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Service Manual - Frank`s Hospital Workshop

1. failed displayed prior to filling phase ERROR 14 Insufficient drying vacuum Display pressure not reaching 5OkPa ERROR 15 Chamber temperature sensor failure ERROR 16 Clock speed error during sterilizing phase Page 22 of 53 immediately prior to filling stage has failed Displayed pressure has increased 4kPa over a two minute period Insufficient pump efficiency Pump failed to start at begin ning of drying phase stalled models up to mod state E only Temperature readings differ by more than 5 C during heat up through 100 C Real time clock has stopped conditioned dry before starting cycle Ensure auto clave passes a leak test para 55 Ensure chamber has been ventilated with door open for at least one minute before starting cycle Check pump function repair or replace para 38 and 20 if required and check all connections for leaks Check pump valve seats have leakage path models up to mod state E only Check chamber temperature sensors are clamped tightly to chamber and re calibrate para 57 onwards Re start clock by resetting time in SET UP mode para 51 If this is not successful replace control board para 9 Continued ST SM45g SES 2000 53 AUTOCLAVE Part 3 PART 3 MAINTENANCE Fault 28 ERROR 17 Insufficient drying temperature due to a Calibration error ao
2. 16 14 13 12 11 52272 Go 9 10 610 9 VIEW ON ARROW Note Also see Parts List 3 for other chamber fittings and assemblies e ZC 44 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 4 PART 4 ILLUSTRATED PARTS LIST PARTS LIST 2 PIPES AND VALVES Item No Part No Description Qty Recommended Standard Long Per Holding Per Unit Unit Per Year Pressure chamber assy 1 490040 490117 Chamber 1 380040 Chamber clamp 1 709924 Screw pan hd M4 x 12 2 P 307163 Washer shakeproof M4 4 2 424324 Condenser 1 bi 710119 Screw pan hd M5 x 10 7 710733 Washer shakeproof 5 8 3 424152 Vacuum pump diaphragm type 1 5 709863 Washer M6 4 i 710412 Screw hex hd M6 x 35 2 300832 Foot 2 i 713963 Washer shakeproof M6 2 P 710372 Nut M6 2 424335 Inline filter 1 dk 759584 Diaphragm and valve repair kit ep 111372 Piston pump to Diaphragm pump retrofit kit 759792 Diaphragm pump head assy E 4 733587 AVA mount 4 5 427089 Spacer 4 6 424265 Cover assy condenser 1 7 424246 424211 Vacuum solenoid valve 1 8 424286 Steam bleed solenoid valve 1 9 4243014 Pipe pump to condenser 1 10 4242248 42421834 Pipe Vacuum sol valve to 1 11 424219 Pipe
3. Continued Page 21 of 53 Part 3 SES 2000 Vac 1 53 AUTOCLAVE ESCHMANN PART 3 MAINTENANCE Fault Possible Cause Remedy 21 ERROR 11 Insufficient a Previous cycle has leftchamber a Reset chamber condition by second vacuum pulse too hot and wet running a 134 C unwrapped with drying cycle and leave door open for 5 minutes on completion b Pressure not reducing to set b Carry out leak test para 55 point due to pump If it fails check all inefficiency connections door seal and solenoid valves for leaks c Pressurecalibration error c Recalibrate pressure channel para 57 onwards d Pump cooling duct not fitted d Fit cooling duct para 32 and check cooling fan operation 22 ERROR 12 No steam pulse Display Pressure not reaching Check heater element i e not 120kPa Porous and wrapped open circuit solid state relay cycles or 98kPa unwrapped RL2 energised red LED cycles D6 on SSRB Fig 2 4 item14 and mains voltage is reaching heater element Also see Appendix B 23 ERROR 13 Steam quality a Atbeginning of sterilizing phase a Checkchambertemperature error displayed at the pressure displayed is not within sensors are fitted correctly beginning of the preset limits recalibrate pressure and sterilizing phase temperature para 57 onwards Also see Appendix B 24 ERROR 13 Air detector test a Two minute duration leak test a Ensure load is correctly
4. UK Customers Eschmann Equipment Peter Road Lancing West Sussex BN15 8TJ England Tel 44 0 1903 765040 Fax 44 0 1903 875711 Overseas Customers Contact your local distributor In case of doubt contact Eschmann Equipment Patents and Trade marks The ESCHMANN logo is a registered trade mark of Eschmann Holdings Ltd SES200 is a trade mark of Eschmann Holdings Ltd Patents Patents Pending plus Pat 055090033 and Pat GB2238407 Copyright 2004 Eschmann Holdings Limited rights reserved This booklet is protected by copyright No part of it may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without written permission from Eschmann Holdings Limited The information in this publication was correct at the time of going to print The Company however reserves the right to modify or improve the equipment referred to The CE marking affixed to the product certifies that it complies with the 0473 European Medical Devices Directive 93 42 EEC and related legislation ST SM45g January 2005 0473 amp ESCHMANI SES 2000 Vac LS3 AUTOCLAVE CONTENTS Page Page Contents 8 Display board 30 Technical data 4 Special operating modes 30 Engineering mode 30 General 6 Set up procedure 7 30 Associated publications 6 Setting the autoclave serial number 31 Servicing 6 Setting the cycles in use
5. 01 lo 23 Enter the autoclave serial number as follows Check that the display shows GET SER NO i Press switch SW1 to accept YES or switch SW2 to reject NO Pressing switch SW2 will move the cycle direct to Setting the Cycles in Use mode ii If SW1 is pressed the display will change to SET MOD LEVEL Enter the modification state 01 to 26 2 by pressing switch SW1 to increase the number or switch SW2 to decrease the number iii When the number is correct press switch SW3 to accept the entry Check that the display has changedto SET BUILD YEAR i Enter the last digit of the year of manufacture 7 1997 0 2000 by pressing switch SW1 to increase the number or switch SW2 to decrease the number ii When the number is correct press switch SW3 to accept the entry Check that display changes to SET BUILD MONTH i Enter month code A January to L December by pressing switch SW1 to increase the number or switch SW2 to decrease the number ii When the number is correct press switch SW3 to accept the entry Check that display changes to SET SER NO HI 00 i Enter the first two digits of the serial number by pressing switch SW1 to increase the number or switch SW2 to decrease the number ii When the number is correct press switch SW3 to accept the entry Checkthatdisplay changes to SET SER NO LO OO i Enter the last two digits of the serial number by
6. indicating that the vacuum pump has started and the vacuum solenoid valve has opened to evacuate the air from the chamber 15 Whenthe pressure in the chamber has decreased to therequired value forthe programme selected the water fill valve will open and FILLING willbe displayed indicating that water is being sucked from the reservoir and into the chamber 16 When the cycle has started the door cannot be opened due to the electric door lock and vacuum force on the door 17 When the correct quantity of water has entered the chamber the water fill valve closes together with the vacuum valve The heater controlled by the control board will switch on and the pressure in the chamber will increase This phase is indicated by PULSING being shown on the display 18 heater is controlled by a system which ensures that the operating temperature is reached with minimal overshoot Initially the heater will be on continuously and the measured temperature will be displayed Note however thatthe system does notregister temperatures below 92 C 19 Temperatures are displayed with a resolution of 0 1 C using signal averaging to ensure a stable accurate display 20 Controlofthe cycleis fully automatic with temperature information being monitored by temperature sensors Timing is controlled by the control board and cycle times cannotbe adjusted By comparing measured values with known time temperature relationships the contr
7. 47 Theautoclaveserial number whichis onthe dataplate onthe inside cover of the autoclave door and on the back of the autoclave cover comprises 5 parts JL JL s om Prefix letters determined by chamber size and model Modification state A through Z e g 7 1997 0 2000 Month of manufacture A Jan L Dec 5 Last digit from Year of manufacture Serial No comprising two groups 01 is the Hi group thousands and hundreds 23 is the Lo group tens and units Theserial number will be automatically prefixed by the letters LV or LLV indicating Standard or Long chamber versions respectively This is determined by the set up procedure in para 48 d amp e Themodification state is represented by a letter A to Z Itis entered into the autoclave as a two digit code 01 A to 26 2 Note that on the printout the letter will be shown not the number Q Theyearof manufacture which is represented by the last digit of the year is entered into the autoclave ST SM45g as asingle number Thus if the year is 1996 a 6 will be indicated e g 7 1997 0 2000 The month of manufacture is represented by a single letter A January H August The serial number hi00 and 1000 which is represented by four digits is entered into the autoclave as two two digit groups hi and lo hi thousands and hundreds lo tens and units Thus for serial number 0123 hi
8. Dry cycle Wrapped Dry cycle Unwrapped Dry cycle Unwrapped cycle ST SM45g SES 2000 Vac 1 53 AUTOCLAVE TECHNICAL DATA Long Version Electrical Data Supply 230Vac at 50 60Hz Nominal Loading 230V 2 75kW 12 Chassis 15A 250V x2 Part No 301871 Fuses Relay board F5A 250V x1 T2A 250V x1 was x 2 see Parts List 3 15 250V x1 Safety standards EN61010 1 1993 EN61010 2 041 1996 Sterilizing Data Sterilizing time At 134 137 0 3 mins 15 sec At 121 124 C 15 mins Typical overall cycle 134 C Unwrapped time D indicates 15 minutes drying included 134 C Unwrapped 31 minutes D 134 C Wrapped 46 minutes D 134 C Porous 56 minutes D 121 C Unwrapped 26 minutes 121 C Unwrapped 41 minutes D 121 C Wrapped 57 minutes D 121 Porous 67 minutes D Note Overall cycle times may vary depending on machine and loading conditions Nominal Operating pressures 134 C cycle 3 14 bar abs 121 cycle 2 11 bar abs Water reservoir capacity 3 5 litres ST SM45g Dimensions Autoclave Width 460mm Length 650mm Height 360mm Feet spaced to fit 600mm worktop Chamber Diameter 200mm Length 500mm max Porous Load Width 156mm max basket Length 450mm Height 80mm Trays Width 180mm Length 450mm Height 23mm Tray Loading 3 5 kg per tray Chamber capacity 15 6 litres Weight approx Net 52kg Shipping 58kg Symbols For use with
9. The programme indicator lights at each side of the programme selector buttons will change to indicate a change of selection between 134 C and 121 C eachtime Door lock position 77 indicator Locked Safety catch T una door plate Chamber pressure indicator Unlocked Fig 2 1a Autoclave door handle Autoclave d Display Window VACUUM RAPID STERILIZATION 8 Programme Indicator Lights Green LED s 134 C 121 C SWI com S055 SW2 c3or x3 o3 SW3 OH Lr 30r3 Overheat SWA Warning _ Lamp Al Sall oworr Switch SW5 Fig 2 1b Autoclave control panel Page 10 of 53 the appropriate selector button is pressed In addition the display will show the appropriate programme description to confirm the programme that has been selected Once the programme and the temperature range has been selected the sterilization cycle will start automatically after adelay of approximately four seconds 13 The printer if fitted will start printing and as the cycle progresses various display messages will appear in the display window to indicate the programme status Note Ifaprogrammeis started in error itcanbe cancelled by pressing the P selector button SW5 provided thatthe cycle has not reached the water fill stage 14 When a cycle is selected SW1 SWA pressed CYCLE STARTED will be displayed quickly followed by VACUUM
10. a Loosen clamp screw 7 and slide microswitch actuator lever 5 complete with leaf spring 4 from actuator lever 2 and then remove nylon washer 3 b Withdraw actuator lever 2 from the front of the panel and remove nylon washer 1 Remove clamp screw 7 and washer 8 to release leaf spring 4 d Remove nut 9 and striker screw 6 e Inspect and renew all defective items Reassemble and adjust the mechanism as follows refer to parts list if replacing parts to ensure compatible spare parts are used f Apply a smear of silicone grease Part No 306055 to both sides of nylon washer 1 and position it on spindle of actuator lever 2 g Apply a little silicone grease Part No 306055 on spindle of actuator lever 2 and slide the lever through the front panel Apply a smear of silicone grease to both sides of nylon washer 3 and locate the washer on the protruding end of the spindle at the back of the neck ring h Fitleaf spring 4 to microswitch actuator lever 5 with clamp screw 7 and washer 8 i Fitstriker screw 6 use thread lock part number 306033 on threads and nut 9 to microswitch actuator lever 5 j Fitmicroswitch actuator lever 5 to actuator lever 2 ensuring thatthe mechanism is located between limit stops 11 k Ensure leaf spring 4 is positioned and adjusted to keep microswitch actuator lever 5 clear of microswitch 10 While tightening clamp screw 7 twist l
11. pressing switch SW1 to increase the number or switch SW2 to decrease the number ii When the number is correct press switch SW3 to accept the entry Page 31 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE GG ESCHMANN PART 3 MAINTENANCE The autoclave serial number is now set and you will be asked if the serial number is correct Press switch SW1 ifthe answer is YES or switch SW2 if the answer is NO If serial number is incorrect repeat the procedure to set the serial number Setting the Cycles in Use Fig 3 3 49 Enter the cycles required as follows a Checkthat display shows SET CYCLES i Press switch SW1 to accept YES or switch SW2 to reject NO Pressing switch SW2 will move the cycle direct to Setting the Display Language mode ii If Switch SW1 is pressed the display will changeto ANSWER YES NO 2 Press switch SW1 for YES or switch SW for NO b Checkthatdisplay changesto 134 C POROUS DRY i Press switch SW1 YES if this cycle is to be set or switch SW2 NO to reject it c Checkthatdisplay changesto21 C POROUS DRY i Press switch SW1 YES if this cycle is to be set or switch SW2 NO to reject it 50 Continue the procedure until all possible cycles have been accepted or rejected Note Atleast one cycle must be accepted Setting Date and Time Fig 3 3 51 Setthe date and time as follows a Select DATE AND TIME by pressing SW1 and SWA simultaneously then switch
