Internal Gear Pump / Drive QT, QX, QXV, QXM series ... uso e manutenzione QT... · Internal Gear Pump / Drive QT, QX, QXV, QXM series Operating manual Bucher Hydraulics GmbH Industriestrasse

Internal Gear Pump / DriveQT, QX, QXV, QXM series

Operating manual

Bucher Hydraulics GmbHIndustriestrasse 1D-79771 Klettgau

410.10.00.00 / VPZ / 07.2005 Operating manuel 100-I-000014-E-00

Observe protection notice according to ISO 16016. Subject to changes. 1 / 26

Table of contents

Table of contents

1 About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 Valid scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Target groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3 Other applicable documents . . . . . . . . . . . . . . . . 4

1.4 Warning labels and symbols . . . . . . . . . . . . . . . . 5

1.5 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Intended use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 General safety instructions . . . . . . . . . . . . . . . . . . 62.2.1 Product safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2.2 Operator's obligations . . . . . . . . . . . . . . . . . . . . . . . . 72.2.3 Duties of the operating staff . . . . . . . . . . . . . . . . . 7

2.3 Special hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.3.1 Potentially explosive areas . . . . . . . . . . . . . . . . . . 72.3.2 Hazardous pumped liquids . . . . . . . . . . . . . . . . . . 7

3 Layout and function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.1 Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1.1 Type plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.1.2 Pump type code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.2 Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4 Transport, storage and disposal . . . . . . . . . . . . . . . . . . 11

4.1 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.1.1 Unpacking and inspection on delivery . . . . . . 114.1.2 Lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2 Preservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.4 Remove the preservative . . . . . . . . . . . . . . . . . . . . 12

4.5 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5 Setup and connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1 Preparing the installation . . . . . . . . . . . . . . . . . . . . 135.1.1 Check the environment . . . . . . . . . . . . . . . . . . . . . . 135.1.2 Prepare the installation site . . . . . . . . . . . . . . . . . 135.1.3 Remove the preservative . . . . . . . . . . . . . . . . . . . . 135.1.4 Choose orientation for the installation . . . . . . 13

5.2 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.3 Planning the piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.3.1 Avoid contamination of the piping . . . . . . . . . . . 145.3.2 Lay out supports and flange connec-

tions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145.3.3 Specify nominal diameters . . . . . . . . . . . . . . . . . . 145.3.4 Specify pipe lengths . . . . . . . . . . . . . . . . . . . . . . . . . 145.3.5 Optimise cross-section and bends . . . . . . . . . . 145.3.6 Arrange for safety and monitoring devices

(recommended) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.4 Connecting the pipes . . . . . . . . . . . . . . . . . . . . . . . . 155.4.1 Install the suction pipe . . . . . . . . . . . . . . . . . . . . . . . 155.4.2 Install the pressure pipe . . . . . . . . . . . . . . . . . . . . . 155.4.3 Check that pipe connections are

stress-free . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.5 Install any additional functions . . . . . . . . . . . . . . 155.5.1 Install connection for leaking oil . . . . . . . . . . . . . 155.5.2 Install cooling/heating . . . . . . . . . . . . . . . . . . . . . . . . 15

5.6 Connect the electrics . . . . . . . . . . . . . . . . . . . . . . . . 155.6.1 Connect the motor . . . . . . . . . . . . . . . . . . . . . . . . . . . 155.6.2 Check the direction of rotation . . . . . . . . . . . . . . 15

6 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.1 Preparations for the initial start-up . . . . . . . . . . 166.1.1 Identify the pump type . . . . . . . . . . . . . . . . . . . . . . . 166.1.2 Cool or heat the pumped liquid . . . . . . . . . . . . . 166.1.3 Fill the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1.4 Check the connection for leaking oil . . . . . . . . 16

6.2 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2.1 Switch-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.2.2 Switch-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.3 Interrupting operation . . . . . . . . . . . . . . . . . . . . . . . . 17

6.4 Returning to operation . . . . . . . . . . . . . . . . . . . . . . . 17

7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.1 Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.2 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187.2.1 Antifriction bearing . . . . . . . . . . . . . . . . . . . . . . . . . . . 187.2.2 Replace radial shaft seal ring . . . . . . . . . . . . . . . 19

7.3 Returning the pump to the manufactu-rer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

7.4 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

7.5 Ordering replacement parts . . . . . . . . . . . . . . . . . 19

8 Disturbance recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.1 QT, QX, QXV pumps . . . . . . . . . . . . . . . . . . . . . . . . . 20

8.2 QXM (drive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

9 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

9.1 Technical specifications . . . . . . . . . . . . . . . . . . . . . . 249.1.1 Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 249.1.2 Noise pressure level . . . . . . . . . . . . . . . . . . . . . . . . . 249.1.3 Tightening torque for cover/flange . . . . . . . . . . 249.1.4 Pumped liquid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249.1.5 Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249.1.6 Contamination class . . . . . . . . . . . . . . . . . . . . . . . . . 259.1.7 Run-in cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259.1.8 Flow speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269.1.9 Pump input pressure . . . . . . . . . . . . . . . . . . . . . . . . . 269.1.10 Preservative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269.1.11 Cleaning agents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

9.2 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

2 / 26 100-I-000014-E-00 / 07.2005

Table of contents

List of figures

Fig. 1 Type plate (example) . . . . . . . . . . . . . . . . . . . . . . . . 8

Fig. 2 Pump type code (example) . . . . . . . . . . . . . . . . . . 8

Fig. 3 QX low pressure pump (pressure range1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Fig. 4 QX low pressure pump (pressure range2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Fig. 5 QX high pressure pump (pressure range3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Fig. 6 Fastening the lifting gear to the pump . . . . . . 11

Fig. 7 Run-in cycle QT/QX/QXM overall run-intime 10 minutes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Fig. 8 Run-in cycle QXV overall run-in time21 minutes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

