TECHNICIANMANUAL

Prevacuum Table - top AutoclaveModels 2340, 2540 EPV

CAT. No. MAN205-0062 Rev. ACOPYRIGHT

TECHNICIANMANUAL

Prevacuum Table - top AutoclaveModels 2340, 2540 EPV

Cat. No. MAN205-0062 Rev. A Tuttnauer Europe b.v., P.O. Box 7191, 4800GD Breda, The Netherlands. + 31/76-5423510

1TABLE OF CONTENTSPARAGRAPH PAGE NO.

1. INTRODUCTION 42. SYMBOL DESCRIPTION 43. INSTALLATION INSTRUCTIONS 5

3.1 Connections 54. TESTS 6

4.1. Installation Tests 64.2 Periodical Tests 6

5. WATER QUALITY 75.1 Water for Generating Steam 75.2 Reverse Osmosis 7

6. DESCRIPTION OF THE CONTROL SYSTEM. 86.1 Digital Board DIG T2 86.2 Analog Board ANL-T2 106.3 AC - Board - AC-T1 11

7. CALIBRATION OF TEMPERATURE AND PRESSURE 127.1 Method of Calibration 127.2 Temperature Calibration Procedure 137.3 Pressure Calibration Procedure 15

8. TEST POINTS 169. CHANGING PARAMETERS 17

9.1 General 179.2 Changing Parameters 179.3 Resetting the Back-Up Memory 239.4 Test Mode 23

10. REPLACEMENT PROCEDURES 2410.1 Dismantling the Outer Covers of the Autoclave 2410.2 Replacing the Safety Valve 2510.3 Replacing the electronics board (control panel) 2610.4 Replacing the Electronics Box 2610.5 Replacing Heating elements 2810.6 Replacing the Temperature Safety Thermostat 2910.7 Replacing the Cut-Off Thermostat 3010.8 Cleaning and Replacing the Water Level Electrodes 3110.9 Replacing the Drain Valve 32

2TABLE OF CONTENT (Cont.)PARAGRAPH PAGE NO.

10.10 Replacing the Pressure Gauge 3310.11 Replacing the Locking Device 3410.12 Replacing the Printer 3510.13 Replacing the Door Switch 3610.14 Replacing the circuit breaker 3710.15 Vacuum Pump 3810.16 The Water Reservoir 3910.17 Replacement of the Door Cover 41

11. TROUBLESHOOTING 4211.1 Displayed Messages and Reference to Trouble Shooting 4211.2 Pre-process malfunction 4311.3 In Process Malfunction 4911.4 Components Malfunction 5411.5 Mechanical malfunction 67

12. LIST OF SPARE PARTS 6913. VALVES NUMBERING 79

3TABLE OF CONTENT (Cont.)DRAWINGS PAGE NO.

Rear View 5Control System Block Diagram 8DIG- T2 Board 9ANL T2 Board 10AC-T1 Board 11Electronic Box 27Water Reservoir 40Front View 74Vessel Assembly 75Door Tightening Bolt Assembly 76Outer Cabinet Assembly 77Water Outlet Strainer 78Piping Drawing 81Electrical Drawing 82

41. INTRODUCTIONThis manual, together with the operators manual, forms the complete editionof the Operation and Maintenance instructions. This manual is intended for theuse of the technician. It is forbidden for unqualified and unauthorizedpersonnel to service the autoclave in accordance with the instructions in thismanual. Any unauthorized service may result in the invalidation of themanufacturers guarantee.The qualified technician shall be an authorized electrician with the rightqualifications in electronics and shall be familiar with the localtechnical/electrical regulations.

2. SYMBOL DESCRIPTION

Caution! Consult accompanying documents

Caution! Hot surface.

Caution! Hot steam.

Protective earth (Ground)

Stand by

53. INSTALLATION INSTRUCTIONSNetwork and connection should comply with the device consumption. It mustcomply with local installation and safety rules and regulations.The voltage supplied to the device must comply with the label + 5%.In order to avoid any injury by electrical hazard, it is mandatory for thecustomer to have installed an earth leakage relay in the electrical board towhich the autoclave is connected.This relay disconnects all the poles of the electric power line in case ofaccidental contact with the instrument metal enclosure, by the operator oranother person, leading to a dangerous leakage current.Set the hind legs of the autoclave to give the body an inclination of 2 towardsthe front; this ensures that water is completely drained out of the chamberthrough the opening on the bottom in front of the chamber. To check pour aglass of water into the bottom of the autoclave ensuring water flows out of thechamber.Ensure while placing the autoclave, to leave space around the machine, to givethe technician access to service the machine also making sure the autoclave ison a leveled and rigid surface.Ensure the following connections to the utilities sources and drain (refer to thedrawing REAR VIEW below).3.1 Connections

Connect the exhaust from pump to the drain by 5/16 tube. Connect the drain from the chamber, by a 1/4 tube.Note: All the connections listed above will be executed with flexiblehoses, which are supplied with the autoclave.Connect the power cord of the autoclave to a power outlet, 230V-16A.

REAR VIEW

64. TESTS4.1. Installation Tests

The service technician shall perform the followingpreliminary checks before operating the autoclave:

a. Leveling CheckCheck that the autoclave is leveled.

b. Leakage current test;Check the precise operation of the earth leakage relay.

c. Continuity CheckCheck the continuity of the grounding connection.

d. Safety CheckCheck the safety elements; safety valve and the door lockingmechanisms.

e. Programs CheckRun basic programs of the autoclave and check the operationsequences, the sterilization parameters etc.

f. Integrity CheckPerform a visual check to verify that there are no dents,scratches, broken gauges, etc.

After the above steps are performed, the autoclave is ready for operation.4.2 Periodical Tests

PERIOD TEST1 month Test the safety valve by operating it.6months

Remove the cover of the autoclave, tighten the screws of the heaters and theelectrical connections at the heaters, valves and connectors in the control box.Check the continuity of the grounding connections.Check the temperature and pressure calibration.Perform validation of the autoclave.Check the precise operation of the earth leakage relay.Check that the autoclave is levelled.Check the safety elements; safety valve, safety and cut-off thermostats doorlocking mechanisms.Run basic programs of the autoclave and check the operation sequences, thesterilization parameters etc.Check the water reservoir, piping, plastic parts and electric wires.check and tighten the piping joints to avoid leakage.check and tighten all screw connections in the control box, heaters andvalves and instrumentation.

Year

Observe the closing device for excessive wear5 years Observe the closing device for excessive wearSafety tests (pressure vessel, efficiency, electrical) shall be performed in accordancewith local rules or regulations, by an authorised inspector.

An authorized technician shall perform the 6-months and yearly tests!

75. WATER QUALITY5.1 Water for Generating Steam

The distilled or mineral free water supplied to the sterlizer shall beaccording to the table below:

Physical Characteristics and Maximum acceptable contaminantslevels in water or steam, for sterlizers

(In compliance with ISO 11134 and ISO 13683).Evaporate residue < 15 mg/lSilica < 2 mg/lIron < 0.2mg/lCadmium < 0.005 mg/lLead < 0.05 mg/lRest of heavy metals < 0.1 mg/lChloride < 3 mg/lPhosphate < 0.5 mg/lConductivity < 50 s/cmpH 6.5 to 8Appearance colourless, clean, without sedimentHardness < 0.1 mmol/l

Compliance with the above data should be tested in accordance withacknowledged analytical methods, by an authorized laboratory.

Attention:The use of water that do not comply with the table above may havesevere impact on the working life of the sterilizer and can invalidatethe manufacturers guarantee.

5.2 Reverse OsmosisA Reverse Osmosis system may be used to improve the quality of thewater used to generate steam in the autoclave chamber. The use ofmineral free will contribute to better performance and longer life of theautoclave.

86. DESCRIPTION OF THE CONTROL SYSTEM.(See CDR Control diagram).The control system is based on 3 electronic boards designed according to theautoclave requirements, the digital board DIG-T2 containing themicro-controller memories, buffers and digital ICs and the analog boardANL-T2 which performs the processing of signals coming from the sensorsand switches. The AC-T1 board consists of filters and AC drivers. DCvoltages 12V and 5V, supplied by a switching type power supply, powers the3 electronic boards.

The system is provided with communication interfaces RS 232 to PC and toparallel printer.

6.1 Digital Board DIG - T2 The digital board is connected to the keypad panel, to the parallel

printer and to the analog board ANL-T2. The board contains the micro-controller (U15) type 80C32 that

runs the software program of the system. On the board, are three types of memories:

1) EPROM memory (U17), part no. 27512 storing the programcodes.

2) RAM memory (U21) with a capacity of 32KB for thetemporary data during the running of the program.

3) EPROM memory (U22) that is a fixed serial memory with anelectrical writing and erasing.

This EPROM serves as a non-volatile memory, enabling thesystem to change follow-up tables during running of programcodes, and ensuring this data is not lost in case of power failure.

D S1

BZ1

97-05

C222

DIG T3

1

JP1

D1

RP1

U18

U8

C2

C3

C4

81 JP3

R4

U3

Q1

R2

U4

U19

U1

R1

20

19

R3

C16

Y1

C15R9

U14U11

37

1

SKT

U17

U16

U12

C17U21

C9

C7

C6

C5

U15

+

+

DIG-T2 BOARD

3433

C24C23

U22C25

37

19

20

1

PLUG

JP1

1

JP81

JP12

1

JP9

1

JP3

1

JP10

1

JP61JP7

P1

12

1JP5

JP2

1

JP4

9 The board contains an optimal Real Time Clock (U12), whichserves as a clock to the system, including a back-up battery, whichensures the clock, runs continuously even when the autoclave isnot powered.This component is optimal because it is related to the operation ofthe printer, which is also an optional item.