12. pressurised red and it is unsafe to open the door or unpressurised green and it is safe to open the door Solenoid Door Lock Fig 2 4 item 12 The solenoid door lock prevents the door being opened by the operator once the cycle has started The lock holds the door closed until the sterilizing cycle is complete It will also keep the door closed under all fault conditions As absence of power is also a fault the unit power switch must be set to on in order to open the door Note It is necessary to override the electrical door lock to clear an error code This is done by setting the power switch to off then after a few seconds setting it back to on again while pressing and holding the P selector SW5 on the front panel Fig 2 1b Water Reservoir Fig 2 2 item 16 This is used to hold distilled or deionized water or water treated by reverse osmosis whichis admitted intothe chamber via the water fill valve The water reservoir also receives hot water and steam vapour discharged from the chamber towards the end of the cycle via the discharge valve The vacuum pump Fig 2 3 item 7 also discharges into the water reservoir Page 7 of 53 Part 2 SES 2000 Vac LS3 AUTOCLAVE PART 2 DESCRIPTION Water Filter The water filter is fitted on the end of the water fill pipe in the water reservoir and filters the water entering the chamber Reservoir Float Switch Fig 2
13. 1 380032 Spacer 2 6 424204 Sub dividing panel 1 7 424172 PCB support 1 8 696643 PCB slide 1 i 300775 Pop Rivets 4 9 424109 Front panel without printer 1 E 10 424108 Front panel with printer 1 12 Pressure chamber 1 assy See Parts List 2 13 490228 490178 Carrier assy tray 1 424392 424393 Splash barrier 1 301409 Drip tray 1 14 424266 Reservoir assy 1 424127 Reservoir 1 j 424221 Drain tube 1 424165 Float sensor 1 1 424220 Fill pipe 1 x 424261 Filter 1 1 424129 Manifold 1 424128 Condensing coil 1 15 424191 Bracket thermostat manual reset 1 T 307249 Screw pan hd M4 x 8 11 307163 Washer shakeproof 4 11 16 424233 Conduit 1 427005 Door post 8 S 307225 Washer shakeproof M8 8 307221 Nut M8 8 17 427010 Door latch 1 307249 Washer shakeproof M5 1 307163 Screw skt hd M5 2 Was 307137 Screw self tapping 3 8 Not shown Continued Page 42 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 4 PART 4 ILLUSTRATED PARTS LIST PARTS LIST 1 GENERAL SPARES Item No Part No Description Qty Recommended Standard Long Per Holding Per Unit Unit Per Year 18 424116 Door assy 1 n 424102 Door beam assy 1 j 424106 Door latch 1 427023 Wire spring 2 n 427009 Pin pivot 2 427012 Block hing
14. 22 Control board faulty connections PARTSREPLACEMENT AND ADJUSTMENT Faulty band heater WARNING Switch off and disconnect mains power supply before removing autoclave cover or doing maintenance procedures Check that chamber is at atmospheric pressure before opening the door When the door is opened beware of possible very hot water or steam escaping from the chamber Autoclave Cover Fig 2 2 item 18 Removal 3 Toremove the cover CAUTION An earth lead is connected between the terminal block and the earth stud inside the rear of the cover Disconnect the lead before removing the cover completely a Unscrew and remove the four cover screws two on each side from the casing lower edge Remove reservoir lid With unit facing towards you remove the cover lifting it from the rear of the unit first Refittin 4 Torefit the cover Re connect the earth lead between the terminal block and the earth stud inside the rear panel of the cover Carefully locate the tabs atthe front of the cover into the slots in the top of the front panel of the unit then press the cover down in position c Refit the four cover screws and the reservoir lid ST SM45g Possible Cause Band heater sensor faulty Faulty solid state relay or Remedy Band heater not reaching setpoint Check calibration para 57 onwards Fit new sensor para 30 Fit new control board para 9 Fit new SSR board if conne
15. 32 Setting the display language 32 PART 2 DESCRIPTION Setting date and time 32 General 2 2 2 7 Setting cycle counter 32 Operatingfeatures 7 Errors and error clearing 32 Operationcycle 9 Leaktestprocedure 33 Display messages H Autoclave Calibration 33 Error indication H General 33 General Calibration procedure 33 Overheating 12 Pressure relief valve test 35 Band heater calibration 36 PART 3 MAINTENANCE Functional test 36 Fuses 0 72 15 Se san 17 Fault diagnosis 220200000047 PART 4 ILLUSTRATED PARTS LISTS Parts replacement and adjustment i ue oe dd Illustrated parts list 1 General spares 41 Autoclave cover EE 8 23 Illustrated parts list 2 Pipes and valves 44 Reservoir assembly 93 Illustrated parts list 3 Heater Transformer 4 o 4 ok 28 and process controls 46 Control board o ae 124 Pressure door lock S e 24 ILLUSTRATIONS Steam bleed solenoid valve 24 Fig 1 SES 2000 Vac LS3 autoclave 6 Door interlock microswitch e 24 Fig 2 1a Autoclave door handle 10 Solenoid door lock 25 Fig 2 1b Autoclave control panel 10 Temperature sensors 25 Fig 2 2 Autoclave general arrangement 13 Solenoid valves Fig 2 3 Autoclave pipes and valves 14 Vacuum steam bleed water discharge 25 Fig 2 4 Autoclave heater and process controls 15
16. Air Inlet Solenoid Valve Assembly 25 Fig 2 5 Sterilizing system schematic diagram 16 Water Fill Solenoid Valve Assembly 26 Fig 3 1 Door interlock microswitch 37 Heating element 2 26 Fig 3 2 Discharge line filter 37 Door seal 26 Fig 3 3 Control panel and switch identities 37 Vacuum pump i a o T 26 Fig 3 4 Control board adjustments 37 Condenser 27 Fig 3 5 System circuit diagram 38 CoolingFans 27 Fig 3 6 Piston vacuum pump 40 Bacterial air filter 27 Fig 3 7 Replacement kit for piston pump 40 Discharge line filter od de x4 207 Pressure transducer 27 TABLE Solid state relay board 27 Error code table 12 EMC board 28 Fault Diagnosis table 17 Printer ie e 4 js 28 Safety Valve tuc APPENDIX A Band heater Temp Sensor 5 28 Autoclave printer 50 Power switch CIN Fig A1 Fig A4 Autoclave printer 51 Float switch E o T 28 Cooling ducts we we 128 APPENDIX B Bandheater 200400400 28 424138 and Relay Assembly 112507 Chamber water level sensor io 45 em 188 modification November 2004 52 EE APPENDIX C er 29 Vacuum pump maintenance T 29 New fittings for board 53 ST SM45g Page 3 of 53 SES 2000 Vac 1 53 AUTOCLAVE TECHNICAL DATA Standard Version Electrical Data Supply 230
17. Fig 3 6 Piston vacuum pump as fitted to some autoclaves no longer available Fig 3 7 Replacement kit for piston vacuum pump no longer available Page 40 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 4 PART 4 ILLUSTRATED PARTS LIST PARTS LIST 1 GENERAL SPARES NOTE Change of parts for Door Actuator lever assembly and Washer Note when changing a door 424280 ensure the following parts are used Door 490017 Washer 112872 and current issue Lever 427104 The washer specified above is thinner than the original washer 307231 Differentto door 490017 inthatthere is arecess in it adjacent to Lever 427104 when door closed If door 424280 is already fitted the washer and lever will already be correct The current issue Lever can be identified as the raised boss of the lever is now facing out and not in ST SM45g Page 41 of 53 Part 4 SES 2000 Vac LS3 AUTOCLAVE ESCHMANN PART 4 ILLUSTRATED PARTS LIST PARTS LIST 1 GENERAL SPARES Item No Part No Description Qty Recommended Standard Long Per Holding Per Unit Unit Per Year 1 424117 Top cover 1 2 424168 Chassis 1 j 307267 Pipe clamp 1 i 1119284 Screw self tapping i 4 4 3 480301 Foot and screw assy 4 4 380045 Spacer 2 301136 Nut spire 4 490202 Chamber support 1 307223 Washer shakeproof M5 5 307224 Nut M5 2 604994 Label earth 3 5 424169 Dividing panel
18. If fitted remove the double sided tape from the base of the choke item 2 Fix mounting plate to chassis with 2 x M4 x 6mm Pan head screws Part No 307152 and 2 x M4 washers Part No 710731 Fit choke onto mounting plate with spacers nuts and washers as shown in illustration ST SM45g Page 53 of 53 DISCOVER NEW INNOVATION NEW TECHNOLOGY DISCOVER ESCHMANN Eschmann Equipment Peter Road Lancing West Sussex BN15 8TJ England Tel 44 0 1903 753322 Fax 44 0 1903 875789 www eschmann co uk
19. S ESCHMANN SES2000 VAC LS3 VACUUM AUTOCLAVE 110258 ST SM45g ESCHMANN Introduction Description Maintenance Illustrated Parts list Read these Instructions before use Keep this Service Manual in a safe convenient place for future reference Read in conjunction with the Publication detailed in Part 1 This Service Manual applies to the following Autoclaves Note The E in the serial number below is the modification state of the autoclave and is used within this manual to identify availability of spare parts where some items on early models are no longer available SES 2000 Vac LS3 Standard from Serial Number SVE1A0000 without printer REF 87 050 06 with printer REF 87 050 14 SES 2000 Vac LS3 Long from Serial Number SLVE1A0000 without printer REF 87 050 22 with printer REF 87 050 30 Eschmann After Sales Service Department The Eschmann After Sales Service Department is staffed and equipped to provide advice and assistance during normal office hours To avoid delays when making enquiries please quote the Model and Serial Number of your Autoclave which is shown on the Serial Number plate the location of which is shown below Please ensure you include all alpha and numeric digits of the Serial Number Serial Number Plate For further information visit www eschmann co uk All correspondence relating to the after sales service of Eschmann Equipment to be addressed to
20. Vacuum Pump Fig 2 3 item 7 20 The vacuum pump diaphragm type fitted to most autoclaves is illustrated in Fig 2 3 item 7 The piston pump illustrated in Fig 3 6 is no longer available The diaphragm pump can be refurbished see para 38 To remove and replace a diaphragm pump proceed as detailed in the section that follows Note If the piston pump see Fig 3 6 is fitted to the autoclave this should be replaced if problems are encountered with adiaphragm pump The kit part number 111372 contains all the parts and fitting information required to achieve this replacement Diaphragm pump Fig 2 3 item 7 Toremove and replace the old diaphragm vacuum pump proceed as follows a Disconnectelectrical connection from vacuum pump ST SM45g SES 2000 53 AUTOCLAVE Part 3 PART 3 MAINTENANCE b Release the plumbingconnections fromthe vacuum pump noting the orientation of parts to ensure correct connection Remove pipework from vacuum pump Remove the nuts and washers securing the vacuum pump to the AVA mounts and remove the vacuum pump noting orientation arrows on pump heads e Fitneworrefurbished vacuum pump see para 38 in exactly the same way as the original one If the vacuum pump is new remove the two plastic pipe fittings from each end ofthe pump and replace with 1 8 in BSPT fittings Condenser Fig 2 3 item 6 21 To remove the condenser proceed as follows a Disc
21. alternating current Caution Hot Surface Caution refer to accompanying documents Porous load Dry cycle Wrapped Dry cycle Unwrapped Dry cycle Unwrapped cycle Page 5 of 53 ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 1 PART 1 INTRODUCTION GENERAL Fig 1 1 This Manual contains descriptive maintenance and spare parts information for the SES 2000 Vac LS3 autoclave units only 2 The autoclave is a portable electrically operated steam unit designed for sterilizing wrapped unwrapped or porous loads Adrying phase is included in the porous and wrapped cycles which is optional for an unwrapped cycle 3 Wrapped loads must be packed single wrapped in L M G SMITH BROTHERS VIEW PACK SELF SEAL pouches and sterilized using the special pouch rack accessory The autoclave will also take cassettes using a cassette carrier A wire basket is provided for sterilizing porous loads 4 The autoclave operates automatically at the touch of a single programme selector touch button and has eight sterilization programmes 5 The autoclave is available with short or long chambers and with or without an integral printer for recording details of the sterilizing cycle Details of the printer are given in Appendix A page 50 ASSOCIATED PUBLICATIONS 6 Separate installation and user instructions are given in the SES 2000 Vac LS3 autoclave Instructions for Use ST IM62 SERVICING WA
22. assembly ensure the normal autoclave tests are performed to check function 424138 ASSEMBLY 112507 Spade connection identifications 3 EXISTING FIXINGS A left hand pin and lead as drawn and identified on both lead and relay New Relay PCA 424138 and Solid State Solid State Relay Assembly 112507 Relay Assembly 112507 assembly detail connection details Page 52 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE APPENDIX C New fittings for EMC board January 2005 Appendix C The fitting of the choke which is part of the EMC board has been changed Without using the mounting plate and parts shown below chokes with the new fitting cannot be used in units that have the old chassis i e achassis without the two new hank bushes that align with the two fixing holes on the base of the choke The drawing and information shown below detail all the parts required and the fitting instructions to enable the new choke to be fitted to an old chassis If the unit has a chassis with the new hank nuts the choke is fitted to the chassis with 2 M3 x 6mm Pan head screw part number 391086 2 M3 shakeproof washers part number 307159 Note The items 1 3 4 and 5 below are not required Item Part No 1 2 3 4 5 Assembly notes 112701 n a 380044 709860 710390 Description Qty Mounting plate 1 Choke part of EMC board 424156 1 Spacer 2 M3 washer 2 M3 nut Nyloc 2 n a not applicable
23. be heard and the temperature will rise until the 134 C sterilize conditions are reached iii Repeated pressing of switch SW1 willtoggle between 134 C and 121 C resetting the sterilizing time to one hour at each selection Thedisplay willshow 121 C WRAPPED DRY on the top line and initially VACUUM ONT on the bottom line The pressure kPa displayed in the bottom right hand corner should be steadily decreasing Page 34 of 53 d Afterapproximately four minutes from start of cycle adjust V5 clockwise to increase on control board Fig 3 4 sothatthe autoclave kPa display reading matches the digital display on the data recorder Note Theautoclave display can only indicate in steps of 2 kPa therefore it has to be adjusted to the nearest 1 kPa of the data recorder reading rounded up or down as required e During heating to 121 check that air vent valve solenoid operates at approximately 104 kPa and that steam waterthen flows out of the exhausttube in the reservoir manifold f Make sure the door pressure lock engages before the pressure reaches 120 kPa When door pressure lock engages check door pressure indicator Fig2 1a changes from full green to full red when viewed horizontally and level with the indicator Make sure thatthere are no audible or visible leaks When the temperature has stabilized in the sterilization phase adjust V1 clockwiseto increase oncontrol board Fig 3 4 until as close a
