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Service Manual - Frank`s Hospital Workshop

1. o 4 For pipe set see 26 Parts list 2 Note Illustration shows 3 twinlocks fitted product now supplied with only 1 and two blank plugs Fig 9 sheet2 Parts list 3 General assembly components P46 51 ST SM33I Item Part No 14 15 16 17 18 19 20 21 22 23 25 26 or 670070 or 306055 REF 87 041 45 non vacuum units only ST SM33I PARTS LIST 3 GENERAL ASSEMBLY COMPONENTS Fig 9 Sheet 2 391024 391049 391032 391083 391047 391025 710441 710280 710019 710733 391051 391029 307239 710733 391030 699158 391082 391031 699158 391105 424444 709861 710731 307046 391042 699188 699158 391074 391139 710371 391086 710734 391071 391191 391041 391199 391201 111804 427035 110535 710154 111762 306234 301600 670650 695777 391173 391174 Description Secondary catch Spring Pivot pin Secondary catch Door beam Pin Sellok 2mm x 16mm microswitch supt Chamber neck ring assy Bung M10 grub screw Bung M6 grub screw Screw M5 x 10 slotted head was Pozi hd Washer M5 shakeproof Jubilee clip Pin door pivot Screw M5 x 16 cap head Washer M5 shakeproof Pin door beam pivot Pin Sellok 4mm dia x 25mm Catch primary lock Pin primary catch pivot Pin Sellok 4mm dia x 25mm Pin Microswitch actuation Calibration clip Washer M4 plain Washer M
2. 34 8 27 Display board 2 2222 34 8 28 Mains fuse holders 34 8 29 Membrane key pad 34 8 30 Reservoir level sensor 34 8 31 Waterpump 00 0 eee ee 35 8 32 Test probe port and pressure gauge 35 8 99 MOOK sareren ae i questa ah Bien 35 8 34 Band heater resettable thermostat 35 8 35 Vacuum pump maintenance 35 8 37 Pressure door lock 36 9 Technical data 9 Technical data aaa cece ees 48 Parts lists Parts list 1 Electrical 2 2 2222 222er 39 41 Parts list 2 Pipes and plumbing iii iacsi 43 Parts list 3 General assembly 45 47 Tables Table 1 Key to display A2 10 Table2 Special functions 15 Table 3 Protected functions 17 Table 4 Fault diagnosis amp error number details 22 Table5 Protected function P7 quick reference 29 Figures Fig 1a Control panel SES2555 LS5 5 51 Fig 1b Control panel SES2555 QuickVac 5 51 Fig 2 Main components covers on 6 Fig 3 Main components covers off 7 Fig 4 Main components covers off non vacuum 8 Fig 5 Pipe connections and identification 14 Fig 6 Vacuum pump part identification 35 Fig 7 Parts list 1 Electrical 38 and 40 Fig 8 Parts list 2 Pipes and plumbing 42 Fig 9 Sh
3. LS5 SES2555 OESCHMANN amp QuickVac VACUUM amp NON VACUUM AUTOCLAVES ses 8 Little Sister 5 606023 ST SM33l S JESCHMANN Introduction Description Operating controls amp display Autoclave components Operation cycle Maintenance Part removal amp replacement Technical data Read these Instructions before use Keep thls Service Manual in a safe convenient place for future reference 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 enquires 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 The Serial Number plate is located here For further information visit www eschmann co uk All correspondence relating to the after sales service of Eschmann Equipment to be addressed to UK Customers Eschmann Equipment Peter Road Lancing West Sussex BN15 8TJ England Tel 44 0 1903 765040 Fax 44 0 1903 762006 Overseas Customers Contact your local distributor In case of doubt contact Eschmann Equipment Patents and Trade marks The ESCHMANN name and logo are registered trade marks of Eschmann Holdings Limited Eschmann Equipment is a trading name
4. P5 51 ESCHMANN Fig 2 Main component identification covers on Door open solenoid Fig 3 item 6 This is operated when the door open button B7 is pressed to release the primary door lock or the controller signals it to open the door onto the secondary catch during drying on non vacuum autoclaves Secondary catch Fig 2 item 12 To ensure that the door does not fly open should there be residual pressure in the chamber when the open door button is operated Primary door lock Fig 3 item 12 Used to lock the door shut during all cycles cannot be released until Pressure door lock Fig 3 item 34 opens when pressure falls below 0 2Bar Gauge Door closed microswitch Fig 3 item 19 This is used to signal the controller that the door is properly closed It should operate just as the door is fully closed Door locked microswitch Fig 3 item 18 This is used to signal the controller that the door is properly locked It should operate just as the door is fully locked Chamber pressure gauge Fig 3 item 21 Fitted behind the door cover it indicates the approximate chamber pressure without electrical power Water reservoir Fig 3 item 5 This is used to hold water which is admitted into the chamber via the water fill valve Fig 3 item 11 The water reservoir also receives hot water and steam vapour discharged from the chamber towards the end of the cycle via the water discharg
5. Protected function P2 then recalibrate as section 7 4 23 Error 23 displayed Wrapped load leak test pressure rise above set limit a Chamber integrity fault a See 12b 24 Error 24 displayed Wrapped load leak test pressure fall outside set limit a Invalid test a Repeat test b Pressure transducer fault b Replace Power PCA c Power PCA fault c Replace Power PCA 25 Error 25 displayed Time to create initial fill vacuum above set limit a Chamber integrity fault a See 12b b Vacuum pump fault b See 15b c Vacuum inlet valve fault c See 15c d Wet warm chamber d See 15d continued on page 26 ST SM33I P25 51 OESCHMANN FAULT DIAGNOSIS Continued 26 Error 26 displayed Chamber water level sensors maximum before minimum a Sensor wiring fault a Sensors item 14 and 17 Fig 3 wired wrong way round Minimum fill sensor item 14 Fig 3 wire dislodged or broken Maximum fill sensor item 17 Fig 3 short after cycle started 27 Error 27 displayed Wrapped load purge time outside set limit a Power to heater fault a See 13a b Chamber integrity fault b See 12b C Pressure sensor fault c Check pipe from chamber to pressure transducer on power board connected and not leaking Pressure transducer fault change power board see 8 7 Check pressure calibration see 7 4 28 Error 28 displayed Unwrapped purge time 1 outside set limit a Power to heater fault a See 13a b C