The board contains a watchdog, which detects any faulty situationin the running program code. It performs an automatic reset of themicro-controller and stops all the commands to avoid anuncontrolled activation of any of the heating elements or thevalves.

The board functions as an MMI (Man-Machine Interface). It isconnected to a LCD display of two rows with 16 characters oneach row and to the following light indicators: START (autoclave in process), FAIL (the process failed), WATER (no water in the reservoir), DOOR (the door is not closed).

A keyboard connected to the digital board, serves as a control panelcontaining the command and programming keys. The digital inputs and outputs are transferred to the system, as

follows: Through the digital board to the analog board by means of buffers

74HC377. RS232 interface is performed on the board by the U13 component,

the signal is transmitted to the communication connector locatedon the ANL-T2 board.

The printer is connected directly to this board, connector DS1enables to connect the DPU-20 printer manufactured by SEIKO.The printer receives the data and the supply voltage directly fromthis connector.

The layout of the DIG-T2 board components is provided below

C 1

D S

B Z 1

97-05

C 22

D IG

1

C 1

J P 1

D 1

R P

U 1

R PU 7U 8

C 1

C 2

C 3

C 4

81 J P 3

R 4

JP

C 1

U 3

Q 1

R 1

+

R 2

U 4

U 1

U 1

U 2

U 6

R 1

20

19R 8 R 7 R 6 R 5

R 3

U 1

C 16

Y 1

C 1R 9

U 5

U 1

U 1

U 1

37

1

S KT

U 1

U 1

U 1

C 1

R 1C 2

1

U 21

C 9

C 8

C 7

C 6

C 5

C 11

U 1

+

+

R 1C 2

C 1

C 1

3433

C 2C 2

U 2C 2

U 2

H 2

DIG- T2 BOARD

10

6.2 Analog Board ANL-T2The analog board contains the drivers of the valves, heaters and pump.It contains the sensors circuits connected to the control system, andserves as a junction to the autoclave connections.The input is 12VDC & 5VDC and the output is for all the signals to theautoclave. The power supply provides the DC voltages 12V and 5V through

the connector JP3 to the board and further to the DIG-T2 board. The computer is connected to the board through the connector P1,

by RS232 interface. The analog and digital inputs, from the temperature sensor,

electrode door switch, etc. are connected through connector JP6,the conversion circuits of the sensors are located on this board.

The pressure sensor MPX2200 that measures the chamber pressureis connected to the board through connector JP8, to the conversioncircuit of the sensor that is located on this board.

The analog to digital conversion circuit A/D (U5) and the analogmultiplexer (U6) for 8 analog inputs (temperature, pressure, andelectrode) are located on this board and transfer digital signal tothe DIG-T2 board.

All the drivers and power circuits to the solenoids (valves, doorlocking) are included on this board.

Layout diagram of the ANL-T2 is provided below.ANL - T2 BOARD

JP6

12 1 1

1

JP11

1

JP2

37

19

JP7

20

1

JP9

1

PLUG

JP1

JP5

JP3

ANL T1 BOARD

JP4

1

P1

JP10

1

1

JP12 JP8

1 1

11

6.3 AC - Board - AC-T1This board receives command signals from ANL-T2 board designatedto activate AC devices. It converts them to AC mode.The AC-T1 board provides AC filtering for the power supply to thecontrol system and protection from sharp current fluctuations.The AC-T1 board includes: AC drivers for the AC devices (pump, heaters, etc.) up to 6A. AC - input connector JP3. Filter circuit based on L1C5, the power transfer from the filter to

power supply via JP2. Spike protection - RV13. Three - 230/115 VAC output channels, triac control circuit.

Q1 - 16Amp - JP4/1,2Q2 - 8 Amp - JP7/1Q3 - 8 Amp - JP7/2

R8 C2

JP7

R7 C1

1JP1

R4

R1

R3

U1

ETYPEAC-97

R2

Q1

RV1

R12

R5

C3

Q3

R10U3

R11

R9

L1

RV3 RV2

JP4 JP3

1

JP5

C5

R6U2

1

JP6

JP2

Q2

(JP3,JP4,JP7 ON THE BOTTOM SIDE OF THE BOARD)

CAT TECH.

AC-T1 BOARD

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7. CALIBRATION OF TEMPERATURE AND PRESSURE7.1 Method of Calibration:

The calibration of temperature and pressure is performed digitally.The temperature and pressure measuring circuits are designed withcomponents having 1% accuracy.The temperature circuit is linear and has an output of 100mV2400mVfor a temperature range 20C150C.The pressure circuit is also linear and has an output of100mV2400mV for a pressure range 0400 kPa.The measuring at the A/D is limited for values higher than 2400mV orbelow 100mV.It is obvious that although the accuracy of the circuit components is1%, the sum deviation may reach 5%. Therefore calibration isnecessary.The system has a non-volatile memory in which the offset and gaindata of the sensors are stored.Calibration is performed by use of the keyboard (or the communicationport for computer use).Following is a description of the calibration of temperature andpressure using the keyboard. The calibration procedure is identical toall autoclave models.Definition of Gain and Offset:Every straight line can be defined by the equation ax+b=y. a is thedeviation from y=0 and b is the slope of the line. In our case a=Gainand b=Offset.The system is based on calculation of offset and gain of two points asin the following exampleIf the actual measured pressures are 100 kPa & 300 kPa and thedisplayed temperatures are 90 kPa & 310 kPa respectively, the inputVs pressure graph will be as follows.

The calibration method enables to input this data into the system inorder to perform automatic correction of OFFSET and GAIN.It is necessary to define the two points, which have to be input to thesystem, prior to performing calibration.

aX

Y

INPUT FROM SENSOR

PRES

URE

V1

310300

V2

10090

READ

ACTUAL

13

7.2 Temperature Calibration Procedure

Press the PROGRAM key. The system enables to set the systems date the time. This operation is skipped by pressing PROGRAM key

six times. CODE: will be displayed. Select Technician Code (011) by the UP/DN keys and press the

PROGRAM key.

Select CALIB CODE: 107 to calibrate the system by means of theUP/DN keys and press the PROGRAM key again untilTEMP CAL: will be displayed.

Set calibration code to TEMP CAL: 1 Press the PROGRAM key again and do not change the

code.

The following data will be displayed:UPPER ROW: A 60.0 R 60.0LOWER ROW: A 130.0 R130.0

Enter the actual data (A) and the displayed data (R) for two knownpoints as in the following example:The actual temperatures are 70C & 120C and the displayedtemperatures are 68C & 120C respectively. theProceed as follows: On the upper row, change A60.0 to A 70.0 by means of UP/DN

keys. Press the PROGRAM key.

The cursor on the upper row will move to R60.0, change to R68.0by means of UP/DN keys.

Press the PROGRAM key. The cursor moves to the lower row to A 130.0, change it to A

120.0 by means of UP/DN keys. Press the PROGRAM key.

The cursor on the lower row will move to R130.0, change toR123.0 by means of keys UP/DN, then press thePROGRAM key

This completes calibration procedure for temperature.

14

Remarks: When cursor is set under any figure, pressing the START/STOP

key stops calibration.

When the cursor is set under any figure, it enables to feed thisvalue to the reading of temperature by pressing thePARAMETERS key.

Example:If the cursor is set under R68.0 on the upper row and the actualtemperature of the autoclave is now 66.0C, by pressing thePARAMETERS key, the temperature reading will be corrected fromR68.0 to R 66.0.This calibration method enables the technician to change a certain pointwithout affecting a second point.Example:When the working temperatures are 134C and 121C but the actualtemperature are 132C and 121CThe measured temperature for 134C must be corrected withoutchanging the temperature at 121C,Considering the above example, the setting of data can be done asfollows:

A 121.0 R 121.0A 132.0 R 134.0

The system will calibrate the new offset and gain and retain them intothe non-erasable memory.As a result, while running a 134C program the correction isautomatically made, while at 121C no change is felt.

15

7.3 Pressure Calibration ProcedureTo perform the pressure calibration two points have to be definedallowing the calculation of new OFFSET and GAIN values. Press the PROGRAM key. Skip date and the time setting by pressing the PROGRAM

key six times. CODE: will be displayed. Select the Technician Code (011) by the UP/DN keys and press the

PROGRAM key. Select CALIB CODE: 107 to calibrate the system by means of the

UP/DN keys and press the PROGRAM key again until thesystem displays: PRES CAL:

Press the PROGRAM key.The following is displayed:

Point 1 Upper Row A 100 R 100Point 2 - Lower Row A 300 R 300

Open the door, do not alter A 100. Press the PROGRAM key, the cursor will move to R 100. Press the PARAMETERS key. The system performs

readingpressure and displays it instead of R100. E.g. R93 (i.e. the systemreads out 93kPa, when the door is open).

Press the PROGRAM key. The cursor moves to the lower row to A300.

If the system reads out 280kPa, do not change A300. Press thePROGRAM key to move to R300 and change it to theactualpressure value 280kPa by means of the keys UP/DN.

