selecting a Receiver Tank.............................. 6-2

6.3 Operating the Inflow Solenoid Valve............... 6-3

6.4 Displays on the Display Section ..................... 6-4

6.4.1 Operating the Basic InformationDisplay....................................................6-5

6.4.2 Operating the Alarm Log Display ........ 6-6

6.4.3 Operating the Pump InformationDisplay....................................................6-6

6.5 Setting Parameters......................................... 6-7

6.5.1 Parameter List..................................... 6-7

6.5.2 How to Operate the Parameter Setting................................................. 6-8

6.5.3 Basic Parameters.............................. 6-10

6.5.4 Extended Parameters ....................... 6-11

6.6 Setting the Preset Starting Value for the Pressure Switch............................................ 6-14

6.7 Setting Discharge Head (ConstantPressure)6-15

7. Maintenance/Checking 7-17.1 Hints on Maintenance/Checking ..................... 7-1

7.2 Inspection Mode ............................................. 7-2

7.3 Maintenance Check List ................................. 7-3

8. How to Handle Trouble 8-18.1 Handling Alarms ............................................. 8-1

8.1.1 Checking the alarm content ................ 8-1

8.1.2 Resetting the Alarm............................. 8-1

8.1.3 Stopping the Buzzer............................ 8-1

8.2 Causes of Failures andCorrective Actions ..... 8-2

9. Special Models 9-19.1 Lift Model........................................................ 9-1

9.2 Freeze -Proof Model (For BQNXF Type Control Panel) .................................................................9-2

1-1

1. SafetyThoroughly read “Safety” in this manual beforeuse.The following descriptions are very important, helping to safely and properly use the water supply unit and prevent hazards and damage.

1.1 Descriptions of Warning Indications and Graphic SymbolsThe indications for warning are divided into four classes in the instruction manual according to the degree or level of hazard seriousness (the degree or level of injury or damage and the emergency of warning). In addition, how the hazard can be avoided is communicated to users through graphic symbols.This manual uses the following displays. Read the body of this manual after thoroughly understanding the following.

Descriptions of Warning Indications Descriptions of Graphic Symbols

1.2 Safety PrecautionsBe sure to observe hints mentioned here that describe important points relating tosafety.

WarningMove the unit properly according tothe instructions

for lifting.Otherwise it may cause falls, injury, or damage.

Do not use or work on the water supplyunit being lifted up.

If falling, the unit may cause injury or damage.

Operation of the water supply unit should be allowed only for personnel with permission from the supervisor on site.Operation by inexperienced personnel could result in unexpected accidents.

The water supply unit should be installed/maintained/checked only by personnel trained to handle the unit.Operation by inexperienced personnel could result in unexpected accidents.

Electrical work should be performed by qualified electricians only.Otherwise it may cause electric shock, fire, or failure.

Perform wiring safely and securely with wiringdevices of good quality in accordance with the ministerial ordinance on the technical standard forelectricalequipment and Interior WiringCode.Otherwise it may cause electric shock or fire.

Before starting wiring work, be sure to shut off the power source and make sure that thepilot lamp islighted OFF.Otherwise it may cause electric shock.

Be sure to provide an earth leakage breaker dedicated to this unit at the source of the power.Otherwise it may cause electric shock or fire.

DangerDo not touch live parts inside and outside the control panel after the main power is turned ON.A high voltage is applied to live parts and presents a serious electric shock hazard.

Prohibi-tion

Don't No Dis- No Wet No Touch! assem- Hand! Wet!

bling!These graphic symbols indicate prohibition (what you must not do).This graphic symbol indicates an mandatory action (what you

Mandatory must do).

Caution Electric Rotating High Shock Part Temp.Caution Caution Caution

These graphic symbols indicate caution.

Warning Indication Description

DangerIndicates an imminently hazardoussituation which, if the user fails to follow the procedure or instructions, could result in death or serious injury.

WarningIndicates a potential hazardous situationwhich, if the user fails to follow the procedure or instructions, could result in death or serious injury.

CautionIndicates a potential hazardous situationwhich, if the user fails to follow the procedure or instructions, could result in minor or moderate injury or physical damage.

Note Indicates information that needs special attention or emphasis.

1-2

WarningConnect the grounding wire securely and be sure to perform grounding.Otherwise it may cause electric leaks or electric shock.

Do not connect a grounding wire to a gas pipe or a water pipe.

It may cause electric shock, explosion, or fire, and is prohibited bylaw.

Make sure that wiring terminals and connections are not loose.

Otherwise it may lead to fire or electrical shock.

Be sure to stop the pump and shut off the power source of the panel board beforemaintaining/checking.Otherwise it may cause electric shock, injury, damage, or water leakage.

When operating or inspecting the unit, be sure to notify the operators concerned and make sure that no one is in dangerous areas.Otherwise it may lead to unexpectedaccidents.

Be sure to shut off the power source before checking by manually turning the pump.

Otherwise it may cause injury or damage.

Do not touch the water supply unit when the power is ON, except for the parts required for operation.Otherwise it may cause electric shock orinjury.

Be sure to close the control panel lid when the power is turned ON.Otherwise it may cause electric shock or fire.

Do not put fingers, or foreign objects, etc. into the opening or rotating section of the motor duringoperation.Otherwise it may cause injury or damage.

Do not operate the unit continuously with the pump shut up for a minute or more.Otherwise there is a risk of damage and steam outbursts caused by the increased temperature of the pump and increased internalpressure.

Do not use the water supply unit when there is a problem with its operation or parts.

Otherwise it may lead to injury, failure, or accidents.

Contact the vendor or service counter designated by TERAL INC. for inspection that requires disassembling of the unit, part replacement, or repairs.For work requiring expert knowledge, operation by inexperienced personnel could result in accidents or failure.

Caution

Do not use the unit in the range other than specified.It may lead to electric shock, fire, water leakage or failure.

Do not use a wrong power supply frequency.60Hz operation for 50Hz model units may lead to overload. 50Hz operation for 60Hz model units may lead to performance degradation.

Do not use the unit in a single configuration in important facilities or areas that directly relate to life support.There is a risk of cuts in water supply due to failure. Be sure to provide astandby unit.

Do not use the unit for pure water transfer. There is a risk of entry of impurities.

When unpacking, check that the unit is not upside down, be careful of the nails, and do the work carefully.Otherwise it may lead to injury or damage.

For an installation environment of the unit, strictly observe theinstructions for installation.

Otherwise it may lead to early failure.

Be sure to provide drainage to and waterproof the floor on which the unit is installed.

Otherwise it may lead to greater damage when water leakage occurs.

Detach companion flanges from the pump to screw the pipe in.

Otherwise it may cause damage or water leakage.

Do not merge suction pipes.Otherwise the unit may fail to operate properly.

Do not use piping material that will rust.Otherwise it may cause damage to the unit.

Do not put other cables or control lines in the same tubes or conduits.

Otherwise it may lead to misoperation of this unit and other equipment.

Provide the dedicated grounding electrode for the inflow solenoid valve.

Otherwise it may not operate properly.

Do not step on the control panel, pump orpiping.Otherwise it may lead to injury or damage.

Do not allow water on the control panel ormotor.Otherwise it may cause electric shock, water leakage, or failure.

1-3

CautionWhen working on conduit knockouts and guiding wires, make protectors ready and be careful of cut edges of steel plates.Otherwise it may lead to injury.

Make the settings of the control panel properly.according to the condition of use.

Otherwise correct operation may not be possible.

Operate the parts carefully.Otherwise it may lead to injury or damage.

Use both hands and open or close the control panel lid carefully.

Otherwise it may lead to damage.

Flush the inside of piping sufficiently before operation.Otherwise foreign objects in the piping system may enter, and supply of water mixed with foreign objects may cause accidents or pump failure.

Do not perform racing of the pump (operation without priming).

It may lead to damage of the sliding part in thepump.

Do not operate the unit in automatic mode with the TJ valve closed.

Otherwise, unable to operate properly, the unit may be damaged.

Do not touch cooling fans in the motor and control panel during operation or immediately after the startofoperation.There is a risk of burning because they are heated.

Do not put cloth, etc. over the motor or control panel.There is a risk of overheating or fire.

Do not operate the water supply unit with tools or other objects left on it.

Otherwise it may lead to injury or damage.

If a non-recoverable trouble alarm appears or in the event of some abnormality, contact TERAL INC. or service representative.Otherwise it may lead to accidents.

Make sure to carry out inspection according to the maintenance check list.Otherwise it is more likely that failure to prevent trouble will cause accidents.

Replace gaskets and O-rings for inspection by disassembling.Otherwise it may lead to water leakage

Before disassembling, be sure to close the inlet and outlet valves and discharge pressure water in the pump and piping.Otherwise it may lead to accidents caused by wateroutbursts.

Do not perform an insulation resistance test on the control panel (When testing the insulation resistance

of the motor, disconnect the wires from the controlpanel.)Otherwise it may lead to damage on the control panel.

If the unit will not be use for a long period of time, store the unit after discharging water inside and powering OFF.Otherwise it may lead to insulation deterioration and cracks byfreezing.

2-4

9 5 2 4 1

106

8

7

3

11

12

1 14 13 4 10 9

6

7

11

2

12

2. Configuration and Overview of Water Supply UnitThis section describes standard models. If you purchase a special model, you may find some descriptions are different. In such a case, check the product features by referring to the specification or other documentation that comes with the product. Note that the following mainly describes the unit with two pumps.

2.1 Names and Functions of Parts2.1.1 Names and Functions of Components of Water Supply Unit(1) NX-LAT water supply unit

Control panelA panel that controls and supplies power to the pump. Divided into two types - BQNXF and NSX - according to its functionality. ( see 2.2)The BQNXF type incorporates a control board that monitors the operating condition of pumps, and automatically start/stop pumps.PumpSupplies water by rotating the vane using themotor.Pressure transmitterConverts the pressure into an electric signal that can be used for control operation.Pressure tankBuffers the pressure fluctuation of the pump at starting/stopping. Also retains the pressure in the piping when the pump is in stoppage.Junction PipeBrings the discharge pipes of the two pumpstogether.Discharge elbowContains a buffering check valve. And a flow switch is attached.Flow switchOutputs a signal to stop the pump when the level of water supply becomes equal to or lower than the flow rate set.High temperature sensorOutputs a signal to stop the pump when water temperature becomes equal to or higher than the preset temperature.Priming plugA plug for priming of the pump.TJ valveA valve for draining the pressure tank when maintaining the tank or pressure transmitter.Pump air bleeding plugA plug for air bleeding of the pump.Pump drainA drain for discharging water in thepump.Pressure switchSets the starting pressure in independent operation (NSX type controlpanel).Pressure gaugeChecks the discharge pressure in independent operation (NSX type control panel).

Independent operation Auto-alternate operationAuto-alternate parallel operation

Fig. 2-1-2(b) NX-LAT type water supply unit

2-5

Reset

1 2Buzzer

stop

1 2 Setting

2 1 13 8 10 9

113 #1 operation #2 operation Power

#1 Block #2 Block Failure 12

4 #1 Manual #2 Manual

Confirm Back 14

5 15

16

7 6 18 19 17

Fig. 2-1-2(a) Operation panel on the BQNXF type controlpanel (Ex.: with two pumps)

2.1.2 Names and Functions of Control PanelElements

(A) Operation panel on the BQNXF type control panel

DisplayDisplays various information on the water supply unit. ( see 6.4)Operation selector switchOperate this switch to change the operation mode of the water supply unit. ( see 6.1)

Indicator for selected operationDisplays the operation mode currently selected.Tank selector switchOperate this switch to switch from one receiver tank to another. ( see 6.2)Indicator for selected tankDisplays the receiver tank currently selected.

Solenoid valve operation selector switchOperate this switch to change the solenoid valve operation mode. (see 6.3)

Indicator for selected solenoid valve operationDisplays the solenoid valve operation currently selected.Indicator for #1 operationLights while pump #1 is in operation. Blinks when checking low water rate stop while pump #1 is running in automatic operation mode.Indicator for #2 operationLights while pump #2 is in operation. Blinks when checking low water rate stop while pump #2 is running in automatic operation mode.Indicator for #1 Block, #2 BlockLights when the pump is set to “operation blocked.” ( see 6.5)Power lampLights while powered ON.Flashes while in inspection mode (see 7.2).Failure indicatorBlinks when an alarm is signaled.#1 Manual/Confirm switch Manually performs the operation of#1 pump.

Manual Stop Auto Operation selector

No.1 No.2

Com mon

Tank selector

Man. Man. Auto Open Close

Solenoid valve

operation selector

And used as the “Confirm” switch in setting mode, etc.#2 Manual/Back switchManually performs the operation of#2 pump.And used as the “Back” switch in setting mode, etc.Reset switchUsed for canceling the alarm.When an alarm appears, press this button after the cause of an alarm is eliminated to cancel.Buzzer stop switchUsed for manually stopping the buzzer when an alarm appears.And used together with the cursor switch 1 for basic information display changeover operation.Setting switchUsed for switching to and canceling the setting mode ( see 6.5).Cursor switch 1Used for operations such as display changeover, setting, and pumpinformation display for #1 pump.Cursor switch 2Used for pump information display operation for #2 pump.

2-6

(B) Operation panel on the NSX type control panel

Timer for checking low flow water for stoppage Sets the time for checking low flow water for stoppage. Normally, this timer is set to 60 seconds.Operation selector switchSelects between Auto, Stop and Manual.Normally, this switch is set to Auto. When it is set to Manual, the pump is activated.

2.1.3 Control Panel Components

(A) BQNXF type control panel

(1) Opening/closing the lidOpening the lid.Put your hands onto handles on both sides of the lid to pull the lid down to your side. Make force on both sides even as much as possible.Hold on to the lid until it comes to a stop position.Closing the lid.Put your hands around the handles on both sides of the lid to push the lid up to close.Push the lid in place until its latch is secured.

WarningA high voltage is applied to parts in the control panel when powered ON andpresents serious hazards.The control panel lid should be opened only by qualified electricians because there is a risk of electric shock.