24. breaks b Main fuses blown b Replace fuse s rearpanel c Faulty power switch c Replace power switch para 31 d Solid state relay board d Replace fuse fuse blown or loose e Transformer failed e Checktransformer secondary voltage 20V a c rms Replace transformer if output is zero para 8 f Short circuit on f Check sensor fill valve vent 24V circuit valve etc for short circuit Replace where necessary g Short circuit on solid state g Check SSR board is correctly relay board fitted in bottom guide with correct clearance from dividing panel Also see Appendix B Note Blown fuses can indicate further problems Always investigate the reason for any fuse blowing but bear in mind that fuses can age and blow for no other reason Continued ST SM45g Page 17 of 53 Part 3 Fault Door cannotbe opened Chamber will not fill FILL RESERVOIR displayed Display shows ERROR 3 Display still shows OPEN THE DOOR after door is opened Display shows ERROR 2 after cycle started Page 18 of 53 SES 2000 Vac LS3 AUTOCLAVE PART 3 MAINTENANCE Possible Cause a Pressure door lock jammed b Pressure in chamber c Vacuum in chamber d Solenoid door lock inoperative when autoclave power is switched on a No water in reservoir b Water in float switch a No water in chamber due to water fill valve or associated pipes or filter bl
25. completion remove the chart recording of the calibration and the functional test c Removethetemperature and pressure probes and refit covers to ports Fig 2 4 items 23 and 22 d Refit cover to autoclave Page 36 of 53 ST SM45g SES 2000 1 53 AUTOCLAVE Part 3 PART 3 MAINTENANCE 1 Nylon washer 7 Clamp screw 2 Actuator lever 8 Washer 3 Nylon washer 9 Nut 4 Leafspring 10 Microswitch 5 Microswitch actuator lever 11 Limit stops 6 Striker screw Fig 3 1 Door Interlock Microswitch Process Display Window CHE FOOT 8 Programme VACUUM RAPID STERILIZATION Indicator Lights 134 C 121 C n a Et o Aom SWI SW2 SW3 SW4 LLAD Fig 3 3 Control Panel and Switch Identities ST SM45g Body 1 2 3 4 Copper washer 5 6 Gauze filter Fig 3 2 Discharge Line Filter VI V2 V3 v4 v5 V6 V7 SW6 Channel A Zero V2 R13 Channel A Span R21 Channel B Zero V4 R23 Channel B Span V5 R30 Pressure Zero R36 Pressure Span V7 R49 Aux Heater Setpoint SW6 Engineering Switch Fig 3 4 Control Board Adjustment Page 37 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE ESCHMANN PART 3 MAINTENANCE RELAY 4 112507 is only ASSEMBLY 112507 required with
26. keep it dry Vacuum Solenoid Valve Fig 2 3 item 1 When open this valve allows the vacuum pump to suck air and steam from the chamber ST SM45g SES 2000 53 AUTOCLAVE Part 2 PART 2 DESCRIPTION Vacuum Pump Fig 2 3 item 7 The vacuum pump is atwo stage diaphragm pump usedto suck air and steam from the chamber Some models were fitted with a piston pump see Fig 3 6 whichis no longer available in case of fault replace it with the current diaphragm pump Q Condenser Fig 2 3 item 6 The condenser pre cools air and steam from the chamber before it enters the vacuum pump Q Bacterial Filter Fig 2 3 item 10 The bacterial filter filters the air entering the chamber Chamber Temperature Sensors Fig 2 4 item 16 These are used to sense the chamber temperature andare fitted at the rear ofthe chamber One sensor controls the temperature within the chamber andthe other controls the displayed and the printed temperatures Q Band Heater Temperature Sensor Fig 2 4 item 15 The band heater temperature sensor is used to control the band temperature during the drying phase Thermocouple Entry Port Fig 2 4 item 23 Thisis used to insert a thermocouple into the chamber to allow the operating temperature to be measured and if necessary adjusted Q Pressure Test Port Fig 2 4 item 22 The pressure test port is used to insert a pressure measuring probe to monitor t
27. reversing the removal procedure Chamber Temperature Sensors Fig 2 4 item 16 14 Removecable tie then loosen 14mm nuton chamber fitting and slide the clamp plate complete with spring sensor pocket and temperature sensors clear of the chamber fitting Remove temperature sensors from the sensor pocket When removing the temperature sensors carefully note the position of the connectors on the control board and then disconnect them When fitting a new unit coat sensors and sensor pocket with a thin layer of heat sink compound Part No 605092 and ensure that the assembly is free of dirt and grit Note When a new temperature sensor is fitted the autoclave mustbe re calibrated see Calibration Procedure para 57 onwards ST SM45g Solenoid Valves Fig 2 3 items 1 2 3 4 and 5 Valve Maintenance Note a If the valve assemblies are to be dismantled into their component parts make sure that i Careful note is taken of the connections and of the alignment and angles of components and pipes relative to the valve to ensure correct re assembly ii Connections are not overtightened CAUTION Do not misplace the small internal springs in the sealing plunger All valves on the vacuum autoclave have 14 Watt coils and are not interchangeable with valves on other autoclaves The two electrical connections to the solenoid valves can be made either way round Vacuum Steam Bleed and Water Discharge Solenoid Valv
28. seal potentiometers V1 V2 V3 V4 V5 and V6 on control board with small quantity of anti tamper sealant Part No 670678 between the adjuster screw and the plastic body not in the screw slots Note If calibration of the autoclave cannot be achieved usingthe calibration procedure replace the control board and repeat the calibration procedure Pressure relief valve test WARNING During testing high pressure steam will be released from the pressure relief valve Ensure safety of all personnel 64 The pressure relief valve should be tested every 12 months or at service intervals to ensure free movement of parts To test the pressure relief valve proceed as follows Note The pressure relief valve is set to operate at 262kPa gauge butis allowed an over pressure margin of 1096 maximum i e 288 2kPa gauge If dealing with absolute pressure readings subtract local atmospheric pressure to obtain gauge values a Calibratetheautoclave asdetailedin para 57 onwards and make sure that it is sterilizing at 134 C b Whilst in calibration mode press and hold switch SW3 This will operate the heater element until the Switch is released c Thetemperature and pressure should increase until at approximately 345 kPa absolute as shown on the chart recorder the pressure relief safety valve operates d Release switch SW3 Page 35 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE ESCHMANN PART 3 MAINTENANCE Band hea
29. sensor b Release sensor wire from all cable clamps and the Ferrite clamp by releasing its tie and clips c Unplug from the SSR board d Refit by reversing the above and coat the sensor with a light smear of zinc oxide based heat transfer compound Ensure that the sensor is in tight contact with the band heater by adjusting the clamp if required Note When anew temperature sensor is fitted the band heater must be re calibrated see para 57 onwards Power Switch Fig 2 4 item 9 31 remove and replace power switch proceed as follows Remove 4 spade connectors from the switch noting the terminals each was connected to Page 28 of 53 b Release switch from the front panel by pressing the retaining lugs in on each side and withdraw c Replacenew switch by reversingthe above ensuring correct orientation CO left I right Float Switch Fig 2 3 item 11 32 To remove and replace the float switch proceed as follows a Drainreservoir and disconnectthe two in line bullet connectors b Remove float switch retaining nutand remove switch c Refit by reversing the above ensuring that the sealing washer of the switch is correctly positioned between the switch housing and the reservoir wall and the thin section of the float is positioned uppermost Cooling Ducts 33 Thereisa cooling ductfitted the Standard autoclave a sensor cover This is fitted as follows a The sensor cover is fitted by undoing the r
30. showninthe table below If necessary calibrate the autoclave process display by making small adjustments of V6 clockwiseto increase on control board Fig 3 4 Temperature Pressure Settings Temperature ChartRecorder Set Autoclave Display Pressuretrace adjust V6 to kPa DisplayPessure All pressures are absolute and are measured in kPa 121 0 205 0 204 206 121 5 208 1 208 210 122 0 211 3 210 212 122 5 214 7 214 216 123 0 218 0 216 218 123 5 221 4 220 222 124 0 225 0 224 226 134 0 304 6 302 304 134 5 309 3 308 310 135 0 313 9 312 314 135 5 318 5 318 320 136 0 323 1 322 324 136 5 327 8 326 328 137 0 332 4 332 334 n Pushswitch SWI Fig 3 3 to decrease temperature to 121 andallowto stabilize fora minimum of five minutes o Make sure that the temperature calibration as shown on the chart recorder is still as specified in para 63h lf adjustment is required proceed as detailedin para 63h p Checkthe autoclave display and make sure that it corresponds to the temperature shown in the Temperature Pressure Settings table in para 63m ST SM45g If calibration of the autoclave display is required make small adjustments to V6 clockwise to increase on control board Fig 3 4 q Press switch SW1 Fig 3 3 to return to 134 C and allowto stabilise for 5 minutes re check temperature and pressure calibration If necessary re calibrate as detailed in paras 63k to 63p Oncompletion of calibration
31. 3 item 11 The water reservoir is fitted with a float switch which will stop the cycle being started if there is insufficient water in the reservoir to complete a chamber fill Fill Reservoir will be displayed should this occur Heating Element Fig 2 4 item 1 The heating element consists of a single immersion element inside the chamber The heating elementis controlled by a solid state relay and protected from overheating by amanual reset thermostat Referto TECHNICAL DATA for heater element loading Solid State Relay Board Fig 2 4 item 14 See Appendix B There are a number of key functions provided by the relay board Solid state relays SSR control the mains supply to the water heater element 10A band heater 10A and vacuum pump 2A status LEDs give an indication of drive status On Off Mechanical relay provides additional safety for heater and pump circuits Fusesforprotectingthe 20V a c supply 3 15A condenser fan 2A and vacuum pump 5A see Parts List 3 Two voltage regulators Autoclave bleeper Connections for mains loom signal loom temperature and pressure sensors solenoid valves and transformer Interface for front panel control board and printer Manual Reset Overheat Cutout Fig 2 4 item 21 The manualresetoverheat cutoutis fitted atthe rear of the unit and is connected in series with the power supply switch band heater overheat cutout mechanical a
32. 424138 issue 04 or later LINE IN 7 4 BN NEUTRAL IN 424151 ch C CENTRAL EARTH ES 15 MAINS MANUAL RESET CUTOUT HEATER CUTOUT OVERHEAT NEON CENTRAL EARTH POINT FRONT PANEL DISPLAY SWITCH ASSEMBLY 424140 MAINS TRANSFORMER 424161 PRINTER Power loom 390467 RELAY BOARD 424138 J1 CONTROL BOARD 424136 64 Fig 3 5 SES 2000 vacuum autoclave System Circuit Diagram Sheet 1 Page 38 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 3 PART 3 MAINTENANCE 5 7 GG rees HEATER P 12 VACUUM PUMP NI ENCLOSURE FAN CONDENSOR GN YW DISCHARGE VALVE VACUUM VALVE FILL VALVE AIR VALVE DOOR LOCK STEAM BLEED L BE CEP ME c Ocgo ocgd4eom SCREEN me CHAMBER SENSOR 1ooROIN GN CENTRAL EARTH POINT C E P RELAY BOARD 424138 NOTE 1 WIRE COLOURS ARE ABBREVIATED BY FIRST AND LAST LETTERS PRESSURE TRANSDUCER e g RD RED WE BK WHITE BLACK 2 NUMBERS ABOVE NEAR WIRE COLOURS ARE THOSE PREPRINTED ON THE ACTUAL CABLE Fig 3 5 SES 2000 vacuum autoclave System Circuit Diagram Sheet 2 ST SM45g Page 39 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE ESCHMANN PART 3 MAINTENANCE Note Not all screws P d are indicated 2
33. Cabletie 1 E 424145 Mains loom 1 424146 Signalloom 1 12 424157 Pressure transducer 1 Not shown See note on page 41 Continued ST SM45g Page 47 of 53 Part 4 SES 2000 Vac LS3 AUTOCLAVE ESCHMANN PART 4 ILLUSTRATED PARTS LIST PARTS LIST 3 HEATER AND PROCESS CONTROLS Item No Part No Description Qty Recommended Standard Long Per Holding Per Unit Unit Per Year 13 301127 Neon overheat 1 14 490306 Neon plate 1 i 301862 Spacer 7 15 380000 Switch ON OFF 1 1 16 424308 Fan assy 1 17 424258 Support door lock fan 1 710210 Screw soc hd M4 x 12 4 ii 696583 Grommet 1 18 424162 Fan assy 1 710129 Screw soc hd M4 x 16 4 ii 307163 Washer shakeproof M4 4 19 427035 Lock pressure 1 4 307218 Bolt M5 x 10 2 d 427060 Bolt interlock 1 20 424140 Front panel PCB 1 301796 Spacer 10 i 301862 Spacer 6 21 424138 Relay board see Appendix B 1 307152 Screw hd M4 x 6 2 S 390371 Fuse 250V Pump 1 1 301797 Fuse T2A 250V Fan F2 1 1 696207 Fuse T3 15A 250 F1 Txr 1 1 i 390467 Printer lead 1 22 424239 Temperature sensor band heater 1 1 d 424228 Chamber fitting sensor 1 23 424240 Sensor chamber temperature 2 1 24 424250 Sensor pocket 1 25 424260 Spring 1 26 424174 Clamp plate 1 695776 Cable tie A R 27 424161 Transformer 1 T 424245
34. Fig 2 3 Autoclave Pipes and Valves Page 14 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 2 PART 2 DESCRIPTION Note Some autoclaves will have a different pump to that shown See maintenance section and parts list for pump replacement details SI aS 23 1 Heating element 9 ON OFF switch Transformer 2 Mains fuses 10 Enclosure fan Band heater 3 Mains cable 11 Condenserfan Control board 4 Microswitch 12 Solenoid door lock Printer 5 EMCboard 13 Frontpanelboard Manual reset overheat cut out 6 Choke 14 Solid state relay board Pressure test port 7 Pressure transducer 15 Bandheater temperature sensor 23 Thermocouple entry port 8 Overheatwarninglamp 16 Chamber temperature sensors 24 Band heater overheat cut out 25 Bulb for Manual Reset 21 see Appendix B Fig 2 4 Autoclave Heater and Process Controls ST SM45g Page 15 of 53 Part 2 SES 2000 Vac LS3 AUTOCLAVE ESCHMANN PART 2 DESCRIPTION Le VACUUM CONDENSER VACUUM SOL VALVE PUMP gt STEAM BLEED STEAM BLEED SOL VALVE VALVE L Ave PRESSURE CHAMBER TEST PORT PRESSURE L DOOR LOCK PRESSURE m TRANSDUCER WATER WATER DISCHARGE FILTER SOL VALVE WATER FILL SOL VALVE 9 06 GB 09 AIR IN NON RETURN BACTERIAL SOL VALVE VALVE FILTER GIS WATER FILTER NUMBERS SHOWN _ REFER TO FIG 2 3 OR 2 4 RESER
35. IST PARTS LIST 3 HEATER AND PROCESS CONTROLS Item No Part No Description Qty Recommended Standard Long Per Holding Per Unit Unit Per Year 1 412012 Heating element 230V 2kW 1 416220 Heating element 230 2 75kW 1 416149 Clamp thermostat sensor bulb 1 2 490020 Manual reset overheat thermostat 1 3 380001 301890 Holder fuse 2 380003 301871 Fuse 230V 10 15A 2 2 4 301162 Door Microswitch Assy 1 1 ii 307231 Washer nylon 1 427104 Actuator lever assy 1 380044 Washer nylon 1 T 427022 Leaf spring 1 e 427020 Lever 1 307247 Screw hex hd M3 x 8 1 307159 Washer shakeproof M3 1 id 307157 Nut M3 1 5 480314 Sensor assy water level 1 301806 Washer shouldered 1 1 301807 Bush silicone 1 1 425124 Bush insulation 1 1 425121 Water level body 1 307044 Nut 2 1 d 307061 Washer 2BA 2 307112 2BA shakeproof washer 2 6 380012 Terminal block 1 S 307249 Screw pan hd M4 x 8 13 7 710894 Cable clamp 1 490080 Mains cable 230V UK or 1 i 490081 Mains cable 230V 1 j 710897 Nut 1 307163 Washer shakeproof M4 19 307161 Nut 4 7 693640 Metway Clamp 2 307215 Washer brass 4 8 424156 EMC board see Appendix C 1 713932 Spacer 2 9 424190 EMC cover 1 10 307231 Nylon washer 2 380034 Cable saddle 8 380033