List of tables

Tab. 1 Target groups and their duties . . . . . . . . . . . . . . 4

Tab. 2 Other applicable documents and theirpurpose . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Tab. 3 Warning labels and consequences ofdisregarding them . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Tab. 4 Symbols and their meaning . . . . . . . . . . . . . . . . . 5

Tab. 5 Series and function . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Tab. 6 Special versions (extract) . . . . . . . . . . . . . . . . . . . . 8

Tab. 7 Action to be taken for operationalinterruptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Tab. 8 Actions to be taken after prolonged shutdownperiods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Tab. 9 Assignment of fault numbers QT, QX, QXVpumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Tab. 10 Fault table QT, QX, QXV pumps . . . . . . . . . . 21

Tab. 11 Assignment of fault numbers - QXM(drive) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Tab. 12 Fault table QXM (drive) . . . . . . . . . . . . . . . . . . . . 23

Tab. 13 Ambient conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Tab. 14 Tightening torque for cover/flange . . . . . . . . . . 24

Tab. 15 Pumped liquid by group . . . . . . . . . . . . . . . . . . . . . 24

Tab. 16 Categories of pumped liquids . . . . . . . . . . . . . . . 24

Tab. 17 Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Tab. 18 Contamination class . . . . . . . . . . . . . . . . . . . . . . . . . 25

Tab. 19 Flow speed (recommended) . . . . . . . . . . . . . . . . 26

Tab. 20 Pump input pressure (absolute) -minimum .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Tab. 21 Pump input pressure (absolute) -maximum .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Tab. 22 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

100-I-000014-E-00 / 07.2005 3 / 26

About this document

1 About this document

1.1 Valid scope

In this manual, all series, even the QXM drive, will be gene-rally called pumps.

This manual

is part of the pump,

applies to all of the pump series mentioned above,

describes safe and appropriate operation during all opera-ting phases.

1.2 Target groups

Target group Duty

Operating company Keep this manual available where the device is used, includingfor later use.

Ensure that personnel read and follow the instructions in thismanual and the other applicable documents, especially all safetyinformation and warnings.

Observe any additional rules and regulations referring to theinstallation.

Qualified staff, fitter Read, observe and follow this manual and the other applicabledocuments, especially all safety information and warnings.

Tab. 1 Target groups and their duties

1.3 Other applicable documents

Document Purpose

ATEX additional instructions 100-I-000015-.. Only when operated in potentially explosive areas

Technical description Brochure and confirmation of order with technical details and operatinglimits

Installation and commissioning for internal gearpumps and motors, series QX, QXM, QXV, QT andQR 410.10.00.00

Brief introduction (supplied with every pump)

Tab. 2 Other applicable documents and their purpose

4 / 26 100-I-000014-E-00 / 07.2005

About this document

1.4 Warning labels and symbols

Warning label Risk level Consequences of disregard

DANGERImmediate acute risk Fatal injury, grievous bodily harm

WARNINGPotential acute risk Fatal injury, grievous bodily harm

CAUTIONPotentially hazardous situation Minor bodily harm

CAUTIONPotentially hazardous situation Material damage

Tab. 3 Warning labels and consequences of disregarding them

Symbol Meaning

Safety warning sign

Take note of all information highlighted by the safety warning signand follow the instructions to avoid injury or death.

Instruction

1. , 2. , ... Multiple step instructions

Precondition

Cross reference

Information, note

Tab. 4 Symbols and their meaning

1.5 Series

Pump series Function

QT Internal gear pump 1)

QX Internal gear pump 1)

QXV Internal gear pump for low viscosity liquids 1)

QXM Internal gear drive 1)

Tab. 5 Series and function

1) called pump in the following

100-I-000014-E-00 / 07.2005 5 / 26

Security

2 Security

The manufacturer does not accept any liability for damageresulting from disregard of the entire documentation.

2.1 Intended use

Only use the pump to pump the agreed liquids (Technicaldescription).

Maintain operating limits and size-dependent minimumflow rate.

Do not allow to run dry.Damage occurs within a few seconds. Make certain that the pump is never commissioned and

never operated without a pumped liquid.

Avoid cavitation: Maintain minimum pressure at pump input

( 9.1.9 Pump input pressure, Page 26).

Avoid overheating: Maintain permissible values of pressure, temperature,

speed of rotation and on-time.

Avoid damage to motor: Do not open the pressure release valve beyond the

agreed operating point. Do not exceed the allowed number of motor switch-ons

per hour ( Manufacturer's specifications).

Consult with the manufacturer about any other use of thepump.

Prevention of obvious misuse (examples)

Observe the operating limits of the pump regarding tempe-rature, pressure, flow rate and speed of rotation ( Tech-nical description).

2.2 General safety instructions

Take note of the following instructions before carrying outany work.

2.2.1 Product safety

The pump has been constructed using the latest technologyand accepted technical safety rules. Nevertheless, operationof the pump can involve risk to life and health of the user or ofthird parties, or risk of damage to the pump and other property.

Only operate the pump if it is in perfect technical condition;only use it as intended, staying aware of safety and risks,and adhering to the instructions in this manual.

Keep this manual and all other applicable documents com-plete, legible and accessible to staff at all times.

Refrain from any procedures that would endanger staff orthird parties.

Should there be any safety-relevant fault, deactivate thepump immediately and have the fault corrected by respon-sible personnel.

In addition to the entire documentation for the product,always comply with statutory or other safety and accident-prevention rules as well as with the applicable standardsand guidelines in the country where the pump is operated.

6 / 26 100-I-000014-E-00 / 07.2005

Security

2.2.2 Operator's obligations

Safety-conscious operation

Only operate the pump if it is in perfect technical condition;only use it as intended, staying aware of safety and risks,and adhering to the instructions in this manual.

Ensure that the following are observed and monitored: adherence to intended use, statutory or other safety and accident-prevention rules, safety regulations governing the handling of hazardous

substances, applicable standards and guidelines in the country

where the pump is operated.