Press the PROGRAM key again.The system calculates the new values for offset and gain and storesthese values in the non-volatile memory.

This completes the calibration procedure for the pressure.

16

8. TEST POINTSThe test point list provides testing points on the junctions on board to assist inlocating the malfunction.

NU TP FUNCTION VALVETP1 GND TP2 +5V DC TP3 +12V DC TP4 OUT - HEATERS ON-5V; OFF-0VTP5 OUT-VAC. PUMP ON-5V; OFF-0VTP6 TP7 OUT-AIR-RELEASE VALVE ON-5V; OFF-0VTP8 OUT-EXH-VALVE ON-5V; OFF-0VTP9 OUT-WATER TO RES. ON-5V; OFF-0V

TP10 OUT-VACUUM VALVE ON-5V;OFF-0VTP11 OUTDOOR LOCK ON-5V; OFF-0VTP12 OUT-AIR RELEASE ON-5V; OFF-0VTP13 TP14 TP15 IN FLOAT HIGH. ON-5V; OFF-0VTP16 IN DOOR SWITCH ON-5V; OFF-0VTP17 IN THERMOSTAT ON-5V; OFF-0VTP 18 TP19 TP20 TP21 IN TEMPERATURE 134C 1.97VTP22 TP23 TP24 IN PRESSURE 2.0B 2.031VTP25 TP26 IN ELECTRODE HIGH 0V-YES; 2.5V NO

17

9. SOFTWARE PROGRAMMING PROCEDURES9.1 General

The software for the control system of the EPV autoclave is EpvEn320.The software contains a table of parameters of which part of themdefines the autoclave, and part defines the processes in the autoclave.This document describes parameters and their task in the software.

9.2 Changing ParametersAccess to the program is achieved by inserting the access code.Access code 1 This access code enables change of the sterilization

time, sterilization temperature and the drying time.Access code 11 changes that may be done by the supervisor.

Enables to change a few parametersAccess code 13 changes that may be done by the technician.

Enables to change all the parametersTo change the parameters listed below, proceed as follows:a. Select the cycle.b. Enable the operation by entering the ACCESS CODE (11).c. Set the parameter that has to be modified, by pressing successively

the PROGRAM key.d. Set the desired data by means of the UP/DN keys.e. Pressing the PROGRAM key enters the modified data into

memory, and moves to the next parameter.The pre-set parameters values will replace the last default values andbecome the updated default values.9.2.1 STER Temp Required sterilization temperature for the

processEntry Code 1Resolution 1CMinimum value for the change 105CMaximum value for the change 137C

Cycle 1 2 3 4 5 6 7 8Set value Value 105 121 134 121 134 121 134 0

9.2.2 STER Time Required sterilization time for the processEntry code 1Resolution 1 minuteMinimum value 3 minutesMaximum value 59 minutes

Cycle 1 2 3 4 5 6 7 8Set value Value 10 15 7 15 18 30 3.5 0

18

9.2.3. Heat Standby Operation of the heating elements inStandby ModeAccess Code 1Resolution 1Value 0 or 1 If Heat Standby = 0, the heating elements will not

operate in the Standby Mode. If Heat Standby = 1, the heating elements will operate in

the Standby mode, in a shoot mode of 1 second on,59 seconds off.

9.2.4 Dry Time Required drying time for the processEntry Code 1Resolution 1 minuteMinimum Value minutesMaximum Value 99 minutes

Cycle 1 2 3 4 5 6 7 8Set value Value 1 1 10 30 30 0 2 09.2.5 Water Time Time for entering water to the autoclave

This value defines the entry time of the water to the autoclave tolocate the electrode touching the water.This time will change from process to process and even fordifferent autoclaves.When the autoclave is vertical and the defined time is seconds, the water valve will not open at all.Entry Code 11Resolution 1 secondMinimum Value 1 secondMaximum Value 90 seconds

Cycle 1 2 3 4 5 6 7 8Set value Value 7 7 7 7 7 7 7 39.2.6 Heat T.O. - The maximum time allowed for the heating stage

(testing)After this time, if the system does not enter the sterilization stage,it will receive a Low Heat message and the process will abort.Entry Code 11Resolution 1minMinimum Value 20minMaximum Value 53 min

Cycle 1 2 3 4 5 6 7 8Set value Value 3000 3000 3000 3000 3000 3000 3000 0

19

9.2.7 End Temp - The ending temperature of the processIf at the end of the cycle the temperature is higher than thistemperature, the process will not end and the door will remainclosed.Entry Code 11Resolution 1CMinimum Value 40CMaximum value 137C

Cycle 1 2 3 4 5 6 7 8Set value Value 130 130 120 120 134 95 120 1349.2.8 PulsNum. No. of pulses in the prevacuum stage

Entry Code 11Resolution 1Minimum Value 1Maximum Value 5

Cycle 1 2 3 4 5 6 7 8Set value Value 1 2 2 2 2 2 2 19.2.9 VacDip1 Vacuum value in the first pulse

Defines the vacuum value in pulse no.1 of the prevacuum stage.Entry Code 11Resolution 1kpaMinimum Value 1kpaMaximum Value 90kpaSet value 15 kpa

9.2.10 VacDip2 Vacuum value in the remaining pulsesThis value defines the vacuum in the remaining pulses in theprevacuum stage (not just pulse no. 2)Entry Code 11Resolution 1kpaMinimum Value 1kpaMaximum Value 90kpaSet value 65 kpa

9.2.11 Vac Time 1 Vacuum Time in the First PulseThis value defines the time the system will continue to maintainvacuum after reaching Vac Dip1 for the first pulse.Entry Code 11Resolution 30secMinimum Value 1secMaximum Value 1800secSet value 120sec

20

9.2.12 Vac Time2 Vacuum Time in the remaining pulses.This value defines the time the system will continue to maintainvacuum after reaching Vac Dip2 for the remaining pulses.Entry Code 11Resolution 30secMinimum Value 1secMaximum Value 1800secSet value 240sec

9.2.13 Ex Mode The method for exhausting the steam at the end ofthe processEntry Code 11

Ex ModeFast Ex 1N.A. 2Slow Ex (Waste) 3Slow Ex (Liquids) 4

Cycle 1 2 3 4 5 6 7 8Set value Value 1 1 1 1 1 4 1 1

9.2.14 LimitP add The allowable addition to the maximum pressurein every processIf the maximum pressure is 225kpa, the system will not heatbeyond this pressure. If LimitP add will be , the maximumpressure will remain 225kpa. If LimitP add equals 10, themaximum pressure will be 235kpa.Entry Code 11Resolutio 1kpaMinimum Value kpaMaximum Value 30kpaSet value 0kpa

9.2.15 Calib Code Calibration CodeThis allows entry to the calibration mode.It must be set on 107 in order to allow the code to be entered.Entry Code 11Resolution 1Minimum Value Maximum Value 255Set value 100

21

9.2.16 Req Prs+This parameter defines the required addition to the sterilizationpressure in kpa.For example, for a sterilization temperature of 121C the requiredpressure is 204kpa. Since the system controls the sterilizationprocess according to pressure and temperature, if Req Prs+ equals, the system will maintain the pressure at 204kpa. If the valueis at 5kpa, the system will be maintained at 209kpa, and so on.Entry Code 11Resolution 1Minimum Value 0kpaMaximum Value 20kpa

Cycle 1 2 3 4 5 6 7 8Set value Value 9 6 6 6 6 6 6 6

9.2.17. Atmos. Pres - This parameter enables setting the pressureaccording to the ambient Atmospheric Pressure at the place inwhich the autoclave is operating.This value is derived from the altitude of the area. Theatmospheric pressure at Sea Level is 100kPa. For every 100mabove sea level, the atmospheric pressure drops 1kPa, and forevery 100m below sea level, the atmospheric pressure increases1kPa.Although the weather can affect the atmospheric pressure by1-2kPa, this will not affect the accuracy of the system.Entry Code 13Resolution 1kPaMinimum Value 55kPa (for +4500m)Maximum Value 108kPa (for 800m)*Set value 93kPa

* Although altitude 800m does not exist, this parameter allowsfor the lowest altitude, plus adjustment range due to weatherchanges.

9.2.18. Dry Mode rate of breaking vacuumThis parameter is used to set the rate of breaking the vacuum bycontrolling the air valve opening. 0 is closed valve and 5 iscompletely opened valve.Access Code 13Resolution 1Minimum Value 0Maximum Value 5

Cycle 1 2 3 4 5 6 7 8Set value Value 1 1 0 0 1` 0 1 1

22

9.2.19. Puls Press pulse pressure during pre-vacuum stage.This parameter is used to set the maximum pressure in eachpulse of the pre-vacuum stage.Access Code 13Resolution 10Minimum Value 110Maximum Value 200Set value 140kPa

9.2.20. Heat Step heating rate during sterilizationThis parameter is used to set the sterilization heating-rate. Theheating rate is constant until the pressure in the chamber reachesa pressure of 30 kPa below the required sterilization pressure.From this point on heating is performed in pulses. Each pulselasts 45 seconds and increases the pressure in the chamber byX kPa. Increasing the value of X will increase thechambers heating rate and decreasing the value of X willdecrease the heating rate.Access Code 13Resolution 1Minimum Value 1Maximum Value 10Set value 5

9.2.21. Auto. Num Autoclave serial numberThis parameter is used to set the serial number in the facility.This number enables the operator to identify each autoclave.This number is printed on the autoclaves printout.Access Code 13Resolution 1Minimum Value 1Maximum Value 99

23

9.3 Resetting the AutoclaveWhenever certain data, stored in the back-up memory, must be erasedthe system must be reset, in order to restore the system to normaloperation or for situations that follow: When the machine is operated for the first time or after a long

interruption, and disorders appear in the operations sequence. When operation was stopped in the middle of the cycle, as a result

of a power failure or manual stop and the cycle has not beencompleted.