6. The chamber should be allowed to dry and cool before starting another cycle To start another cycle select the cycle and start the autoclave in the normal manner 7 If the error persists or an error number occurs that is listed at the end of this table then call the Eschmann After Sales Service Department see details inside front cover or contact your approved service engineer Do not attempt to solve an error using tools or tampering with the autoclave FAULT DIAGNOSIS Note Consult Table 3 the protected functions table section P7 This function will enable each of the main components within the autoclave to be tested by pressing the specified buttons on the control panel thus verifying the inputs and outputs to the microcontroller This procedure will help eliminate working components from those listed below as the possible cause of unit faults during error correction and fault diagnosis 1 No display or LEDs illuminated when power switched on a Mains supply failure a Check mains supply is available and switched on Check mains plug and plug fuse Check supply cable for loose connections or breaks b No 24V on power board b Either of the mains fuses item 8 Fig 2 failed see 8 2 to replace fuses Faulty power switch item 9 Fig 2 see 8 21 to replace switch Transformer item 27 Fig 3 failed see 8 6 to replace transformer Wiring fault mains to fuses fuses to switch switch to transformer transformer to
7. If first test is PAS5 the air valve will open to conduct detection test After one minute if pressure lt 34kPa the leak rate is measured for one minute if gt 34kPa test aborts display D3 will show pressure If the rate of pressure rise is more than 0 9kPa display D2 will show 7455 indicating the autoclave has passed the test or FAIL to indicate the autoclave has failed the test i e pressure rise equal or less than 0 9kPa To resume normal use switch off the mains switch item 9 Fig 2 and then switch back on or press B7 with the door open With display D1 showing FO close the autoclave door if open press B5 until display D1 shows F6 press B6 Indicator A4 will flash press B7 to open the door indicator A3 will illuminate Place the Eschmann LS5 Vacuum Type S and QuickVac Steam Penetration Test Device in it s pouch see test device instructions for use and into the chamber Close the door A4 will illuminate press the start button B6 this will start a special B8 cycle no drying D2 and D3 will show temperature and pressure as normal during the cycle At the end of the cycle the normal audible sound will be heard Press B7 to open the door display D1 will be showing FO To resume normal use switch off the mains switch item 9 Fig 2 and then switch back on or press B7 with the door open NOTE This function can also be used to carry out HTM2010 Performance Qualification PQ Tests in conjunction with t
8. Not connected BE RD YW BN YW GN BE c Door Locked Door Closed Chamber Level Chamber Level Switch Switch Minimum Maximum 2K E lt Mains Fuse T3 15A E Transformer 696207 PK _ BK PK WE Water Reservoir OE BK WE Minimum Level Indicator OE BK OE BK NOTE Wire colour denoted by first RD RD BK and last letters e g PK Pink Door Close Solenoid BK 2 RD 1 i Bi gt o Temperature Sensor Chamber BE 4 WE 3 Q a o Temperature Sensor Chamber 5 BK 2 RD 1 3 ST SM33I P49 51 Door Open Solenoid Water Pump KO AA BK Fig 10 Schematic electrical diagramme non vacuum autoclave SJESCHMANN Povver PCB Assembly 391314 Display PCB Assembly 391312 9 VVay Ribbon RS232 Cable 40 VVay Ribbon 391299 391302 assembly Front Panel Mains Puses Mains Switch BDM 16 Way Ribbon Printer cable Live an E BN rr BN connection 391301 assembly Service use only Neutral SEE Er BE u Membrain key pad 391016 Earth GN YW p BN BN Reset Cooling 11 Way flexi circuit thermostat BN Fan BK BN Immersion Heater M Steam Bleed Water Discharge Air Admit Vacuum Water Fill BE BE Valve Valve Valve Valve Valve Thermal Fuse r e 7 I Band Heater BE BE BK BK Resettable
9. Reassemble the reservoir condensing coil fill pipe spigot with large washer use PTFE tape part number 301600 on spigot thread the water level sensor and cover retaining spigots When replacing the top electrical connection for the water level sensor note the following order for the parts PTFE washer against the reservoir with a steel washer on top then the electrical connection a steel washer and finally the screw with PTFE tape around thread Reconnect both the electrical connections and then the fill pipe using Hellerine oil part number 670170 sparingly and a cable tie at the base of the reservoir Replace the assembly into the autoclave and secure in place The jubilee clip around the reservoir filling pipe should be tightened to a maximum torque setting of 1 7N m do not exceed this as excess torque could damage the reservoir and filling pipe Replace the two silicone pipes at the top of the reservoir vacuum exhaust and discharge using new cable ties P31 51 ESCHMANN 8 6 Mains transformer Detach the mains transformer item 27 Fig 3 connections noting the position of each one Remove the two retaining screws and shakeproof washers and withdraw transformer The replacement transformer should be an identical unit rated at 75VA To replace the transformer reverse the removal procedure ensuring the connections are remade in the correct manner 8 7 Power board Note See Appendix 1 before proceeding 8 7 1 To remov
10. printer location 391006 Hinge pin top 2 391012 Pin door linkage 391013 Spring door linkage pin 3 391004 Hinge plate door bottom 710091 Screw M5 x 10mm Pan head 4 391003 Printer door 5 391146 Fastener Va turn 6 391143 Front panel moulding 391005 Bush door hinge 710119 Screw M5 x 10mm Pozi head was Pan head 111193 Shouldered washer top fixing screws only if fitted 7 391102 Overlay label 8 391022 Door chamber 9 391028 Seal door 10 391037 Filter gauze chamber 11 391043 Top cover older models or 111648 Top cover with side fixings 111767 M5 x 10mmTorx pin screw 12 391046 Foot small rear 391090 Screw M5 x 16mm Pozi head 13 391038 Foot large front 391090 Screw M5 x 16mm Pozi head 30 391187 Printer ribbon retaining clip if printer fitted 31 111409 Blanking plate 32 110953 Screw M4 x 12mm Torx pin c sk 33 111692 Printer roll holder 34 391198 Door spacer MISCELLANEOUS 391141 Label LS5 Door cover 391142 Label SES2555 Door cover green 391138 Label reset press here symbol 111782 Label QuickVac Door cover 111783 Label SES2555 Door cover blue non vacuum units only vacuum units only ST SM33I Qty Spares a ND po HP PO Pw H HAH AH HK HK ADN KOD AH AH AS D l cl 1 NI 2 Not illustrated continued on page 46 P45 51 SJESCHMANN NOTE The fixings screws nuts washers etc for each part are detailed in the parts list 18 following each item