Make protective equipment available.

Staff qualifications

Make certain that all personnel tasked with work on thepump have read and understood this manual and all otherapplicable documents, especially the safety, maintenanceand repair instructions, before they begin the job.

Organize responsibilities, who is in charge of any specificduty and how personnel is supervised.

Ensure that all work is carried out by specialist techniciansonly: fitting, repair and maintenance work, work on the pump electrical system.

Make certain that trainee personnel may only work on thepump when supervised by a specialist technician.

Safety installations

Provide the following safety installations and verify theirintegrity: for hot and moving parts: on-site protection against

accidental contact with the pump, if electrostatic charging is possible: fit appropriate ear-

thing.

Warranty

Obtain the manufacturer's approval prior to carrying outany modification, repair or alterations during the warrantyperiod.

Only use original parts or parts that have been approvedby the manufacturer.

2.2.3 Duties of the operating staff

Observe and keep legible all instructions given on thepump, e.g. the arrow indicating the direction of rotationand the markings for fluid connections.

Do not remove the protection against accidental contact forhot, cold and moving parts during operation.

Use protective equipment if necessary.

Carry out work on the pump only while the pump is notrunning.

Isolate the motor from its supply voltage and keep it lockedin that state while carrying out any fitting or maintenancework.

Mount the safety installations on the pump according toregulations after completion of work on the pump.

2.3 Special hazards

2.3.1 Potentially explosive areas

( ATEX additional instructions).

2.3.2 Hazardous pumped liquids

Observe the safety regulations for the handling of hazar-dous substances when working with hazardous pumpedliquids (e.g. hot, flammable, explosive, poisonous orpotentially harmful).

Use protective equipment when carrying out any work onthe pump.

100-I-000014-E-00 / 07.2005 7 / 26

Layout and function

3 Layout and function

3.1 Labels

3.1.1 Type plate

Type

P d bar

cm /U3V g

Nr.

MADE IN GERMANY

1

3

2

4

Fig. 1 Type plate (example)

1 Pump type

2 Constant pressure [bar]

3 Geometrical displacement/delivery/swallowing [cm3/rev.]

4 Serial number

3.1.2 Pump type code

12

34

QX 3 - 040 0 95

5

6

R

Fig. 2 Pump type code (example)

1 Pump series

2 Size

3 Pressure range

4 Displacement/delivery/swallowing [cm3/rev.]

5 Direction of rotation (R=clockwise, L=anti-clockwise, N=both)

6 Special version (optional)

The following table shows an extract from possible special ver-sions.

Number Characteristic

Separate connection for leaking oil

QX 2-5 G 1/4"

QX 6 G 3/8"

06

QX 8 G 1/2"

09 FPM (Viton) sealing material

12 2 hole fixing flange according toISO 3019/2 (metric)

14 Operating temperature up to 160 C

29 Hydraulic liquid HFB and HFC, size 2-5

66 4 hole fixing flange according toISO 3019/2 (metric)

2. vacuum connection for

QX 61 SAE 2"

83

QX 81 SAE 2.5"

86

165

169

Hydraulic liquid HFB and HFC, size 6+8

Tab. 6 Special versions (extract)

8 / 26 100-I-000014-E-00 / 07.2005

Layout and function

3.2 Construction

1 2 3 4

x

x

x-x67 6

5

P

S

Fig. 3 QX low pressure pump (pressure range 1)

1 Pump shaft

2 Flange with radial shaft seal rings

3 Antifriction bearing

4 Gear wheels

5 Gear wheel housing

6 Plain bearing

7 Housing

x

x

1 2 3 54

x-x667

P

S

Fig. 4 QX low pressure pump (pressure range 2)

1 Pump shaft



4 Gear wheels

5 Gear wheel housing

6 Plain bearing

7 Housing

100-I-000014-E-00 / 07.2005 9 / 26

Layout and function

1 52 3 4

x

x

x-x7 79 8 6

P

S

Fig. 5 QX high pressure pump (pressure range 3)

1 Pump shaft



4 Gear wheels

5 Connection for leaking oil (optional)

6 Gear wheel housing 2

7 Plain bearing

8 Gear wheel housing 1

9 Housing

10 / 26 100-I-000014-E-00 / 07.2005

Transport, storage and disposal

4 Transport, storage and disposal

4.1 Transport

Weight ( Technical description).

4.1.1 Unpacking and inspection on delivery

1. Unpack the pump on delivery and inspect for transportdamage.

2. Report any transport damage to the manufacturer withoutdelay.

3. Dispose of packaging material according to local regula-tions.

4.1.2 Lifting

DANGER

Death or crushed limbs caused by falling loads!

Use lifting gear appropriate for the total weight to be lifted.

Fasten the lifting gear as shown in the illustrations below.

Do not stand under suspended loads.

1

Fig. 6 Fastening the lifting gear to the pump

1. If only one thread is available for eye bolt, put the secondsling around the end of the pump.

2. Lift the pump properly.

100-I-000014-E-00 / 07.2005 11 / 26

Transport, storage and disposal

4.2 Preservation

Only necessary when storing.

CAUTION

Material damage due to improper storage!

Preserve the pump properly inside and out for storage.

1. Select preservative according to the type and duration ofstorage ( 9.1.10 Preservative, Page 26).

2. Use the preservative as specified by the manufacturer.

3. Apply the preservative to all bare metal surfaces inside andout.

4.3 Storage

CAUTION

Material damage due to inappropriate storage!

Preserve and store the pump properly.

1. Seal all openings with blank flanges, blind plugs or plasticcovers.

2. Make certain that the storage room meets the followingconditions: dry frost-free vibration-free

3. Turn shaft once a month.

4. Make certain that the shaft and the bearing change theirrotational position in the process.

4.4 Remove the preservative

Only necessary for pumps which have been preserved forstorage.