To reset the system; proceed as follows: Turn the main power switch OFF. Turn the main power switch ON, while pressing the SEL. CYCLE

key, until the program parameters are displayed.After resetting the autoclave, the autoclave is in stand-by mode

9.4 Test ModeTurn on the main power switch, while pressing the UP keycontinuously, to enter the Test mode.The output test will start (valves, heater, pump), each output will beactivated for one second and its name will be displayed. To switchfrom one output to another, press each time the UP key.Keep pressing the UP key, the inputs test is performed, pressing eachtime the UP key the next input is selected.The same way the temperature and pressure values are displayed.

24

10. REPLACEMENT PROCEDURES 10.1 Dismantling the Outer Covers of the Autoclave

Caution!Before starting, disconnect the instrument from the power sourceand ensure that there is no pressure in the autoclave.Allow the autoclave to cool before removing outer covers.1. Remove the screws holding the rear cover (1).2. Remove the screws holding the cover to the base (2).3. Dismantle the air filter from the service opening cover (3).4. Remove the screws holding the filter.5. Remove the grounding wires from the cover.6. Pull the cover upwards.

3

21

25

10.2 Replacing the Safety ValveCaution!Before starting, be sure that the electric cord is disconnected and thatthere is no pressure in the autoclave.1. Remove the autoclave cover (see para. 10.1 Dismantling the

Outer Covers of the Autoclave).2. Remove the water reservoir cover.3. Unscrew the safety valve and remove it from the safety valve base.4. Replace the valve with a new safety valve (install an original

only!). use Teflon tape for sealing the thread.5. Perform one cycle and verify that the valve operates correctly.

Safety valve

Safety valve base

26

10.3 Replacing the electronics board (control panel)Caution!Make sure that the power cord is disconnected!If the electronic box was damaged by any liquid that entered the box,do not attempt to replace it. In this case only the factory techniciansmay repair the autoclave.Allow the autoclave to cool before removing outer covers.1. Remove the autoclave cover (see para. 10.1 Dismantling the

Outer Covers of the Autoclave).2. Remove the screws that connected the plastic panel with the digital

electronic board to the autoclave (2).3. Disconnect the flat cable from DIG-T1 to ANL-T1 (4).4. Disconnect the flat cable of communicator from P1-ANL-T1 (6).5. Disconnect the grounding cable shoe (green cable) (5).6. On autoclave model 2540 disconnect the main switch (7).7. Remove the plastic panel, including the electronics board (control

panel), from the autoclave.8. If replacement of the control panel is required, unscrew four

fastening screws located on the rear of the panel. Remove thecontrol panel from the plastic panel and replace it with a new one.

10.4 Replacing the Electronics BoxCaution!Make sure that the power cord is disconnected!If the electronic box was damaged by any liquid that entered the box,do not attempt to replace it. In this case only the factory techniciansmay repair the autoclave.Allow the autoclave to cool before removing outer covers.1. Remove the autoclave cover (see para. 10.1 Dismantling the

Outer Covers of the Autoclave).2. Remove two screws from the bottom side and from the top (1, 3).3. Disconnect all the electric system connectors from the electronics

base (including the MPX connectors).4. Remove electronics box and replace with new one.5. Re-assemble the instrument. Verify that the grounding connections

are connected correctly.6. Test any cycle and verify that the autoclave operates as required.

27

Electronic box

632

4

5

71 1

Electronic boxControl panel

72

28

10.5 Replacing Heating elementsCaution:Before starting, be sure that the electric cord is disconnected from thepower source and that there is no pressure in the autoclave chamber.1. Remove the autoclave cover (see para. 10.1 Dismantling the

Outer Covers of the Autoclave).2. Remove the insulation.3. Remove the heating element tightening bolts (1).4. Release the two terminal wires from the heating element.5. Replace the heating element (s)

5.1 Verify that the upper thermo-couple tube is connected to theupper (cut-off) thermostat and that the lower thermo-coupletube is connected to the lower (safety) thermostat.

6. Ensure that the heating element strap is well tightened to theautoclave body, ensuring proper heat dissipation from the heatingelement.

7. Re-assemble the autoclave insulation and cover.8. After replacing one or more heating elements run a cycle and

verify that it operates as required.9. Retighten the fixing screws of the heaters. This operation is done

with the autoclave hot, but with the power cord disconnected fromthe power outlet and autoclave door open, to ensure that thechamber is not pressurized.

10. Test the autoclave by performing a full cycle.

29

10.6 Replacing the Temperature Safety ThermostatThe autoclave is supplied with a temperature thermostat, whichprotects the heaters and autoclave against overheating, during the drycycle.This device reconnects automatically when the chamber cools down.CautionBefore starting, disconnect the instrument from the power source andensure that there is no pressure in the autoclave.Allow the autoclave to cool before removing outer covers.The temperature safety thermostat is located on the lower side of thefuse and socket panel on the rear of the autoclave.1. Remove the rear cover.2. Loosen the heating band.3. Unscrew the thermostat and replace it with a new one.

30

10.7 Replacing the Cut-Off ThermostatThis thermostat cuts out power to the autoclave, in the event that allother safety means do not function.For example: If the safety thermostat is defective and the temperaturecontinues to rise, then the cut-off thermostat cuts out the power to theautoclave. In order to restart the operation press the Reset Button. If theautoclave is operated according to the instructions, and the thermostatagain cuts out, the Cut-Off Thermostat must be replaced.CautionBefore starting, disconnect the instrument from the power source andensure that there is no pressure in the autoclave.Allow the autoclave to cool before removing outer covers.The Cut-Off Thermostat is located on the upper side of the fuse andsocket panel on the rear of the autoclave.1. Remove the rear cover.2. Loosen the heating band.3. Unscrew the thermostat and replace it with a new one.

31

10.8 Cleaning and Replacing the Water Level ElectrodesThe water level electrode is located at the rear bottom area of thechamber.

10.8.1 ReplacingCautionBefore starting, disconnect the instrument from the powersource and ensure that there is no pressure in theautoclave.Allow the autoclave to cool before removing outer covers.

1. Remove the rear cover.2. Disconnect the wire from the electrode connection.3. Open the nuts that tighten the electrodes.4. Insert a new electrode and tighten the fixing bolt to

avoid leakage.5. Reconnect the wire to the electrodes.6. Test the unit.

10.8.2 Cleaning1. Pull out the trays and tray holder.2. Clean the electrode tip.3. Test the unit.

32

10.9 Replacing the Drain ValveCaution!Before starting, disconnect the instrument from the power source andensure that there is no pressure in the autoclave.Allow the autoclave to cool before removing outer covers.1. Remove the autoclave cover (see para. 10.1 Dismantling the

Outer Covers of the Autoclave).2. Disconnect the drainpipe from the valve, using a 9/16 wrench.3. Remove the nut (3) and the ring for drain valve (2).3. Remove the drain valve (1) from the panel.4. Install a new valve according to the drawing below.5. Verify that there is no leakage.

CMT240-0020 CMT240-0003 VLV170-0066

Item Cat No.1 SRV000-02242 SRV000-0232

33

10.10 Replacing the Pressure GaugeCaution!Before starting, disconnect the instrument from the power sourceand ensure that there is no pressure in the autoclave.1. Remove the door cover.2. Remove the pressure gauge from the door.3. Install the new pressure gauge using Teflon tape for sealing the

thread.4. Operate the autoclave and verify that there is no leakage.5. Install the door cover.

34

10.11 Replacing the Locking DeviceCaution!Before starting, disconnect the instrument from the power sourceand ensure that there is no pressure in the autoclave.1. Remove the door cover.2. Disconnect the wires from the connector.3. Unscrew the tightening nut (cat. No. CMT201-0003).4. Remove the pin, the spring and the solenoid.5. Replace the damaged items and reinstall according to drawing

below.6. Operate the autoclave and verify that the pin is retracted when the

cycle reaches stand-by stage.

35

10.12 Replacing the PrinterCaution!Before starting, disconnect the instrument from the power source.

1. Remove the autoclave cover (see para. 10.1 Dismantling theAutoclaves Outer Covers).

3. Disconnect the contactor of the flat cable (1) connecting theelectronic box to the printer.

4. Unscrew the two screws (2) fastening the printer to the panel.5. Remove the printer and install the new one.6. Verify connection of power by performing a self-test.7. Run a cycle and verify that the printer operates correctly.

1

2

36

10.13 Replacing the Door SwitchCaution!Before starting, disconnect the instrument from the power sourceand ensure that there is no pressure in the autoclave.Allow the autoclave to cool before removing outer covers.

1. Remove the autoclave cover (see para. 10.1 Dismantling theOuter Covers of the Autoclave).

2. Disconnect the wires (1), (2) from the door switch (3).3. Remove the microswitch and replace it with a new one.4. Reconnect the wires the microswitch. Verify that the wire is placed

on the isolating cover (4) and does not touch the chamber.5. Reassemble the door cover.6. Test the connection with an ohmmeter. In open position the

ohmmeter shows disconnection and in close position theohmmeter shows connection.