Caution

Open or close the lid with both hands, and make force applied to both sides of the lidas uniform as possible.If force applied to the right and left sides of the lid becomes uneven in such a caseas opening or closing the lid by holding a handle on one side, the lid deforms bybeing twisted and may be disconnected ordamaged.

CautionWhen opening the lid, hold it until it comes to a stopposition.If the lid is released in the middle of opening, a closing impact may cause damage to parts or the lid itself.

Stop position

Fig. 2-1-3(a) How to open the lid of theBQNXF type control panel

Handle

1

2

Fig. 2-1-2(b) NSX type control panel operation section

Man

ual

St

op

A

uto

2-7

SC1 SC1' SC2' SC2

Body side(For three-phase power

supply)

ELCB1 ELCB2

MC1 MC2TB1

C1 SC1 SC2 C2

Body side (For single-phase

power supply)

ELCB1 ELCB2

MC1 MC2TB1

Lid sideI/O terminal block

Control board Protection cover

Operation board

MC

TM

SN

(2) Components

(B) NSX type control panel

(1) Opening/closing the lidThe lid is of removal type. Put your hands on the lid that has hooks on its upper and lower sections, and remove.

(2) Components

Descriptions of Codes

MC Electromagnetic switchTM TimerSN Select switch

(Operation selectorswitch)

Fig. 2-1-3(c) Componenst of the NSX type control panel

Descriptions of Codes

TB1 Power terminal blockMC1, 2 Electromagnetic switchELCV1, 2 Earth leakage breaker (option)SC1, 2 Phase advanced condenser (option)SC1’, 2’ Phase advanced condenser (option)

For 7.5kW, 50Hz onlyC1, C2 Capacitor for single-phase motoroperation

Fig. 2-1-3(b) Components of the BQNXF type control panel

2-8

I/O terminal blockOperating

power switch ON

OFF CN18

CN1 CN16 CN17

Operating power switch CN14 CN15

CN2 CN12 CN13

CN5 CN10 CN11

CN3 CN4

CN6 CN7 CN8 CN9

Fig. 2-1-4 Control board arrangement

2.1.4 Control BoardThe following shows the details of the BQNXF type control panel.

Table 2-1-4 (a) Connector applicationNo. Application No. Application No. Application

CN1 Device in panel CN7 Device in panel*1 CN13 #2 (thermal) flow switch

CN2 Device in panel CN8 Device in panel*1 CN14 (Not used)CN3 (Not used) CN9 Device in panel CN15 (Not used)

CN4 (Not used) CN10 Pressure transmitter 1 CN16 High temperature sensor #1

CN5 (Not used) CN11 ---- CN17 High temperature sensor #2

CN6 Device in panel CN12 #1 (thermal) flow switch CN18 Low temperature

sensor *2

*1 Connected only when an independent earth leakage breaker is incorporated.*2 Low temperature sensor connected in the case of freeze-proof model (special model) only.

Table 2-1-4 (b) I/O terminal block codes and applicationCode Application Code Application

IL1,IL2 Interlocking signal B1 to B5 Alarm signal output

1E0 to 1E4 Electrode bars for receiver tank #1 level detection BC Common for alarm signal output

2E0 to 2E4 Electrode bars for receiver tank #2 level detection VR,VT Power for alarm (power voltage)

1N1,1N2 Electrode bars for controlling the solenoid valve of receiver tank #1 RH,TH*5 Freeze prevention heater

(power voltage)

2N1,2N2 Electrode bars for controlling the solenoid valve of receiver tank #2 SVC,SV1 Solenoid valve of receiver tank #1

(power voltage)

M1,M2 Pump #1/#2 operation signals SVC,SV2 Solenoid valve of receiver tank #2 (power voltage)

MC Common for operation signal*5 Freeze prevention heater connected in the case of freeze-proof model only (special model).

2N2

2N1

2E4

2E3

2E2

2E1

2E0

1N2

1N1

1E4

1E3

1E2

1E1

1E0

IL2

IL1

VT

VR

SVC SV

2

SVC SV

1

RH TH BC B5

B4

B3

B2

B1

MC

M2

M1

WarningThere is a risk of electric shock.Do not remove the protection cover on the control board or the cover of the I/O terminal block when powered ON.

2-9

2.2 Water Supply Unit SpecificationsSee Standard Model sections for standard models. If any modification is made as requested as a special model, see its specifications such as dimensions.

Table 2-2 Standard model, water supply unitOperation mode Independent operation Auto-alternate operation Auto-alternate paralleloperation

Control system NX-LAT Constant pressure operation control

Applicableliquid

Quality Fresh waterTemperature 0 to 40 C

Installation environment

Indoor (0 to 40 )/Humidity: 85 % or less (not condensing)/Altitude: 1,000 m or less

Lift condition Pouring (up to pouring head of 5 m)*1

Pump (Material)

Stainless horizontal multistage centrifugal pump Model NX (Impeller: SUS304, Casing: SCS13, Main shaft: SUS304)

Motor

Type Totally-enclosed fan-cooled type for indoor useProtection

method IP44

Number of electrode bars 2 electrode bars

Companion flange Dedicated type companion flange

Supply powerSingle-phase100V: 0.4kW Single-phase200/200-220V: 0.75kW Three-phase 200/200-220V: 0.4 to 7.5 Kw

Color Common base: Munsell N-5Pressure tank: Munsell 10Y5.5/0.5

Pressure tank Model DPT10 (10 L diaphragm type pressure tank)

Pressure detection Pressure switchPressure transmitter

Transmission method: 5V DC, three-wire Output voltage: 0.5 to 3.5 V DC

Control panel

Model NSX type BQNF typeMotor

Protection 1E thermal 2E thermal(1E thermal for single-phase motor model)

Normal indication -

Through indicators: Power supply, pump operation (ea.),pump operation blocked (ea.), and failure (collective)

Displays include: Discharge pressure, cum. run time (ea.),cum. number of starts time (ea.), number of starts time on the previous day, and alarm log (last 5).

Failure displays -

Receiver tank full, receiver tank low, racing prevention, electrode failure, starting frequency failure, pressure transmitter 1 failure, EEPROM error, overload (ea.), discharge pressure abnormaldrop (ea.), high temperature (ea.), and (thermal) flow switch failure (ea.)

External outputs -

Power for alarm (power voltage for voltage), inflow solenoid valve output (power voltage for voltage), and operation/failure signal (no-voltage, normally open contact).

External inputs - External stop signal (interlock): conforms to a/b contact.

*1 For suction, lift models allow lifting operation of 4 m for actual head and 6 m (at a water temperature of 20 C) for total head. Note that the water supply unit in independent operation does not conform to lift specifications

CautionDo not use the unit in conditions other than thosespecified.Otherwise electric shock, fire, water leakage, or failure mayoccur.

Note Contact us for pouring head of 5 m or more.

2-10

2.3

Table 2-3 Control panel specificationsItem Specifications

0Specifications

1Specifications

2Specifications

3Specifications

4Specifications

5Specifications

6Specifications

DXControl panel model Independent BQNXF

Control method NSX Independent/auto-alternate/auto-alternate parallelCasing material ABS resins ACS resins + steel plate Steel plate

Color Black(Resin color) light gray (resins)/chromate-plated (steel plate) Munsell 5Y7/1

semi-luster

Output range

Single phase 100V 0.4kW 0.4kWSingle phase 200/200-220V (50/60Hz) 0.75kW 0.75kWThree-phase 200/200-220V (50/60Hz) 0.4 to 3.7kW 0.4 to 7.5kW

Circ

uitc

onfig

urat

ion Earth leakage breaker

Main pump - - - - - -Individual

pump system - - - - -Motor protection - 1E thermal 2E thermal (1E thermal for single-phase motor model)

Phase advanced capacitor N2 type - - - -Double receiver tank circuit Switchable on

the panel -

Inflow solenoid valve circuit Operatable on the panel -

Electrode bars 5P circuit - -

Func

tion

Pump racing prevention - -Auto-switching for failure - - (Except in independentoperation)Pump cont. running prevention - - (Except in independentoperation)Pump running time equalizer - - (Except in independentoperation)Freeze-prevention running - -

Output stop signal (interlock) acceptance

Conforms to a/b-contact -

Buzzer stop time setting 0 to 60 minuts, no stop -

Tank full/low alarm auto reset setting - -

Inflow solenoid valve auto-alternate setting - -

Inspection Mode - -Alarm buzzer - -

Buzzer stop switch - -

Con

trolp

anel

disp

lays

Ammeter/Voltmeter With red pointer - -

Indi

cato

r Power supply - -Operation (for ea. pump) - -

Block (for ea. pump) - -Failure (collective) - -

Dis

play

Discharge pressure Per m H2O -Cum. run time (for ea. pump) per hour -

Cum. number of starts time (for ea. pump) per one time -

Number of starts time of the unit

Number of starts time on the previous

day

-

Alarm log Last 5 -

Failu

re

Receiver tank full No. E001 -Receiver tank low No. E002 -

Racing prevention No. E003 -Electrode bar failure No. E004 -

Starting frequency failure No. E006 -Pressure transmitter 1

failure No. E051 -

EEPROM error No. E080 -Overload (ea.) No. E#01 -

Discharge pressure abnormal drop (ea.) No. E#02 -

Electrical leak (ea.) No. E#03 - - - - -High temperature (ea.) No. E#04 -

(Thermal) flow switch failure (ea.) No. E#05 -

Exte

r-na

lout

put

Power for alarm Power voltage -Freeze prevention heater

output Power voltage -

Inflow solenoid valve output Power voltage -

Operation signal Voltageless a-contact - (ea.)

Failure signal Voltageless a-contact - (5 points: pattern 0 to 4)

indicate features provided and optional features.* 1 “E006” and “En04” can be set to non-detection. See 6.5 Parameter Setting.* 2 “#” is the number of a particularpump.* 3 For patterns of alarm signal output, see 6.5 Parameter Setting.

2-11

2.4 Specifications2.4.1 Standard Models (Pouring Model)(1) NX-LAT water supply unit

Auto-alternate operation (Pouring model)

Frequ-ency Model

Standard Specifications Specified rangeCharged pressure in

the pressure tank MPa (kgf/cm2)

Watersupply m3/min

Total headm

Stopping pressure MPa (kgf/cm2)

Water supply m3/min

Preset startingvalue selected

range m

50Hz

NX-LAT252-5.4SD-e (*) 0.06 21 0.28 (2.9) 0.02 to 0.08 14 to 25 0.12 (1.2)NX-LAT321-5.4SD-e (*) 0.1 13 0.18 (1.8) 0.02 to 0.12 10 to 15 0.07 (0.7)NX-LAT322-5.75S2D-e (*) 0.1 27 0.36 (3.7) 0.02 to 0.13 19 to 32 0.16 (1.6)NX-LAT252-5.4D-e (*) 0.06 21 0.28 (2.9) 0.02 to 0.08 14 to 25 0.12 (1.2)NX-LAT321-5.4D-e (*) 0.1 13 0.18 (1.8) 0.02 to 0.12 10 to 15 0.07 (0.7)NX-LAT322-5.75D-e (*) 0.1 27 0.36 (3.7) 0.02 to 0.13 19 to 32 0.16 (1.6)NX-LAT323-51.1D-e (*) 0.1 40 0.52 (5.3) 0.02 to 0.14 28 to 47 0.25 (2.5)NX-LAT324-51.1D-e (*) 0.1 43 0.57 (5.8) 0.02 to 0.13 31 to 51 0.26 (2.7)NX-LAT401-51.1D-e (*) 0.2 19 0.29 (3.0) 0.02 to 0.25 15 to 26 0.12 (1.2)NX-LAT402-51.5D-e (*) 0.2 26 0.37 (3.8) 0.02 to 0.25 19 to 33 0.17 (1.7)NX-LAT402-52.2D-e (*) 0.2 40 0.52 (5.3) 0.02 to 0.25 28 to 46 0.24 (2.4)NX-LAT403-53.7D-e (*) 0.2 61 0.75 (7.6) 0.02 to 0.25 41 to 66 0.35 (3.6)NX-LAT404-55.5D-e 0.2 76 0.92 (9.4) 0.02 to 0.25 50 to 81 0.44 (4.5)NX-LAT502-51.5D-e (*) 0.28 18 0.30 (3.1) 0.02 to 0.31 16 to 28 0.13 (1.3)NX-LAT502-52.2D-e (*) 0.3 26 0.45 (4.6) 0.02 to 0.33 24 to 40 0.21 (2.1)NX-LAT503-53.7D-e (*) 0.3 48 0.71 (7.2) 0.02 to 0.37 38 to 62 0.33 (3.4)NX-LAT503-55.5D-e 0.3 60 0.78 (8.0) 0.02 to 0.40 42 to 68 0.37 (3.8)NX-LAT504-57.5D-e 0.3 77 0.95 (9.7) 0.02 to 0.40 52 to 83 0.44 (4.5)NX-LAT652-53.7D-e 0.45 26 0.39 (4.0) 0.02 to 0.55 20 to 35 0.18 (1.8)NX-LAT652-55.5D-e 0.45 39 0.53 (5.4) 0.02 to 0.60 28 to 47 0.25 (2.5)NX-LAT653-57.5D-e 0.45 57 0.75 (7.6) 0.02 to 0.61 41 to 66 0.35 (3.6)