11. 3 Top cover replacement On early models no side fixing screws Slide the top cover into place tilted slightly down at the back until slightly forward of the reservoir Push the cover down and back to enable the clips inside the cover to engage on the reservoir spigots item 30 Fig 3 Finally push the cover down at the front to engage the lower retaining clips onto the base of the autoclave Ensure all four clips are correctly located before replacing the front covers On later models with side fixing screws Slide the top cover back into place and replace the two side fixing screws TX25 Torx pin tamperproof screwdriver to secure it 8 3 4 Front cover replacement Ensure the safety valve shield item 27a Fig 9 sheet 2 is positioned correctly as shown in Fig 9 sheet 2 Position the front cover assembly over the open door in front of the ST SM33I autoclave and pass the reservoir drain pipe and tap through hole C Fig 2 Reconnect the ribbon cable to the display board and on vacuum units the air inlet pipe to the rear of the inlet filter Replace the ribbon cable clamp if removed at 8 3 1 above Position the cover assembly back into place left hand side first replace the cover retaining screws with the correct shouldered washers in place where required see Parts List 3 and return the drain pipe and tap into its retaining clips Check the door spacer item 34 Fig 9 is in place before finally depressing the sprung
12. CONNECTIONS amp PIPE IDENTIFICATION NON VACUUM AUTOCLAVE CHAMBER 19 Vacuum valve Steam bleed valve Bacterial air filter Water discharge valve Drain tap Reservoir Pressure door lock if fitted Fig 8 Parts list 2 Pipes and plumbing components P42 51 ST SM33I Item Part No Description Qty 1 301349 Twin lock test plug 1 1 2 NI 391140 Screw 10mm x 12mm Skt cap head 1 391050 Washer Dowty 10mm dia 2 2 3 391018 Reservoir spout cup 1 NOTE The new preferred cup fixings shown below may differ from those initially supplied 112012 Washer M5 x 16mm top fixing only 1 112011 Washer spring M5 2 710271 Screw M5 x 16mm soc cap head 2 4 391019 Reservoir 1 710119 Screw M5 x 10mm Pozi head 2 710733 Washer M5 shakeproof 2 111312 Reinforced hose inside reservoir 1 5 391035 Condensing coil 1 6 391056 Headed bushes older units only 2 710119 Screw M5 x 10mm pozi head older units only 2 7 391197 Pipe spigot and filter assembly 1 307252 Washer large 1 1 8 391059 Reservoir cap 1 9 391064 Manifold 1 10 391079 Cable grommet 1 1 TI 391095 Domed plug 1 12 391080 Elbow 1 301357 Nut 14 BSP 1 13 391055 Pipe spigot 1 14 391166 1 25 Bore hose 1 391062 Jubilee clip 2 15 391033 Air filter mount 1 16 391063 Domed plug 1 17 713580 Bacterial filter and straight connector 1 4 18 391168 Discharge Air bleed pipe assembly 1 1 19 391169 Fill Empty pipe assembly
13. Power PCA and protected from overheating by a manual reset thermostat Fig 3 item 25 Refer to TECHNICAL DATA for heater element loading Chamber water level sensors Fig 2 items 10 and 11 and Fig 3 items 14 and 17 These signal the power board when the minimum and maximum water levels have been achieved in the chamber during filling They are connected to the power board Thermal fuse not illustrated strapped on the outside of the chamber behind neck ring Non vacuum units only The thermal fuse is connected in series with the chamber heater element providing protection if the temperature of the thermal fuse exceeds 184 C chamber will be above 250 C It cannot be reset and must be replaced if it trips RS232 serial connection port 9 way D type Fig 2 item 4 This connection port can be usedto linkthe autoclave to a P C for calibration customization software upgrades fault diagnosis etc providing the correct equipment is available e g software Magnetic door latch Fig 3 item 7 Vacuum units only Used to hold the primary door lock Fig 3 item 12 in place during the vacuum cycle Pressure door lock Fig 3 item 34 This lock stops the door opening when the pressure inside the chamber is above 0 2Bar Gauge Note Notfitted on early units 5 Operation cycle 5 1 A detailed knowledge of the operation of the autoclave is not necessary to be able to repair it effectively however a basic understanding of the var
14. Thermal Fuse QE OE BN WE BK Vacuum Pump GN YW WE BK RD l BE RD YW BN YW GN BE Door Locked Door Closed Chamber Level Chamber Level Switch Switch Minimum Maximum BK Mains Fuse T3 15A Transformer 696207 PK BK PK WE Water Reservoir ees OE BK WE Minimum Level Indicator OE BK OE BK NOTE Wire colour denoted by first RD RD BK and last letters e g PK Pink Door Close Solenoid BE RD BK 2 RD 4 E 220 Temperature Sensor Chamber Door Open Solenoid BE BE 4 Notconnected RD WE 3 amp a o Temperature Sensor Chamber 5 BK 2 Nateoncected BK E RD Qr c a gt o Temperature Sensor Band heater 3 Fig 11 Schematic electrical diagramme vacuum autoclave P50 51 ST SM33I amp ESCHMANN VACUUM e RAPID STERILIZATION CLA ii EE NEN s Fig 1b Control panel for QuickVac and 2555QV models ST SM33I P51 51
15. Transformer Screw M4 x 8mm Pozi head Washer M4 shakeproof Sensor temperature Washer Dowty 10mm dia Element heating Clamp element temperature sensor Washer Nut element Thermal fuse assembly 10 amp Band heater Water pump Spring clip Washer M3 shakeproof Screw M3 x 6mm Pozi head Cycling Thermostat Screw M3 x 6mm Pozi head Washer M3 shakeproof Spare O ring seal Reset thermostat overheat Screws M3 x 6mm Pozi head Washers M3 shakeproof Spare O ring seal Solenoid door lock open Screws M4 x 8mm Pozi head Washer M4 shakeproof Sensor band heater temperature Washer M4 plain Washer M4 shakeproof Nut 4BA Microswitch door locked lever Washer M4 plain Truarc retaining disc Microswitch door closed roller Washer M4 plain Truarc retaining disc vacuum units only NI Not illustrated Qty Spares 2 1 2 2 1 E 1 2 1 2 1 1 E 4 4 1 1 a 1 1 1 B 1 s 1 1 2 2 2 z 1 1 1 1 1 1 1 1 1 1 3 1 1 1 1 1 1 2 1 1 1 2 2 P As Reqd 1 1 1 2 2 As Read 1 2 1 4 4 2 1 4 E 1 s 1 z 1 1 2 E 2 2 1 1 2 E 2 2 Continued on page 37 P39 51 SJESCHMANN NOTE The fixings screvvs nuts vvashers etc for each part are detailed in the parts list follovving each item 5 Note Illustration shows 3 twinlocks fitted product now supplied with only 1 and two blan