3

2

1

4

37

10.14 Replacing the circuit breakerCaution!Before starting, disconnect the instrument from the power source.

1. Remove the autoclave cover (see para. 10.1 Dismantling theOuter Covers of the Autoclave).

2. Disconnect the wires from the circuit breaker.3. Remove the four screws connecting the circuit breaker to the panel

(1).4. Replace the circuit breaker with a new one.5. Reconnect the electrical wires.6. Reassemble the cover.7. Turn on the autoclave and verify it operates correctly.8. Move the circuit breakers lever to the tripped position and

verify that the autoclave turns off.

38

10.15 Vacuum PumpFor generation of vacuum in the prevacuum and dry stages, thementioned models are equipped with a diaphragm vacuum pumphaving the following technical specifications:To improve the operation of the vacuum pump a condenser has beenfitted in the vacuum circuit, as described in detail in the next paragraph.In order to reduce the noise produced by the operation of the pump, asilencer delivered with the autoclave, can be mounted at the exhaustoutlet of the pump and connected to the drain by silicone flexibletubing.

Caution:Make sure the silencer is never submerged in water andis leveled at least equal or below the exhaust outlet fromthe pump.

39

10.16 The Water Reservoir10.16.1 description

The water reservoir is a one-compartment reservoir thatsupplies water to the chamber to generate steam. Thereservoir is equipped with two outlets at the bottom. Oneoutlet is connected to the chamber to supply water togenerate steam. The second outlet is connected to the drainvale to enable draining the reservoir. The reservoir must besupplied with water conforming to requirements specified inparagraph 5.1 (Water for Generating Steam).A float switch is mounted on the wall of the reservoir. Thefloat stops the cycle when the water level drops below thefloat, to avoid working without water.Flexible tubing connects the aeration inlet of the vacuumpump to the upper side of the pump reservoir.

10.16.2 ReplacementIt is possible to replace damaged items on the reservoir or toreplace the complete assembled reservoir. Since the items onthe reservoir tend to deteriorate after a long period, it isrecommended to replace the complete assembly.Caution!Before starting, disconnect the instrument from thepower source.1. Drain the reservoir2. Remove the autoclave cover (see para. 10.1

Dismantling the Autoclaves Outer Covers).3. Disconnect the wires from the reservoir.4. Disconnect the piping from the reservoir.5. Remove the reservoir from the autoclave.6. If required, replace the damaged item on the reservoir7. Reassemble the repaired reservoir or a new reservoir,

as appropriate.8. Reconnect wiring and piping.9. Reassemble the cover.10. Turn on the autoclave and verify that there are no leaks

and that it operates correctly

40

Water reservoir

41

10.17 Replacement of the Door CoverCaution:Before starting, be sure that the electric cord is disconnected from thepower source and that there is no pressure in the autoclave chamber.1. Unscrew the four screws attaching the door cover and remove the

door cover. Since the screw pressing the door microswitchincludes two washers and a spring, be aware not to lose them.

2. Reassemble the new cover.3. Insert screw (1) until dimension A is approximately 15 mm.4. Perform final adjustment of the screw as follows:

4.1 While the autoclave is disconnected from electricity turn onthe circuit breaker.

4.2 Connect the electrical plug to a multi-meter.4.3 Press the microswitch and verify that the microswitch

functions as required.4.4 Close the door and verify that the microswitch operates.4.5 If the microswitch does not operate unscrew the screw one

turn counter-clockwise and check per para. 4.4. Repeat untilmicroswitch operates.

4.6 Connect the autoclave to electricity.4.7 Close the door until the microswitch indicates that the door is

closed. Operate the autoclave and verify that there is no steamor pressure leak.

4.8 If there is a steam leak stop the autoclaves operation, reducesteam pressure, open the door and turn the screw one turnclockwise and check per para. 4.7. Repeat until leakage

ceases.3

122

A

4

5

42

42

11. TROUBLESHOOTING11.1 Displayed Messages and Reference to Trouble Shooting

Message Refer to trouble shooting sectionPara.11.2

Para.11.3.1

Para.11.3.2

Para.11.3.3

Para.11.3.4

Para.11.4

Para.11.5

Low Temp. 1 15, 20

Low Heat 1 4, 5 12, 16 3

High Temp. 1 1 1 6, 7, 16,19, 21 1

Low Pres. 16, 7, 16,19, 20,21

3

High Pres. 1 11,16,18, 19 1

Add Water 7 3, 25

Door Unlock 2 24

Low Water 4 31, 6, 7,22, 25,26, 27

1, 2

43

Corr

ectio

ns1.1

Repla

ce da

mage

d cord

or re

pair f

aulty

conn

ection

s.1.2

Reset

cut-o

ff.

1.3Re

turn t

he ci

rcuit b

reake

r leve

r to th

eO

N po

sition

after

fixing

the c

ause

forthe

short

circu

it.1.4

Repla

ce the

blow

n fuse

after

fixing

the

cause

for th

e sho

rt circ

uit.

Fa

sten c

ontac

ts.

Re

store

powe

r sou

rce.

Possi

ble ca

use c

heck

-up a

nd te

sts1.1

Check

the p

ower

cord

and t

heco

nnect

ions

at the

autoc

lave i

nput.

1.2Ch

eck th

e cut-

out th

ermost

at.If

opera

tion c

ontin

ues a

fter r

esettin

g the

cut-o

ut. fin

d out

what

caused

the

therm

ostat

to sw

itch-o

ff.1.3

Check

the c

ircuit

break

er. If

it trip

ped,

there

is a s

hort-

circu

it.1.4

Check

the f

use of

the p

ower

supply

. Ifthe

fuse

is blo

wn, c

heck

if on

e of th

eva

lve co

ils or

one o

f the e

lectro

nic bo

ards

causes

a sho

rt circ

uit.

1.5Ch

eck th

e AC

volta

ges.

Th

e inp

ut sup

plies

volta

ge at

the

contr

ol sys

tem - S

ee Ele

ctrica

l Wirin

gDi

agram

.

Switc

h off

the po

wer o

f the u

nit.

Se

t the m

ultite

ster o

n the

AC

volta

ge

measu

ring r

ange

.

Conn

ect th

e neg

ative

prob

e at p

in 3 t

oAC

-INPU

T con

necto

r and

the p

ositiv

e pro

be to

pin 1

or 2

on A

C-T1

board

.

Turn

on th

e pow

er. Th

e ind

icatio

n of

the in

strum

ent m

ust be

the s

ame a

s the

powe

r netw

ork vo

ltage

. if no

t:

Main

powe

r swi

tch\R

ocke

r swi

tch

conta

cts m

ay be

loose

.

Electr

ical p

ower

source

may

be

faulty

.

11.

TROU

BLES

HOOT

ING

11.2

P

re-pro

cess m

alfun

ction

Symp

tom1.

No re

spon

se wh

en th

esy

stem

is tur

ned o

n

44

Corr

ectio

ns

Fix

conn

ection

s.

Re

place

faulty

cable

s.

Re

place

faulty

conn

ector.

Re

place

faulty

conn

ector.

Re

place

faulty

powe

r swi

tch

Possi

ble ca

use c

heck

-up a

nd te

sts

It is p

ossibl

e tha

t the d

ual p

ower

suppli

es ou

tputs

12V,

but th

e 5V

circu

it is f

aulty

. To i

denti

fy the

fault

y ite

m pro

ceed a

s foll

ows:

Ch

eck th

e con

necti

on be

tween

the

two e

lectro

nic bo

ards A

NL-T

1 and

DI

G-T2

.

Check

the c

able,

whic

h tran

sfers

the

volta

ge fr

om th

e AC-

T1/JP

2 co

nnect

or to

the po

wer s

upply

.

Check

the i

nput

volta

ge of

the e

lectric

box,

at the

AC-

INPU

T con

necto

r, on

the A

C-T1

board

/JP3.

Ch

eck if

there

is no

short

-circu

it at th

eAC

-OUT

PUT c

onne

ctor o

n the

AC

-T1 b

oard

(JP2).

Ch

eck if

there

is no

short

-circu

it at th

einp

ut co

nnect

or (JP

3) or

at the

outpu

t co

nnect

or (JP

5) on

the A

NL-T

1 bo

ard.

1.6Ch

eck th

e DC

volta

ges s

upply

to th

esys

tem.

Ch

eck m

ain po

wer s

witch

.1.6

.1Ch

eck th

e grou

nding

Plu

g con

necto

r 26 p

in FL

AT of

the

test b

oard

into c

onne

ctor J

P5 m

ounte

don

board

ANL

-T1.

Co

nnect

the n

egati

ve pr

obe o

f the

multit

ester

to TP

1 on t

he te

st bo

ard.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.2

Pre-

proces

s malf

uncti

on (c

ont.)

Symp

tom1.

(cont.

)

45

Corr

ectio

ns

Tig

hten l

oose

screw

s.

Reco

nnect

grou

nding

cable

.

Re

pair o

r rep

lace t

he fa

ulty i

tem.

Re

place

faulty

powe

r sup

ply.