WARNING

Danger of poisoning due to preservative and cleaningagent in the vicinity of foodstuffs or drinking water!

Only use cleaning agents compatible with the pumpedliquid ( 9.1.11 Cleaning agents, Page 26).

Completely remove any preservative.

CAUTION

Damage to seals through incorrect cleaning agent!

Ensure that the cleaning agent does not attack the seals.

1. Select the cleaning agent according to the area of use.( 9.1.11 Cleaning agents, Page 26).

2. Dispose of preservative according to local regulations.

4.5 Disposal

Plastic parts can be contaminated by poisonous or radioac-tive pumped media to such an extent that cleaning will beinsufficient.

WARNING

Risk of poisoning and environmental damage caused bypumped liquid or oil!


Prior to disposal of the pump: Collect pumped liquid and oil or grease which drain out

and dispose of separately according to local regula-tions.

Neutralise residues of pumped liquid in the pump. Remove the preservative ( 4.4 Remove the preser-

vative, Page 12).

Dismount plastic parts and dispose of the parts accordingto local regulations.

Dispose of pump according to local regulations.

12 / 26 100-I-000014-E-00 / 07.2005

Setup and connection

5 Setup and connection

For pumps in potentially explosive areas ( ATEX additio-nal instructions 100-I-000015-..).

CAUTION

Material damage caused by dirt!

Do not remove transport protection until immediatelybefore installing the pump.

Do not remove covers and transport and sealing coversuntil just before connecting the piping to the pump.

5.1 Preparing the installation

5.1.1 Check the environment

1. Make certain that the required environmental conditionsare met ( 9.1.1 Ambient conditions, Page 24).

2. For installations > 1000 m above sea level, consult with themanufacturer.

5.1.2 Prepare the installation site

Make certain that the installation site meets the followingconditions: pump is freely accessible from all sides, sufficient space for installation/removal of the pipes

and for maintenance and repair work, especially for theremoval and installation of the pump and the motor,

pump not exposed to external vibrations (damage tobearings),

frost protection.

5.1.3 Remove the preservative

If the pump is to be commissioned directly after installationand connection: Remove any preservative before installa-tion ( 4.4 Remove the preservative, Page 12).

5.1.4 Choose orientation for the installation

The crescent seal internal-gear pump can be operated inany orientation.

Freely choose orientation for the installation.

5.2 Assembly

Note the brief introduction supplied ( Installation andcommissioning for crescent seal internal-gear pumps andmotors, series QX, QXM, QXV, QT and QR).

CAUTION

Material damage caused by knocks and blows!

Do not cant the coupling halves when sliding on.

Do not knock or hit any component of the pump.

CAUTION

Material damage by recoil force of the coupling!

Connect the shaft and the motor with < 0.2 mm misalign-ment.

CAUTION

Material damage due to axial forces!

Only operate the pump with direct drive and elastic cou-pling.

1. Use coupling with H7 tolerance on the coupling bore.

2. Apply a very thin film of molybdenum disulphide(e.g. Molykote) on the pump and motor shaft ends.

3. Insert fitting keys.

4. Without mounting device: Remove rubber buffers and heatcoupling halves to approx. 100 C.

5. Slide on the pump-side and motor-side coupling halvesuntil the shaft ends and the coupling centre are flush witheach other. Keep the specified distance between the cou-pling halves ( Assembly instructions for the coupling).

6. Tighten the grub screws on both coupling halves.

100-I-000014-E-00 / 07.2005 13 / 26


5.3 Planning the piping

Use flexible piping (recommended).

For fixed piping use seamless precision steel piping to DIN2391 (recommended).

5.3.1 Avoid contamination of the piping

CAUTION

Material damage due to impurities in the pump!

Make certain that no impurities can get into the pump.

1. Clean all piping components and armatures prior to assem-bly.

2. Ensure that no flange gaskets are protruding inwards.

3. Remove blank flanges, plugs, protective films and/or pro-tective paints from the flanges.

5.3.2 Lay out supports and flange connections

CAUTION

Material damage due to excessive force and torque frompiping to pump!

Minimise pipe forces and take every possible operatingcondition into account: cold/warm empty/full unpressurised/pressurised shift in position of flanges

Ensure that pipe can slide freely in the supports and willnot seize up through corrosion.

5.3.3 Specify nominal diameters

Keep flow resistance in pipes as low as possible.

1. Set the nominal diameters to correspond to the size and tothe pipe flanges.

2. Note the maximum flow speeds ( 9.1.8 Flow speed,Page 26).

5.3.4 Specify pipe lengths

Set the maximum length of pipe network according topressure at pump input ( 9.1.9 Pump input pressure,Page 26).

5.3.5 Optimise cross-section and bends

1. Avoid bends with radius of less than 1.5 times the pipediameter.

2. Avoid abrupt changes of cross-section in the pipe network.

5.3.6 Arrange for safety and monitoring devices

(recommended)

Avoid contamination

1. Note permissible contamination ( 9.1.6 Contamination

class, Page 25).

2. Integrate filter into the suction pipe.

3. To monitor contamination, fit a differential manometer with

a contact manometer.

Avoid excessive pressure

Fit a pressure-relief valve.

Avoid overheating

Enable a temperature monitor to turn the pump off.

Avoid reverse operation

Install a non-return valve between the pressure joint and

the stop valve to ensure that the liquid will not flow back

when the pump is switched off.

Provide for isolating and shut-off devices for the pipes

For maintenance and repair work

Fit stop valves before and after the pump.

Enable measurement of the operating conditions

1. For pressure measurements, fit manometers before and

after the pump.

2. Provide for motor torque measurements.

3. Provide for pump temperature measurements.

14 / 26 100-I-000014-E-00 / 07.2005


5.4 Connecting the pipes

CAUTION

Damage due to impurities in the pump!

Ensure that no impurities can get into the pump.