16. Vacuum pump off If fitted the printer outputs TPV followed by the time and temperature and pressure values ST SM33I Programmed pause If chamber pressure does not rise by more than 0 9kPa in the last minute water fill valve opens Wait for water to reach minimum level Second LED on progress indicator illuminates Wait for water to reach maximum level Water fill valve closes Third LED on progress indicator illuminates Immersion heater on Fourth LED on progress indicator illuminates Temperature rises Wait for the pressure to rise to 50kPa above atmospheric Fifth LED on progress indicator illuminates Steam bleed valve opens If fitted the printer outputs TPP followed by the time and temperature and pressure values Programmed pause Steam bleed valve closes Sixth LED on progress indicator illuminates Heater off If pressure above 115kPa fan on until 115kPa achieved Fan off vacuum inlet valve opens and pump starts Wait for pressure to fall 20kPa below atmospheric Pump off vacuum valve closes heater comes on Wait for temperature to reach 135 0 Seventh LED on progress indicator illuminates If fitted the printer outputs TSS followed by current time temperature and pressure values D1 indicates remaining sterilization time in minutes initially 18 mins Eighth to thirteenth LED s on progress indicator illuminate at regular intervals Temperature should not deviate
17. and the door closed before selecting F4 ST SM33I METHOD OF USE To use protected P functions requires knowledge of the PIN code code is in HEX format With display D1 showing FO press the start button B6 display D1 shows 0 Use B2 and B3 to adjust D1 to show the first digit of the PIN number then press B4 to confirm it D1 will show a 0 in the next position of the PIN number use B2 B3 and B4 to adjust and confirm the second digit Continue until all digits have been entered D1 will show PO Press button B5 to cycle through the protected functions PO P9 Use the information in Table 3 Protected Functions to carry out the selected P function and return the autoclave to normal operation mode Note The printer should be loaded with paper before entering this special functions mode With display D1 showing F1 press the start button B6 to start the printer test a character set printout display D1 shows F11 To stop the test press button B7 the printer will stop at the end of the test cycle display D1 shows FO To resume normal use switch off the mains switch item 9 Fig 2 and then switch back on or press B7 with the door open With display D1 showing F2 press the start button B6 to start printing a summary of the last five cycles completed by the unit cycle temperature cycle type cycle count date and time at start of cycle date and time at end of cycle and the cycle result Display D1 returns to FO To resume normal
18. bar at 134 C is 2 03 bar and at 137 C is 2 32 bar 9 3 Maximum Load Tray 1 5kg maximum per tray Cassette 2 0kg maximum per cassette Chamber 8 0kg maximum total chamber load 9 4 Water reservoir capacity 8 0 litre 9 5 Weight approx Non Vacuum Net 42 5kg Shipping 55 5kg For Vacuum add 6 5kg 9 6 Safety standards EN 61010 1 1993 inc Amendment 2 1995 EN 61010 2 041 1996 9 7 Design pressure 2 85bar gauge P48 51 ST SM33I DISCOVER NEW INNOVATION NEW TECHNOLOGY DISCOVER S JESCHMANN Eschmann Equipment Peter Road Lancing West Sussex BN15 8TJ England Tel 44 0 1903 753322 Fax 44 0 1903 766793 www eschmann co uk ESCHMANN Power PCB Assembly 391308 Display PCB Assembly 391312 9 Way Ribbon RS232 Cable 40 Way Ribbon 391299 391302 assembly Front Panel ics dsl Mains Switch BDM 16 Way Ribbon Printer cable Live EN p Nd BN connection 391301 assembly I Service use only BE BE Y BE Neutral Memb k d 391015 eutra 2 En embrain key pa Earth GN YW BN BN Thermostats Reset Cycling Cooling 11 Way flexi circuit BN Fan BK BN Immersion Heater I Steam Bleed Water Discharge g 3 3 g Water Fill BE BE Valve Valve 9 9 9 8 Valve Thermal Fuse S z E E o o o o i Eo cA ii Not connected BE BK OE Not connected OE BN WE BK WE BK RD
19. cycles the sterilisation time is extended to give adequate time to achieve an accurate calibration Button B5 LED is illuminated and if fitted the printer records time and cycle data with the words Calibration Cycle after the cycle type VVait for the sterilisation plateau to be reached then press button B1 Display D1 shows t followed by the current temperature Use buttons B2 and B3 to set the value in display D1 to the current temperature indicated on the calibrated instrument Continue to adjust the temperature in D1 until a stable condition is achieved Note The sterilisation time can be extended if required by pressing B5 Press button B4 until a beep is heard Display D1 shows the new temperature value Press button B1 display D1 shows P followed by an estimated pressure value based on the current temperature Use buttons B2 and B3 to set the value in display D1 to the current pressure indicated on the calibrated instrument the value in display D1 changes in steps of 2 Press button B4 until beep is heard Display D3 shows the new pressure value Press and hold buttons B2 and B6 until beep is heard The 121 LEDis extinguished and the 134 LED is illuminated the temperature rises towards 135 5 C process display A2 returns to the seventh LED illuminated display D1 shows P5 Wait for the temperature to approach 135 5 C then press button B1 Display D1 shows t followed by the current temperature Use buttons B2 and B3
20. every week At every service interval the reservoir must be removed thoroughly cleaned and dried see section 8 5 and then refilled with vvater DO NOT USE TAP WATER Eschmann recommend the use of Sterile Water for Irrigation alternatively clean distilled or deionized water or water treated by reverse osmosis may be used 2 Description 2 1 The autoclave is a portable steam unit heated by an electric element or elements depending on the model For sterilization of wrapped loads the vacuum unit creates a vacuum in the chamber The unit is supplied to suit the mains electrical supply shown in the technical data section 2 2 The autoclave is electronically controlled and has various sterilizing programmes as detailed in the Instructions for Use For typical sterilization cycle times refer to the technical data section 2 3 The required sterilizing cycle is selected by pressing various buttons on the control panel LEDs illuminate to show which temperature and cycle have been selected The cycle is started by pressing the start button The sterilizing drying cycle proceeds automatically until complete and the printer if fitted starts automatically when the start button is pressed 2 4 Indication of cycle status or error codes during a cycle are provided by the digital display and printer if fitted 3 Operating controls amp display 3 1 The following operating controls and displays are all positioned on the