36. MANN Remedy a Recalibrate para 57 onwards b Check sensor fitted correctly or fit new sensor para 14 and recalibrate para 57 onwards a Test valve using Engineering Mode para 40 Replace if faulty para 15 b Check connections to discharge valve Strip pipework and clean Replace control board para 9 Clean or replace filter para 24 Check supply to autoclave Avoid overloading see Tray loading in Technical Data section See Fault 13 c and e Repair or fit new vacuum pump para 20 Check and repair Switch off power wait for approx 5 seconds and switch onagain Fit new control board para 9 Check local supply conditions Check supply plug wiring and power cable for breaks Carry out error cancellation para 53 then remove load from chamber Ensure load is conditioned dry before restarting appropriate cycle Continued ST SM45g ESCHMANN Fault 17 Overheat warning lamp illuminates 18 Pressure display reads too high or too low 19 Door stiff to rotate open 20 ERROR 10 Insufficient first vacuum pulse ST SM45g SES 2000 Vac LS3 AUTOCLAVE PART 3 MAINTENANCE Possible Cause Band heater overheat thermostat operated Heater element overheat thermostat operated Incorrectcalibration Faulty electrical connection Doormechanism requires lubrication Door seal mating surfaces sticking Chamber pressure
37. RNING When replacing parts during maintenance procedures ONLY use parts supplied by Eschmann Equipment or the safety of the autoclave may be affected 7 Ensure that routine servicing is carried out at regular intervals by either Eschmann trained personnel or suitably trained engineers only otherwise the warranty could be infringed 8 Keep the Instructions for Use and this Service Manual readily accessible for reference purposes prior to and during operation cleaning and servicing of the autoclave CAUTION In common with other systems containing static water reservoirs water used in this unit can become contaminated over a period of time or following an aborted cycle and should be treated as a potential risk of infection Page 6 of 53 Note When sterilizing lubricated dental handpieces the reservoir water should be changed every week to prevent contamination of the door seal and other rubber components used in the pressure system 9 Eschmann recommend filling the reservoir with Sterile Water for Irrigation This is low in dissolved solids and has a low microbial count In the U K the Department of Health recommend that Sterile Water for Irrigation is used in bench top Autoclaves NHS Estates document HTM2031 If Sterile Water for Irrigation is not being used then Eschmann strongly recommend the use of either distilled water deionized water purified water or water treated by the reverse osmos
38. Reservoir Water filter 37 To remove and replace the water filter proceed as follows a Remove the reservoir lid and carefully pull the flexible tubing and filter up and out through the reservoir top without disconnecting the tube from the top elbow ST SM45g b Whilst gripping the tube pull off the old filter and replace with new filter Part No 424261 by pushing it onto the tube c Reposition tube and filter back inside the reservoir ensuring the tube is not kinked and the filter is positioned inside the condensing coil Vacuum pump maintenance 38 Pump maintenance depends on the type of vacuum pump fitted Autoclaves with the piston pump shown in Fig 3 6 should have this changed if problems with it are encountered to the diaphram type The piston pumpis no longer available and akit part number 111372 shouldbe obtained This kit includes all the parts and information required to replace and fit a diaphram pump Autoclaves with the diaphragm pump as shown in Fig 2 3 can be refurbished as detailed in the following section Diaphragm vacuum pump as shown in Fig 2 3 Maintenance of the diaphragm vacuum pump entails the replacementofthe Diaphragm Valves and O ring in both heads Part No 759584 proceed as follows a Disconnectthe two pipes one on each head items 9 and 16 of Figure in Parts List 2 at the olives leaving the interconnecting pipe between heads attached b Removetheheadbolts andliftoffthe h
39. Strap securing 1 9 424171 Nuts thumb nylon 14 2 744039 Cable tie 1 d 424245 Strap 1 2 ji 710492 Screw csk hd M3 x 10 1 490292 Ribbon cable 1 425144 Earth wire 1 d 695777 Cable tie 2 380072 Ferrite clamp 1 28 424164 424182 Band heater 1 29 424259 Cover band heater 1 307046 Nut 1 Not shown was T2A T3 15A now prefered Continued Page 48 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 4 PART 4 ILLUSTRATED PARTS LIST PARTS LIST 3 HEATER AND PROCESS CONTROLS Item No Part No Description Qty Recommended Standard Long Per Holding Per Unit Unit Per Year 30 424424 424425 Control PCB A 1 id 490334 Ribbon cable printer 1 i 380073 Ferrite clamp printer 1 695777 Cabletie 1 31 301739 Safety pressure relief valve 1 1 l 427078 Safety valve chamber fitting 1 424368 Sensor cover 1 32 490025 Electric door bolt solenoid 1 712924 Washer nylon 2 ii 427060 Interlock bolt 1 307152 M4x 6 pan head screw 2 307163 M4 shakeproof washer 4 307249 M4x 8 Pand head screw 2 33 759647 Band heater overheat cutout 1 424444 Calibration spring clip 1 Miscellaneous spares fittings 34 490473 Double T piece 35 490449 Y fitting 36 380008 Elbow 37 490472 Cross piece assembly 380020 Ya Plug i 391132 1 Washer 427031 Chamber fittin
40. VOIR Fig 2 5 Sterilizing System Schematic Diagram Page 16 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 3 PART 3 MAINTENANCE FUSES Fig 2 4 1 The autoclave is protected by five fuses Two mains supply fuses are fitted on the rear cover of the autoclave Fig 2 4 item 2 Three more fuses are fitted to the solid state relay board Fig 2 4 item 14 All fuse ratings are given in the TECHNICAL DATA section FAULT DIAGNOSIS 2 Anumber of typical faults which could occur their possible causes and how to remedy them are listed below For maintenance procedures refer to Parts Replacement and Adjustment Note Cross references in the Remedy column e g para 10 refer to paragraphs in the Parts Replacement and Adjustment section that follow later in Part 3 WARNINGS Switch off and disconnect mains power supply before removing the autoclave cover or doing maintenance procedures During certain procedures mains voltage may have to be present with the cover removed and extreme care should be taken to avoid contact with mains voltage Check that chamber is at atmospheric pressure before opening the door Should the door be opened beware of possible very hot water or steam escaping from the chamber Fault Diagnosis Table Fault Possible Cause Remedy 1 Nothing happens when power a Mains supply failure a Check mains supply also switched on No display plug and supply cable for loose connections or
41. Vac at 50 60Hz Nominal Loading 230V 2kW 8 74 Chassis F10A 250V x2 Part No 380003 Fuses Relay board F5A 250V x1 T2A 250V x1 was x 2 see Parts List 3 T3 15A 250V x1 Safety standards EN61010 1 1993 EN61010 2 041 1996 Sterilizing Data for software version 4 xx or later Sterilizing time At 134 137 C 3 mins 15 sec At 121 124 C 15 mins Typical overall cycle 134 C Unwrapped time D indicates 20 minutes drying included 134 C Unwrapped 35 minutes D 134 C Wrapped 53 minutes D 134 C Porous 63 minutes D 121 C Unwrapped 28 minutes 121 C Unwrapped 42 minutes D 121 C Wrapped 62 minutes D 121 C Porous 70 minutes D Note Overall cycle times may vary depending on machine and loading conditions Nominal Operating pressures 134 C cycle 3 14 bar abs 121 C cycle 2 11 bar abs Water reservoir capacity 3 5 litres Page 4 of 53 Dimensions Autoclave Chamber Porous Load basket Trays Width 460mm Length 650mm Height 360mm Feet spaced to fit 600mm worktop Diameter 200mm Length 348mm max Width 156mm max Length 280mm Height 93mm Width 183mm Length 282 6 Height mm Tray Loading Chamber capaciiy Weight approx Net Shipping Symbols V 9 3 EE 1 5 kg per tray 10 6 litres 45 7kg 50 0kg For use with alternating current Caution Hot Surface Caution refer to accompanying documents Porous load
42. age 23 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE GG ESCHMANN PART 3 MAINTENANCE Control Board Fig 2 4 item 19 9 Toremovecontrolboard pull on handle provided and slide control boardon tracks Replacementis the reverse ofthe removal procedure but ensure that board locates firmly in the solid state relay board Note 1 When a new control board is fitted it will be necessary to recalibrate itto suitthe temperature sensor fitted in the machine see Calibration Procedure para 57 onwards Note 2 When ordering a new control board part number 424424 for standard or 424425 for long it is important to determine what version of software is driving the machine The Version state of software for each particular Autoclave will be displayed momentarily upon switching ON the Autoclave and on later versions of the control board it is also printed on the EPROM on the board Pressure Door Lock Fig 2 3 item 14 10 To remove pressure door lock for adjustment or replacement proceed as follows From front of pressure door lock remove screw slotted locking bolt Detach plumbing connection from rear of lock body then slacken the two hexagon headed screws in the lock housing to release lock body Clean old locking compound fragments out of threaded hole in piston if re fitting original lock unit To fit the original or anew pressure lock unit proceed as follows a Apply a drop of thread lock Part No 306234 to female thread only
43. anged at the autoclave service interval or at least every three months Discharge Line Filter Fig 2 3 item 12 and Fig 3 2 24 Thefilterinthe discharge line should be removed and cleaned approximately every 12 months as follows Ensure allwater has been discharged from chamber back into the reservoir and switch off the autoclave b Remove filter assembly from discharge line disassemble components and rinse clean all parts using distilled water only c Allow components to dry then reassemble filter assembly Ensure that copper washer is correctly positioned with bevel side against filter body If washer is damaged renew it Pressure Transducer Fig 2 4 item 7 25 Remove the transducer as follows a Releasetheplumbing connection atthe bottom end of the pressure transducer b Remove the pressure transducer c Release the electrical cable from the securing ties and disconnect from the relay board d Refitting is the reverse of the removal procedure On completion re calibrate the autoclave see para 57 onwards Solid State Relay Board Fig 2 4 item 14 26 See Appendix before changing the Solid State Relay Board Remove the relay board as follows a Remove control board see para 9 b Removetransformer see para 8 c Ifa printer is fitted remove fixing screw and move printerforward d Disconnectrelay board electrical connections e Remove four nylon thumb nuts tilt the relay panel away fromthe d
44. autoclave on l Release switches after a bleep is heard b Check that display shows SET DATE AND TIME Then press switch SW1 for YES c Check that display shows MONTH 01 i Press and hold switch SW1 Observe that numbers change to 02 03 etc through 12 Also note that pushing and holding switch SW2 makes the number decrease ii Use switches SW1 and SW2 to set the number corresponding to the month 01 January etc Push switch SW3 to accept d Check that display shows DAY 01 Use switches SW1 and SW2 to display the day of the month Note that the computer will prevent entry of dates such as 31 November and will allow for February with respect to leap non leap years Push switch SW3 to accept the day Page 32 of 53 e Checkthat display shows YEAR 00 Use switches SW1 and SW2 to set any year from 00 to 99 Push switch SW3 to accept year f Check that display shows HOURS 00 Use switches SW1 and SW to set the hour the system uses a 24 hour clock Push switch SW3 to accept the hour g Checkthat display shows MINS 00 Use switches SW1 and SW to set the minutes Push SWS to accept minutes Note Internally the seconds are setto zero when switch SWS3 is pushed Setting Cycle Counter Fig 3 3 52 Set cycle counter as follows a Checkthat display shows RESET COUNTER i Push switch SW1 for YES or SW2 for NO ii If SW1 YES is pushed display will change to RESET and cycle counter will re
45. b Switch SW2 Press to check DISCHARGE valve solenoid valve and door bolt solenoid Switch SW3 Press to check water heater heating elementis energized as indicated by red LED D6 illuminated on the relay board d Switch SW4 Pressio check WATER FILL solenoid valve e Switch SW5 Press to check that band heater has energized as indicated by LED D5 on the relay board illuminating intermittently f LED to the left of SW1 illuminates to indicate that door interlock lever has operated g LED 2 to the left of SW2 illuminates to indicate that water level sensor circuit is operative h LED 3 to the left of SW3 illuminates when the reservoir is and is off when the reservoir is empty 43 To exit Engineering Mode switch off power to the autoclave wait 10 seconds and then switch it on again Machine Set Up Mode 44 Oncestarted the Machine set up procedure mustbe completed in full Do not switch off the power before it has been completed If a mistake is made switch off the power and start again On autoclaves fitted with a printer aprintout showing the main items selected within the set up procedure will be printed when the procedure has been completed 45 Throughout the Machine set up procedures the following switches are used see Figs 3 3 and 3 4 Switch 1 SW1 Indicates Yes or Up Switch 2 SW2 Indicates or Down Switch SW3 Indicates Accept Switch 4 SW4 T
46. c tions satisfactory para 26 Also see Appendix B Fit new band heater para 34 anan lI e Reservoir Assembly Fig 2 2 Item 16 Removal 5 Remove reservoir assembly as follows Remove reservoir cover Pull off silicone tubing from manifold connection Disconnectdischarge andfilltubes from the manifold ensuring that the manifold fittings do not rotate whilst releasing the compression nuts d Disconnect reservoir float sensor electrical connections e Withdraw reservoir and manifold from autoclave whilst guiding the drain tube up through the chassis floor and dividing panel Cleaning 6 Clean reservoir and manifold as follows Separate the manifold and reservoir b Wash the manifold and reservoir in a weak solution of detergent and tap water Rinse all cleaned components thoroughly with tap water to remove any residual detergent Allow components to dry d Assembly 7 Assemble and refit reservoir assembly and fill with distilled water Clean or replace water filter Note If fitting the drain tube to the reservoir connection dip the end of the tube in warm water first to soften it Transformer Fig 2 4 item 17 8 Detach the transformer connections noting the position of each one Remove cable tie and two nylon thumb nuts then withdrawtransformer The replacement transformer shouldbe an identical unit rated at 50VA fitreplacementtransformer reversethe removal procedure P