Possi

ble ca

use c

heck

-up a

nd te

sts

Check

with

the p

ositiv

e prob

e of

the m

ultite

ster th

e volt

age a

t diff

erent

groun

ding p

oints

of the

autoc

lave,

on

the A

NL-T

1 and

DIG

-T2 b

oards

, on

the en

closur

e of th

e elec

tric bo

x and

the

main

grou

nding

screw

of th

e ma

chine

.Th

e volt

age d

iffere

nces

must

be le

ss tha

n 5mV

.Hi

gher

volta

ge m

ay in

dicate

that

ANL-

T1 bo

ard fa

stenin

g scre

ws ar

e loo

se or

that th

e pow

er sup

ply ca

ble is

loose.

1.6.2

Check

the 1

2VDC

volta

ge.

Co

nnect

the n

egati

ve pr

obe o

f the

multit

ester

to TP

1 (GN

D).

Co

nnect

the p

ositiv

e prob

e of th

e mu

ltitest

er to

TP3.

The i

ndica

tion o

f the

instr

umen

t must

be 10

.8-12

.5V.

If

indica

tion i

s not

as spe

cified

, dis

conn

ect th

e outp

ut co

nnect

or of

thepo

wer s

upply

. If th

e righ

t valu

e is

achiev

ed th

er is

a sho

rt circ

uit.

Ide

ntify

and l

ocate

the s

hort c

ircuit

.If

instru

ment

indica

tion i

s belo

w or

abov

e spe

cified

rang

e the

powe

r sup

ply is

fault

y.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.2

Pre-

proces

s malf

uncti

on (c

ont.)

Symp

tom1.

(cont.

)

46

Corr

ectio

ns

1.6.4

calibr

ate vo

ltage

to 5.

2V by

adjus

ting

the in

terna

l pote

ntiom

eter. T

his op

eratio

nmu

st be

done

with

great

care

to av

oidele

ctrica

l sho

ck.

Re

place

faulty

coil a

nd re

set fu

se.

Possi

ble ca

use c

heck

-up a

nd te

sts1.6

.3If

neith

er 12

V no

r 5V

volta

ges a

reou

tput:

C

heck

the v

oltag

e tran

sfer to

the

powe

r sup

ply th

rough

the c

onne

ctor

JP2 o

n the

AC

- T1 b

oard.

1.6.4

Check

the 5

VDC

volta

ge.

Co

nnect

the n

egati

ve pr

obe o

f the

multit

ester

to TP

1 (GN

D).

Co

nnect

the p

ositiv

e prob

e of th

e mu

ltitest

er to

TP2.

The i

ndica

tion o

f the

instr

umen

t must

be 4.

95.3

V.

Check

if the

fuse

of the

powe

r sup

ply

is blo

wn. It

is po

ssible

that

one o

f the

valve

coils

or th

e elec

tronic

board

cau

se a s

hort c

ircuit

.

Disco

nnect

the p

ower

from

the

AC-T

1 boa

rd/co

nnect

or JP

2, an

d sw

itch o

n the

unit.

If in

no-lo

ad

cond

ition t

he po

wer s

upply

deliv

ers

12V

and 5

V vo

ltage

s, it c

an pr

obab

ly be

that

there

is a p

roblem

on on

e of

the bo

ards, o

ne of

the i

nputs

or

outpu

ts.

Conn

ect th

e AV-

T1/JP

2 con

necto

r ba

ck to

the b

oard

and d

iscon

nect

the

conn

ectors

JP6 (

inputs

), JP5

(ou

tputs)

, pres

sure s

ensor

.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.2

Pre-

proces

s malf

uncti

on (c

ont.)

Symp

tom1.

(cont.

)

47

Corr

ectio

ns

Re

place

faulty

unit.

Re

place

faulty

board

.

2.1Re

conn

ect ca

ble.

2.2Re

place

the D

IG-T

2 boa

rd

3.1Re

place

DIG-

T2 bo

ard.

4.1Re

conn

ect ca

ble.

4.1Re

place

the ke

yboa

rd.4.2

Repla

ce the

DIG

-T2 b

oard.

5.1Ca

librat

e sen

sor an

d che

ck ca

librat

ionacc

uracy

durin

g the

opera

tion.

5.2Th

e sen

sor is

fault

y. Re

place

sensor

.

Possi

ble ca

use c

heck

-up a

nd te

sts

Reap

ply th

e pow

er fro

m the

ANL

-T1

board

.

If the

volta

ges 1

2V an

d 5V

reapp

ear,

the pr

oblem

is on

e of th

e exte

rnal

eleme

nts co

nnect

ed to

the s

ystem

(va

lves, s

ensor

s, etc.

).

If vo

ltage

s 12V

and 5

V do

not a

ppear

,on

e of th

e boa

rds is

dama

ged.

Disco

nnect

board

DIG

-T2 a

nd ch

eck

board

ANL

-T1.

2.1Co

mmun

icatio

n cab

le is

disco

nnect

ed.

2.2If

the ot

her f

uncti

ons a

re OK

, the d

isplay

is pro

bably

dama

ged.

3.1DI

G-T2

board

is fa

ulty.

4,1Di

gital

cable

is dis

conn

ected

.4.1

Keyb

oard

is fau

lty.

4.2DI

G-T2

board

is fa

ulty.

5.1Ch

eck if

the di

splay

ed va

lue is

near

theatm

osphe

ric pr

essure

.5.2

If the

displ

ayed

value

is si

gnific

antly

differ

ent fr

om th

e atm

osphe

ric pr

essure

proba

bly th

at the

re is

a prob

lem w

ith th

epre

ssure

measu

ring.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.2

Pre-

proces

s malf

uncti

on (c

ont.)

Symp

tom1.

(cont.

)

2.Sy

stem

is on

and d

isplay

isno

t lit.

3.Sy

stem

on an

d erro

neou

sor

fragm

ented

digit

s.4.

No re

spon

se fro

m on

e of

the ke

ys.

5.Th

e disp

layed

read

out fo

rthe

atmo

sphe

ric pr

essure

,wh

en th

e doo

r of th

ech

ambe

r is op

en, d

oes n

otco

nform

to th

e actu

alab

solut

e pres

sure.

48

Corr

ectio

ns6.1

See s

ympto

m s 2

3 & 24

in pa

ra. 11

.4.

7.1Se

e sym

ptom

s 25 i

n para

. 11.4

.

Possi

ble ca

use c

heck

-up a

nd te

sts6.1

Incorr

ect re

ading

of th

e doo

r swi

tchpo

sition

7.1Inc

orrect

read

ing of

the r

eservo

ir floa

tsw

itch p

ositio

n.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.2

Pre-p

rocess

malf

uncti

on (c

ont.)

Symp

tom6.

Press

ing th

e STA

RT ke

ydo

es no

t star

t the p

rocess

,de

spite

the d

oor is

clos

ed.

7.Pr

essing

the S

TART

key

does

not s

tart th

e proc

essan

d the

error

mess

age

ADD

WAT

ER is

disp

layed

desp

ite th

e wate

r rese

rvoir

being

full.

49

Corr

ectio

ns1.1

If req

uired

chan

ge W

ater T

ime

param

eter.

2.1Se

e sym

ptoms

29 in

para.

11.4.

2.2Inc

rease

the Pr

ogram

inter

val. A

dd 1-

2sec

onds

to the

wate

r inlet

.3.1

Clean

the p

iping

or th

e valv

e.

4.1Cl

ean th

e pipi

ng..

4.2Re

place

faulty

valve

.

Possi

ble ca

use c

heck

-up a

nd te

sts1.

After

vacu

um st

age i

s com

pleted

messa

ge W

ater

will a

ppear

on th

edis

play a

nd w

ater e

nters

the ch

ambe

run

til it R

eache

s the

elect

rode.

In thi

ssta

ge a

coun

ter is

displ

ayed

in th

ebo

ttom

row of

the d

isplay

. Afte

rnu

llifica

tion o

f the c

ounte

r stop

the c

ycle

manu

ally.

Wait

until

proces

s can

celing

have

been

comp

leted

and o

pen t

he do

or.Ve

rify t

hat th

e wate

r qua

ntity

is 60

0 ml

(20 oz

s).If

the au

toclav

e doe

s not

opera

te as

descr

ibed a

bove

, proc

eed as

follo

ws:

2.1Inc

orrect

read

ing of

the w

ater s

ensin

gele

ctrod

e,2.2

Progra

mmed

inter

val a

fter th

e elec

trode

senses

wate

r surf

ace is

very

short.

3.1Pro

bably

wate

r pipi

ng or

valve

isclo

gged

. This

lead

s to a

long

fillin

g tim

e,

4.1Pip

ing is

bloc

ked

4.2Th

e wate

r inlet

valve

is fa

ulty.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.3

In Pr

ocess

Malf

uncti

on

11.3

.1 W

ater I

nlet S

tage

Symp

tom1.

If the

re is

any m

alfun

ction

relate

d to i

nlet w

ater

quan

tity (L

ow W

ater, H

ighTe

mp, L

ow Pr

ess or

Low

Heat)

, che

ck th

e auto

matic

water

fillin

g.

2.Th

e wate

r inlet

phase

issh

ort an

d the

wate

r leve

l inthe

cham

ber is

low.

3.Th

e wate

r inlet

time i

spro

longe

d and

the q

uanti

tyof

water

is no

t acc

eptab

le.4.

The p

rocess

fails

on Lo

wW

ater in

the w

ater in

letsta

ge, w

ater d

oes n

ot en

terthe

cham

ber.