21. for the 121 C cycle is set to 122 5 C and the 134 C cycle is set for 135 5 C 5 8 Operating information relating to the printer is given in the Instructions for Use 5 9 The overall time for the cycle is not fixed and depends on many factors such as the supply voltage the load and the ambient temperature However the power board will ensure a satisfactory sterilization cycle even when these factors vary over wide ranges Typical cycles details are explained in section 6 6 Cycle details 6 1 Atypical vacuum cycle e g 134 Wrapped extended cycle progresses through several stages The following information provides details of the controls actuated and the resultant functions performed by the autoclave during selection and running of a typical vacuum sterilization cycle Note The water reservoir must be above minimum and the door must be closed Select temperature 134 with B2 button 121 light extinguished 134 light illuminated or vice versa for each press of button B2 Push B8 button Wrapped LED illuminated all other cycle LED s extinguished Push B5 button Extend LED illuminates gives sterilization time of 18 minutes at 134 C Push B6 button First LED on progress indicator illuminates If fitted the printer records time and cycle data Mains relay is on Vacuum pump is on Vacuum inlet valve open All other valves closed Wait for pressure to drop to 32kPa Vacuum inlet valve closed
22. level sensors together Eighth ST SM33I P29 51 ESCHMANN 8 Part removal and replacement WARNING 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 see 8 1 3 When the door is opened beware of possible very hot water or steam escaping from the chamber 8 1 8 1 1 All the major parts of the autoclave can be easily removed and replaced following removal of the autoclave cover as detailed in section 8 3 It is important that the autoclave is recalibrated after certain part replacement where this is required it is called for at the end of the relevant part replacement procedure DO NOT FORGET TO REPLACE COVERS BEFORE CALIBRATION After all maintenance procedures always run atleast one complete cycle to check all functions are working correctly General 8 1 2 The vacuum pump can be refurbished if performance deteriorates as an alternative to complete replacement see section 8 35 8 1 3 Before any maintenance procedure especially in the case of an electrical fault always check the chamber pressure is close to or at ambient before attempting to open the door In the case of no electrical power the chamber pressure can be checked
23. of Eschmann Holdings Limited LS5 Little Sister QuickVac and SES2555 are trade marks of Eschmann Holdings Limited Patents Patents Pending plus Pat US5090033 and Pat GB2238407 Copyright 2003 All 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 d If the CE mark is affixed to the product it indicates compliance with Council Directive 0473 93 42 EEC of 14 June 1993 concerning medical devices ST SM33l September 2003 0473 CONTENTS 1 Introduction 1 Introduction 2 Description 2 Description 3 Operating controls amp display 3 Operating controls amp display 4 Push buttons aaa aa 4 Digital displays aaa 5 IMOICALOFS 5s a 5 4 Autoclave components 4 Autoclave components 5 Operation cycle 5 Operation Cycle 6 Cycle details 6 Cycle Details jus nai ard n ad 10 7 Maintenance 7 Maintenance llle eese 12 7 4 Special functions 12 7 2 Protectedfunctions 12 7 3 Errors and faults iii ii 12 P
24. on the safety pressure gauge see 21 Fig 3 behind the door cover Note that the door cover can be released when the door is locked shut as detailed in section 8 3 1 Note The door cannot be opened on later models fitted with the pressure door lock until the pressure has fallen below 0 2Bar Gauge 8 1 4 After part replacement always ensure that all cable ties removed are replaced correctly after reassembly 8 2 Fuse renewal Fuses are fitted at the front of the autoclave item 8 Fig 2 For fuse ratings refer to TECHNICAL DATA To extract a fuse switch off the unit and disconnect from the mains power supply insert a screwdriver or small coin in the slot of the fuse holder and twist it counter clockwise After inspecting or renewing a fuse reverse the above procedure to re secure fuse holder DO NOT OVER TIGHTEN See section 8 28 if the fuse holder assembly is to be replaced P30 51 8 3 Cover removal and replacement 8 3 1 Front cover removal see warning above section 8 1 To remove the front cover place the end of a flat bladed screwdriver into the slot behind the plate marked B in Fig 2 and depress the sprung loaded door interlock pin see 8 3 4 for orientation of this pin when re engaging it Plate B can only be removed using a TX20 Torx pin tamperproof screwdriver In the event that the door is locked shut access to plate B in Fig 2 can be gained by opening the printer door item 15 F
25. right hand side of the reservoir Partly withdraw the reservoir with the cap and condensing coil in place Cut off the cable tie taking care not to damage the pipe from the silicone chamber fill pipe where it connects to the fitting at the base of the reservoir and remove the chamber fill pipe Disconnect the reservoir level sensors electrical connections and then remove the reservoir completely from the autoclave 8 5 2 Cleaning To clean the reservoir first release the cap and withdraw the condensing coil carefully from the reservoir Wash the condensing coil and reservoir using a detergent solution Teepol L is recommended used as detailed by the manufacturer using a suitable bottle brush to clean inside the reservoir Rinse all components thoroughly with tap water to remove any residual detergent Then rinse all components thoroughly with distilled or deionized water or water treated by reverse osmosis to remove any residual tap water Allow components to dry and reassemble the condensing coil back into the reservoir ensuring that the silicone pipe on the end of the condensing coil lies along the base of the reservoir 8 5 3 Replacement If replacing the reservoir completely remove the old condensing coil and clean it before reassembly as detailed above Also remove the two cover retaining spigots screw and shouldered washer item 30 Fig 3 the water level sensor and the fill pipe spigot and large washer from the old reservoir