60Hz

NX-LAT252-6.4SD-e (*) 0.06 23 0.30 (3.1) 0.02 to 0.08 15 to 27 0.13 (1.3)NX-LAT322-6.4SD-e (*) 0.1 16 0.30 (3.1) 0.02 to 0.10 15 to 27 0.13 (1.3)NX-LAT322-6.75S2D-e (*) 0.1 26 0.34 (3.5) 0.02 to 0.14 18 to 31 0.15 (1.5)NX-LAT252-6.4D-e (*) 0.06 23 0.30 (3.1) 0.02 to 0.08 15 to 27 0.13 (1.3)NX-LAT322-6.4D-e (*) 0.1 16 0.30 (3.1) 0.02 to 0.10 15 to 27 0.13 (1.3)NX-LAT322-6.75D-e (*) 0.1 26 0.34 (3.5) 0.02 to 0.14 18 to 31 0.15 (1.5)NX-LAT323-61.1D-e (*) 0.1 41 0.51 (5.2) 0.02 to 0.14 27 to 45 0.24 (2.4)NX-LAT323-61.5D-e (*) 0.1 48 0.58 (5.9) 0.02 to 0.14 31 to 52 0.27 (2.8)NX-LAT401-61.1D-e (*) 0.2 19 0.29 (3.0) 0.02 to 0.25 15 to 26 0.13 (1.3)NX-LAT402-61.5D-ee (*) 0.2 28 0.40 (4.1) 0.02 to 0.25 21 to 36 0.18 (1.8)NX-LAT402-62.2D-e (*) 0.2 41 0.58 (5.9) 0.02 to 0.25 31 to 51 0.26 (2.7)NX-LAT402-63.7D-e (*) 0.2 59 0.71 (7.2) 0.02 to 0.25 38 to 62 0.33 (3.4)NX-LAT403-63.7D-e (*) 0.2 65 0.84 (8.6) 0.02 to 0.25 46 to 74 0.40 (4.1)NX-LAT403-65.5D-e 0.2 79 0.91 (9.3) 0.02 to 0.25 49 to 79 0.43 (4.4)NX-LAT501-61.5D-e (*) 0.3 15 0.24 (2.4) 0.02 to 0.38 12 to 21 0.10 (1.0)NX-LAT502-62.2D-e (*) 0.3 27 0.41 (4.2) 0.02 to 0.36 22 to 37 0.19 (1.9)NX-LAT502-63.7D-e (*) 0.3 47 0.64 (6.5) 0.02 to 0.40 35 to 57 0.30 (3.1)NX-LAT503-65.5D-e 0.3 67 0.91 (9.3) 0.02 to 0.40 49 to 79 0.43 (4.4)NX-LAT503-67.5D-e 0.3 77 0.93 (9.5) 0.02 to 0.40 51 to 81 0.44 (4.5)NX-LAT652-63.7D-e 0.45 24 0.37 (3.8) 0.02 to 0.53 19 to 33 0.17 (1.7)NX-LAT652-65.5D-e 0.45 42 0.59 (6.0) 0.02 to 0.55 32 to 52 0.27 (2.8)NX-LAT653-67.5D-e 0.45 59 0.83 (8.5) 0.02 to 0.56 45 to 72 0.39 (4.0)

Note) (*) indicates a model to which independent operation is applied. No “D” at the end of the model name.

Auto-alternate parallel operation (Pouring model)

Frequ-ency Model



Watersupply m3/min

Total headm


Water supply m3/min

Preset startingvalue selected

range m

50Hz

NX-40LAT252-5.4SW-e 0.12 20 0.28 (2.9) 0.04 to 0.16 14 to 25 0.12 (1.2)NX-50LAT321-5.4SW-e 0.2 12 0.18 (1.8) 0.04 to 0.24 10 to 15 0.07 (0.7)NX-50LAT322-5.75S2W-e 0.2 26 0.36 (3.7) 0.04 to 0.27 19 to 32 0.16 (1.6)NX-40LAT252-5.4W-e 0.12 20 0.28 (2.9) 0.04 to 0.16 14 to 25 0.12 (1.2)NX-50LAT321-5.4W-e 0.2 12 0.18 (1.8) 0.04 to 0.24 10 to 15 0.07 (0.7)NX-50LAT322-5.75W-e 0.2 26 0.36 (3.7) 0.04 to 0.27 19 to 32 0.16 (1.6)NX-50LAT323-51.1W-e 0.2 40 0.52 (5.3) 0.04 to 0.28 28 to 47 0.25 (2.5)NX-50LAT324-51.1W-e 0.2 42 0.57 (5.8) 0.04 to 0.26 31 to 51 0.26 (2.7)NX-65LAT401-51.1W-e 0.4 19 0.29 (3.0) 0.04 to 0.50 15 to 26 0.12 (1.2)NX-65LAT402-51.5W-e 0.4 26 0.37 (3.8) 0.04 to 0.50 19 to 33 0.17 (1.7)NX-65LAT402-52.2W-e 0.4 40 0.52 (5.3) 0.04 to 0.50 28 to 46 0.24 (2.4)NX-65LAT403-53.7W-e 0.4 61 0.75 (7.6) 0.04 to 0.50 41 to 66 0.35 (3.6)NX-65LAT404-55.5W-e 0.4 76 0.92 (9.4) 0.04 to 0.50 50 to 81 0.44 (4.5)NX-65LAT502-51.5W-e 0.56 17 0.30 (3.1) 0.04 to 0.61 16 to 28 0.13 (1.3)NX-65LAT502-52.2W-e 0.6 26 0.45 (4.6) 0.04 to 0.65 24 to 40 0.21 (2.1)NX-65LAT503-53.7W-e 0.6 48 0.71 (7.2) 0.04 to 0.74 38 to 62 0.33 (3.4)NX-65LAT503-55.5W-e 0.6 60 0.78 (8.0) 0.04 to 0.80 42 to 68 0.37 (3.8)NX-65LAT504-57.5W-e 0.6 76 0.95 (9.7) 0.04 to 0.80 52 to 83 0.44 (4.5)NX-80LAT652-53.7W-e 0.9 26 0.39 (4.0) 0.04 to 1.08 20 to 35 0.18 (1.8)NX-80LAT652-55.5W-e 0.9 38 0.53 (5.4) 0.04 to 1.17 28 to 47 0.25 (2.5)NX-80LAT653-57.5W-e 0.9 56 0.75 (7.6) 0.04 to 1.20 41 to 66 0.35 (3.6)

60Hz

NX-40LAT252-6.4SW-e 0.12 22 0.30 (3.1) 0.04 to 0.16 15 to 27 0.13 (1.3)NX-50LAT322-6.4SW-e 0.2 16 0.30 (3.1) 0.04 to 0.21 15 to 27 0.13 (1.3)NX-50LAT322-6.75S2W-e 0.2 26 0.34 (3.5) 0.04 to 0.28 18 to 31 0.15 (1.5)NX-40LAT252-6.4W-e 0.12 22 0.30 (3.1) 0.04 to 0.16 15 to 27 0.13 (1.3)NX-50LAT322-6.4W-e 0.2 16 0.30 (3.1) 0.04 to 0.21 15 to 27 0.13 (1.3)NX-50LAT322-6.75W-e 0.2 26 0.34 (3.5) 0.04 to 0.28 18 to 31 0.15 (1.5)NX-50LAT323-61.1W-e 0.2 40 0.51 (5.2) 0.04 to 0.28 27 to 45 0.24 (2.4)NX-50LAT323-61.5W-e 0.2 49 0.58 (5.9) 0.04 to 0.28 31 to 52 0.27 (2.8)NX-65LAT401-61.1W-e 0.4 19 0.29 (3.0) 0.04 to 0.50 15 to 26 0.13 (1.3)NX-65LAT402-61.5W-e 0.4 28 0.40 (4.1) 0.04 to 0.50 21 to 36 0.18 (1.8)NX-65LAT402-62.2W-e 0.4 40 0.58 (5.9) 0.04 to 0.50 31 to 51 0.26 (2.7)NX-65LAT402-63.7W-e 0.4 58 0.71 (7.2) 0.04 to 0.50 38 to 62 0.33 (3.4)NX-65LAT403-63.7W-e 0.4 64 0.84 (8.6) 0.04 to 0.50 46 to 74 0.40 (4.1)NX-65LAT403-65.5W-e 0.4 79 0.91 (9.3) 0.04 to 0.50 49 to 79 0.43 (4.4)NX-65LAT501-61.5W-e 0.6 14 0.24 (2.4) 0.04 to 0.69 12 to 21 0.10 (1.0)NX-65LAT502-62.2W-e 0.6 26 0.41 (4.2) 0.04 to 0.70 22 to 37 0.19 (1.9)NX-65LAT502-63.7W-e 0.6 46 0.64 (6.5) 0.04 to 0.78 35 to 57 0.30 (3.1)NX-65LAT503-65.5W-e 0.6 67 0.91 (9.3) 0.04 to 0.80 49 to 79 0.43 (4.4)NX-65LAT503-67.5W-e 0.6 77 0.93 (9.5) 0.04 to 0.80 51 to 81 0.44 (4.5)NX-80LAT652-63.7W-e 0.9 23 0.37 (3.8) 0.04 to 1.03 19 to 33 0.17 (1.7)NX-80LAT652-65.5W-e 0.9 41 0.59 (6.0) 0.04 to 1.08 32 to 52 0.27 (2.8)NX-80LAT653-67.5W-e 0.9 58 0.83 (8.5) 0.04 to 1.10 45 to 72 0.39 (4.0)

2-12

2.4.2 Special Model (Lift Model)

(1) NX-LAT type water supply unit

Auto-alternate operation (Lift model)

Frequ-ency Model



Water supply m3/min

Total headm


Water supply m3/min

Preset starting value selected

range m

50Hz

NX-LAT252-5.4SD-e 0.06 19 0.27 (2.8) 0.02 to 0.08 11 to 21 0.09 (0.9)NX-LAT322-5.75S2D-e 0.1 25 0.35 (3.6) 0.02 to 0.14 16 to 28 0.13 (1.3)NX-LAT252-5.4D-e 0.06 19 0.27 (2.8) 0.02 to 0.08 11 to 21 0.09 (0.9)NX-LAT322-5.75D-e 0.1 25 0.35 (3.6) 0.02 to 0.14 16 to 28 0.13 (1.3)NX-LAT323-51.1D-e 0.1 38 0.52 (5.3) 0.02 to 0.14 25 to 42 0.22 (2.2)NX-LAT324-51.1D-e 0.1 40 0.57 (5.8) 0.02 to 0.12 28 to 46 0.24 (2.4)NX-LAT401-51.1D-e 0.2 19 0.28 (2.9) 0.02 to 0.25 12 to 22 0.10 (1.0)NX-LAT402-51.5D-e 0.2 25 0.37 (3.8) 0.02 to 0.25 16 to 29 0.14 (1.4)NX-LAT402-52.2D-e 0.2 39 0.52 (5.3) 0.02 to 0.25 25 to 42 0.22 (2.2)NX-LAT403-53.7D-e 0.2 60 0.75 (7.6) 0.02 to 0.25 38 to 62 0.33 (3.4)NX-LAT404-55.5D-e 0.2 75 0.92 (9.4) 0.02 to 0.25 48 to 76 0.41 (4.2)NX-LAT502-51.5D-e 0.3 16 0.3 (3.1) 0.02 to 0.35 13 to 24 0.11 (1.1)NX-LAT502-52.2D-e 0.3 25 0.45 (4.6) 0.02 to 0.35 21 to 36 0.18 (1.8)NX-LAT503-53.7D-e 0.3 47 0.71 (7.2) 0.02 to 0.37 36 to 58 0.30 (3.1)NX-LAT503-55.5D-e 0.3 59 0.78 (8.0) 0.02 to 0.40 39 to 64 0.34 (3.5)NX-LAT504-57.5D-e 0.3 75 0.95 (9.7) 0.02 to 0.40 49 to 78 0.43 (4.4)NX-LAT652-53.7D-e 0.45 26 0.39 (4.0) 0.02 to 0.57 18 to 31 0.15 (1.5)NX-LAT652-55.5D-e 0.45 38 0.53 (5.4) 0.02 to 0.62 26 to 43 0.22 (2.2)NX-LAT653-57.5D-e 0.45 56 0.75 (7.6) 0.02 to 0.64 38 to 62 0.33 (3.4)

60Hz

NX-LAT252-6.4SD-e 0.06 21 0.30 (3.1) 0.02 to 0.08 13 to 23 0.10 (1.0)NX-LAT322-6.75S2D-e 0.1 24 0.34 (3.5) 0.02 to 0.14 15 to 26 0.12 (1.2)NX-LAT252-6.4D-e 0.06 21 0.30 (3.1) 0.02 to 0.08 13 to 23 0.10 (1.0)NX-LAT322-6.75D-e 0.1 24 0.34 (3.5) 0.02 to 0.14 15 to 26 0.12 (1.2)NX-LAT323-61.1D-e 0.1 38 0.5 (5.1) 0.02 to 0.14 24 to 41 0.21 (2.1)NX-LAT323-61.5D-e 0.1 46 0.58 (5.9) 0.02 to 0.14 28 to 47 0.25 (2.5)NX-LAT401-61.1D-e 0.2 19 0.29 (3.0) 0.02 to 0.25 12 to 22 0.10 (1.0)NX-LAT402-61.5D-e 0.2 27 0.40 (4.1) 0.02 to 0.25 18 to 31 0.15 (1.5)NX-LAT402-62.2D-e 0.2 40 0.57 (5.8) 0.02 to 0.25 28 to 47 0.25 (2.5)NX-LAT402-63.7D-e 0.2 58 0.7 (7.1) 0.02 to 0.25 35 to 58 0.30 (3.1)NX-LAT403-63.7D-e 0.2 64 0.84 (8.6) 0.02 to 0.25 43 to 69 0.37 (3.8)NX-LAT403-65.5D-e 0.2 75 0.91 (9.3) 0.02 to 0.25 47 to 75 0.40 (4.1)NX-LAT501-61.5D-e 0.3 15 0.24 (2.4) 0.02 to 0.40 10 to 18 0.08 (0.8)NX-LAT502-62.2D-e 0.3 26 0.41 (4.2) 0.02 to 0.39 19 to 32 0.16 (1.6)NX-LAT502-63.7D-e 0.3 46 0.64 (6.5) 0.02 to 0.40 32 to 52 0.27 (2.8)NX-LAT503-65.5D-e 0.3 65 0.9 (9.2) 0.02 to 0.40 47 to 75 0.40 (4.1)NX-LAT503-67.5D-e 0.3 76 0.93 (9.5) 0.02 to 0.40 48 to 77 0.42 (4.3)NX-LAT652-63.7D-e 0.45 23 0.37 (3.8) 0.02 to 0.56 16 to 29 0.14 (1.4)NX-LAT652-65.5D-e 0.45 41 0.59 (6.0) 0.02 to 0.57 29 to 48 0.25 (2.5)NX-LAT653-67.5D-e 0.45 58 0.83 (8.5) 0.02 to 0.56 42 to 68 0.36 (3.7)