47. chamber seating and refit new components sensor insulation bush silicone bush and shouldered washer by the reverse of above Manual reset cut out Fig 2 4 item 21 amp 25 36 Toremove and replace the Manual reset overheat cut out switch and attached bulb proceed as follows a Ensure mains power is removed from the unit remove cover and remove two spade connectors from the switch noting the terminals each was connected to b Releaseswitchfromthe mounting panelby removing two retaining screws c Freethebulb inside chamber by releasing the clamp around bulb and heater element d Remove capillary tube and bulb through chamber wall by undoing the tubes captive nut from the end of the thermal clamp e Releasecapillary tubing from all constraints noting the path taken f Replace new switch and bulb by reversing the above and noting the following i Apply PTFE tape around the captive nut on the tube before fitting and allow the tube to turn whilst tightening DO NOT OVER TIGHTEN ii Reposition clamp and bulb approximately 50mm in from the back of the chamber around the right leg ofthe element Lay the bulb into the clamp alongside the element and fold the clamp legs over to trap the bulb with a large pair of pliers iii Ensure the bulbis held tight in the clamp and that the tube is routed away from the water level sensor and not touching it g Test new switch and bulb and perform a leak test para 55 onwards
48. cial operating modes see Fig 3 3 for SW1 4 and Fig 3 4 for SW6 Switch 6 SW6 Machine set up mode Switches 1 and 2 SW1 SW2 Engineering mode Switches 1 and 4 SW1 SW4 Clock set mode P button SW5 Function test Door must be CLOSED Switches 2 3 and 4 SW2 SW3 SW4 All cycles temporarily enabled for selection of calibration cycle Switches 1 and 6 SW1 SW6 Test operation of the Air in solenoid valve Switches 2 and 6 SW1 SW6 Test operation of the Steam bleed solenoid valve Note When setting the clock use the SW1 and SW4 combination not the set up procedure If the set up procedure is used the complete set up procedure will have to be done Engineering Mode CAUTION Inbuilt protection by the computer does not operate in Engineering Mode 41 Toenterthe Engineering Mode proceed as follows Switch off power and wait 10 seconds Push and hold switches SW1 and 5 2 Fig 3 3 and switch on power c Releaseswitches SW1 and SW2 whenthe bleeper sounds and the message ENGINEERING MODE shows on the display Both fans will also start 42 n Engineering Mode the programme selector switches SW1 to SW4 toggle on off sequentially Switch SWboperatesina press and hold mode and programme indicator LED s operate as follows a Switch SW1 Press to check vacuum pump and AIR OUT solenoid valve A red LED D7 should also be illuminated on the relay board Page 30 of 53
49. cle type e g 134 C no drying Time and date started At hh mm ss On dd mm yy Counter reading Five digits with leading zeros Time temp pressure information Information prefixed by a three letter code that describes the stage reached during the cycle Cycle ended message Cycle Stage Abbreviations TPV End of first or second vacuum pulse TPP End of first steam pulse TSS Start of sterilization TSE End of sterilization TDS Start of drying phase TDE End of drying phase Error and Error messages If an error occurs during the cycle it is recorded with date and time on the printout and the message CYCLE FAILED Errors are designated by error codes as detailed in Section 2 Error Code Table N B These error codes will generally require investigation by an Eschmann trained engineer Printer Front Panel Controls Fig A1 The following front panel controls are provided a b Door Latch To open door A1 1 push door latch 1 2 sideways direction of arrow and pull door open to expose paper roll A1 4 Paper Feed Button Inoperative until the sterilizer mains on off switch is on Press lower part of paper feed button A1 3 to activate paper feed which will continue for as long as the button is pressed Paper Roll Renewal Figs A1 and A2 Caution The quality and size of paper rolls used in the printer can
50. e 2 307271 Washer nylon 3 427007 Spindle assy 1 d 427064 Washer anti friction 1 424124 Knob door 1 1 i 301872 Washer nylon 1 307202 Screw 1 307215 Washer plain 4 A R 424179 Circlip 2 2 424118 Spindle assy 1 P 307231 Nylon washer 1 380044 Thick nylon washer 1 307157 Nut M3 1 710592 Screw hd M3 x 16 1 ii 427020 Lever 1 307247 Screw hex hd 8 1 307159 shakeproof washer 1 32 424280 Door assy pressure 1 33 427008 Link 1 307233 Circlip 3 3 307269 Washer spring 1 34 424238 Sealretaining rim 1 35 427037 Seal 1 1 36 427015 Retaining disc 1 37 427090 Washer seal 1 1 38 307232 Nut Aerotight 1 1 39 424114 Wire 1 40 424103 Flag 1 B 424178 Pushnut 1 712924 Nylon washer 1 41 424126 Plate escutcheon 1 1 42 424119 Cover door 1 n 427089 Spacer brass 4 P 307028 Washer shakeproof M6 4 307253 Nut M6 4 43 424125 Knob outer door 1 1 44 490291 Printer 1 E 424242 Printer bracket 1 307249 MA x 8 Screw 1 P 307163 M4 shakeproof washer 1 Now replaced by M6 spring washer 710721 and M6 nut 710372 A Not shown See note on page 41 ST SM45g Page 43 of 53 Part 4 SES 2000 Vac LS3 AUTOCLAVE PART 4 ILLUSTRATED PARTS LIST PARTS LIST 2 PIPES AND VALVES
51. ead assemblies together If head removal is difficult side blows from asoft headed mallet may be required to assist separation Removediaphragm retainer plate screws and lift off retainer plates remove diaphragms and discard d Place new diaphragms on con rod tops replace retainer plate and screws using Loctite 242 Part No 306039 on threads and torque to 2 5Nm Remove valve plate from the head assembly and discard valves and O ring f Fitnewvalves and rings replace valve plate and screws using Loctite 242 and torque to 2Nm g Position one of the diaphragms at the mid stroke position and ensure that the diaphragm is seated correctly h Replacethe head andhead bolts andtorquein across pattern to 3Nm re torque the first bolt to each head i Reassemble the autoclave and test If an abnormal noise is heard obtain assistance from the Eschmann After Sales Service Department details inside front cover Page 29 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE GG ESCHMANN PART 3 MAINTENANCE Display Board Fig 2 4 item 13 39 Remove the display board as follows a Remove the solid state relay board see para 26 b Disconnect display board electrical connections c Remove nylon thumb nuts and remove the display board Refit the display board in reverse removal sequenc SPECIAL OPERATING MODES 40 The following switches held pressed when power is switched ON will initiate the following spe
52. ear chamber clamp band and sliding the tag of the sensor cover under the clamp band from the rear of the autoclave It is positioned on the dividing panel side of the chamber with its top edge 1cm short of the top test port Retighten clamp band after positioning Band heater Fig 2 4 item 18 34 To remove and refit the band heater proceed as follows a Remove band heater temperature sensor and retaining clamp para 30 b Remove heater connections and the spade connections to the overheat thermostat c Release heater clamp bolts and carefully slide heater off the chamber vertically by allowing the heater to open up into a U shape Refit new band heater by reversing the above use threadlock 670650 on screws and referto para 30 for details on how to refit the temperature sensor Note When a new band heater is fitted it must be recalibrated see calibration para 57 onwards Chamber Water Level Sensor 35 Toremove andrefitthe chamber water level sensor see Figure on page 46 item 5 proceed as follows a Removenutand washer retaining the wire terminal andthe nut holding the sensor in place atthe rear of the chamber ST SM45g SES 2000 53 AUTOCLAVE Part 3 PART 3 MAINTENANCE b Remove washer and plastic shouldered washer from the outside of the chamber and the sensor insulation bush and silicone bush noting orientation of all components from inside the chamber c Clean internal
53. er roll see above b Support door with left hand and press upwards with right hand on bottom of printer mechanism chassis Fig A3 and separate chassis from door Caution Do not pull printer mechanism chassis from door until catch has been released C Leaving printer door fully open expose printer mechanism and ribbon cartridge Fig A4 d Pinch the end of ribbon cartridge marked PUSH A4 1 and remove cartridge e Fit new cartridge checking that left hand side of cartridge is correctly located on drive shaft and carefully press cartridge into place f Ensure ribbon is taut If necessary tighten ribbon by turning faceted disc A4 2 on cartridge clockwise using finger or fingernail g Fit paper roll as described above Setting Date and Time Set the date and time as detailed in Section 3 para 50 Spares Pack A spares pack is available containing 5 paper rolls and 2 ribbon cartridges is available from Eschmann Equipment under catalogue number 87 034 05 Fig A3 Ribbon Cartridge Fig A4 Ribbon Cartridge In Position ST SM45g Page 51 of 53 ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Appendix B APPENDIX B PCA 424138 and Relay Assembly 112507 modification November 2004 SS Relay Board 424138 issue 03 was modified in November 2004 to issue 04 424138 issue 04 has an attached loom that connects to a new Solid State Relay Assembly 112507 Solid State Relay Assembly 112507 switches power for the Immersion Heater and the Band Hea
54. es Fig 2 3 items 1 2 and 3 15 Toremove and replace valves proceed as follows a Disconnect electrical connections from valve and release plumbing connections at each side b Note carefully the orientation of the valve parts to ensure correct reconnection Connection identified as 2 on valve body should always be connected to the chamber side Remove pipework from valve then remove the valve Note On discharge valve remove the securing screws d Examine the valve If only the valve coil has failed e g short circuiting it can be renewed The valve can also be dismantled and cleaned see Note preceding para 15 e Fit new or repaired valve in the same way as the original one making connections as noted 15b Air Inlet Solenoid Valve Assembly Fig 2 3 item 5 16 Theair inlet solenoid valve is removed and refitted as an assembly as follows a Disconnect the two electrical connections to the valve b Support the valve and undo 1 4 x 5 16 BSPT stud coupling nut A Fig 2 3 c Withdraw valve assembly and remove the silicon tube connecting the valve to the bacterial filter d Remove the valve assembly from the autoclave Page 25 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE GG ESCHMANN PART 3 MAINTENANCE e Examine the valve assembly If only the coil has failed it can be renewed The valve can be also dismantled and cleaned see Note preceding para 15 and note i The non retur
55. evers 2 and 5 apart to ensure that any slack between the flats onthe spindle and lever is in its worse condition ST SM45g SES 2000 53 AUTOCLAVE Part 3 PART 3 MAINTENANCE m Set microswitch actuator lever 5 by closing the door andinserting a0 125mm shim between switch body and head of striker screw 6 Turn door knob to lock door Adjust striker screw 6 until screw head touches shim and tighten locking nut n Open door to remove shim then close door and check that microswitch 10 operates correctly Solenoid Door Lock Fig 2 4 item 12 13 Maintenance procedures will depend upon whether the malfunction is mechanical e g bolt or return spring sticking or due to solenoid unit failure Proceed as follows a Toremovelocking bolt compress the spring with suitable spring compressor and open the autoclave door to provide access to the slotted bolt head Screw b Gripthe solenoid plunger forward ofthe E clip and insert a screwdriver in the slot of the locking bolt head to remove the locking bolt c Beforerefitting the locking bolt apply alittlethreadlock Part No 306234 to the thread of the solenoid plunger d Refit the nylon washer in the correct position e Toremove the solenoid unit proceed as in b and c and detach the electrical connector from the solenoid coil then remove the solenoid bracket fixing screws from the chamber head ring Fit replacement solenoid unit by
56. ew water fill valve para 17 b Strip and clean water discharge valve or fit a new one para 15 c Fit new chamber water level sensor para 35 Checkterminations Clean mating surface of gasket around door with a soapy cloth If leakage persists replace door seal para 19 42 a Fit new relay board para 26 Also see Appendix B b Fit new heater if resistance of element when cold is not approx 30ohms short auto clave or 200hms long auto clave para 18 c Fit new control board para 9 Continued Page 19 of 53 Part 3 Fault 12 Temperature differs from measured value and display shows Err 6 7 8 or 9 13 No discharge of steam water at end of cycle 14 Cycle time much longer than usual 15 Unusual display when first switching on power 16 Display shows POWER FAILURE Page 20 of 53 SES 2000 Vac LS3 AUTOCLAVE PART 3 MAINTENANCE Possible Cause a Recalibration required b Chambertemperature sensor fault a Discharge valve fault b Wiring fault c Blockage in discharge line d Control board fault e Dischargeline filter blocked a Lowmains voltage b Autoclave overloaded c Slow discharge at end of cycle d Faulty vacuum pump e Leak in pressure system Control board failed to re set properly b Control board fault a Temporary mains failure during cycle GG ESCH
57. gs nut i 427041 Copper washer for chamber fittings i 427030 Chamber fittings top and bottom 424186 Basic valve assembly Printer lead only required for Relay Board 424138 printed Iss D Issue D or later These parts are not required if the piston pump is or has been retro fitted n Not shown i NOTE Printer lead Part No 390467 is required for Relay Board 424138 printed Iss D Issue D or later When ordering a new control board part number 424424 for standard or 424425 for long it is important to determine what version of software is driving the machine The Version state of software for each particular Autoclave will be displayed momentarily upon switching ON the Autoclave and on later versions of the control board it is also printed on the EPROM on the board New boards will be supplied with software version 5 0 or later If an earlier version of software is fitted to the Autoclave then the EPROM from the original Control PCB must be fitted to the new Control PCB Also see Information sheet No 00010699 supplied with the new board ST SM45g Page 49 of 53 ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Appendix A APPENDIX A Autoclave Printer INTRODUCTION This Appendix contains operating and routine maintenance information for the autoclave printer Printer output information Machine SES Vacuum 53 Serial number Nine character code Cy