5.4.1 Install the suction pipe

1. Remove transport and sealing covers from the pump.

2. Avoid air pockets: Run pipes with a continuous slope up tothe pump.

3. Ensure that no gaskets protrude inwards.

4. For hydraulic systems: Connect the suction pipe to the tanka few cm below the minimum liquid level.

5.4.2 Install the pressure pipe

1. Remove transport and sealing covers from the pump.

2. Fit the pressure pipe.

3. Ensure that no gaskets protrude inwards.

5.4.3 Check that pipe connections are stress-free

Pipe installed and cooled down

1. Separate the connecting flanges of the pipes from thepump.

2. Check that pipes can move freely in all directions theymight be expected to expand.

3. Make certain that the flange surfaces are parallel.

4. Reconnect the pipe flanges to the pump.

5.5 Install any additional functions

5.5.1 Install connection for leaking oil

With QXV/QXM, to recycle leaks back into the pumpedliquid circuit.

With QX/QT, this is only possible if the pump is orderedaccordingly.

CAUTION

Damage caused by overheating!

Collect leaking oil < 1.5 bar absolute in tank.

Ensure that connection dimensions for leaking oil are ade-quate and take the shortest route to the tank.

Install connection for leaking oil with screw in fitting on thepump.

5.5.2 Install cooling/heating

Recommended for the ideal temperature of the pumpedliquid ( 9.1.1 Ambient conditions, Page 24).

1. Choose heating or cooling as your environment dictates.

2. Install the connections and then install the cooling/heatingas specified by the manufacturer.

5.6 Connect the electrics

DANGER

Risk of fatal injury through electric shock!

Have all electrical work carried out by qualified electriciansonly.

DANGER

Risk of fatal injury due to rotating parts!

When carrying out any fitting or maintenance work, isolatethe motor from its supply voltage and keep it locked in thatstate.

5.6.1 Connect the motor

Follow the manufacturer's instructions.

1. Connect the motor according to the circuit diagram.

2. Ensure that the electrical energy does not present any risk.

3. Install an EMERGENCY OFF switch.

5.6.2 Check the direction of rotation

CAUTION

Damage caused by running dry!

Decouple the motor from the pump.

As default setting, the pump rotates clockwise. Anti-cloc-kwise is also possible.

1. Switch motor on and immediately off again.

2. Check that the motor's direction of rotation corresponds tothe arrow showing the direction of rotation on the pump.

3. If the direction of rotation is different: swap two phases.

4. Recouple the motor to the pump.

100-I-000014-E-00 / 07.2005 15 / 26

Operation

6 Operation


6.1 Preparations for the initial start-up

6.1.1 Identify the pump type

Identify the pump type ( Technical description).

6.1.2 Cool or heat the pumped liquid

For cooling or heating liquid ensure: adequate quantity required parameters

6.1.3 Fill the system

WARNING

Risk of injury and poisoning due to hazardous pumpedliquids!

Safely collect any leaking pumped liquid and dispose of itin accordance with environmental rules and requirements.

CAUTION

Material damage due to incorrect or contaminated pumpedliquid!

Use approved pumped liquid ( 9.1.4 Pumped liquid,Page 24).

Note permissible viscosity ( 9.1.5 Viscosity, Page 24).

Note permissible contamination ( 9.1.6 Contaminationclass, Page 25).

CAUTION


Make certain that the pump is properly filled.

When operating pump: Ensure minimum liquid level intank.

1. Fill the pump and the suction pipe with pumped liquid.

Fill the pump and suction pipe with pumped liquid by turningthe pump by hand or by pulsing the drive (recommended).

2. Switchmotor on and pressurise pumped liquid with 20 bar(consult manufacturer for higher pressure).

3. Ensure that no joints or connections leak.

6.1.4 Check the connection for leaking oil

Collect leaking oil with < 1.5 bar absolute in a tank.

6.2 Start-up

6.2.1 Switch-on

The pump is correctly installed and connected

The motor is correctly installed and connected

All connections are stress-free and leak-free

All safety installations have been fitted and tested for inte-grity

The pump has been correctly prepared, filled and bled

DANGER

Risk of injury due to running pump!

Do not touch the running pump.

Do not carry out any work on the running pump.

Allow the pump to cool down completely before starting anywork on it.

DANGER

Risk of injury and poisoning caused by pumped liquidspraying out!


CAUTION


Make certain that the pump is properly filled.

Ensure minimum liquid level in tank.

CAUTION

Damage through cavitation!

To bleed the pump operate pressure free.

Only pressurise pumped liquid that has been completelybled.

CAUTION

Damage caused by temperature shock!

Ensure that the temperature difference between the pumpand the pumped liquid is < 25 C.

1. Note run-in cycle ( 9.1.7 Run-in cycle, Page 25).

2. Switch on the motor and check that it runs smoothly.

3. After the first start, switch the pump off and wait until thereare no more air pockets in the pumped liquid.

4. Switchmotor on and pressurise pumped liquid with 20 bar(consult manufacturer for higher pressure).

5. After the initial stress caused by pressure and operatingtemperature, check that the pump is not leaking.

6. Increase the pressure as specified in the run-in cycle.

16 / 26 100-I-000014-E-00 / 07.2005

Operation

7. After the initial stress caused by pressure and operatingtemperature, check that the pump is not leaking.

6.2.2 Switch-off

The pressure-side valve is closed (recommended)

WARNING

Risk of injury caused by hot pump parts!


1. Switch the control to circulate to the tank.

2. Switch off the motor.

3. Check all fixing bolts and tighten if necessary.

6.3 Interrupting operation

WARNING


Safely collect any leaking pumped liquid and dispose of itin accordance with environmental rules and requirements.

Carry out the following measures when operation is inter-rupted:

Pump is Action

emptied Close stop valves on bothsides of pump.

disassembled Isolate the motor fromits power supply andsecure against unauthorizedswitch-on.

put into storage Pump preserve

( 4.2 Preservation,Page 12).

store ( 4.3 Storage,Page 12).