50

Corr

ectio

ns

4.1Re

locate

the c

oolin

g coil

and r

elease

float

or cle

an th

e floa

t.

4.2Re

place

float.

4.3Fix

disco

nnec

tion.

4.4Re

place

plun

ger o

r com

plete

solen

oid.

4.5Cl

ean w

ater in

let pi

pe4.6

See s

ympto

m s 3

& 6

in pa

ra. 11

.4.

Repla

ce w

ater in

let va

lve.

4.7Re

place

plun

ger o

r com

plete

solen

oid.

Possi

ble ca

use c

heck

-up a

nd te

stsIf

no w

ater e

nters

the ch

ambe

r, the

re is

no w

ater

in the

reser

voir a

nd di

splay

indic

ates t

hat th

ereis

water

:4.1

Float

is stu

ck. C

heck

if the

cooli

ng co

ilha

s mov

ed an

d prev

ents

the flo

at fro

mmo

ving o

r if flo

at is

stuck

due t

o dirt.

4.2Flo

at is

faulty

.Th

ere is

wate

r in th

e rese

rvoir a

nd th

e disp

layind

icates

that

there

is wa

ter. D

espite

this,

wate

rdo

es no

t ente

r the c

hamb

er.4.3

No vo

ltage

at so

lenoid

inpu

t.Ve

rify c

omma

nd at

Test

Point

TP9 f

romele

ctron

ic bo

x.4.4

solen

oid fa

ulty.

4.5W

ater in

let pi

pe is

clog

ged.

4.6W

ater in

let va

lve (2

1) is

faulty

.

4.7Va

lves

solen

oid is

fault

y.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.3

In Pr

ocess

Malf

uncti

on (c

ont.)

1

1.3.1

Wate

r Inle

t Stag

e (co

nt.)

Symp

tom5.

Wate

r doe

s not

enter

the

cham

ber d

uring

FIL

L WAT

ER

stage

.

51

Corr

ectio

ns1.1

See s

ympto

ms 14

, 16 a

nd 16

in pa

ra.11

.3.2.

2.1Cl

ose th

e doo

r more

tightl

y or s

et the

door

switc

h more

stead

ily.

3.1If

amou

nt of

water

is no

t corr

ect, c

lean

the el

ectrod

e and

set th

e wate

r leve

l

3.2Se

e sym

ptom

21 in

para.

11.4.

3.3Th

e the

rmost

at mu

st be

set a

t a hi

gher

switc

hing p

oint a

nd th

e tim

e afte

r the

electr

ode t

ouch

es the

wate

r be p

rolon

ged.

3.4Cl

ean or

repla

ce wa

ter in

let va

lve an

dex

haust

valve

.

Possi

ble ca

use c

heck

-up a

nd te

sts1.1

The p

roblem

is th

e inc

orrect

read

ing of

the te

mpera

ture s

ensor

.

2.1Th

e pres

sure i

n the

cham

ber r

ises d

uring

the he

ating

stag

e and

is pr

essing

on th

edo

or. If

the d

oor s

witch

is lig

htly p

ressed

it cou

ld be

turne

d off.

3.1

The p

rocess

fails

if the

elect

rode i

s abo

vethe

wate

r surf

ace an

d the

safet

ythe

rmost

at sw

itche

s off.

Check

if the

amou

nt of

water

in th

ech

ambe

r is ov

er 35

0cc.

3.2If

the w

ater q

uanti

ty rem

ains i

nsuffi

cient,

the pr

oblem

is a

wron

g elec

trode

sign

al.3.3

Proces

s fail

s desp

ite co

rrect

quan

tity of

water

.

3.4Pre

sence

of dir

t insid

e the

wate

r inlet

valve

may

cause

slow

down

of th

e flow

.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.3

In Pr

ocess

Malf

uncti

on (c

ont.)

11

.3.2

Hea

ting S

tage

Symp

tom1.

Proc

ess fa

ils w

hile

initia

ting t

he he

ating

stag

e.me

ssage

HIG

H TE

MP i

sdis

playe

d.2.

Mess

age D

OOR

UNLO

CKis

displa

yed d

uring

the

heati

ng st

age,

altho

ugh t

hedo

or is

closed

.3.

LOW

WAT

ER m

essag

e is

displa

yed d

uring

the

heati

ng st

age a

nd pr

ocess

fails.

52

Corr

ectio

ns

4.1.1

Clean

or re

place

electr

ode.

4.1.2

Leve

l auto

clave

.

4.2Se

e sym

ptoms

12 in

para.

11.4.

5.1Re

place

gaske

t and

close

well

.5.2

Repla

ce do

or ga

sket.

5.3Ch

eck an

d tigh

ten pi

ping c

onne

ction

s.

Possi

ble ca

use c

heck

-up a

nd te

sts4.1

The h

eating

time i

s very

long

and t

hehe

ating

rate

is no

rmal.

4.1.1

Exces

s qua

ntity

of wa

ter in

the

cham

ber d

ue to

dirty

elect

rode,

loose

electr

ode c

onne

ction

s or

faulty

elect

rode.

4.1.2

Exces

s qua

ntity

of wa

ter in

the

cham

ber d

ue to

un-le

velle

dau

toclav

e.4.2

Heati

ng el

emen

ts da

mage

d.

5.1Le

akag

e at th

e wate

r filte

r.5.2

Steam

leak

age f

rom th

e doo

r.5.3

Piping

leak

age.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.3

In Pr

ocess

Malf

uncti

on (c

ont.)

1

1.3.2

Hea

ting S

tage (

cont.

)

Symp

tom4.

Mess

age L

OW H

EAT i

sdis

playe

d duri

ng th

ehe

ating

stag

e.

5.LO

W V

ACUU

M m

essag

eis

displa

yed d

uring

the

heati

ng st

age a

nd th

epro

cess

fails,

or du

ring t

heva

cuum

test.

.

53

Corr

ectio

ns5.1

Calib

rate t

he sy

stem.

5.1Fix

elect

rode o

r rep

lace v

alve.

5.2Re

place

air tra

p.

5.3Pin

point

the p

ressur

e sen

sor (S

eesym

ptoms

18 &

19 in

para.

11.4)

or th

etem

perat

ure se

nsor a

nd re

place

thede

fectiv

e sen

sor.

2.1Re

place

exha

ust va

lve or

clean

pipe

.

Corr

ectio

ns1.1

Repla

ce fus

e.1.2

increa

se tem

perat

ure ad

justm

ent b

ytur

ning t

he po

tentio

meter

screw

.

Possi

ble ca

use c

heck

-up a

nd te

sts5.1

Gene

rally

these

proble

ms ar

e a re

sult o

fthe

inco

mpati

bility

betw

een te

mpera

ture

and p

ressur

e.5.2

Insuff

icien

t qua

ntity

of wa

ter in

the

cham

ber d

ue to

short

circu

it elec

trode

orfau

lty in

let va

lve.

5.2Th

e air t

rap je

t is cl

ogge

d, the

air3e

limina

tion i

s insu

fficie

nt.5.4

One o

f the s

ensor

s is d

efecti

ve.

2.1Ex

haust

valve

is fa

ulty o

r pipe

isclo

gged

.

Possi

ble ca

use c

heck

-up a

nd te

sts1.1

DRY

heate

rs fus

e burn

t.1.2

Check

if the

therm

ostat

switc

hes o

ff at

atoo

low

tempe

rature

.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.3

In Pr

ocess

Malf

uncti

on (c

ont.)

1

1.3.3

Ster

ilizati

on st

age

Symp

tom1.

proce

ss fai

ls on

HIG

HTE

MP,

LOW

TEM

P,HI

GH PR

ES, o

r LOW

PRES

durin

g the

steril

isatio

n stag

e.

2.Th

e fast

exha

ust o

perat

ionis

too sl

ow.

11.3

.3 D

ry sta

ge

Symp

tom1.

The d

ry op

eratio

n is n

oteff

ectiv

e.

54

Corr

ectio

ns

1.1Cl

ean or

repla

ce the

valve

.

1.2Re

place

the bo

ard.

1.3Fix

the c

onne

ction

s.

1.4Th

e valv

e must

be fix

ed or

repla

ced.

1.5Re

place

ANL-

T1 bo

ard.

Possi

ble ca

use c

heck

-up a

nd te

stsTh

e prob

lem m

ay be

a me

chan

ical fa

ilure

of the

valve

, the v

alve d

river

locate

d on A

NL-T

1bo

ard or

the c

ontro

l circ

uit on

board

DIG

-T2.

1.1Cl

ogge

d or f

aulty

valve

.1.2

Check

TP8.

If the

volta

ge is

high

er tha

n4V

and t

here

is co

ntrol

signa

l to th

eva

lve, D

IG-T

2 boa

rd is

faulty

.If

the vo

ltage

is 0V

DC th

e valv

e is o

pen,

thepro

blem

is no

t the c

ontro

l circ

uit bu

t som

e othe

rele

ment

of the

syste

m.

1.3Ch

eck th

e con

necti

on be

tween

the

conn

ector

JP5/4

and t

he va

lve.

1.4Re

move

the c

over

protec

ting t

heter

mina

ls of

the co

il and

check

the

volta

ge w

hen t

he so

lenoid

is co

nnect

ed.

If the

valve

is op

en de

spite

the co

ilvo

ltage

less

than 2

V, th

ere is

ame

chan

ical p

roblem

.1.5

If all

items

check

ed ab

ove c

onfor

m to

requir

emen

ts, A

NL-T

1 boa

rd is

faulty

.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.4

Comp

onen

ts Ma

lfunc

tion

Symp

tom1.