58. harge valve is used atthe end of the sterilizing cycle to allow water and steam vapour from the chamber to pass back into the reservoir The valve is electrically operated from a 24V d c supply generated and signalled fromthe SSR board Discharge Line Filter Fig 2 3 item 12 Prevents debris from the chamber entering and fouling the water discharge valve Steam Bleed Solenoid Valve Fig 2 3 item 2 The steam bleed solenoid valve operates in conjunction with the steam bleed valve Steam Bleed Valve Fig 2 3 item 15 The steam bleed valve is connected in series with the steam bleed solenoid valve to bleed steam from the chamber during the 121 C cycles It contains a ball and spring which allows air displaced by the steam generated in the chamber to pass into the reservoir Once steam starts to pass the ball then lifts and seals A small bleed remains however and it is quite normal for small quantities of steam to escape into the reservoir throughout the cycle Safety Valve Fig 2 3 item 16 The safety valve is fitted on the chamber tee piece at the rear of the chamber andis factory set to release pressure from within the chamber Itis a primary safety device and must not be readjusted Air In Solenoid Valve Fig 2 3 item 5 The airinlet valve controls the admission of bacteriologically filtered air to the chamber during the drying phase A non return valve prevents flow from the chamber to the bacterial filter to
59. he chamber pressure Q Control Board Fig 2 4 item 19 The control board interfaces with the relay board and front panel board to control every aspect of management of the autoclave The main features are Twomicrocontrollers U1 and U12Idents onPCB which receive information from the frontpanel and allthe sensors temperature 3 off pressure door interlock chamber water level reservoir level If any errors are detected they are shown on the display and printed if a printer is fitted as error codes see Part 2 para 28 and 29 Message memory U13 in four variants covering all the main languages spoken by Eschmann customers Trimmer potentiometers for calibration of the band heater and temperature pressure channels Engineering switch for set up and calibration modes see specialoperating modes page 30 Outputs from the control board control the heaters pump and solenoid valves via the relay board interface Front Panel Board Fig 2 4 item 13 This board incorporates the vacuum fluorescent display ST SM45g programme select and cancel switches and programme indicator LEDs It interfaces with the control and relay boards via a 10 way ribbon connector Pressure Transducer Fig 2 4 item 7 The pressure transducer monitors the pressure in the chamber and generates chamber pressure signals for cycle monitoring control and display Printer Fig 2 2 item21 The printer if fi
60. hefourth Down control button Switch 5 SW5 The fifth Down control button Switch 6 SW6 The button on the bottom outer corner of the control board Fig 3 4 D UU UL Set Up Procedure 46 The machine must be set up as follows WARNING During the following procedure the autoclave cover is removed and mains voltage is exposed ST SM45g SES 2000 Vac LS3 AUTOCLAVE Part 3 PART 3 MAINTENANCE a Set mains power on off switch to oft 0 Press andhold switch SW6 oncontrol PCB Fig 3 4 and set mains power on off switch on I Continue holding switch SW6 until MACHINE SET UP is displayed then release it Makesure thatthe two fans one atthe rear and one at the side of the autoclave are working d After a short time SES VACUUM 20007 will be displayed Press switch SW1 Yes e Display will show STANDARD CHAMBER If the autoclave has a Standard chamber press SWI Yes Ifthe autoclave has a long chamber press SW2 and display will change to LONG CHAMBER Press SW1 Yes f Display will change to PRINTER If a printer is fitted press SW1 Yes or if a printer is not fitted press SW NOTE Do not press SWI if a printer is notfitted as this may inhibit special functions always press SW2 if a printer is not fitted Setting the Autoclave Serial Number Fig 3 3 Note This procedure is only applicable to units fitted with aprinter
61. in hexagon shaped piston then fitlockbody into lock housing on chamber neck ring and secure it with the two hexagon headed screws use thread lock part number 306033 on threads b Attach and secure plumbing connection Apply a smear of silicone grease Part No 306055 to shaft only of locking bolt avoiding the thread d Insertlocking bolt into front of lock body and screw it into piston thread until bolt head stands 1 2mm clear of cabinet front plate Ensure that bolt is free to move in and out easily Ensure locking boltis fully engaged with the door at its maximum extension Note Do not try to repair a leaking or otherwise unserviceable door lock Steam Bleed Valve Fig 2 3 item 15 11 The steam bleed valve is fitted to the steam bleed solenoid valve at the rear of the sterilizing chamber To remove the valve a Disconnect flexible PTFE pipe from steam valve Page 24 of 53 b Remove steam bleed valve from solenoid elbow fitting c Replacementisthe reverse ofthe removal procedure When fitting replacement valve use PTFE tape Part No 301600 to make a leakproof joint Note It is recommended that a valve suspected of unsatisfactory performance is renewed Door Interlock Microswitch Fig 2 4 item 4 12 The door interlock microswitch is operated by an actuator lever To remove and dismantle the microswitch actuator lever proceed as follows the numbers in brackets refer to the relevant parts in Fig 3 1
62. is process These types of water are low in dissolved solids and can help reduce the effects of tap water detailed below DO NOT USE TAP WATER this is high in dissolved solids and can deposit lime scale block filters and cause damage to the pressure vessel Eschmann also recommend that the reservoir is drained allowed to dry and is refilled on a weekly basis with the type of water detailed in a or b above At every service interval the reservoir must be removed be thoroughly cleaned and dried and then refilled This will reduce the build up of contaminants in the water that may cause blocked filters and or damage to the pressure vessel Your local Health Authority may suggest that you change the reservoir water more frequently Eschmann advise you to follow your local Health Authority s recommendations also see PART 3 MAINTENANCE para 5 to 7 Fig 1 SES 2000 Vac LS3 autoclave ST SM45g SES 2000 53 AUTOCLAVE Part 2 PART 2 DESCRIPTION GENERAL Fig 1 1 1 The autoclave is a portable steam unit heated by electric elements For sterilization of porous loads a vacuum is created in the chamber The unit is supplied to suitthe mains electrical supply shown in TECHNICAL DATA pages 4 and 5 2 autoclave is electronically controlled and has eight sterilizing programmes 134 C Porous load with drying 134 C Wrapped load with drying 134 C Unwrapped load with dr
63. it new microswitch para 12 Continued ST SM45g Fault 7 Safety valve leaks See also Fault 8 8 Safety valve operates even though temp is below 136 C See also Fault 7 9 Temperature above 137 causing safety valve to operate 10 ERROR 4 displayed before sterilizing temp reached 11 ERROR 5 displayed ST SM45g SES 2000 Vac LS3 AUTOCLAVE PART 3 MAINTENANCE a Possible Cause Dirt on valve seat Check pressure and temperature to see if calibration is set too high Safety valve fault Re calibration needed Chamber temperature sensor fault Control board fault Failed solid state relay Water fill valve leaking Discharge valve leaking Chamber water level sensor fault Wiring loom fault Door seal leaking Solid state relay failed No voltage across heater Heater open circuit Control board fault Part 3 Remedy a With low pressure in chamber carefully operate valve by hand Warning Beware of risk of scalds from escap ing steam If leakage per sists fit new safety valve para 29 b Re calibrate control board para 57 onwards a Fit new safety valve para 29 b See Calibration Procedure para 57 onwards c Fit new temperature sensor para 14 d Fit new control board para 9 a Fit new solid state relay board para 26 Also see Appendix B a Drain reservoir and fit n
64. ividing panel and remove it from the PCB support Refit the relay board in reverse removal sequence CAUTION Ensure bottom edge of relay board is located in the PCB support slot Page 27 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE GG ESCHMANN PART 3 MAINTENANCE EMC Board Fig 2 4 item 5 27 before proceeding Remove the EMC board as follows Removecable tie and lift cover remove two screws and washers from the PCB and the choke and then remove the EMC board with the choke b Refitting is the reverse of the removal procedure However ensure cover is installed under EMC board before the board is refitted Printer Fig 2 2 item 21 28 Remove the printer as follows a Disconnect all electrical connections noting their position and orientation for correct reconnection b Remove two screws from the printer securing bracket c Withdraw the printer through the front panel d Refitthe printer using the reverse removal procedure Safety Valve Fig 2 3 item 16 29 Toremoveandreplace the Safety Valve proceed as follows a Remove safety valve from cross assembly and clean female thread of cross piece b Apply PTFE tape to thread of new valve and refit to cross assembly Band Heater Temperature Sensor Fig 2 4 item 15 30 Toremoveandreplacethe BandHeater Temperature Sensor proceed as follows a Remove sensor cover from band heater loosen nut on sensor retaining clamp and remove
65. lection CYCLE STARTED Programme selected and cycle started VACUUM ON Chamber air steam discharge in progress FILLING Water entering chamberpriorto steriliszation PULSING Pre sterilization steam treatment STERILIZING Sterilization in progress CONDENSING Discharging water and steam from chamber DRYING Loadbeingdried time remaining to the end of cycle will also be shown CYCLECOMPLETE Cycle completed successfully Only applicable to software version 5 2 or above as shown briefly on display when autoclave first switched on ERRORINDICATION General 28 lfanerroroccurs during the cycle an error code will be displayed see the Error Code Table on page 12 29 fanerroroccurs during acycle the control board will cancel the cycle see Fault Diagnosis and Errors and Error Clearing in Part 3 Note Theseerrorcodes will generally require investigation by an Eschmann trained engineer If an error occurs during the cycle the printer if fitted will printoutthe date andtime the message CYCLE FAILED andthe appropriate error code Information relating to the printer if fitted is given in Appendix A to this Manual Page 11 of 53 Part 2 SES 2000 Vac LS3 AUTOCLAVE PART 2 DESCRIPTION ERRORCODETABLE Display POWERFAILURE Error 1 not shown Error 2 Error 3 Error 4 Error 5 Error 6 Error 7 Error 8 Error 9 Error 10 Error 11 Error 12 Error 13 Error 14 Erro
66. n valve is connected to the elbow connection using PTFE tape Part No 301600 make sure that the tape does not cover the end of the non return valve ii The elbow connector is connected to port 1 of the valve using hydraulic sealant Part No 306234 make sure that when itis fitted the non return valve is pointing vertically down iii The long threaded end of the 1 4 x 5 16 male stud coupling is connected to port 2 of the valve using hydraulic sealant Part No 306234 f Refitanew orarepaired valve assembly in reverse removal sequence using a small quantity of Hellerine oil Part No 6701 70 to assist refitting silicon tube g Operate the autoclave using a 134 C with drying cycle to check that the solenoid valve assembly is working correctly Water Fill Solenoid Valve Assembly Fig 2 3 item 4 17 Thewater fill solenoid valve is removed and refitted as an assembly as follows a Disconnect the two electrical connections to the valve b Supportthe valve andundo the nut securing the 90 elbow to the lower manifold of the chamber Fig 2 3 c Withdraw the valve assembly and undo the nut connecting the nylon tube to the solenoid d Remove the valve assembly from the autoclave e Examine the valve assembly If only the coil has failed it can be renewed The valve can be also dismantled andcleaned see Note preceding para 15 and note i The 90 elbow connector is connected to port 2 of the valve using hydra
67. nd SS relay and heater element The manual reset overheat cutoutis operated by a fluid filled capsule clamped to the heating element providing protection ifthe temperature ofthe heater surface exceeds 250 C It will remake electrically if the reset button at the rear of the cabinetis pressed after giving the heater element time to cool Band Heater Overheat Cutout Fig 2 4 item 24 The band heater cutout is fitted on the band heater and is connected in series with the power supply switch Manual Reset Overheat Cutout mechanical and SS relay and Band Heater It contains a bi metallic disc thermostat which operates if the Page 8 of 53 temperature of the heater surface exceeds 250 C Thecutout will remake electrically ifthe reset button is pressed when the heater has cooled Fuses The unit has five fuses Two fuses Fig 2 4 item 2 on the rear panel ofthe cabinet rated as shown in TECHNICAL DATA which are connected in the mains supply to the unit Three more fuses are fitted on the solid state relay board see TECHNICAL DATA Transformer Fig 2 4 item 17 The transformer converts the incoming mains voltage to 24V a c It is rated at 50VA Water Fill Solenoid Valve Fig 2 3 item 4 The water fill valve controls the water fill sequence It is electrically operated from the 24V d c supply generated and signalled from the SSR board Water Discharge Solenoid Valve Fig 2 3 item 3 The water disc