Tab. 7 Action to be taken for operational interruptions

6.4 Returning to operation

1. After shutdowns, take the following actions before restar-ting the pump:

Shutdownduration

Action

> 6 months Return QXV pumps tomanufacturer.

Other pumps: Replaceshaft seal with repairkit ( 9.2 Spare parts,Page 26).

> 2 years Return pumps tomanufacturer.

Tab. 8 Actions to be taken after prolongedshutdown periods

2. Carry out all steps as for the initial start-up ( 6.2 Start-up,Page 16).

100-I-000014-E-00 / 07.2005 17 / 26

Maintenance

7 Maintenance


Trained service technicians are available for fitting andrepair jobs.

7.1 Inspections

The inspection intervals depend on the load placed on thepump.

DANGER




WARNING



1. Check at appropriate intervals: compliance with minimum flow rate normal operating conditions unchanged for hydraulic systems: check liquid level in tank and

check hydraulic liquid for viscosity, ageing and conta-mination

coupling alignment and condition of elastic elements

2. For trouble-free operation, always ensure the following: no dry running no leaks no cavitation suction-side gate valves open unobstructed and clean filters sufficient supply pressure no unusual running noises and vibrations no excessive leakage at the shaft seal proper functioning of auxiliary operating systems

7.2 Maintenance

DANGER




When carrying out any fitting or maintenance work, isolatethe motor from its supply voltage and keep it locked in thatstate.

DANGER

Risk of fatal injury through electric shock!

Have all electrical work carried out by qualified electriciansonly.

WARNING

Risk of injury and poisoning due to hazardous or hot pum-ped liquids!


Allow the pump to cool down completely before commen-cing any work.

Make certain that the pump is unpressurised.

Empty the pump, safely collect the pumped liquid and dis-pose of it in accordance with environmental rules and requi-rements.

CAUTION

Damage due to disassembly of the pump!

Do not take the pump to pieces.

Return faulty pumps to the manufacturer ( 7.3 Returningthe pump to the manufacturer, Page 19).

For QT, QX and QXM pumps, only the repair set can bereplaced ( 9.2 Spare parts, Page 26).

7.2.1 Antifriction bearing

Faulty antifriction bearings increase noise levels, torque ortemperature.

Return pumps with faulty bearings to the manufacturer( 7.3 Returning the pump to the manufacturer, Page 19).

18 / 26 100-I-000014-E-00 / 07.2005

Maintenance

7.2.2 Replace radial shaft seal ring

Replace cover/flange with faulty radial shaft seal ring withrepair set ( 9.2 Spare parts, Page 26).

1. Remove pump from system.

2. Remove fitting key from pump shaft.

3. Remove cheese head bolts from cover/flange.

4. Pull off cover/flange with old radial shaft seal ring fromshaft.

5. Grease pump shaft.

6. Slide repair set onto shaft and fix in place with cheese headbolts.

7. Fit fitting key into pump shaft.

7.3 Returning the pump to the

manufacturer

Pump is unpressurised

Pump is completely empty

Electrical connections are isolated and the motor is secu-red against switch-on

Pump has cooled down

Coupling guard has been removed

For couplings with a spacer: Spacer has been removed

Auxiliary operating systems are shut down, unpressurisedand emptied

Manometer connections, manometer and fixtures havebeen removed

1. Flush the pump and decontaminate if hazardous liquid hasbeen pumped.

2. Return the complete pump (not disassembled) to themanufacturer.

7.4 Assembly

1. Keep to specified torque ( Technical description).

2. Fit the pump into the system ( 5 Setup and connection,Page 13).

7.5 Ordering replacement parts

For trouble-free replacement in case of any damage werecommend keeping replacement pumps or spare partsavailable on site ( 9.2 Spare parts, Page 26).

To order spare parts keep the pump type ready ( typeplate).

100-I-000014-E-00 / 07.2005 19 / 26

Disturbance recovery

8 Disturbance recovery

8.1 QT, QX, QXV pumps

For faults that do not appear in the following table or faults thatcannot be traced back to the suggested causes, please consultwith the manufacturer.

Possible faults are identified by a fault number in the tablebelow. Use this number to find cause and remedy in the trou-bleshooting list.

Fault Number

Pump not pumping 1

Pumping rate insufficient 2

Pumping rate excessive 3

Pumping pressure insufficient 4

Pumping pressure excessive 5

Pump running roughly 6

Roller bearing temperatures too high 7

Pump leaking 8

Motor power uptake excessive 9

Tab. 9 Assignment of fault numbers QT, QX, QXV pumps

Fault number

1 2 3 4 5 6 7 8 9

Cause Remedy

X Transport and sealing cover not removed Remove transport and sealing cover.

If damage caused by running dry,return to the manufacturer.

X Supply/suction line and/or pressure lineclosed by valve

Open the valve.

X Liquid level in the tank < minimum Top up the pumped liquid.

X Coupling destroyed Replace the coupling.

X Suction pipe too short Lengthen suction pipe.

X X X Suction pipe leaking Tighten bolts on pipes or flanges.

Seal thread.

X X X Motor speed insufficient Compare required rotational speedof motor with type plate on pump.Replace motor if necessary.

Increase motor speed, if speed controlavailable.

X X Supply/suction pipe not fully opened Open the armature.

X X Faulty control Repair control.

X X Burst pipe underneath tank lid Replace pipe.

X X X X Supply/suction pipe, pump or suctionstrainer blocked or encrusted

Clean supply/suction pipes, pump orsuction strainer.

X X X Supply/suction pipe cross-section toonarrow

Increase cross-section.

20 / 26 100-I-000014-E-00 / 07.2005


Fault number

1 2 3 4 5 6 7 8 9

Cause Remedy

X X X Hydraulic components of the pump dirty,clotted or encrusted

Return pump to manufacturer.