Auto-alternate parallel operation (Lift model)Frequ-ency Model

Standard Specifications Specified range Charged pressure in the pressure tank

MPa (kgf/cm2)Water supply m3/min

Total headm


Water supply m3/min

Preset starting value selected

range m

50Hz

NX-40LAT252-5.4SW-e 0.12 19 0.27 (2.8) 0.04 to 0.16 11 to 21 0.09 (0.9)NX-50LAT322-5.75S2W-e 0.2 24 0.35 (3.6) 0.04 to 0.28 16 to 28 0.13 (1.3)NX-40LAT252-5.4W-e 0.12 19 0.27 (2.8) 0.04 to 0.16 11 to 21 0.09 (0.9)NX-50LAT322-5.75W-e 0.2 24 0.35 (3.6) 0.04 to 0.28 16 to 28 0.13 (1.3)NX-50LAT323-51.1W-e 0.2 37 0.52 (5.3) 0.04 to 0.28 25 to 42 0.22 (2.2)NX-50LAT324-51.1W-e 0.2 39 0.57 (5.8) 0.04 to 0.25 28 to 46 0.24 (2.4)NX-65LAT401-51.1W-e 0.4 18 0.28 (2.9) 0.04 to 0.50 12 to 22 0.10 (1.0)NX-65LAT402-51.5W-e 0.4 25 0.37 (3.8) 0.04 to 0.50 16 to 29 0.14 (1.4)NX-65LAT402-52.2W-e 0.4 39 0.52 (5.3) 0.04 to 0.50 25 to 42 0.22 (2.2)NX-65LAT403-53.7W-e 0.4 60 0.75 (7.6) 0.04 to 0.50 38 to 62 0.33 (3.4)NX-65LAT404-55.5W-e 0.4 74 0.92 (9.4) 0.04 to 0.50 48 to 76 0.41 (4.2)NX-65LAT502-51.5W-e 0.6 15 0.3 (3.1) 0.04 to 0.70 13 to 24 0.11 (1.1)NX-65LAT502-52.2W-e 0.6 25 0.45 (4.6) 0.04 to 0.69 21 to 36 0.18 (1.8)NX-65LAT503-53.7W-e 0.6 46 0.71 (7.2) 0.04 to 0.74 36 to 58 0.30 (3.1)NX-65LAT503-55.5W-e 0.6 58 0.78 (8.0) 0.04 to 0.80 39 to 64 0.34 (3.5)NX-65LAT504-57.5W-e 0.6 75 0.95 (9.7) 0.04 to 0.80 49 to 78 0.43 (4.4)NX-80LAT652-53.7W-e 0.9 25 0.39 (4.0) 0.04 to 1.11 18 to 31 0.15 (1.5)NX-80LAT652-55.5W-e 0.9 38 0.53 (5.4) 0.04 to 1.21 26 to 43 0.22 (2.2)NX-80LAT653-57.5W-e 0.9 55 0.75 (7.6) 0.04 to 1.24 38 to 62 0.33 (3.4)

60Hz

NX-40LAT252-6.4SW-e 0.12 21 0.30 (3.1) 0.04 to 0.16 13 to 23 0.10 (1.0)NX-50LAT322-6.75S2W-e 0.2 24 0.34 (3.5) 0.04 to 0.28 15 to 26 0.12 (1.2)NX-40LAT252-6.4W-e 0.12 21 0.30 (3.1) 0.04 to 0.16 13 to 23 0.10 (1.0)NX-50LAT322-6.75W-e 0.2 24 0.34 (3.5) 0.04 to 0.28 15 to 26 0.12 (1.2)NX-50LAT323-61.1W-e 0.2 38 0.5 (5.1 0.04 to 0.28 24 to 41 0.21 (2.1)NX-50LAT323-61.5W-e 0.2 46 0.58 (5.9) 0.04 to 0.28 28 to 47 0.25 (2.5)NX-65LAT401-61.1W-e 0.4 18 0.29 (3.0) 0.04 to 0.50 12 to 22 0.10 (1.0)NX-65LAT402-61.5W-e 0.4 25 0.40 (4.1) 0.04 to 0.50 18 to 31 0.15 (1.5)NX-65LAT402-62.2W-e 0.4 39 0.57 (5.8) 0.04 to 0.50 28 to 47 0.25 (2.5)NX-65LAT402-63.7W-e 0.4 57 0.7 (7.1) 0.04 to 0.50 35 to 58 0.30 (3.1)NX-65LAT403-63.7W-e 0.4 63 0.84 (8.6) 0.04 to 0.50 43 to 69 0.37 (3.8)NX-65LAT403-65.5W-e 0.4 75 0.91 (9.3) 0.04 to 0.50 47 to 75 0.40 (4.1)NX-65LAT501-61.5W-e 0.6 14 0.24 (2.4) 0.04 to 0.75 10 to 18 0.08 (0.8)NX-65LAT502-62.2W-e 0.6 25 0.41 (4.2) 0.04 to 0.74 19 to 32 0.16 (1.6)NX-65LAT502-63.7W-e 0.6 45 0.64 (6.5) 0.04 to 0.80 32 to 52 0.27 (2.8)NX-65LAT503-65.5W-e 0.6 65 0.9 (9.2) 0.04 to 0.80 47 to 75 0.40 (4.1)NX-65LAT503-67.5W-e 0.6 75 0.93 (9.5) 0.04 to 0.80 48 to 77 0.42 (4.3)NX-80LAT652-63.7W-e 0.9 23 0.37 (3.8) 0.04 to 1.08 16 to 29 0.14 (1.4)NX-80LAT652-65.5W-e 0.9 40 0.59 (6.0) 0.04 to 1.12 29 to 48 0.25 (2.5)NX-80LAT653-67.5W-e 0.9 57 0.83 (8.5) 0.04 to 1.12 42 to 68 0.36 (3.7)

3-1

×

3. Installation

3.1 Before Using the Water SupplyUnit

When the water supply unit isD-livered, make sure immediately after unpacking that:(1) The description on the nameplate is in accordance with the order.

(2) No fastening parts such as bolts or nuts are loosened.(3) No part is damaged during transportation.(4) All accessories ordered are included.

Fig. 3-1 Description on the nameplate

CautionWhen unpacking, check that the unit is not upside down, and be careful of the nails toopen the crate.Otherwise it may causeinjury.

Note Ask some specialized company to dispose of packing material thatbecomes unnecessary after unpacking.

-e

-e

3-2

*1) Eyebolt mountpositionPump side

*2

Eyebolts Motor sideM10

NutM10

Weld nut

3.2Hints on Installation

(1) Install the unit in a place that satisfies the following conditions:· A place that satisfies the requirements in “2.2 Water Supply UnitSpecifications”.· A place not subject to wind or rain.· A place sufficiently ventilated and not subject to too much dust or humidity.· A place protected from access or operation by unauthorized personnel.· A place which is as close to the source of water supply as possible and where the length of suction

piping can be made as short as possible.(2) Fix firmly on a level concrete foundation with foundation bolts.(3) Be sure to provide drainage ditch around the water supply unit and waterproof the floor.(4) If there is any possibility of freezing in winter, provide freeze-proofing measures for the pump room or

pump, valves, piping, pressure transmitters, pressure tanks, etc. Contact the manufacturer for freeze-proof models in line.

(5) Use materials with superior sound insulating properties for doors and walls of the pump room. If there is any possibility of noise causing a problem, provide soundproofingmeasures.

(6) When lifting the water supply unit, attach 4 eyebolts as shown in the following figure for lifting. Eyebolts are special accessories. Make them available separately. (Motor output: 3.7kW or less)For a 5.5/7.5kW output motor, lifting holes exist in its common base. Provide pads so that no scratch is made on the unit.

*2) Eyebolt mountposition

*1

Note) The figure shows an example of auto-alternate/auto-alternate parallel operation.For independent operation, no weld nut exists.

Fig. 3-2 For motor output of 3.7kW or less

Warning

Never lift the unit with any load applied to the pressure tank, piping or control panelwhen moving/installing the unit. Otherwise the unit may fall down and causeinjury or damage.Check the weight of the devices with the catalog or dimensions drawing before lifting. Do not lift devices weighing more than the rated load of the hanging equipment. Otherwise the unit may fall down and cause injury ordamage.Do not move, by manpower, devices that weigh a load per person of 30Kg or more. Never do the work in an unnatural position. Be careful, or otherwise it may cause to injury.

CautionFor an installation environment, observe the hints in this manual that follow.Otherwise it may lead to malfunction or failure.And it may result in shortening of the equipment lifetime.

CautionThis water supply unit is for indooruse.When using outdoors, provide the optional cover for outdooruse. Otherwise it may lead to failure.

CautionWhen lift operation cannot be avoided, use a lift operation model of the water supplyunit.Otherwise water supply may be stopped because of reduced discharge pressure.

3-3

3.3 Hints on Piping

(1) Mount the companion flange on the water supply unit after screwing the pipe in.(2) Be sure to provide sufficient supports so that the weight of the piping will not be applied to the

main unit.(3) Be sure to provide gate valves and test pipe for the discharge pipe for adjustment in trial.(4) Be sure to provide a suction pipe for each pump.(5) Make the suction pipe as short as possible and include as few bends as possible.(6) Use a pipe of the same caliber with or the next larger than that of the pump to minimize pipingloss.(7) Be sure to provide a gate valve for the suction pipe .

(Do not provide gate valves for lift models.)(8) Provide a strainer at the end of the suction pipe to prevent foreign objects from entering the

pipe.(9) Clean inside of the receiver tank after installation to prevent foreign objects from entering the

pump.

Caution Donot screw the pipe in with companion flanges attached to the pump.Otherwise it may cause damage to the pump.

CautionDo not merge suction pipes.In addition, avoid "ladder" piping that runs up and down. Otherwise the unit may fail to operate properly.

Caution Donot use piping material that will rust because it may cause damage to the unit.

Caution Flush the inside of receiver tanks and piping sufficiently after installation.

<Piping installation example>

Maintenancespace

600mm or more

5 Drainageditch

4 1

Receivertank

98 6 7

3Vibrationisolation 2 1fitting 7

Vibrationisolationframe base (Special attachment)

Drainage ditch

6 2 Note) Maintenance space indicates manufacturer’srecommendation.

Fig. 3-3 Piping installation example

Mai

nten

ance

sp

ace

900m

mor

mor

e (C

ontro

lpan

el

face

side

)

Mai

nten

ance

sp

ace

600m

mor

mor

e

Mai

nten

ance

sp

ace

600m

mor

mor

e

3-4

3.4 Hints on Wiring

3.4.1 Electrical Wiring

(1) Be sure to provide an earth leakage breakerD-dicated to this unit for the primary power source of the water supply unit. The standard control panel has motor overload protectionD-vices but does not have short circuit protection devices. If earth leakage breakers are incorporated in the control panel, check their capacity and choose an earth leakage breaker on the power side by considering protection coordination.

(2) Be sure to provide a grounding wire to prevent electric shock.Connect the grounding wire to the grounding terminal in the control panel.

(3) Connect the primary power source to the power terminal block in the controlpanel.Put the wires in metal tubes or metal conduits and provide shielding. Ground the covering of thetubes.

(4) Maintain voltage fluctuation within 10 % and the frequency within 5 % of the rating. Care should be taken; use out of these ranges may lead to failure.Note that when the power voltage is lower than the rated voltage, overload may occur even if the flow rate stays within the specified range.

(5) Double-check the following before starting the pump:· Appropriate earth leakage breakers are provided.· Wiring is correct.· Grounding is securely performed.· None of the three motor terminals (two for single phase) is loosened or slipped off.

Note that if the motor termial are no connected securely, the motor may be burned.

WarningBe sure to provide an earth leakage breaker dedicated to this unit at the source ofthe power.Otherwise it may lead to electric shock or fire.

Warning Connect the grounding wire securely to the control panel and be sure to performgrounding.

WarningConnecting a grounding wire to a gas pipe or a water pipe is prohibited by law andextremely dangerous.

Caution Do not put other cables or control lines in the same tubes orconduits.

Warning

Perform wiring safely and securely with wiring devices of good quality in accordancewith the ministerial ordinance on the technical standard for electrical equipment andInterior Wiring Code.Electrical wiring should be carried out by qualified electriciansonly. Wiring by unqualified persons is prohibited by law.

3-5

Wire through both sides of theinstrumentation wire entry. 6-Instrumentation wire entry

Tie at two points on eachside.

3.4.2 InstrumentationFor the BQNXF type control panel, do the instrumentation wiring as follows. For the NSX type control panel, which does not have water level control or external output function, wiring is notnecessary.

All instrumentation wires should be connected to the terminal block on the controlboard. Connect wires to the control board in accordance with the following notes.

Use flexible electric wires for instrumentation wiring.Insert an instrumentation wire from the instrumentation wire entry, and pass it through both sides of the lid to connect to the board.The Instrumentation wiring entry is structured as a conduit knockout.

Tie instrumentation wires to the steel plate of the main unit and the liD-ach on both sides - at 4 points in total. Resin wire-tying straps are provided with the unit.

(1) Wiring for Level Control

Wire the receiver tank electrode bars in accordance with the tables of the followingpage.· Ball tap Table 3-4-2(a)· Inflow solenoid valve Table 3-4-2(b)

· When shipped, "No tank" is selected. When the unit is used with tank electrodes connected, select a tank to use from the operation panel before starting the operating of the pump. ( see 6.2)· When inflow solenoid valves are used, check the type of solenoid valve

Note (normally-open or normal-closed) and set the solenoid type (parameter: P103).( see 6.5)

Select "Auto" for the solenoid valve operation from the operation panel when using.( see 6.3)

Fig. 3-4-2 (a) Instrumentation wiring method

CautionWhen working on conduit knockouts and guiding wires, equip protectors such asgloves to avoid injury caused by cut edges of steel plates.Attach a grommet ( 22) to the wire entry for protecting wires or use conduit tubes.

