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TECHNICIANMANUAL
Prevacuum Table - top AutoclaveModels 2340, 2540 EPV
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CAT. No. MAN205-0062 Rev. ACOPYRIGHT
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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
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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
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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
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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
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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
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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
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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!
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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.
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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
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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
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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
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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
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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.
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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.
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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.
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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
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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
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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
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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
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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
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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
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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
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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.
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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