Clean the components.

X X Supply/suction pipe and pump not bledproperly or not filled up completely

Fill up pump and/or piping completelyand bleed them.

X X Supply/suction line contains air pockets Install armature for bleeding.

Correct piping layout.

X X X X Air sucked in Seal source of malfunction.

X X X X Excessive amount of gas: pump iscavitating

Consult with manufacturer.

X X X Viscosity or density of the pumped liquidoutside the specified range for the pump


X X X Temperature of pumped liquid too high:pump is cavitating

Increase supply pressure.

Lower temperature.

Inquire with manufacturer.

X X X Pressure-side armature not openedsufficiently

Open pressure-side armature.

X X X X Pressure pipe blocked Clean pressure pipe.

X X X X Pump rotating the wrong way Swap any two phases at the motor.

X X X X Pump components worn Return pump to manufacturer.

X X X X X Motor speed excessive Compare required rotational speedof motor with type plate on pump.Replace motor if necessary.

Reduce motor speed with speedcontrol, if available.

X X X Faulty antifriction bearing in pump Return pump to manufacturer.

X X Faulty antifriction bearing in motor Replace antifriction bearing.

X Connecting bolts not tightened correctly Tighten connecting bolts.

X Worn radial shaft seal ring Return QXV pumps to manufacturer.

Other pumps: replace shaft seal withrepair kit ( 9.2 Spare parts, Page 26).

X Faulty housing seal Return pump to manufacturer.

X X X X Pump distorted Check pipe connections and pumpfixings.

X Worn coupling Replace the coupling.

X X X X Motor running on 2 phases Check fuse and replace it if necessary.

Check cable connections andinsulation.

Tab. 10 Fault table QT, QX, QXV pumps

100-I-000014-E-00 / 07.2005 21 / 26


8.2 QXM (drive)

For faults that do not appear in the following table or faults thatcannot be traced back to the suggested causes, please consultwith the manufacturer.

Possible faults are identified by a fault number in the tablebelow. Use this number to find the cause and remedy in thetroubleshooting list.

Fault Number

Drive does not start 1

Drive rotates too slowly 2

Drive rotates too quickly 3

Insufficient torque 4

Insufficient power delivered 5

Drive is leaking 6

Tab. 11 Assignment of fault numbers - QXM (drive)

22 / 26 100-I-000014-E-00 / 07.2005


Fault number

1 2 3 4 5 6

Cause Remedy

X Transport and sealing cover not removed Remove transport and sealing cover.

If damage caused by running dry, return tothe manufacturer.

X Supply and/or pressure line closed by valve Open valve.

X Coupling destroyed Replace coupling.

X X X Rotational speed too low or start up torque toohigh

Compare required rotational speed of drivewith type plate. Replace motor if necessary.

Increase motor speed, if speed controlavailable.

X X Supply/drain pipe not fully opened Open armature.

X X Faulty control Repair control.

X X X X Supply/drain pipe, drive blocked or encrusted Clean supply/drain pipe, drive.

X X X Supply/drain pipe cross-section too narrow Increase cross-section.

X X X Hydraulic components of the pump dirty,clotted or encrusted

Return drive to manufacturer.

X X X X Excessive amount of gas Consult with manufacturer.

X X Viscosity or density of the pumped liquidoutside the specified range for the drive


X X X Temperature of pumped liquid too high Lower temperature.

Inquire with manufacturer.

X X X X Drive rotates in wrong direction Exchange connections for supply and drainpipes.

X X X Pump components worn Return pump to manufacturer.

X X X Excessive supply Compare required rotational speed of drivewith type plate. Replace motor if necessary.

Reduce supply.

Reduce motor speed with speed control, ifavailable.

X Drive distorted Check pipe connections and drive fixings.

X Worn coupling Replace coupling.

Tab. 12 Fault table QXM (drive)

100-I-000014-E-00 / 07.2005 23 / 26

Appendix

9 Appendix

9.1 Technical specifications

Further technical details ( Technical description).

9.1.1 Ambient conditions

Consult with the manufacturer about operation under otherambient conditions.

Temperature [C]1) Relative humidity[%]

permis-sible

ideal long-term

short-term

Instal-lationheightabovesea level[m]

20 to+80

+30 to+50

85 100 1000

Tab. 13 Ambient conditions

1) depends on permissible viscosity, amongst other things

2) consult with the manufacturer for higher installation

9.1.2 Noise pressure level

For exact details on noise pressure level ( Technical des-cription).

9.1.3 Tightening torque for cover/flange

Repair set Pump type Tighteningtorque [Nm]

QX2 10 2

QX3 20 2

QX4 40 5

QX5 80 10

QX6 160 10

QX, QXM

QX8 320 20

QT2 10 2

QT3 10 2

QT4 10 2

QT5 20 2

QT6 20 2

QT

QT8 20 2

Tab. 14 Tightening torque for cover/flange

9.1.4 Pumped liquid

HLP and HFC

Forseries

Pum-pedliquid(group)

Max.load[N/mm2]3)

Tempe-rature[C]

Precondition

QT, QX,QXM,QXV

HLP1) 30 80

Pumpedliquidcorrespondsto permissibleviscosity

QT, QX,QXM

HFC2) 30 50Pump/motoris a specialversion

Tab. 15 Pumped liquid by group

1) hydraulic oils to DIN 51524, part 2

2) low flammability hydraulic liquid to DIN 51502

3) recommended by Brugger DIN 51347-2

Other pumped liquids

For series Pumped liquid

Mineral oils/synthetic liquids

QT, QX, QXM Turbine oils/biologicallydegradable oils

Low viscosity mineral oils

Fuels

Low flammability liquid (HFA)

Calibrating liquids (for test rigs)

QXV

amongst others

Tab. 16 Categories of pumped liquids

9.1.5 Viscosity

For series Viscosity [mm2/s]