3-6

Wiring

Tank full

ResumptionRacing prevention (Tanklow)

Wiring

Tank full

ResumptionRacing prevention (Tank low)

Wiring

Tank full

ResumptionRacing prevention (Tank low)

Electrode barsfor receiver tank

Wiring

Tank full

ResumptionTank lowRacing prevention

Electrode bars for receiver tank #1

Wiring

Tank full



Wiring

Tank full


1E0

1E1

1E2

1E3

1E4

1E0

1E1

1E2

1E3

Tap

wat

er

1E0

1E1

1E2

1E3

1E4

1E0

1E1

1E2

1E3

2E0

2E1

2E2

2E3

2E4

2E0

2E1

2E2

2E3

Tap

wat

er

Table 3-4-2(a) Wiring (ball tap)Single receiver tank Double receiver tank

Control panel Control panel

Level regulating

valveBall tap

Level regulating

valveBalltap

Ball tap

Level regulating

valve

Receiver tank Receiver tank #1 Receiver tank #2

P1 P2

Water supplyunitP1 P2

Water supplyunit

Tank No.1Solenoid valve Manual closeParameter: P101 4

Tank Common Solenoid valve Manual closeParameter: P101 4

Tank No.1Solenoid valve Manual closeParameter: P101 5

Tank Common Solenoid valve Manual closeParameter: P101 5

Terminal block forreceiver tank #2





Electrode bars for receiver

Terminal block for receiver tank #2



5el

ectro

deba

rs4

elec

trode

bars

Wiri

ngSe

tting

Wiri

ngSe

tting

Tap

wat

er

3-7

Wiring

Tank fullInflow sol. close Inflow sol. openResumptionRacingprevention (Tank low)

SVInflow

solenoid valNormally-

open*

Wiring

Tank fullInflow sol. close Inflow sol. open ResumptionRacingprevention (Tank low)

SVInflow

solenoid vNormall

open*

Tap

wat

er

SV

C

SV

1S

VC

SV

1

SV

C

SV

2S

VC

SV

2

Table 3-4-2(b) Wiring (inflow solenoid valve)Single receiver tank Double receiver tank

Control panel

Level regulating

valve

Level regulating

valve

Level regulating

valve

Receiver tank Receiver tank #1 Receiver tank #2

P1 P2

Water supply unitP1 P2

Water supplyunit

Tank No.1Solenoid valve Auto Parameter: P101 4

Tank Common Solenoid valve Auto Parameter: P101 4

Wiring

Tank full Inflow sol. closInflow sol. openResumption

Racing prevention (Tank low)

SVInflow

solenoid valve

Normally-open*

ve alvey-

Tank No.1Solenoid valve Auto Parameter: P101 5

Tank Common Solenoid valve Auto Parameter: P101 5

Wiring Wiring Wiring

Tank fullInflow sol. close Inflow sol. openResumption

SVInflow


SVInflow


SVInflow

Tank low solenoid valveNormally- Tank low solenoid valveTanklow

Normally-solenoid valve

Normally-Racingprevention open* Racingprevention open* Racingprevention open*

Electrode bars for receiver tank



* Normally-close inflow solenoid valves can also be used by setting the parameter:P103.

Caution Provide the dedicated grounding electrode for the inflow solenoid valve.



Electrode bars for receiver tank



Control panel





5el

ectro

deba

rs4

elec

trode

bars

Wiri

ngSe

tting

Wiri

ngSe

tting

1E0

1E1

1E2

1E3

1E4

1E0

1E1

1E2

1E3

1N1

1N2

1N1

1N2

SV

C

SV

1S

VC

SV

1

Tap

wat

er

1E0

1E1

1E2

1E3

1E4

1E0

1E1

1E2

1E3

1N1

1N2

1N1

1N2

2E0

2E1

2E2

2E3

2E4

2E0

2E1

2E2

2E3

2N1

2N2

2N1

2N2

Tap

wat

er

3-8

(2) External Output Signals

Wire the external output terminals in accordance with the wiring diagrambelow.

NoteThe external relay output pattern can be selected out of five options in theparameter: P100 setting.For details/setting, see 6.5 Parameter Setting.

External output terminals(Control board I/O terminal block)

Fig. 3-4-2(b) For standard model(Parameter: P101 setting: 0)

M1 M2 MC B1 B2 B3 B4 B5 BC#1

oper

atio

n

#2op

erat

ion

#1fa

ilure

#2fa

ilure

Rec

eive

rtan

kfu

ll

Rec

eive

rtan

klow

R

acin

gpre

vent

ion

Trou

ble

Pow

ersu

pply

Pow

ersu

pply

4-1

4. Preparations for Operation

4.1 Check before Trial

4.1.1 Electric System

(1) Make sure that all connections are correct.(2) Check the fastening parts for possible loosening of terminals.(3) Make sure that secure grounding is made.(4) The setting of the thermal relay is adjusted when shipped to the rated current of the pump to be

used. Double-check the setting.The rated current is indicated on the nameplate of the pump.

4.1.2 Pump(1) Make sure that the water level of the receiver tank is between Resumption and Tank full.(2) Fully open the gate valve of the suction and completely close the gate valve of the dischargepipe.(3) Make sure that the TJ valve is open.

The water supply unit does not work properly if the TJ valve is closed.(4) Manually turn the pump and make sure that it turns smoothly.

Turn the pump by inserting a screwdriver in the groove at the end of the shaft through the hole in the fan cover and turning it. If the pump rotates smoothly, and undue resistance is not felt while it is rotating, there is no problem.

(5) Loosen the air bleed plug to bleed the pump. Manually turn the pump (mentioned above) at the same time to completely discharge air in the vane.Priming is completed when the water overflows and air does not come out.

Caution Never operate the pump without priming it.It may lead to burning of the sliding part in the pump.

Warning Before checking by manually turning the pump, be sure to shut off the source powerof the water supply unit.

Warning Before changing the wiring, be sure to shut off the power of the panel board andmake sure that the pilot lamp is turned OFF. Otherwise it may cause electric shock.

4-2

4.2 Turning the Power ON

(A) BQNXF type control panel

(1) Open the lid of the control panel.(2) Turn the source power of the panel board ON.

Then, for the control panel with optional earth leakage breaker, turn the earth leakage breaker ON, too.

(3) Turn ON the operating power switch on the control board.(4) Make sure that the pilot lamp on the control board is illuminated.(5) The display on the panel will indicate information such as the initial setting in the following order.

Program versionSupplying the power to the board displays the version # of the installed control program twice. Program version may be changed without notice.Initial check monitorThe system status is checked when powering On. The indication is displayed andblinks for about 2 seconds if there is no problem. If a fault is recognized, the corresponding alarm is output.Preset starting valueDisplays the preset starting value.Ex.: Preset starting value 25 [m H2O ]

Indication in the normal modeThe pressure in the discharge piping is indicated as the heaD-x.:

Pressure in discharge piping 30 [m H2O]

(6) Close the lid of the control panel.

(B) NSX type control panel

(1) Open the lid of the control panel.(2) Make sure that the operation selector switch is set to “Stop”.(3) Turn the source power of the panel board ON.(4) For operation, set “Manual” or “Auto” for the operation selector switch depending on what you

want to do.(5) Close the lid of the control panel.

DangerAfter powering ON, do not touch parts other than those at the operating pointsindicated below.There is a risk of electric shock.

Warning Do not operate the control panel with wet hands.Otherwise it may cause electric shock or shortcircuits.

Operationpower switch

ON

Controlboard

Protectioncover

OFF

Pilot lamp

Fig. 4-2-1 Operation power switchand pilot lamp

(Motor output: 3.7kW or less)

5-1

Operation selector

Operation selector

5. TrialThe following is explained in the procedure for operation from the BQNXF type control panel. For the

NSX type control panel, switch is not available, while operation is performed by selecting “Manual”

or “Auto” using select switches in the panel.

5.1 Check before Manual Operation

(1) Select Manual with the .

(2) Press the Manual switch of the pump you want to operate, activate the pump, and immediately after that, press the switch once again to stop the pump. Repeat this procedure once or twice to check that there are no problems on the following points.

Installation and piping condition (no water leakage, no abnormal vibration,etc.)Rotating direction of the pumpChecked by viewing the motor fan. A right-handed rotation viewed from the motor side iscorrect.Priming condition (the sound of water inflow heard or not)

(3) Restart the pump, gradually open the check valve of the test pipe while checking if the pump operates properly, and bleed the pump completely.

(4) When the bleeding of the pump is completed, close the check valve of the test pipe.(5) Press the Manual switch of the operating pump to stop the pump.

Warning

Do not operate the unit continuously with the pump shut up (with the gate valve ofthe discharge pipe closed) for a minute or more.If the above operation continues for a long period of time, there is a risk of damageto the pump and steam outbursts caused by the increased temperature of the pumpand increased internal pressure.

#1 Manual

Confirm

#1 Manual

Confirm

Switches to operate

For pump #1 operation

For pump #2 operation

Note Check manual operation for all pumps.

5-2

Operation selector

5.2 Confirming Automatic Operation

Selecting Auto with switch performs automatic operation described below.

Read the following explanation carefully to thoroughly understand the operation in advance and make sure that the unit operates properly with the test pipe. In addition, together with check on the operation, check individual pumps for abnormality with respect to pressure, noise, andvibration.Note that while the preset starting value has already been configured when shipped, it can be changed to suit the conditions on site. If so required, change the settings according to 6.5 ParameterSetting.

5.2.1 Auto-alternate operation (independent operation) typeAuto-alternate operation means a type of operation in which two pumps alternately start automatically when the pressure in the piping is reduced and stop automatically when the amount of water used is reduced.In independent operation, operation is performed with a single pump, not with pumpsalternating.

(1) NX-LAT water supply unit operation exampleWhen the water tap is opened and water isused, pressure in the discharge piping is reduced. If pressure in the discharge piping is reduced to the level of the preset starting value (P1), the pressure transmitter (or pressure switch)D-tects it and the pump is activated.The pumps continue to operate by changingpressures, as water supply changes, in the manner described in the performance curve of the pump.If the amount of water used is reduced tostopping flow rate (Q1) or less, the flow switch detects it and the pump is stopped. The indicator for operation flashes while checking that the pump is being stopped.When the water tap is re-opened and water isused, the pump that has been at a pause starts.

Fig. 5-2-1(b) Auto-alternate operation

Dischargepressure

P

P1 : Preset starting value P2 : Shut-up pressure Q1: Stopping flow rate

approx. 10L/min or lessQ2: Maximum water supply

2

P1

Q1 Q2Water supply

5-3

5.2.2 Auto-Alternate Parallel OperationtypeAuto-alternate parallel operation means a type of operation in which two pumps are installed which perform alternate operation when the amount of water used is equal to or less than the maximum water supply of one pump and start parallel operation (simultaneous operation by the two pumps) when the maximum water supply of one pump is exceeded.

(1) NX-LAT water supply unit operation exampleWhen the water tap is opened and water is

used, pressure in the discharge piping is reduced. If the pressure in the discharge piping is reduced to the preset starting value (P1), the pressure transmitterD-tects it and the pump is activated.The pumps continue to operate by changingpressures, as water supply changes, in the manner described in the performance curve of the pump.As the amount of water used is increased, thepressure in the discharge piping is reduced. When the pressure is reduced to the preset starting vaue (P1) again, the pressuretransmitterD-tects it and the pump that has been at a pause is started.

Also when in parallel operation, the pumps continue to operate by changing pressures, as water supply changes, in the manner described in the performance curve of thepump.If the amount of waterD - creases and the pressure is elevated to the level of parallel offpressure (P3), the pump activated first stops and only the pump that followed continues operation.

Fig. 5-2-2(b) Auto-alternate paralleloperation

Dischargepressure

P2

P3

P1 : Preset starting value P2 : Shut-up pressureP3 : Parallel off pressure Q1 :Stopping flow rate

approx. 10L/min or lessQ : Maximum water supply2

(with one pump)

P1

Q3 : Maximum water supply (with two pumps)

Q1 Q2 Q3Water supply

5-4

If the amount of water used is reduced further to the stopping flow rate (Q1) or less, the flow switch detects it and the pump is stopped. The indicator for operation flashes while checking that the pump is being stopped.When the water tap at the end is opened again and water is used, the pump that has been at a pause is started.

6-1

#2Manual

Back

6. Basic Operation and Display/SettingThis section mainly describes the details of operation, display, and setting for the BQNXF type control panel.The above features are not available in the NSX type control panel, and you only need to perform changeover of the operation selector switch in the panel ( see 2.1) and make settings for pressure switches see 6.6).

6.1 Operating the Pump

6.1.1 Selecting Operation Mode

Select operation mode using switch on the control panel.

Table 6-1 Selecting operation mode

Manual Stop AutoManual operation modeManually operates the pump.For the procedure for manual operation, see 6.1.2 Manual operation.

Manual Stop Auto Stop operation modeThe pump does not operate under any circumstances.

Manual Stop Auto

Auto operation modeAutomatically operates or stops the pump byD-tecting pressure in the discharge pipe or detecting the flow rate used with the pressure transmitter, flow switches, etc.Normally, this mode is selected.

For manual operation mode and auto operation mode, the setting is confirmed one second after the indicator is lighted ON.

6.1.2 Manual Operation

In manual operation mode, the pump can be operated or stopped using

control panel.

or switch on the

When a switch is pressed while the pump is stopped, the pump starts operating.When a switch is pressed while the pump is in operation, the pump stops.

6.1.3 Automatic OperationThe pump starts operating automatically at the instant when auto mode is confirmed. For details of automatic operation, see 5.2 Confirming Automatic Operation.