68. ocked b Sensor not detecting water in chamber a Doorinterlock microswitch jammed in closed position b Switch fault c Doorinterlock microswitch out of adjustment a Dooropened after cycle selected b Door switch out of adjustment 5 a 5 Remedy a Replace pressure door lock para 10 To open chamber door push pressure locking bolt back with a thin blade if spring faulty If spring has seized disconnect body from unit para 10 and pull it backwards so that the locking bolt clears the door Switch on power to release pressure in chamber As b to open door then check discharge filter and bacteriological filter for blockage Check wiring to solenoid door lock and check solenoid for shorting or open circuit Replace solenoid door lock if necessary para 13 Fill reservoir Fit new float switch para 32 Clean or fit new water filter para 37 Strip pipework and clean Empty and clean reservoir Refill with distilled water para 9 part 1 Ensure chamber water level sensor is clear of obstructions Also ensure sensor is not dirty or corroded Check switch operating lever for freedom of movement Check operation of switch Adjust switch lever position or fit new microswitch if adjustment is correct para 12 Switch power off wait 5 seconds reset error see para 53 and restart cycle Adjust switch lever position or f
69. ol board is able to detect faults such as lack of water at the fill stage orloss of water and steam during the process and ST SM45g SES 2000 53 AUTOCLAVE Part 2 PART 2 DESCRIPTION it will indicate such problems by displaying errors codes such as ERROR3 or ERROR 4 respectively which will be accompanied by an audible warning signal see Error Code Table page 12 21 The autoclave operates at temperatures slightly above the usual recommended minimums The operating temperature for the 121 C cycle is set to 122 C and the 134 C cycle is set for 135 C 22 As the cycle enters the sterilization phase the display shows STERILIZING Atthe end of the sterilizing phase the heater is turned off and the discharge valve is openedto discharge water and steam from the chamber This phase is indicated by CONDENSING being shown on the display 23 Oncethecontrollerdetects that chamber temperature and pressure have fallen to a safe level the display CYCLE COMPLETE will be shown to indicate that the cycle is complete When the chamber dooris opened the display will show CLOSE THE DOOR Note If the autoclave has a printer the printout will include the following details Q Autoclave type and serial number Date and time of sterilization cycle Counter indication five digits with leading zeros Sterilization cycle type e g 134 C without drying Sterilization cycle time temperature and pressu
70. on the display will show SES Vacuum LS3 cycle count version of software which then changes to OPEN THE DOOR 9 After the work trays have been put in the chamber and the door closed a programme can be selected and initiated by pressing one of the programme selector buttons Fig 2 1b If the autoclave has a printer it will automatically start when the programme selector button is pressed Page 9 of 53 Part 2 SES 2000 Vac LS3 AUTOCLAVE SESCHMAN PART 2 DESCRIPTION 10 Whenthe doorisclosed with the power switched on this is sensed by the control board via the door interlock switch If any attempt is made to open the door once the cycle has begun the display ERROR 2 will appear and an audible signal will sound Under these circumstances itis necessary to switch the autoclave off wait5 seconds resetthe error see Part3 para 54 restartthe cycle 11 Theautoclave operates automatically atthe touch of asingle programme selector touch button Fig 2 1b and has eight programmes 134 C Porous load with drying SW1 134 C Wrapped load with drying SW2 134 C Unwrapped load with drying SW3 134 C Unwrapped load SW4 121 C Porous load with drying SW1 121 Wrapped load with drying SW2 121 C Unwrapped load with drying SW3 121 Unwrapped load SW4 12 Each programme selector button on the control panel Fig 2 1b will select either the 134 C or 121 C cycles
71. only be supplied by Eschmann Equipment Do not use alternative paper rolls Renew paper roll as follows a b Open autoclave chamber door to provide access Push door latch button A1 2 sideways in direction of arrow and pull door A1 1 open to expose paper roll A1 4 If any paper remains in printer tear end off against paper tear bar A1 8 and carefully withdraw the remaining paper from the rear of printer mechanism A1 5 Compress paper roll spring loaded retainer button A1 6 and withdraw empty paper spool from spindle Take new roll of paper separate paper end from the roll Remove any damaged or gummed part of the paper Press paper roll spring loaded retainer button A1 6 and locate new paper roll on spindle with paper unreeling anticlockwise as seen from open end of spindle Fig A1 Using scissors trim end of paper roll at an angle Fig A2 and insert this end of paper into paper input slot A2 1 Press paper feed actuator arm A1 7 until mechanism grips paper and pulls it through to front of printer door Turn paper roll by hand to take up slack paper Close printer door Check paper feed by pressing paper feed button A1 3 until end of paper is clear of tear bar Ensure that paper runs freely from printer Page 50 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Appendix A APPENDIK A Autoclave Printer Ribbon Cartridge Renewal Figs A3 and A4 Renew ribbon cartridge as follows a Remove pap
72. onnectelectrical connectionsto fan and vacuum pump b Release plumbing connections to vacuum pump noting the orientation of parts for reconnection c Hemove two screws and washers securing condenser cover to dividing panel and four screws and washers securing the cover to the condenser Remove cover complete with fan and pump d Release plumbing connections from condenser and remove pipework e Remove four screws and washers and remove condenser from chassis f Installation isthe reverse of the removal procedure Note When fitting the condenser in the chassis ensure the condenser is correctly positioned over the PCB cooling conduit and that the pipe connections face forward Cooling Fans Fig 2 4 items 11 and 10 22 Remove Condenser Fan Fig 2 4 item 11 or Enclosure Fan Fig 2 4 item 10 as follows a Disconnect electrical cables from fan b Remove screws and washers and remove fan c Installationisthe reverse ofthe removal procedure However when installing Enclosure fan ensure that the flow arrow points away from the support and that the electrical wires are positioned at the bottom Bacterial Air Filter Fig 2 3 item 10 23 Remove the bacterial air filter as follows a Disconnect the outlet silicone tube b Release the air filter from the spring clips on the chamber support bracket ST SM45g c Refit the filter in reverse removal order CAUTION Avoid kinking the silicone tube The filter must be ch
73. ossible to the temperature sensor CAUTION Take care not to damage the internal seals in the test port fitting Avoid using a sharp pointed thermocouple probe if possible c Insert temperature probe into the thermocouple entry port Fig 2 4 item 23 on the top chamber fitting The end of the probe mustbe inserted so that it protrudes approximately 20mm from the face of the chamber fitting d Insertpressure probe into the pressure test port Fig 2 4 item 22 on the safety valve chamber fitting Ensure that probe is fully inserted into the port e Connectautoclave to mains supply and switch on 63 Calibrate the autoclave as follows a Close the door and push switch SW2 Fig 3 3 to start a 121 WRAPPED DRY cycle If the 121 C cycles are not available for selection use All Cycles mode para 39 fifth bullet point then select 121 WRAPPED DRY Cycle b While VACUUM ON is displayed and before 30 kPais reached press and hold switch SW6 Fig 3 4 on the control board until two bleeps are heard indicating that Calibration Mode has been selected then release switch SW6 Notes i display will continue to work as for a normal cycle The unit will heat up to 121 C to allow initial calibration with a sterilizing time of 15 minutes ii To increase to 134 C press and release switch SWI Fig 3 3 SW1 must be pressed within 15 minutes or the cycle will condense as for a normal cycle Asingle bleep will
74. pump to reservoir copper 1 12 3010134 Tee 1 13 4242891 Pipe tee to reservoir 1 14 424290 Pipe silicone pump to manifold 1 15 4242674 Pipe air bleed valve to pump 1 16 424266 424225 Pipe nylon Water fil 1 17 424209 Water Fill solenoid valve assy 1 22 424271 Filter water 1 1 23 424222 424214 Pipe Y fitting to filter assy 1 24 424216 Pipe discharge 1 solenoid valve to reservoir 25 424223 424215 Pipe pressure lock 1 to chamber tee 26 424247 Pipe airin solenoid 1 valve to bacterial filter 27 424210 Air in solenoid valve assy 1 30 424306 ASSy non return valve 1 S 33 713580 Bacterial filter 1 3 34 490394 Mount assy filter 1 35 424217 Transducer coil 1 36 424208 Water discharge solenoid valve 1 306234 Hydraulic sealant As reqd ig 301600 Tape PTFE As reqd n 670170 Oil Hellerine As Not shown These parts are not required if the piston pump is or has been retro fitted ST SM45g Page 45 of 53 Part 4 SES 2000 Vac LS3 AUTOCLAVE ESCHMANN PART 4 ILLUSTRATED PARTS LIST PARTS LIST 3 HEATER AND PROCESS CONTROLS 1 see id d 4 LA CU 7 AS AS SBS D DAY a lt 5 2 DESEN SSC H 2 BENG N y d o 2 2 23 24 25 26 12 35 Page 46 of 53 ST SM45g ESCHMANN SES 2000 Vac LS3 AUTOCLAVE Part 4 PART 4 ILLUSTRATED PARTS L
75. r 15 Error 16 Error 17 FILL RESERVOIR Page 12 of 53 Meaning Cause Temporary failure in the mains supply to the unit Faulty or incorrectly adjusted door switch or door not fully closed at start of cycle Water failed to enter chamber fromreservoir Water level in chamber has dropped during run up to sterilizing cycle Heater element not working during run upto sterilizing phase Control channellowtemperature Control channel high temperature Display channel low temperature Display channel high temperature Insufficient first vacuum pulse Insufficient second vacuum pulse No steam pulse i Before filling takes place Air Detector test failure ii Atbeginning of sterilization Steam quality error Insufficient drying vacuum Sensor system failure Clock speed error during sterilizing phase Band heater not achieving setpoint temperature during drying phase Water level in reservoir has dropped below MIN mark Overheating 30 Intheunlikely event of overheating the red overheat warning lamp see Fig 2 1b and Fig 2 4 item 8 at the front of the autoclave will illuminate If this happens first allow 10 to 15 minutes to elapse forthe autoclave to cool then check the water level in the reservoir and top up if required When the water level is correct press the PRESS TO RESET button atthe rear of the cabinet Fig 2 4 item 21 and restart the cycle as normal If the fa
76. re Sterilization cycle ended message Operating information relating to the printer is given in Appendix A to this Manual 24 The overall time for the cycle is not fixed and depends on many factors such as the supply voltage the load andthe ambienttemperature However the control board will ensure a satisfactory sterilization cycle even when these factors vary over wide ranges 25 cycle employing a drying phase is selected operation to the end ofthe sterilizing phase is as described previously After discharge of steam and water back into the reservoir however the display DRYING will be indicated together with the time remaining to the end of the cycle During the drying phase operation of the autoclave will alternate between vacuum pulses and filtered air inlet pulses to achieve optimum drying 26 Thelength ofthe drying phase will vary according to the programme selected and the chamber band heater will operate to promote drying At the end of the drying phase the display CYCLE COMPLETE will appear indicating that the door can be opened ST SM45g DISPLAY MESSAGES 27 Throughout a selected cycle the following symbols may appear on the digital display Display Meaning OPEN THE DOOR Door was closed when the autoclave was switched on PLEASE WAIT The autoclave is measuring atmospheric pressure CLOSE THE DOOR The door is open and the cycle cannot start READY FOR USE Waiting programme se
77. s has been done to indicate the particular cycle which is in progress Power On Off Switch Fig 2 1b This switch controls the mains power supply to the autoclave ST SM45g da Overheat Warning Lamp Fig 2 1b Illumination of this lamp indicates that one of the two protective overheat cut outs has operated Door Latching Handle Fig 2 2 item 3 This handle operates the door mechanism to secure the door in the locked position against the chamber face Door Safety Latch Fig 2 2 item 5 Engages a safety catch to ensure that the door does not fly open shouldthere be residual pressureinthe chamber when the door latching handle is operated It can also be used to keep the door slightly ajar when the autoclave is not in use Door Interlock Microswitch Fig 2 4 item 4 This is used to signal the controller that the door is properly closed Itisoperatedby asimple adjustable mechanism and should operate just as the door is fully closed Pressure Door Lock Fig 2 3 item 14 This isa safety device designed to ensure that the door cannot be opened if the internal chamber pressure exceeds approximately 0 2 bar 3 0 Ibf in The device comprises a spring loaded plunger driven by the chamber pressure via a rubber diaphragm Chamber Pressure Safety Indicator Fig 2 1a Fitted adjacent to the door latching handle Fig 2 2 item 3 and operated by the pressure door lock Fig 2 3 item 14 it indicates that the chamber is
78. s less than 0 65kPa continue the leak test if greater stop the leak test and check the autoclave for leaks After correcting all leaks the leak test procedure must be repeated After 15 minutes 10 seconds record as P3 in kPa the pressure shown onthe chartrecorder stop and reset the stopwatch Subtract P3 from P2 and check thatthe resultis less than 1 3kPa Press switch SW2 Fig 3 3 to open the discharge valve to vent the chamber pressure to the reservoir m Remove the pressure probe from the pressure test port and refit the test port blanking cap ST SM45g n Disconnect and remove the chart recorder o Refit the autoclave cover as described in para 4 AUTOCLAVE CALIBRATION General 57 The autoclave will retain its calibration over long periods oftime but occasionally and when anew sensor orcontrol board has been fitted re calibration is necessary 58 It is recommended that the calibration is checked at regularintervals or ifthe autoclaves calibration is suspect 59 Forthepurposeofthis description it willbe assumed thatthe autoclave is working correctly and that a routine temperature calibration is required 60 Itis particularly important that the following points are noted before calibration is started i There must be no steam leaks Check by running a leak test see para 55 ii The chamber steam bleed valve must be working correctly iii The machine shouldhave been run sufficiently