26. that the flow is in the correct direction Check finger guard is in place 8 16 Bacterial air filter Remove and replace the bacterial air filter item 1 Fig 2 as detailed in the Instructions for Use 8 17 Gauze filter Remove clean and or replace the gauze filter item 6 Fig 2 as detailed in the Instructions for Use 8 18 Printer Remove the printer item 5 Fig 2 by reversing the fitting instructions provided in the Instructions for Use To replace the printer follow the notes provided in the Instructions for Use 8 19 Safety valve To remove the safety valve item 24 Fig 3 first remove the top screvv securing the reservoir spout cup loosen the bottom screvv and rotate the cup out of the vvay To remove the safety valve unscrew it from the chamber neck ring When replacing the safety valve clean the female thread in the neck ring and apply PTFE tape to the new valves ST SM33I thread Rotate the spout cup back into position replace the top screw but do not tighten screws Ensure the safety valve shield item 27a Fig 9 sheet 2 is positioned correctly as shown in Fig 9 sheet 2 Fit the front cover but not the top cover and then tighten the spout cup screws with the spout cup central to the front panel Finally for vacuum units perform a leak test special function F4 8 20 Band heater temperature sensor To remove the band heater temperature sensor item 28 Fig 3 release the sensor wire from it s conn
27. the exposed nut on the top of the valve body Remove the valve stem and internal parts clean them and the inside of the valve seating Reassemble taking care to return parts in the correct sequence and do not overtighten the coil retaining nut Finally reattach the electrical connection release the clamp on fill pipe or fill reservoir if carried out at 8 4 2 and test the valve function using protected function P7 8 4 5 To replace the valve completely release the two retaining screws and shakeproof washers from the base of the valve body and discard Reattach the new valve ensure coil has the correct electrical rating 24V 14W and the small O ring part number 391075 is in place reconnect the electrical connection and pipe to the valve body securing it with a cable tie using Hellerine oil part number 670170 sparingly Test the valve function using protected function P7 ST SM33I 8 5 Reservoir 8 5 1 Removal To remove the reservoir assembly item 5 Fig 3 for cleaning or replacement drain the reservoir as detailed in the Instructions for use Cut off the cable ties taking care not to damage the pipe from the silicone discharge and vacuum exhaust pipes where they connect to the top of the condensing coil item 31 Fig 3 Loosen the jubilee clip from the reservoir filling pipe item 32 Fig 3 and remove both the discharge and exhaust pipe from the reservoir Remove the reservoir retaining screws and washers from the left and
28. the minute to increase the minute press B2 or B3 to reduce it when correct press button B6 display D1 shows FO display D2 and D3 will be blank The time and date are now set Seconds were set to zero when B6 was pressed Press B7 with the door open to continue normal use ST SM33I TABLE 3 PROTECTED FUNCTIONS See section 7 2 which provides instructions for accessing these special functions and Fig 1a amp 1b foldout at the back of this manual DISPLAY AND FUNCTION METHOD OF USE PO Print last 5 failed cycles This protected function prints a summary of the last five failed cycles Display D1 shows PO Press button B6 The printer prints a summary of the last five failed cycles containing the following information for each cycle Cycle temperature Cycle type the word Extended if the cycle was extended Cycle count Date and time at start of cycle Date and time at end of cycle and the word Error followed by the error number Display shows FO With the door open press B7 to exit back to normal mode or B5 to cycle through and gain access to other protected functions by pressing B6 when the correct P number is displayed P1 Print last failed cycle This protected function prints a summary of the last failed cycle Display D1 shows P1 Press the button B6 The printer prints a summary of the last failed cycle containing the following information Cycle temperature Cycle type the word Extended if the cycle was ext
29. to open a Chamber pressure too high a Wait for pressure to drop and try again Door open solenoid programmed not operate with chamber pressure above 115kPa and 115 C b Chamber pressure too low b Vacuum in chamber holding door closed check all valve functions Also check door seal and face clean c Calibration fault c Recalibrate unit see 7 4 d Drain tube tap trapped d Release drain tube tap from between door and panel 47 Error 47 displayed Steam bleed valve failure a Steam bleed valve fault a Valve failed to open during purge see 30c b Chamber temperature sensor fault b See 13b 48 Error 49 displayed Fan failed to cool chamber during vacuum pulse a Fan not operating a Check fan connections and function etc b Grill blocked limiting air flow b Check air flow into chamber via grill etc 49 Error 50 displayed Band heater sensor reading too high a Calibration error a Recalibrate autoclave see section 7 4 b Band heater sensor fault b Replace sensor see section 8 20 and recalibrate 50 Error AO displayed Test Abort Cycle function selected from PC via Support Application This function aborts the cycle running error 100 recorded for cycle ErrAO on autoclave display This is useful if the part of the cycle under investigation has been passed allowing the remaining part of the cycle to be aborted to save time Note Loads used during test should be considered non sterile