Note During operation, the indicator for the pump in operation lights or blinks regardlessof whether it is in manual mode or in auto mode, and an operation signal is output.

Operation selector

#1Manual

Confirm

6-2

6.2 Selecting a Receiver Tank

Select a receiver tank to use with switch on the control panel.

For a receiver tank to be selected and circuit to be used, see Table 6-2-2.

Table 6-2(a) Selecting tank

No.1

Common

No.2

No tankSelected when receiver tank control is not used.When No tank is selected, an electrode bar signal is ignored and racing prevention is not performed.All indicators for solenoid valve operation are lighted OFF and no solenoid valve operation can be selected.

No.1

Common

No.2

Tank #1Tank #1 is selected.Select the marked button when the receiver tank is #1.Also select the marked button when cleaning tank #2 while two tanksare commonly used.

No.1

Common

No.2

CommonSelected when using two receiver tanks.If common is selected, install communicating vessels between tanks to make the level of water equal.

No.1

Common

No.2

Tank #2Tank #2 is selected.Normally select the marked button when cleaning tank #1 while two tanks are commonly used.

When shipped, “No tank” is selected.The setting is confirmed one second after the indicator is lighted ON.

Table 6-2(b) Relationship between tank to be selected and circuit to be used

TankWater level electrode circuit

Solenoid valve circuitFor alarm and racing prevention

For solenoid valves

No.1 1E0,1E1,1E2,1E3,1E4 1N1,1N2 SVC-SV1

Common 1E0,1E1,1E2,1E3,1E4 1N1,1N2 SVC-SV1 SVC-SV2

No.2 2E0,2E1,2E2,2E3,2E4 2N1,2N2 SVC-SV2No tank Not used Not used Not used

Tank selector

6-3

6.3 Operating the Inflow Solenoid Valve

You can operate inflow solenoid valves using switch on the control panel.

However, this operation is not possible when “No tank” is selected in the tankselection.

Table 6-3 Selecting solenoid valve

Man. Open

Man. Close Auto Manual Open

The inflow solenoid valve is always open.

Man. Open

Man. Close Auto Manual Close

The inflow solenoid valve is always closed.

Man. Open

Man. Close Auto

AutoAutomatically controls the inflow solenoid valve according to the water level of the tank.

Except for Manual Close, the setting is confirmed one second after the indicator is lightedON.

Tank#1:

Tank#2:

1N1 1N2

2N1 2N2

1E3

2E3

Fig. 6-3 Electrode for automatically controlling solenoidvalves

Caution Provide the dedicated grounding electrode for the inflow solenoidvalve.

Close

Open

Grounding

Note

For an electrode or solenoid valve circuit to be used, seeTable 6-2-2.However, when "No tank" is selected in the tank selector switch, it is not possible tooperate the solenoid valve with all indicators in the solenoid valve operation selector switch being lighted OFF.When tank selection is changed to other than "No tank", "Manual Close" is selected for solenoid valve operation.When the electrode opens or closes, the state of electric current carried to the solenoid valve differs depending on the setting for the solenoid valve type (parameter: P103)

Solenoid valve

operation selector

6-4

6.4 Displays on the DisplaySectionItemsD-scribed in Table 6-4 can be displayed by displayoperation.For display operation, refer to individual sections mentioned in the reference pagerow.

Table 6-4 Display item list

Display item Description Priority Category Reference page

Interlocking in operation

An interlock signal input from outside notifies that the system is suspended.Displayed only when interlocking is in operation.

Basic information 6-5

An alarm appearingNotifies the alarm number of an alarm appearing.Displayed only when an alarm is appearing. When multiple alarms appear simultaneously, their alarm numbers are displayed in sequence for two seconds each.


Freeze-proofing underway

[Displayed only for freeze-proof models] Notifies that freeze-proofing is underway. Displayed only when freeze-proofing is underway.


Pressure in discharge piping Displays the pressure in discharge piping.

Unit of display: head meter [m H2O]Basic

information 6-5

Number of starts time of the unit

Displays the number of starts of the unit on the previous day.The number of starts of the unit is counted from the power-up.When the number is equal to or more than 1,000, the indication scrolls.

- Basic information 6-5

Alarm log Displays up to last five alarms that appeared in the past. - Basic

information 6-6

Cum. run time of the pump

Displays the cumulative operation time of each pump.Unit of display: hoursWhen the time is equal to or more than 1,000 hours, the indication scrolls.

- Pump information 6-6

Cum. number of starts of the pump

Displays the cumulative number of starts of each pump.When the number is equal to or more than 1,000, the indication scrolls.

- Pump information 6-6

When the indication scrolls, the number is displayed with thousands and millions separated with a dot “.”.

6-5

Display changeoperation

DirectionBuzzerstop + 1

Direction

Buzzer 1stop +

6.4.1 Operating the Basic Information DisplayNormally, pressure in the discharge piping appears in the display section.

In special cases such as interlocking in operation, an alarm appearing, and freeze-proofing underway, the normal indication is changed based on priorities mentioned in Table 6-4.

For make other display item appear, perform display change operation.

When no operation takes place for 30 seconds after display change, the indication automatically returns to the normal indication.

NoteDisplays such as interlocking in operation, an alarm appearing, and freeze-proofingunderway appear only when the conditions are satisfied.Until 24 hours passes from the power-up, the number of starts on the previous day is displayed as 0.

When no operationtakes place for 30 seconds, the indication automatically returns to the normal indication.

Interlocking in operationdisplayedAn alarm appearing displayedEx.) E002: Receiver tank low occurring

Freeze-proofing underway displayedPressure in discharge piping displayedEx.) 38m H2O

Number of starts time on the previous day displayedEx.) 107 timesAlarm log display transition point(see 6.4.2)

Fig. 6-4-1(b) Basic information display Changing the display item

Displaysection

#1Operati

#1 Bloc

#1 Manu

Confi

Fig. 6-4-1(a) Display section(Ex. Pressure in discharge

piping/38m H2O)

Manual Stop Auto Operation selector

No 1 No2

6-6

1

11

2

2

#1 Manual

Confirm

Normalindication

#2 Manual

Back

When alarm logs existLog numbers and alarm numbers are alternately displayed

Onetime back(last time) E002: Receiver tank low

Two times backE101: #1 overload

Nooperation

for 10seconds Three times back

E203:#2electrical leak

Displays retained logs (5 logs max.) by changing the display

Display changing operation

Direction 1 Direction 1

Alarm log display modeIf no alarm log exists"no" and "Err" are alternately displayed

Fig.6-4-2 Alarm log display

#1Manual

Confirm

#2Manual

Back

6.4.2 Operating the Alarm Log Display

Press switch at the alarm

log display transition pointto switch to the alarm

log display mode.In the alarm log display mode, it is possible to check logs for a maximum of 5 alarms by

operating or

switch.When in alarm log display mode,

press switch or perform

no operation for 10 seconds to return to the normal indication.

6.4.3 Operating the Pump Information Display

Press or switch while the

basic information is displayed, and pump#1 information is displayed.

In the same manner, press or

switch to display pump #2

information.When the pump information is displayed, perform no operation for 10 seconds, or change the basic information display to return to the normal indication.

Note

Cum. operation time and cum. number of starts are retained while the power is shutoff.Notice that data is written to the memory device only once everytwo hours.For that reason, information prior to power interruption (maximum two-hour information) is deleted.

· Alarm log recording starts immediately when an alarm appears.· Log numbers are given as 1, 2, 3, 4, 5 … in the reverse chronological order.

Note · If the alarm appears in a state when the number of logs is 5, the log number 5 beforethat alarm will be deleted.

· Alarm logs are retained while the power is shutoff.

1

#n pump informationOther pump'sinformation displayed

or nn

#n cum. run time Ex.) 95 hours

nn

Normalindication

Buzzerstop +

or

+

1

Buzzerstop

1

#n cum. number of startsEx.) 101 times

When the value is equal to or more than 1,000, the indication scrolls.

Nooperation

for 10 seconds * Pump number is entered in "n".

Fig. 6-4-3 Pump information display

6-7

6.5 Setting ParametersFunctions of the water supply unit can be configured or adjusted using parameters. Parameter settings are retained while the power is shutoff.

6.5.1 Parameter List

Table 6-5-1 Parameter list

Category Symbol Parameter name Initial setting Range of adjustment

Basic

PL Preset starting value 7 1 to 89 [m H2O]

1Go #1 operation permitted on on: #1 pump operation permitted off: #1 pump operation blocked

2Go #2 operation permitted on on: #2 pump operation permitted off: #2 pump operation blocked

CHEC Inspection Mode off on: In inspection mode off: In normal operation

Extended

P100 External relay output pattern 0 0 to 4: see 6.5.4(1)

P101 Number of water level electrode bars 4 4:

5:4 electrode bars5 electrode bars

P102 5P-electrode bar pattern 0 0:1:

Standard Special

P103 Solenoid valve type 0 0:1:

Normally-open Normally-close

P104 Solenoid valve control method 0 0:1:

Simultaneous control Alternate control

P105 Interlocking signal 0 0:1:

a-contact b-contact

P200 Buzzer stop time 600: Buzzer not used1 to 60:Buzzer stop time (min) 99: Buzzer does not stop

P201 High temperature detection 1 0:1:

No detectionD-

P202 Starting frequency failure alarm detection 1 0:

1:No detectionD-

P203 Water level alarm reset method 0 0:

1:Manual Auto

NoteThe initial setting is the standard setting whenshipped.If some parameters are specified at the time of ordering, they are set as the initial setting.

6-8

1

11

#2Manual

Back

#1Manual

Confirm

#1Manual

Confirm

6.5.2 How to Operate the Parameter SettingParameters are set in “Setting Mode”.

Switch to the setting mode.

Hold down

to “Setting Mode”.

switch for 3 seconds or more while the normal indication is displayed to switch

When the screen switches to the setting mode, the basic parameter selector screen appears and and the preset value are displayed alternately in theindicator.

In the parameter selector screen, the parameter name and its preset value are displayed alternately.

Selecting a parameter toset.

Operate or

displayed.

switch to move the parameter to set, so that the target parameter is

For selecting extended parameters, press

the extended parameter selector screen.

switch while is displayed to switch to

Press switch to return to the basic parameter selector screen from the extended parameter

selector screen.

Changing the setting

Press switch in the parameter selector screen to switch to the setting change screen.

Only the setting value is displayed in the setting changescreen.

Operate or switch to change the setting.

Confirming the setting

After finishing changing the setting, press switch to confirm the changed setting.

When the setting is confirmed, the indication blinks 3 times with three confirmation "beep "sounds.Then, automatically returns to the parameter selectorscreen.

Extended parameters can be changed only when "Stop" is selected for operation.

NoteWhen "Manual" or "Auto" is selected, even if switch is pressed in the

extended parameter selector screen, the screen does not transition to the setting change screen, giving two warning "buzzer " sounds.

#1Manual

Confirm

1

Setting

#1Manual

Confirm

6-9

Extended Parameters

Setting

Setting

#1Manual

Confirm

3seconds

Setting modeParameter selector screen

The item set and value set are alternately displayed.

Basic Parameters

Normal indication

No operation

for 60 seconds

Select a parameter with 1 .

Processing when thechange of setting is not

allowedFor extended parameters, the screen transitions to the setting change screen only when "Stop" is selected for operation.Two warning "buzzer " sounds aremade to signal that the change of setting is not allowed.

#2Manual

Back

The change ofsetting is canceled.

Setting change screenDisplays the preset value only.

Setting confirmationprocessing

#1Manual

Confirm

Change thesetting with 1 1

.

Blinks three times.Confirmation sound

(two "beep " sounds) Written to memory

#2Manual

Back

#1Manual

Confirm

1

Fig. 6-5 Operations in setting mode

#2Manual

Back

Canceling the change ofsetting

Press switch to return to the parameter selector screen by canceling the change of setting.

Canceling the settingmode

In setting mode, press switch to return to the normal mode by canceling the settingmode.

Note that if no operation is performed for 60 seconds when in setting mode, the setting mode is automatically exited and the normal mode returns.

SettingIf switch is pressed without confirmation on the setting change screen

Noteand the setting mode is exited, the change made is canceled.

Setting

6-10

6.5.3 Basic ParametersBasic parameters for using the water supplyunit.

(1) Setting the preset starting value

: Preset starting value setting

FunctionSets the starting pressure in automaticoperation.Sets a preset starting value within the specified range by referencing Standard Models of 2.4 Specifications.

Range of adjustment

1 to 89 [m H2O]

Remarks Unless otherwise specified, the standard setting (See the total head column in Standard Models of 2.4 Specifications) is made whenshipped.

(2) Operation permission setting#1 operation permission setting

#2 operation permission setting

Function Sets permission or blockage for operation of thepump.The pump set to “block” cannot operate in manual or automaticmode.

Range of adjustment

: Operation permitted

: Operation blocked

Initial setting : Operation permitted

Remarks The n# block indicator is lighted ON if operation block isset.*The pump number (1 or 2) is entered in “n”.

(3) Inspection mode setting

: Inspection mode setting

Function A switch that turns the inspection mode ON/OFF.*The inspection mode setting is not retained when the power is shutoff.

Range of adjustment

: In inspection mode

: In normal operation

Initial setting : In normal operationRemarks For inspection mode, see 7.2 Inspection Mode.

Caution Be sure to make the settings properly based on the conditions of use.The water supply unit does not work properly if the settings are improperlymade.

6-11

6.5.4 Extended ParametersParameters for setting/adjusting functions of the water supplyunit.

(1) Setting the external relay outputpattern

: Setting the external relay output pattern

Function Select a signal pattern to be output by relays M1,M2,B1 to B5. For patterns, see Table 6-5-2.

Range of adjustment 0 to 4

Initial setting 0 (If other value is specified at the time of ordering, it is set as the initial setting.)

Remarks For M1 and M2, MC is their common terminal, and for B1 to B5, BC is their common terminal.

Table 6-5-2 External relay output pattern

Terminal P100Setting0 1 2 3 4

M1 #1 operation #1 operation #1 operation #1 operationColl.