79. s possible to 122 is indicated on the chart recorder Notes i Ifthe temperature trace has a sawtooth waveform calibrate the peaks to 122 C The temperature trace must always be above 121 C ii The autoclave display is notimportant atthis stage i When the temperature setting is correct check the autoclave process display If necessary match the display temperature to the temperature shown on thechart recorder by adjusting V3 anti clockwise to increase on control board Fig 3 4 j Push switch SWI Fig 3 3 A bleep shouldbe heard and the temperature will increase Wait until the trace on the chart recorder has stabilized in the sterilization phase k Adjust V2 anti clockwise to increase on control board Fig 3 4 until as close as possible to 135 C is indicated on the chart recorder Notes i Ifthe temperature trace has a sawtooth waveform calibrate the peaks to 135 C The temperature trace must always be above 134 C ii The autoclave display is notimportant atthis stage ST SM45g SES 2000 53 AUTOCLAVE Part 3 PART 3 MAINTENANCE Whenthe temperature setting is correct check the autoclave process display If necessary matchthe display temperature to the temperature shown on the chart recorder by adjusting of V4 clockwise to increase on control board Fig 3 4 m Check that the autoclave process display corresponds with the temperature pressure settings
80. set to 0000 ERRORS AND ERROR CLEARING 53 Ifan error occurs during the operating cycle an error code will appear on the display accompanied by continuous bleeps If a printer is fitted the error is reported together with the date and time of the occurrence andthe message CYCLE FAILED in double size letters is shown The error codes together with their meaning are shown in Section 2 Error Code Table 54 Whenanerroroccurs autoclave operationis inhibited until the error is cleared as follows a Switch off power to the unit b Push hold in P selector switch Switch SW5 Fig 3 3 and switch on power Release P selector switch after two seconds LEAK TEST PROCEDURE 55 leak test must be carried out before calibration takes place and may also be required during fault diagnosis The acceptance criteria is leak rate not to exceed 0 13 kPa min 1 3 mbar min Before doing a leak test make sure that the chamber is dry and at ambient temperature Leaktest 56 leak test procedure detailed below takes 15 minutes excluding pump down time Note A stopwatch a pressure probe and a chart recorder are needed for this procedure Alltest equipment used for calibration procedures should themselves be regularly calibrated with traceable records ST SM45g SES 2000 53 AUTOCLAVE Part 3 PART 3 MAINTENANCE WARNING This procedure is done with the autoclave cover remo
81. slow to stabilise at atmospheric pressure Previous cycle has left chamber too hot and wet Pressure not less than 20kPa on display due to pump inefficiency Pressure calibration error Pump cooling duct not fitted models up to mod state E only 8 b 3 Remedy Faulty band heater temperature sensor Fit new bandheatertemperature sensor para 30 Or Solid state relay faulty Replace solid state relay board para 26 Also see Appendix B Faulty solid state relay Fit new solid state relay board para 26 Also see Appendix B Or ensure chamber water level sensor is clear of obstructions Also ensure sensor is not dirty or corroded Checktemperature pressure calibration para 57 onwards Check sensor connections and solid state relay board and control board connection Lubricate hinge pivots with silicone grease Part No 306055 Clean mating surfaces of door seal and chamber flange with a clean cloth Check for blockages in discharge line and or bacterial filter air inlet line Reset chamber condition by running a 134 C unwrapped with drying cycle and leave door open for 5 minutes on completion Carry out leak test para 55 If it fails check pump components for leaks check all connections door seal and solenoid valves for leaks Recalibrate pressure channel para 57 onwards Fit cooling duct para 33 and check cooling fan operation
82. ter calibration Fig 3 4 65 Carry outband heater calibration whilst in calibration mode as follows Notes i A half turn of V7 Fig 3 4 clockwise or anticlockwise results in approximately 3 C change oftemperature ii Thetime period between successive temperature peaks is approximately three minutes iii The band heater must be set during the first 15 minutes of drying an internal timer switches the heater off for the last five minutes of drying a Press switch SW2 Fig 3 3 This will cause the chamber to discharge to reservoir and then automatically start a drying phase for 20 minutes b When the drying phase has started observe the band heater temperature as shown on the chart recorder see para 62b for position of thermocouple The temperature peaks must be between 154 and 158 C If necessary adjust V7 on control board Fig 3 4 c When the band heater temperature has been satisfactorily set wait until the calibration cycle has ended stop the chart recorder d Seal V7 on control board Fig 3 4 with a small quantity of anti tamper sealant Part No 670678 between the adjuster screw and the body notin the screw slot Functional test 66 Carry out a functional test as follows a Close the autoclave door and press switch SW1 Fig 3 3 to select a 184 C POROUS DRY cycle Make sure that temperature recorded on the chart recorder is within 134 C to 137 C during the sterilizing phase b On
83. ter only 424138 issue 04 or later and its associated assembly 112507 are direct replacements for 424138 issue 03 or earlier which will become obsolete From November 2004 any issue 03 or earlier versions of 424138 that need replacement should be replaced with a 424138 issue 04 or later and a Solid State Relay Assembly 112507 The loom attached to 424138 issue 04 or later has four spade connectors A1 A2 B1 and B2 anda 4 way connector one lead labelled A These all connect to the new Solid State Relay Assembly 112507 and the relay connections are clearly marked with matching identifications A1 A2 B1 and B2 and Control A see orientation of plug in the illustration below Removal and replacement of 424138 issue 03 is detailed within this manual removal and replacement of issue 04 is similar except assembly 112507 will need to be removed first and replaced last breaking and making connections on 112507 as required 112507 utilises existing fixings as identified in the illustration below Should afault developin 112507 e g Immersion heater not working but no fault can be found in wiring fuses or other components etc it can be replaced easily without disturbing other components The assembly 112507 should be replaced as a complete assembly do not attempt to replace the relay only When replacing 112507 ensure all connections to it have been made before assembling back into the autoclave and securing it in place After final
84. to become thoroughly warm iv Running calibration cycles will not advance the cycle counter v Some of the error detection systems are automatically switched off during the calibration phase vi Amachine with suspect calibration should only be run using the calibration procedure described below This should avoid the possibility of the safety valve lifting due to excess chamber pressure which might happen if the 134 C programme were to be selected Calibration Procedure Note During calibration replace the cover do not fix to ensure accuracy On later models V1 V5 can be adjusted through the sliding port in the cover 61 Theautoclavecontrol programme contains a special calibration sequence to ensure accurate calibration in the shortest possible time Do not set up the autoclave by doing normal sterilizing cycles itis important to proceed methodically 62 Prepare the autoclave for calibration as follows a Switch off the autoclave and isolate from mains supply Ensure the water reservoir is full and for safety reasons ensurethatthe reservoiris properly covered Ideally atest load should be placed in the chamber but this is not essential Page 33 of 53 Part 3 SES 2000 Vac LS3 AUTOCLAVE GG ESCHMANN PART 3 MAINTENANCE b With the autoclave cover removed attach the bare wiretip ofatwisted thermocouple tightly againstthe top outer surface of the band heater next to the protective cover and as close as p
85. tted starts automatically when a cycle button is selected and will print out a hardcopy of the sterilization cycle Details ofthe printer are given in Appendix A to this Manual Q Fans Fig 2 4 items 10and 11 Two fans are fitted in the autoclave One fan provides cooling for the condenser and the PCB compartment via a bleed conduit The other fan draws air over the chamber for rapid cooling between cycles Q Band Heater Fig 2 4 item 18 The band heater heats the chamber during the drying cycle 9 Board Fig 2 4 item 5 The EMC board provides electro magnetic compatibility protection for the autoclave OPERATION CYCLE 6 Adetailed knowledge ofthe operation ofthe autoclave is not necessary to be able to repair it effectively however abasic understanding of the various processes of autoclave operation which occur during acycle is given in the following paragraphs CAUTION Ensure that the Autoclave is switched off before filling the reservoir DO NOT USE TAP WATER Note When filling the reservoir consult the Instructions for Use which provides information on the types of water that should be used 7 Power is switched on by selecting the power switch O I to I Fig 2 16 Ifthe chamber door is open there now follows a single audible tone accompanied by the display SES Vacuum LS3 cycle count version of software which then changes to CLOSE THE DOOR 8 Ifthe door is closed when power is switched
86. ulic sealant Part No 306234 ii The 135 connector is connected to port 1 of the valve using hydraulic sealant Part No 306234 f Refitanew orarepaired valve assembly in reverse removal sequence g Operate the autoclave using a 134 without drying cycle to check that the solenoid valve assembly is working correctly Page 26 of 53 Heating Element Fig 2 4 item 1 18 Toreplace heating element proceed as follows a Remove electrical connections from element terminals b Remove sterilizing trays and tray carrier and remove element clamp from inside chamber together with heater thermostat sensor and clip c Unscrewandremove large nutfrom heater mounting boss at rear of chamber d Withdraw heating elementthrough chamber door CAUTION Avoid kinking the capillary tube Fitreplacement heating element by reversing order ofremoval procedure CAUTION Ensure that the Manual reset cut out sensor is correctly positioned see details para 36 Note Ensure element is horizontal when fitted Also ensure that anew sealing washeris used andthatthe nut is fully tightened to avoid leaks Door Seal Fig 2 2 item 9 19 Open chamber door and remove central aerotight nut stainless steel washer seal retaining ring and seal retaining disk Remove door seal from seal retaining disk When fitting a new door seal ensure that it is correctly seated on seal retaining disk and that aerotight nut is tight
87. ult persists switch off the autoclave and call an Eschmann Trained Engineer ST SM45g Part 2 ESCHMANN SES 2000 Vac LS3 AUTOCLAVE PART 2 DESCRIPTION Note Some autoclaves will have a different pump to that shown See maintenance section and parts list for pump replacement details Frontpanel Chassis Printer Foot Doorbeam Door knob PCB cooling conduit Link 1 Process display window 10 Seal retaining rim 2 Control panel 11 Aerotight nut 3 Doorlatching handle 12 Door safety catch 4 Pressure door 13 Pressure chamber assembly 5 Doorlatch 14 Worktray 6 Pressure safety indicator 15 Reservoirlid 7 Doorcover 16 Reservoir 8 Sealretaining disc 17 Coverscrew 9 Doorseal 18 Unit cover Fig 2 2 Autoclave General Arrangement ST SM45g Page 13 of 53 Part 2 SES 2000 Vac LS3 AUTOCLAVE PART 2 DESCRIPTION e a Note Some autoclaves will have a different pump to that shown See maintenance section and parts list for pump ax v Q replacementdetails lt AGP d 23 OS IDE Pint 9 A Stud coupling nut 1 Vacuum valve 9 Transducercoil 2 Steam bleed solenoid valve 10 Bacterial air filter 3 Water discharge valve 11 Reservoir float switch 4 Water fill valve 12 Discharge line filter 5 Airin valve 13 Non return valve 6 Condenser 14 Pressure door lock 7 15 Steam bleed valve 8 Pump foot 16 Safety valve
88. ved mains power switched on and the system pressurized Take care when making adjustments Remove the autoclave cover as describedin para 3 Insert a pressure probe into the pressure test port Fig 2 4 item 22 making sure that the probe is fully inserted into the port Closetheautoclavedoor and select ENGINEERING MODE para 41 d Simultaneously startthe stopwatch and press switch SW1 Check that the vacuum pump starts and the pressure shown on the process display Fig 2 2 item 1 decreases steadily e After5 minutes stop and reset the stopwatch and note that the indication shown on the chart recorder is less than 12kPa and is decreasing very slowly f Using asmall screwdriver adjust V5 Fig 3 4 on the control board Fig 2 4 item 19 to set the autoclave process display indication to the value shown onthe chart recorder clockwise to decrease and anticlockwise to increase the pressure indication Note The autoclave process display can only be set in steps of 2kPa and it must be adjusted to the nearest 1kPa of the chart recorder indication rounded up or down as necessary g Simultaneously startthe stopwatch and press switch SW1 to stop the vacuum pump and then record as P1 inkPa thepressure shown onthechartrecorder h After five minutes 10 seconds has elapsed record as P2 in kPa the pressure shown on the chartrecorder Subtract P2 from P1 Ifthe result leak rate i
89. ying 134 C Unwrappedload 121 Porous load with drying 121 C Wrapped load with drying 121 C Unwrapped load with drying QO 121 C Unwrappedload For typical sterilization cycle times refer to TECHNICAL DATA 3 The required sterilizing programme is selected and started by pressing the appropriate programme button on the front panel of the unit following which the sterilizing drying cycle proceeds automatically until complete The printer if fitted will startautomatically when the programme button is pressed 4 Indication of cycle status or error codes during cycle are provided by a digital display and printer if fitted OPERATING FEATURES Figs 2 1 2 2 2 3 amp 2 4 5 following equipment designed for control or protection is incorporated in the autoclave LI Process Display Window Fig 2 2 item 1 The digital display indicates the temperature and pressure insidethe chamber Italso provides simple messages for the user which indicate the stages through the cycle and also error conditions should any occur FourProgramme Selector Buttons Fig 2 16 SW1 to SW4 These are used to select and start particular cycles They can also be used to put the autoclave in the Engineering mode as described later Q Green Light Emitting Diodes LED s Fig 2 1b There are eight LED s which flash primarily to indicate the cycles available for selection that can be started and when thi

Service Manual - Frank`s Hospital Workshop

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