30. was connected to Release switch from the base by removing two retaining screws and shakeproof washers Free the bulb inside chamber by releasing the clamp around bulb and heater element Remove capillary tube and bulb through chamber wall by undoing the tubes captive nut from the chambers neck ring Release capillary tubing from all constraints noting the path taken 8 24 2 Replace new thermostat and bulb by reversing the above using a new O ring seal part number 391189 and ensure it is correctly in place around the capillary tube plug before fitting When repositioning the clamp and bulb they should be approximately 50mm in from the front of the elements left hand segment viewed from the door end of the chamber On non vacuum units lay the bulb into the clamp on top of the cycling auto reset thermostat bulb Fold the clamp legs over to trap the bulb or bulbs with a large pair of pliers Ensure the bulb or bulbs are held tight in the clamp and that the tube or tubes are routed away from above the element so that they are not damaged by the chamber furniture Finally for vacuum units perform a leak test special function F4 8 25 Cycling thermostat non vac units To remove and replace the cycling thermostat item 3 Fig 4 follow the procedure for the reset thermostat see section 8 24 Both items are removed and replaced using the same procedure P34 51 8 26 Thermal fuse non vac units IMPORTANT If the thermal
31. 0 displayed Time to create chamber pressure drop too long time out a Chamber integrity fault a See 7b b Vacuum pump fault b Vacuum pump item 9 Fig 3 failed or electrical power or pipe connections to it faulty See section 8 14 to replace pump If pump running check tubing to vacuum solenoid valve not leaking and pumps diaphragm and valves see 8 35 Check pipe from chamber to pressure transducer on power board connected and not leaking Pressure transducer fault change power board see 8 7 c Vacuum inlet valve fault Vacuum inlet solenoid valve item 3 Fig 3 faulty or connections or supply to it faulty or failed See 8 4 to replace valve d Wet warm chamber Chamber conditions at start of cycle too wet and or warm Restart cycle with dryer colder conditions continued on page 25 P24 51 ST SM331 FAULT DIAGNOSIS Continued 16 Error 13 displayed Steam quality error temperature pressure relationship outside set limits a Airin chamber a Check chamber integrity see 12b Obscure load air entrapped adjust load and try cycle again Temperature and or pressure sensors faulty orin need of re calibration see 8 11 and 8 7 to change povver board b Steam bleed valve blocked b Check and clean replace as required see section 8 4 17 Error 14 displayed Time to achieve vacuum before drying outside set limits time out a Chamber integrity fault a See 12b b Vacuum pump fault b See 15b c Vacuum inlet va
32. 1856 and Power PCA Part Number 111653 Mains Filter not fitted If a Mains Filter is not fitted then before replacing the Power PCA which should be replaced with the latest version Part Number 111653 now common to both vacuum and non vacuum autoclaves ensure that both a Mains Filter is fitted see illustration below and the existing Power Loom Part Number 391288 is upgraded Then replace the Power PCA as detailed in section 8 7 The Mains Filter can be supplied as part of a kit Part number 111700 which includes all the items required to fix it to the autoclave as shown in the illustration below Ensure the new Power Loom Part Number 111856 is fitted or the existing Power Loom Part Number 391288 is upgraded by using loom upgrade kit Part number 111727 see The existing Power Loom Part number 391288 can be modified to eliminate replacing the whole loom by using loom upgrade kit Part number 111727 This kit comes complete with a leaflet providing full fitting instructions The loom upgrade kit also provides the parts required to upgrade the crimp connections to the Immersion heater Band heater Fuse holder and Mains switch 111703 Mains filter 307215 M4 Plan washer 111521 Nut M4 Nyloc 307163 Washer M4 internal shakeproof 710215 Screw M4 x 8mm soc cap hd Parts and fixing detail for Mains Filter ST SM33I P37 51 amp ESCHMANN NOTE The fixings screws nuts washers etc for each part ar
33. 4 shakeproof Nut 4BA Link primary lock solenoid Pin 4mm x 16mm Sellok for solenoid spindle Pin Sellok 4mm x 25mm Washer PTFE Catch magnetic vacuum autoclave only Nut M4 Screw M3 x 6 Pozi head Washer M3 shakeproof Pressure relief valve Safety valve shield Chassis and base plate assembly Plastic spacing washer 1 19mm Plastic spacing washer 0 84mm Bracket pressure door lock Pressure door lock assembly Screw M4 x 12mm PV Pan head Pozi Screw M6 x 25mm Soc cap head use retainer 306033 Spacer MISCELLANEOUS Grease door mechanism Pipe adhesive chamber plugs PTFE Tape Screw retainer Cable tie Universal rack Vertical cassette holder Dental handpiece furniture set vacuum units only Qty Spares a DA Ss SH SH Ss HS Sp pm 0 D an a an eSB Aa aa SHB SS pO HK SS NNNNDD HA AH AH AH HS LI As reqd As reqd As reqd As reqd As reqd Q at a NI Not illustrated P47 51 amp ESCHMANN 9 TECHNICAL DATA 9 1 Electrical Supply 230V 50 60 Hza c For use with alternating current Loading at 230V 2 0kKW 10A max Fuses T10A Part No 301817 x2 T3 15A Part No 696207 x1 9 2 Sterilizing data Standard Sterilizing time at 134 137 C is 3min 5sec at 121 124 C is 15min and at 134 137 C extended is 18min but all can be extended All Drying time if selected is from 17 minutes but can be extended Operating pressure at 121 C is 1 03 bar at 124 C is 1 23
34. C to avoid an Error 38 and the door closed before selecting F5 Connect a needle valve calibrated to provide a leak of between 1 0 and 1 3kPa per minute via a short length of 6mm hose to the antibacterial filter before pressing B6 F6 Steam penetration test Vacuum Autoclave ONLY Note To conduct this test the door must be closed before selecting F6 F7 Disinfect function Note To conduct this test the door must be closed before selecting F7 F8 Adjust date and time P16 51 METHOD OF USE Press button B5 and wait until display D2 and D3 go blank To resume normal use switch off the mains switch item 10 Fig 2 and then switch back on or press B7 with the door open With display DI showing FO close the autoclave door if open press B5 until display D1 shows F5 press B6 Indicator A4 will flash press B7 to open the door indicator A3 will illuminate Close the door A4 will illuminate press start button B6 This starts an automatic air detection test which checks if the autoclave system detects a leak if present it performs a leak test similar to F4 first to ensure no leaks are present then admits air through the needle valve Display D3 shows chamber pressure after a few minutes display D2 will show pressure rise to the nearest 0 1kPa After a further 10 minutes if pressure has not risen by more than 1 3kPa display Display D2 will then show PR55 or FAIL according to result test aborts on FA iL