QT 20 300

QX, QXM 10 300

QXV 0.8 10

Tab. 17 Viscosity

24 / 26 100-I-000014-E-00 / 07.2005

Appendix

9.1.6 Contamination class

ClassFor series

to NAS 1638 to ISO 4406

QT, QX, QXM 9 20/18/15

QXV 8 19/17/14

Tab. 18 Contamination class

9.1.7 Run-in cycle

50

100

y

1 2 3 4 5 6 7 0

8 9 10 11x140s

120s

120s 100s

10s30s20s

1s 2s

1s 2s 3s

1s 2s 3s 1s 2s 3s

2s 3s 3s 3s 5s

Fig. 7 Run-in cycle QT/QX/QXM overall run-in time 10 minutes

x time [min]

y working pressure [%]

0

50

100

2 4 6 8 10 12 14 16 18 20 22

280s

240s

240s

240s

20s 30s 14s

1s 2s 3s

1s 2s 3s

1s 2s 3s

1s 2s

2s 3s 3s 3s 5s

y

x

Fig. 8 Run-in cycle QXV overall run-in time 21 minutes

x time [min]

y working pressure [%]

100-I-000014-E-00 / 07.2005 25 / 26

Appendix

9.1.8 Flow speed

QT, QX, QXV pumps QXM (drive)

Suctionpipe [m/s]

Pressurepipe [m/s]

P1 [m/s] P2 [m/s]

1.8 7.0 7.0 7.0

Tab. 19 Flow speed (recommended)

9.1.9 Pump input pressure

If in doubt ask manufacturer about pump input pressure.

Minimum [bar]1)

Long-termStart phase

Mineral oil HFC Lowviscosity

0.6 0.85 0.90 0.90

Tab. 20 Pump input pressure (absolute) - minimum

1) Depending on size and pumped liquid

Maximum [bar]

Standard version Special version

1.5 > 1.51)

Tab. 21 Pump input pressure (absolute) - maximum

1) for QT and QX series external connection for leaking oilrequired

9.1.10 Preservative

High quality, mineral oil to DIN 51517 CL 46 or to ISO3448 VG 46 (recommended)

9.1.11 Cleaning agents

Benzine, wax solvents, diesel, petrol, alkaline cleaners

9.2 Spare parts

Type of drive Repair set Version

QT QT Cover completewith radial shaftseal ring, spacerdisc and O-ring

QX

QXM

QX Flange completewith radial shaftseal ring, spacerdisc and O-ring

QXV Leaky pumps must be returned to thefactory ( 7.3 Returning the pump tothe manufacturer, Page 19).

Tab. 22 Spare parts

26 / 26 100-I-000014-E-00 / 07.2005

Crescent seal internal-gear pump / driveTable of contentsList of figuresList of tables1 About this document1.1 Valid scope1.2 Target groups1.3 Other applicable documents1.4 Warning labels and symbols1.5 Series

2 Security2.1 Intended use2.2 General safety instructions2.2.1 Product safety2.2.2 Operator s obligationsSafety-conscious operationStaff qualificationsSafety installationsWarranty

2.2.3 Duties of the operating staff

2.3 Special hazards2.3.1 Potentially explosive areas2.3.2 Hazardous pumped liquids

3 Layout and function3.1 Labels3.1.1 Type plate3.1.2 Pump type code

3.2 Construction

4 Transport, storage and disposal4.1 Transport4.1.1 Unpacking and inspection on delivery4.1.2 Lifting

4.2 Preservation4.3 Storage4.4 Remove the preservative4.5 Disposal

5 Setup and connection5.1 Preparing the installation5.1.1 Check the environment5.1.2 Prepare the installation site5.1.3 Remove the preservative5.1.4 Choose orientation for the installation

5.2 Assembly5.3 Planning the piping5.3.1 Avoid contamination of the piping5.3.2 Lay out supports and flange connections5.3.3 Specify nominal diameters5.3.4 Specify pipe lengths5.3.5 Optimise cross-section and bends5.3.6 Arrange for safety and monitoring devices (recommended)Avoid contaminationAvoid excessive pressureAvoid overheatingAvoid reverse operationProvide for isolating and shut-off devices for the pipesEnable measurement of the operating conditions

5.4 Connecting the pipes5.4.1 Install the suction pipe5.4.2 Install the pressure pipe5.4.3 Check that pipe connections are stress-free

5.5 Install any additional functions5.5.1 Install connection for leaking oil5.5.2 Install cooling/heating

5.6 Connect the electrics5.6.1 Connect the motor5.6.2 Check the direction of rotation

6 Operation6.1 Preparations for the initial start-up6.1.1 Identify the pump type6.1.2 Cool or heat the pumped liquid6.1.3 Fill the system6.1.4 Check the connection for leaking oil

6.2 Start-up6.2.1 Switch-on6.2.2 Switch-off

6.3 Interrupting operation6.4 Returning to operation

7 Maintenance7.1 Inspections7.2 Maintenance7.2.1 Antifriction bearing7.2.2 Replace radial shaft seal ring

7.3 Returning the pump to the manufacturer7.4 Assembly7.5 Ordering replacement parts

8 Disturbance recovery8.1 QT, QX, QXV pumps8.2 QXM (drive)

9 Appendix9.1 Technical specifications9.1.1 Ambient conditions9.1.2 Noise pressure level9.1.3 Tightening torque for cover/flange9.1.4 Pumped liquidHLP and HFCOther pumped liquids

9.1.5 Viscosity9.1.6 Contamination class9.1.7 Run-in cycle9.1.8 Flow speed9.1.9 Pump input pressure9.1.10 Preservative9.1.11 Cleaning agents

9.2 Spare parts

Documents

Internal Gear Pump / Drive QT, QX, QXV, QXM series ... uso e manutenzione QT... · Internal Gear Pump / Drive QT, QX, QXV, QXM series Operating manual Bucher Hydraulics GmbH Industriestrasse