Operation*7

M2 #2 operation #2 operation #2 operation #2 operation Inspection*8

B1 #1 failure* Serious failure*3 Overload Overload #1 failure*1

B2 #2 failure*1 Slight failure*4Discharge pressure

abnormal drop

Discharge pressure

abnormal drop#2 failure*1

B3 Receiver ank full

-Electrical

leak*9High

temperatureTank full

B4

Receiver tank low

Racing prevention

- Level failure*6 Level failure*6Tank low Racing

prevention

B5 Trouble*2 Col. Failure*5 Col. Failure*5 Col. Failure*5 Trouble*2

*1 “#n failure” is output when the following alarms appear in #n pump. (n: 1 or 2)Overload, discharge pressure abnormal drop, electric leak, high temperature, and flow switch failure.

*2 “Trouble” is output when the following alarmsappear.Electrode failure, starting frequency failure, pressure transmitter 1 failure, anD-EPROM error.

*3 “Serious failure” is output if no pump exists that can operate in automatic mode while some alarm appears. Note that the above excludes the case of all pumps being set to “operation blocked”.

*4 “Slight failure” is output if a pump exists that can operate in automatic mode while some alarm appears.

*5 The collective failure signal is output when any failure occurs, regardless of the type of the failure.

*6 The level failure signal is output in cases where the receiver tank is full, the receiver tank is low, racing prevention is effective, and an electrode failure alarm appears.

*7 The collective operation signal is output when one of the pumps is operating.*8 The inspection signal is output when inspection is inprogress.*9 Electric leak is output only for models with independent earth leakage breakers.

NoteExtended parameters can be changed only when "Stop" is selected for operation, soconfigure the settings before staring to operate the water supplyunit.

6-12

(2) Setting the number of water level electrodebars

: Setting the number of water level electrode bars

Function Selects the number of level measuring electrodebars.Range of

adjustment4 : 4 electrode bars (4P)5 : 5 electrode bars (5P)

Initial setting4 : 4 electrode bars (4P)(If other value is specified at the time of ordering, it is set as the initial setting.)

Remarks When the setting of 4 electrode bars is selected, values entered for 1E4 and 2E4 are ignored.

(3) 5P-electrode bar patternsetting

: 5P-electrode bar pattern setting

Function

Sets the role of each electrode bar when 5P is selected for levelMeasuring electrode bars.

1E0 1E1 1E2 1E3 1E4 5P electrode bar pattern

2E0 2E1 2E2 2E3 2E4 Setting value: 0 Setting value: 1

Full Full

Resumption Low

Low Resumption

Racing prevention Racing prevention

Grounding Grounding

Range of adjustment

0 : Normal1 : Special

Initial setting 0 : Normal (If other value is specified at the time of ordering, it is set as the initial setting.)

Remarks When the setting of 4 electrode bars is selected, this setting is ignored.

(4) Setting the type of solenoid valve

: Setting the type of solenoid valve

Function Select the type of electrode bar used by being connected to the control panel.

Range of adjustment

0 : Normally-open type 1 : Normally-closed type

Initial setting0 : Normally-open type(If other value is specified at the time of ordering, it is set as the initial setting.)

Remarks -

6-13

(5) Setting solenoid valve controlmethod

: Setting solenoid valve control method

FunctionWhen the selection for tank = “Common” and the selection for solenoid valve operation = “Auto”, selects whether to control the solenoid valves of tank #1 and #2 simultaneously or to control themalternately.

Range of adjustment

0 : Simultaneous control 1 : Alternate control

Initial setting0 : Simultaneous control(If other value is specified at the time of ordering, it is set as the initial setting.)

RemarksWhen the selection for solenoid valve operation = “Manual Close” or “Manual Open”, controls both solenoid valves simultaneously regardless of the setting.

(6) Interlock signal setting

: Interlock signal setting

Function

Selects the type of signals used for interlocks that forcibly stop the water supply unit.Usable signals are voltageless a-contact and voltageless b-contact. If not connecting interlocks, select “setting 0: voltageless a-contact".

Range of adjustment

0: Voltageless a-contact Interlocking when the contact is closed.1 : Voltageless b-contact Interlocking when the contact is open.

Initial setting0 : Voltageless a-contact(If other value is specified at the time of ordering, it is set as the initial setting.)

Remarks

appears on the display when the system is in suspension after aninterlock signal has been input. If appears although no signal hasbeen input, this setting may have been improperly configured. In that case, check whether or not the type of signal used corresponds to thesetting.

(7) Buzzer stop time setting

: Buzzer stop time setting

Function Sets the time the buzzer automatically stops when an alarm appears. If 0 is set, the buzzer does not sound when an alarmappears.

Range of adjustment

0 : Buzzer sound blocked.1 to 60 : Buzzer stop time (min)99 : Function to automatically stop the buzzer turnedOFF.

Initial setting 60 [minutes](If other value is specified at the time of ordering, it is set as the initial setting.)

RemarksIn addition to automatically stopping the buzzer with this setting, it is

possible to manually stop it using Buzzer stop switch.

6-14

(8) Setting high temperature alarmdetection.

: Setting high temperature alarm detection.

Function Selects whether or not to detect high temperaturealarms.Range of

adjustment0 : No detection 1 : Detection

Initial setting 1: Detection (If other value is specified at the time of ordering, it is set as the initial setting.)

RemarksUse the water supply unit by selectingD-tection for this setting, except when alarm signals need to be kept undetected until a failed high temperature sensor is replaced.

(9) Starting frequency failure alarm detection setting

: Starting frequency failure alarm detectionsetting

Function Selects whether or not to detect starting frequency failurealarms.Range of

adjustment0 : No detection 1 : Detection

Initial setting 1: Detection (If other value is specified at the time of ordering, it is set as the initial setting.)

Remarks -

(10)Water level alarm reset setting

: Water level alarm reset setting

FunctionFor water level alarms (receiver tank full, tank low, and racing prevention), select Manual reset by the reset switch or Automatic reset by the recovery of water level.

Range of adjustment

0 : Manual reset1 : Automatic reset

Initial setting0 : Manual reset(If other value is specified at the time of ordering, it is set as the initial setting.)

RemarksIf Automatic reset is selected, the water level alarm is automatically canceled when the water level is recovered. In such a case, the alarm that appeared can be checked from its alarm log.

6.6 Setting the Preset Starting Value for the PressureSwitch

(1) Turn the adjusting screw while seeing the scale to roughly set the pressure that combines a preset starting value and a pressure difference value.Pressure difference 0.02MPa (0.01MPa 1m H2O)

(2) Manually operate the pump, change the pressure by operating the valve, and make fine adjustment based on the reading of the pressure meter and the chattering ON-OFFsound.

(3) Confirm the starting pressure in automaticoperation.

NoteFor the NSX type control panel, use the pressure switch to set a preset startingvalue. The pressure switch to be used is of fixed pressure difference type, by which the scale is set using the value that combines a preset starting value and a pressure difference value, so that the preset starting value is indirectly set.

Caution Be sure to set a preset starting value within the selected range for the preset startingvalue. Otherwise the unit may not operate properly such as the pump not stopping.

Adjusting screw

Scale

Enlarged view

Fig. 6.6 Pressure switch

7-1

Removethe cap

Discharge waterfrom the

pressure tank

Be careful of splashes!<Be sure to use hoses,

etc for drain piping.>

Air valve

<Procedure for checking charged pressure in the pressure tank>

Stop operation.Turn the valve handle to the position fordischarging water and start drainingwater.Check charged pressure from the air valve.Adjust the charged pressure whenneeded.Put the cap on again.Turn the valve handle back to the normalposition and pour water.Resume automatic operation

7. Maintenance/Checking

7.1 Hints on Maintenance/CheckingPerform the maintenance/inspection of the water supply unit in accordance with 7.3 Maintenance Check List.

Take note of the following during daily inspection:A large deviation of discharge pressure in the pump, current, vibration or noise from the standardvalues shows potential trouble. Inspect the equipment in detail and take corrective measure as soon as possible. Keeping a daily record of operation isrecommended.Make sure that there is no problem with the operation of the equipment in automatic mode.Make sure there is no leak from or damage in thepiping.Make sure there is no leak from the mechanicalseal.

Check for possible loosening of contacts/terminals of the control panel and make sure no water is inside.

Make sure the charged pressure in the completely drained tank is within the specified range.Checking the charged pressure is critical to the life of the pressure tank. Be sure to check periodically (at least once every 6 months).

If the pump is not to be operated for a long time, be sure to perform the following:Keep the pump warm enough or completely drain the pump to prevent freezing inside the pump in

winter.If there is a reserve pump, operate the reserve pump from time to time to maintain its readiness.

Connect to the pressure gaugand fill air through the met fixture for pumping (used for c tires)

Normal handleposition

Handleposition for discharging

water

Fig. 7.1 How to check the pressure tank

CautionMake sure to carry out daily and periodical inspection according to the maintenancecheck list.Otherwise it is likely that failure to prevent trouble will causeaccidents. Furthermore, it may shorten the life of the water supplyunit.

WarningImmediately stop operation when some fault is discovered during inspection, andremove the cause of that fault or contact our office or our service representative. Otherwise it may lead to accidents.

7-2

#1 #2OperationOperation Power

#1 Block #2 Block Failure

to OperatioTnhe1p ower2la mpselectorwhile in inspection mode.

.2 Tank Buzzer

7.2 Inspection ModeFor the BQNXF type control panel, during maintenance and inspection, the control panel can be set to Inspection Mode to notify others that inspection is inprogress.

(1) Transitioning to and canceling inspection mode ( see 6.5)For transitioning to the inspectionmode

Set of the basic parameters “on”.For canceling inspection mode

Set of the basic parameters “off”.* Inspection mode will be canceled automatically 24 hours after its start even if its cancellation is

forgotten.

(2) Inspection mode operationsDisplayThe power lamp flashes while in inspection mode. All other operations are the same as usual.External outputsWhile in inspection mode, output is produced between MC and M2 (voltageless a-contact) only when external relay output pattern (parameter: P100) “4” isselected.External output is not produced for external relayoutput pattern 0 to 3.

Other operations Same as usual.

Fig. 7.2 Identifying inspection in progress

7-3

7.3 Maintenance Check List

Table 7-3(a) Maintenance check list

Item Check… For… By… Criterion

Frequency Consumables replacement guideline

Dai

ly

6M

on

1yr

.

Consumable Qty Replacement

Env

iron

men

t

TemperatureValue (in specified range)

Measuring 0 to 40 C

Humidity Measuring 0 - less than 85%RH Not condensing

Ambience Visual checking No dust or dirt

Pow

er

Power terminal blockVoltage Measuring Specified voltage

appliedVoltage fluctuation Measuring Within allowable range

of fluctuation

Con

trol P

anel

Panel displays/indicators Illumination Visual checking No failure

Setting Setting Visual checking Set as desired

Operation Operation in automatic mode Visual checking No failure

Operating condition

Starting pressure Visual checking Same as the preset value

Stop pressure Visual checking Same as specifiedNumber of starts time of the unit Visual checking 400 times or less

Cum. run time of the pump Visual checking Confirmed

Cum. number of starts of the pump

Visual checking Confirmed

Alarm log Visual checking No alarm appearing Log confirmed

Earth leakage breaker Operation point Visual checking Not trippedPower service terminal blockControl circuit terminal blockPower line

Loosening of screw Tightening Not loosened

Trace of heating Visual checking Not discolored

Dust, damage Visual checking No dust or dirt

Cover and cover mounting

Open/close Manual operation Smooth

Loosening of connection Tightening Not loosened

Structure/appearance Insulator Visual checking Not cracked or deformed

Electromagnetic switch

Loosening of screw Tightening Not loosened

Electromagnetic SW n Once every 3

yearsWear of contact Visual checking Thickness 2/3 or more of that of new contact

Contacting condition Visual checking Contacting face smooth

Printed circuit board Operation Visual checking No failure Printed circuit board 1 Once every 5

years* The pump number is entered in “n”.

WarningFor inspection accompanied by disassembling/servicing, be sure to shut off thesource power of the water supply unit. Otherwise it may lead to electric shock. Or pumps can be suddenly activated by automatic operation and the situation can be very dangerous.

CautionDisassembling should be performed by repair technicians with expert knowledgeonly.Contact the vendor or service counter designated by TERAL INC. forinspection that requires disassem bling of the unit, part replacement, or repairs. Misoperation may cause an accident or failure.

CautionDo not perform an insulation resistance test on the control panel. When testingtheinsulation resistance of the motor, disconnect the wires from the control panel. Otherwise it may cause control panel failure.

CautionReplace gaskets and O -rings for inspection by disassembling. Otherwise it maycause water leakage.

7-4

Table 7-3(b) Maintenance check listIte

m Check… For… By… Criterion

Frequency Consumables replacement guideline

Dai

ly

6M

on

1yr

.

Consumable Qty Replacement

Pum

p/m

otor

Operating condition

Head Visual checking Same as specifiedElectric current value Measuring Same as specified

Sound/vibration

Acoustic checking Sensory checking

No failure

Rotating direction Visual checking Positive rotation

Mechanical seal Leak Visual checking Not leaking Mechanical seal n

Once a year Or 8,000H of continuous operation

Vane Foreign matter wear damage Disassembling No failure

Guide vane Foreign matter wear damage Disassembling No failure

Shaft Rotation Manual turning Smooth

Bearing Heat generation, Sound/vibration

Sensory checking No failure Bearing 1 unit

Once every 3years

Or 15,000H ofcontinuous operation

Winding resistanceResistance between lines (U-V, VW, W-U)

MeasuringUniform

Insulation resistance

Insulation resistance between Grounding and leads

Measuring

1M ormore

Acce

ssor

yot

hers

Pressure tankCharged pressure

Measuring Charged as set Pressure tank 1 Once every 3 years

Painting Visual checking No failure

Pressure transmitter Operation Visual checking Pressure properly indicated

Pressure transmitter 1,2 Once every 5

years

Pressure switch Operation Visual checking Operates according to the preset value Pressure

switch 1 Once every 3 years

Contacts Visual checking Contacting face smooth

Pressure gauge Reading Visual checking No failure Pressure gauge 1 Once every 3

years

Flow switchOperation Visual checking Stops at low flow rates

Flow switchForeign matter, Disassembling No failure Flow switch n Once every 3 Operation Visual checking Parallels off at a flow rate

for parallel off

Flow switch for parallel offHigh temperature

Foreign matter, damage

Disassembling No failure Flow switch n Once every 3 years

Operation Visual checkingFailure detected at high temperatures (50 C or

High temperature n

Once every 3 years

Check valve

Foreign matter, wear, water leakage

Disassembling No failure Check valve n Once every 3 years

Piping Leak Visual checking Not leaking

Damage,

* The pump number is entered in “n”.