Exha

ust v

alve i

s alw

ays

open

.

55

Corr

ectio

ns

2.1Re

place

board

DIG

-T2.

2.2Fix

the c

onne

ction

s.

2.3Re

place

the so

lenoid

. If th

is do

es no

the

lp, re

pair t

he m

echan

ical p

art of

the

valve

or re

place

the va

lve.

3.1Cl

ean or

repla

ce the

valve

.3.2

Repla

ce the

board

.

3.3Fix

the c

onne

ction

s.

Possi

ble ca

use c

heck

-up a

nd te

stsTh

e prob

lem m

ay be

caus

ed by

the m

echa

nical

part o

f the v

alve o

r the d

river

locate

d on b

oard

ANL-

T1 or

the c

ontro

l circ

uit on

board

DIG

-T2.

2.1Ch

eck TP

8. If

the vo

ltage

is co

nstan

tly0V

DC, w

hile t

he va

lve m

ust be

open

,the

n the

prob

lem is

on th

e DIG

-T2 b

oard.

2.2Ch

eck th

e con

necti

on be

tween

conn

ector

JP5/4

and t

he va

lve.

2.3Ch

eck th

e coil

inpu

t volt

age w

ith th

esol

enoid

conn

ected

to th

e valv

e. If

thevo

ltage

is hi

gher

than 1

0VDC

and t

heva

lve do

es no

t ope

n, the

solen

oid or

the

mech

anica

l part

of th

e valv

e are

faulty

.Th

e prob

lem m

ay be

caus

ed by

the m

echa

nical

part o

f the v

alve,

the dr

iver lo

cated

on th

eAN

L-T1

board

or th

e con

trol c

ircuit

on th

eDI

G-T2

board

.3.1

Clog

ged o

r fau

lty va

lve.

3.2Ch

eck TP

9. If

the vo

ltage

is hi

gher

than

4V, th

e con

trol o

f the v

alve i

s OK,

and

board

DIG

-T2 i

s fau

lty.

If the

volta

ge is

0V an

d valv

e is o

pen,

thepro

blem

is no

t the c

ontro

l circ

uit bu

t othe

rele

ments

of th

e sys

tem.

3.3Ch

eck th

e con

necti

on be

tween

conn

ector

JP5/5

and t

he va

lve.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.4

Comp

onen

ts Ma

lfunc

tion

Symp

tom2.

Exha

ust v

alve i

s alw

ays

closed

.

3.W

ater v

alve i

s alw

ays o

pen

56

Corr

ectio

ns3.3

Repa

ir or r

eplac

e the

valve

.

3.4Re

place

ANL-

T1 bo

ard.

4.1Re

place

board

DIG

-T2.

4.2Fix

the c

onne

ction

s.

4.3Re

place

the so

lenoid

. If th

is do

es no

tsol

ve th

e prob

lem, re

pair o

r rep

lace t

heva

lve

4.4Re

place

ANL-

T1 bo

ard.

Possi

ble ca

use c

heck

-up a

nd te

sts3.3

Check

the s

oleno

id co

il inp

ut vo

ltage

with

the so

lenoid

conn

ected

. remo

ve th

eco

ver th

at pro

tects

the te

rmina

ls of

theco

il. If

the va

lve is

open

despi

te the

volta

ge be

ing le

ss tha

n 2VD

C, th

ere is

ame

chan

ical p

roblem

.3.4

If all

items

check

ed ab

ove c

onfor

m to

requir

emen

ts, A

NL-T

1 boa

rd is

faulty

.

The p

roblem

may

be th

e mec

hanic

al pa

rt of th

eva

lve, th

e sole

noid,

the d

river

on A

NL-T

1 boa

rdor

the co

ntrol

circu

it on D

IG-T

2 boa

rd.4.1

Check

TP7.

If vo

ltage

is co

nstan

tly 0V

atthe

stag

e whe

n the

valve

must

be op

enthe

n DIG

-T2 b

oard

is fau

lty.

4.2Ch

eck th

e con

necti

on be

tween

conn

ector

JP5/3

and t

he va

lve.

4.3Ch

eck th

e volt

age c

oming

to th

e sole

noid

coil w

hile t

he so

lenoid

is co

nnect

ed to

the va

lve. If

the v

alve i

s clos

ed de

spite

the vo

ltage

being

high

er tha

n 10V

DC, th

esol

enoid

is fa

ulty,

or the

re is

ame

chan

ical p

roblem

with

the v

alve.

4.4If

all ite

ms ch

ecked

abov

e con

form

toreq

uirem

ents,

ANL

-T1 b

oard

is fau

lty.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.4

Comp

onen

ts Ma

lfunc

tion

Symp

tom3.

(cont.

)

4.Ai

r valv

e is a

lway

s clos

ed.

57

Corr

ectio

ns

5.1rep

lace D

IG-T

2 boa

rd.

5.2rep

lace t

he A

C-T1

board

, or th

eco

mpon

ents

Q2 (T

RIAC

) or U

2 (MO

C).

6.1Cl

ean or

repla

ce the

valve

.6.2

Repla

ce bo

ard D

IG-T

2.

6.3Fix

the c

onne

ction

s.

6.4Re

pair o

r rep

lace t

he va

lve.

6.5Re

place

ANL-

T1 bo

ard.

Possi

ble ca

use c

heck

-up a

nd te

stsGe

neral

ly thi

s situ

ation

is ca

used

by a

contr

olfai

lure o

n the

DIG

-T2 o

r a fa

ult at

the d

river

locate

d on t

he bo

ard.

5.1Ch

eck th

e volt

age a

t TP5

, if it

isco

nstan

tly hi

gher

than 4

VDC,

the f

ault i

son

the D

IG-T

2 boa

rd.5.2

If the

volta

ge at

TP5 i

s 0VD

C an

d the

pump

work

s the

failu

re is

on A

C-T1

;Th

e prob

lem co

uld be

the m

echa

nical

part o

f the

valve

, the d

river

locate

d on A

NL-T

1 boa

rd or

the co

ntrol

circu

it on D

IG-T

2 boa

rd.6.1

Clog

ged o

r fau

lty va

lve.

6.2Ch

eck TP

7. If

the vo

ltage

is hi

gher

than

4VDC

and t

here

is a c

ontro

l sign

al to

theva

lve, th

e prob

lem is

on D

IG-T

2 boa

rd.If

the vo

ltage

is 0V

DC an

d the

valve

is op

en,

the pr

oblem

is no

t the c

ontro

l circ

uit bu

t one

ofthe

othe

r elem

ents

of the

syste

m.6.3

Check

the c

onne

ction

betw

een co

nnect

orJP

5/3 an

d the

valve

.6.4

Check

the v

oltag

e at th

e sole

noid

coil,

while

the s

oleno

id is

conn

ected

to th

eva

lve, b

y rem

oving

the c

over

which

protec

ts the

term

inals

of the

coil.

If the

valve

is op

en de

spite

the vo

ltage

being

lower

than 2

VDC,

there

is a

mech

anica

lpro

blem

with

the va

lve.

6.5If

all ite

ms ch

ecked

abov

e con

form

toreq

uirem

ents,

ANL

-T1 b

oard

is fau

lty.

11.

TROU

BLES

HOOT

ING

(cont.

) 1

1.4

Comp

onen

ts Ma

lfunc

tion

Symp

tom5.

Vacu

um pu

mp is

activ

ated

conti

nuou

sly 6

.Ai

r valv

e is a

lway

s ope

n.

58

Corr

ectio

ns

7.1Cl

ean or

repla

ce the

valve

.7.2

Repla

ce bo

ard D

IG-T

2.

7.3Fix

the c

onne

ction

s.

7.4Re

pair o

r rep

lace t

he va

lve.

7.5Re

place

ANL-

T1 bo

ard.

8.1Re

place

board

DIG

-T2.

Possi

ble ca

use c

heck

-up a

nd te

stsTh

e prob

lem m

ay be

with

the m

echa

nical

part

of the

valve

, the s

oleno

id, th

e driv

er on

ANL

-T1

board

or th

e con

trol c

ircuit

on D

IG-T

2 boa

rd.7.1

Clog

ged o

r fau

lty va

lve.

7.2Ch

eck TP

10. If

the v

oltag

e is h

igher

than

4VDE

and t

here

is a c

ontro

l sign

al to

theva

lve th

e prob

lem is

on D

IG-T

2 boa

rd.If

the vo

ltage

is 0V

DC an

d the

valve

is op

en,

the pr

oblem

is no

t the c

ontro

l circ

uit bu

t one

ofthe

othe

r elem

ents

of the

syste

m.7.3

Check

the c

onne

ction

betw

een co

nnect

orJP

5/6 an

d the

valve

.7.4

Check

the s

oleno

id co

il inp

ut vo

ltage

while

the s

oleno

id is

conn

ected

to th

eva

lve, b

y rem

oving

the c

over

that

protec

ts the

term

inals

of the

coils

. If th

eva

lve is

open

, desp

ite th

e volt

age b

eing

less t

han 2

VDC,

there

is a

mech

anica

lpro

blem.

7.5If

all ite

ms ch

ecked

abov

e con

form

toreq

uirem

ents,

ANL

-T1 b

oard

is fau

lty.

The p