NoteThe recommended period for replacement of consumables in the guideline is astandard period when the equipment is properly used and periodically maintained. It can be shorter depending on the condition of use.

Note Ask some specialized company to dispose of waste components that remain afterrepairs or replacement.

8-1

Displaysection

Failureindicator

#1 #2Operation Operation

Power

Reset switch#1 Block #2 Block Failure

Manual Stop Auto Operationselector

#1 #2Manual Manual Reset Buzzer stop switchConfirm Back

No.1 No.2 Tankselector 1 2

Buzzerstop

Common

Open Close AutoMan. Man. Solenoid

valve operationselector

1 2 Setting

Fig. 8-1 Operation panel

8. How to Handle Trouble

The following explanation concerns the BQNXF type controlpanel.For the NSX type control panel, the alarm display/output function is not available.

8.1 Handling Alarms8.1.1 Checking the alarm content

When any failure occurs, the buzzer sounds, the failure indicator starts blinking, and the number for the specific failure appears on the display.Depending on the content of failure, do not output an alarm immediately, but perform backup and retry several times, and if the failure persists, output an alarm.Check alarm details from Table 8.1 Alarm code table, anD-liminate the cause of the trouble.For the cause of the trouble, see 8.2 Causes of Failure and Corrective Actions.When multiple alarms appearsimultaneously, their alarm numbers are displayed in sequence for two seconds each.

Table 8-1 Alarm code tableAlarm code Trouble Alarm

code Trouble Alarmcode Trouble

E001 Receiver tank full E101 #1 overload E201 #2 overload

E002 Receiver tank low E102 #1 discharge pressure abnormal drop E202 #2 discharge pressure

abnormal drop

E003 Receiver tank racing prevention E103 #1 Electric leak*1 E203 #2 Electric leak*

E004 Electrode failure E104 #1 High temperature E204 #2 High temperature

E006 Starting freq. failure E105 #1 (thermal) flow switch failure E205 #2 (thermal) flow switch

failure

E051 Presser transmitter 1 failure - - - -

E080 EEPROM error - - - -

*1 Electric leak alarms are detected only when earth leakage breakers are incorporated independently.

8.1.2 Resetting the AlarmEliminate the cause of the failure and press the Resetswitch.Pressing the Reset switch before eliminating the cause does not work and resetting is not permitted. If multiple alarms appear, only those for which the cause of trouble has been eliminated is reset.

8.1.3 Stopping the BuzzerPress the buzzer stop switch to stop the buzzer while it issounding.By setting the buzzer stop time (P200), it is possible to automatically stop the buzzer after a specified period of time, or possible to block the buzzer.For the setting procedure, See 6.5 ParameterSetting.

Caution

If a non -recoverable trouble alarm appears or in the event of some abnormality,immediately stop operation and contact TERAL INC. or service representative.Otherwise it may lead to accidents.Check and be ready to present the description onthe nameplate, alarm number, and failure condition when contacting.

8-2

8.2 Causes of Failures and Corrective Actions

Table 8-2(a) Causes of failures and correctiveactionsAlarm code Trouble Probable cause Corrective action

E001 Receiver tank full

Water pouring in continuously because “Manual Open” is selected for solenoid valve operation.

Change the solenoid valve operation option to “Auto”.

Water not stopping due to faulty ball tap. Check/replace the ball tap.Water not stopping due to faulty inflow solenoid valve. Check/replace the inflowsolenoid valve.

Water going inside the electrode holder. Check/service the electrode barwiring.Because of the wrong setting for solenoid valve type (P103), the solenoid valve open and water pouring although water is at the level of solenoid valve close.

Set the solenoid valve type to the type of the inflow solenoid valve used.

A tank is selected that is set to “notused” (no electrode bar Select a tank that is set to “used” for tankconnected/cleaning in progress) for tank selection.selection.Water not feeding into the tank because “Manual Close” is selected for solenoid valve operation.

Select “Auto” for solenoid valve operation.

E002 Receiver tank Water not running due to faulty ball tap. Check/replace the ball tap.low Water not running due to faulty inflow

solenoid valve. Check/replace the inflow solenoid valve.E003 Racingprevention Because of the wrong setting for

solenoid valve type (P103), the solenoid valve closed and water not running although water is at the level of solenoid valve open.

Set the solenoid valve type to the type of the inflow solenoid valve used.

Improper/faulty connection of electrode bar wiring. Check/service the electrode barwiring.

Electrode holder contact failure. Check/service the electrodeholder.

E004 Electrode failure

Improper connection of electrode bar wiring. Check/service the electrode barwiring.

Improper/faulty connection of electrode bar wiring. Check/service the electrode barwiring.

E006 Starting frequency failure

The number of starts of the pump increasing due to damage on the diaphragm of the pressure tank that prevents pressure from being retained at the stop of the pump.

Requires checking/replacement of thepressure tank. Contact TERAL INC. orservicer.

Water being used continuously at low flow rates due to leak or the not-tightened tap.

Check/service the piping.Install a pressure tank with larger capacity in parallel.

Low flow rates constantly detected due to flow switch malfunction.

Requires flow switch inspection/replacement. Contact TERAL INC. or service representative.

E051 E052

Pressure transmitter 1 failure Pressure

Faulty pressure transmitter.Requires inspection/replacement of the pressure transmitter. Contact TERAL INC. or service representative.

Frozen piping.

Protect the piping with heat insulating material. Or contact TERAL INC. or service representative for remodeling for freeze proofing.

transmitter 2failure

E080 EEPROM error Faulty memory device on the control board.

Requires inspection/replacement of the control board. Contact TERAL INC. or service representative.

8-3

Table 8-2(b) Causes of failures and correctiveactionsTrouble

no. Trouble Probable cause Corrective action

E101 E201

#1 overload#2 overload

Overload due to use at flow rates other than specified.

Adjust the load so that it can stay within the range of the unit s specifications.

Overload due to damage on the bearing.Requires replacement of the bearing. Contact TERAL INC. or service representative.

Overload due to foreign matter stuck in the pump.

RequiresDisassembling of the pump. Contact TERAL INC. or service representative.

IncreaseD-lectric current due to low power voltage or imbalance between phases.

Check/service the unit for insufficient power capacity or imbalance.

Overcurrent due to motor failure.Requires inspection/replacement of the motor. Contact TERAL INC. or service representative.

Electromagnetic switch contact failure that causes unstable power supply to the motor.

Requires replacement of the electromagnetic switch. Contact TERAL INC. or service representative.

Wrong setting for the thermal relay.Check the rated current specified on the nameplate of the pump and correct the setting.

E102

E202

#1 discharge pressure

abnormal drop#2 discharge pressure

abnormal drop

Lift failure due to insufficient priming or water runnig out.

Perform sufficient pump priming.Check/service the suction piping if water is running out.

Failure to generate the original power of the pump due to entry of air through the suction piping.

Check/service the suction piping.

Pressure not detectable due to the closed TJ valve.

Open the TJ valve to allow water to flow into the pressure transmitter section.

The preset starting value exceeding the limit of the pump capacity.

Check the pump capacity and set the preset starting value to the correct level.

Pump unable to rotate due to pump/motor failure, power line disconnection, etc. Or pump rotating in a reverse direction.

Check the rotating direction. Check/service the wiring.If inspection by disassembling the pump is further required, contact TERAL INC. or service representative.

Unable to lift due to foreign matter stuck in the suction piping/pump that blocked the passage.

Requires disassembling of the pump. Contact TERAL INC. or service representative.

E103

E203

#1 electrical leak#2 electrical leak

Electrical leak somewhere in the secondary electric passage of the earth leakage breaker.

Check for electric leak and make repairs required.

Faulty earth leakage breaker.Requires inspection/replacement of the earth leakage breaker. Contact TERAL INC. or service representative.

8-4

Table 8-2(c) Causes of failures and correctiveactionsTrouble

no. Trouble Probable cause Corrective action

High temperature, unable to stop the Requires flow switchpump while water was not used due to inspection/replacement. Contact TERALflow switch malfunction. INC. or service representative.High temperature due to agitation heat accumulated in the pump in a state of continued lower water usage such as water leakage.

Check/service the piping.Install a pressure tank with larger capacity in parallel.

E104 #1 High High temperature due to damage on the diaphragm of the pressure tank that prevented pressure from being retained at the stop of the pump and caused the pump to operate without water.

Requires checking/replacement of the pressure tank. Contact TERAL INC. or servicer.

temperatureE204 #2 High

temperature

Water having flowed in that had a temperature exceeding the range specified.

Check and improve the condition of use.

Faulty high temperature sensorRequires inspection/replacement of the high temperature sensor. Contact TERAL INC. or service representative.

E105 #1 (thermal) Fault or wire break in the flow switch Requires flow switchflow switch Or foreign matter stuck that prevents inspection/replacement. Contact TERALfailure correct operation. INC. or service representative.

E205 #2 (thermal) Improper connection of flow switch or motor. Requires check/servicing.flow switch

failure

9-1

9. Special Models

9.1 Lift ModelThis sectionD-scribes the lift mode.Lift models allow lifting operation of up to 4 m for actual head and 6 m for total head.For the lift model, a constant relief kit (orifice + ball valve + nipple + union) comes with the water supply unit as standard. Connect a constant bypass pipe to this kit to bring water back to the source of water supply.

<Instructions different from those for the standard models>(1) Provide a bypass pipe for each pump.(2) Place the end of the constant bypass

pipe at the same level as the end of the suction pipe below water, and keep a distance of 300mm or more from the suction pipe, so that air does not enter the suction pipe.

(3) When in operation, fully open the valve. (Water flows at a flow rate of approx.

10 L/min.)(4) Be sure to provide a suction pipe for

each pump. Provide a slope (1/100 or more) to rise toward the pump to prevent air pockets.

(5) Mount the joint carefully to prevent air from entering.

(6) Be sure to mount a foot valve with a strainer at the end of the suction pipe to prevent foreign matters fromentering. Place the inlet port to be at least twice the pipe diameter (D) below the water surface and at least 1 to 1.5 times the pipe diameter (D) above the bottom of the tank.

(7) Do not provide gate valves in the suction pipe .(8) Provide sufficient supports (piping supports) so that the weight of the piping will not be directly

applied to the unit body.

NoteFor the procedure for installing a constant bypass pipe, some guideline or guidancemay exist depending on the local government, etc. Check carefully and follow the relevant instructions.

NoteNote that standard models can be changed to lift models(except for single operation). For details, contact TERAL INC.

3 1 2

1100

5

Lowestlevel

D

1 to 1.5D or more

300mm or more

4

Fig. 9-1(b) Piping installation example

1 Union 2 Orifice

Nipple

Suctionflange

Fig 9-1(a) Constant relief kit1

to1.

5Dor

m

ore

2Dor

mor

e

9-2

9.2 Freeze -Proof Model (For BQNXF Type Control Panel)This section describes the freeze-proof model used if there is a risk of freezing in winter. For freeze-proof models, a freeze-proof kit comes with the water supply unit as standard.

(1) Freeze-proof kitLow temperature sensor*1

Cementheater *1 16W/100V or 200-220VMetal fixtureFixingplate

Cross-recessed head machine screwHeat insulating material *2

Beltheater *1 25W/100V or 200-220V*1 The low temperature sensor and cement heater

should be connected to the control board. ( see 2.1.4)

*2 The heat insulating material is placed between the fixing plate and the cement heater

(2) OperationWhen the low temperature sensor detects water temperature of 3 C while the pump is stoppedA) The heater is activated and generates heat until the water temperature is elevated to 10 C.B) Pump #1 is started and shut-off operation is performed for 10 minutes and then pump #2 is

started and shut-off operation is performed for 10 minutes. For the independent operation model (BQNXF type control panel model), the above applies to pump #1only.

C) If the water temperature is not returned to 10 C within 30 minutes after the end of each pump’s shut-off operation, try the above operationagain.

appears in the display on the control panel while freeze-proofing is in

Note progress.

Even in freeze-proof operation, use of water switches the mode to normaloperation.

Low temperature ON

signal OFF

The low temperature signal isturned "ON" at a temperature ofapprox. 3 C or less, and turned"OFF" at a temperature ofapprox. 10 C or more.

10 minutes 10 minutes

#1 Pump ON

OFF10 minutes 10 minutes

#2 Pump ON

OFF50 minutes 50 minutes

Heater ON

powered ONOFFOperation starts

1 cycle

Operation finishes

Note) The figure shows an example of auto-alternate/auto-alternate paralleloperation of the NX-LAT type.

Fig. 9-2(b) Freeze-proofkit

NoteFor BQNXF type control panel, standard models can be changed to freeze-proofmodels. For details, contact TERAL INC.Note that the NSX type control panel does not conform to freeze-proof specifications.

Note) The figure shows anexample of auto-alternat e/auto-alternate paralleloperation model

Fig. 9-2(a) Freeze-proof kit

Head Office 230, Moriwake, Miyuki-cho, Fukuyama-city, Hiroshima, 720-0003, Japan

Tel.+81-84-955-1111 Fax.+81-84-955-5777

www.teral.net2017 04

E-IMN-00405-010-A

Documents

Constant Pressure Water SupplyUnit · (4) Failure or damage caused by repair or remodeling performed without the consent of TERAL INC. (5) Failure or damage occurring when parts other