35. M33I Short the chamber maximum vvater level sensor to the door the third LED on progress indicator A2 illuminates Operate the door closed microswitch the fourth LED on progress indicator A2 is extinguished and the fifth LED on progress indicator A2 is illuminated Operate the door locked microswitch the sixth LED on progress indicator A2 is extinguished and the seventh LED on progress indicator A2 is illuminated Short the two reservoir water level sensors together the eighth LED on progress indicator A2 illuminates Press button B7 display D1 shows P7 all other displays are blank To exit press B7 with the door open or B5 to cycle through and gain access to another protected functions When the correct P number is displayed by pressing B6 When service is carried out in response to a service request from the autoclave it is necessary to reset the service request flag in the EEPROM This occurs automatically if the unit is re calibrated It can also be done through the protected function P8 Display D1 shows P8 Press button B6 The autoclave beeps The service request is set for 11 months later and will print Service and Certification due Display D1 shows P8 To exit press B7 with the door open or B5 to cycle through and gain access to another protected functions When the correct P number is displayed by pressing B6 This function changes the configuration file to disable or to enable the facility which allows the us
36. P28 51 ST SM33I TABLE 5 PROTECTED FUNCTION P7 QUICK REFERENCE TABLE NOTES 1 Use button B4 to switch the activated component on or off State is indicated on or off by LED adjacent to button B4 on on off off If testing 230V items the mains relay should be on or left on DISPLAYED ADC VALUES scroll with button B1 Display D2 ADC analogue to digital value displayed in D1 P1 P2 ti t2 t3 First pressure transducer Second pressure transducer NB Not used First chamber temperature transducer Second chamber temperature transducer Band heater temperature transducer COMPONENT ACTIVATION scroll up with button B2 down with button B3 Display D3 Component selected on or off by button B4 1 2 3 4 5 6 F 8 9 14 Water discharge valve Water fill valve Air admit valve Fan Steam bleed valve Vacuum inlet valve Door open solenoid Door close solenoid Mains relay Water pump Vacuum pump see note 2 above Band heater see note 2 above Chamber immersion heater see note 2 above Audible beeper SENSOR amp MICROSWITCH TEST Action to activate component Progress display LED Illuminated Short chamber minimum water level sensor to door Second Short chamber maximum water level sensor to door Third Operate door closed microswitch Operate door locked microswitch Fifth Fourth extinguished Seventh Sixth extinguished Short reservoir water
37. PT on the chamber door The pressure test port is for inserting a pressure probe to monitor chamber pressure Spare test port Fig 3 item 202 Spare temperature or pressure test port for use as required during test procedures Membrane key pad Fig 2 item 3 amp Fig 1a amp 1b Incorporates programme selector buttons digital display windows and programme indicator LEDs It is connected to the display board via an 11 way ribbon cable Pressure transducer on the power board The pressure transducer monitors the pressure in the chamber and generates chamber pressure signals for cycle monitoring control and display Note Items 15 and 20 are shown with twinlocks fitted ST SM33I Printer Fig 2 item 5 The printer if fitted starts automatically when acycle is selected and will print out hardcopy of the sterilization cycle Details of printer outputis given in the Instruction for Use Water pump Fig 4 item 2 Non vacuum units only Used to pump water into the chamber from the reservoir The pumpis operatedfrom a 24V d c supply generated and signalled from the power board Fan Fig 3 item 10 The fan draws air over the chamber for rapid cooling between cycles The fan is electrically operated from the 24V supply and signalled from the power board Band heater Fig 3 item 4 Vacuum units only The band heater heatsthe chamber during the drying cycle The heating element is controlled by a solid state relay on the
38. about 200 mBars on the calibrated instrument then press button B5 this closes the vacuum solenoid valve but leaves the pump running Use buttons B2 and B3 to set the value in display D1 to the current Continued on page 18 ST SM33I P17 51 ESCHMANN TABLE 3 continued PROTECTED FUNCTIONS DISPLAY AND FUNCTION METHOD OF USE pressure indicated on the calibrated instrument Note The pump is running during this calibration and the vacuum solenoid valve can be toggled open and closed by pressing B5 this enables chamber pressure to be adjusted if required Press button B6 until a beep is heard to save calibration data Press button B7 wait for the pressure to return to within 5 mBars of atmospheric Display D1 shows P4 With the door open press B7 to exit back to special function FO or B5 to cycle through and gain access to other protected functions by pressing B6 when the correct P number is displayed P5 Low and high temperature calibration Insert the required probes from the calibrated instruments and P18 51 or chart recorders e g chamber temperature probe chamber pressure probe and band heater probe as detailed in section 7 4 Replace the autoclave cover during calibration The door must be closed for this protected function Display DI shows P5 press button B6 For Non Vacuum A 121 C Naked without Drying cycle is started For Vacuum A 121 C Naked with Drying cycle is started Note For both the above
39. ad 11 way ribbon cable J3 printer 16 way ribbon cable J5 and serial port 10 way ribbon cable J2 Battery to maintain real time clock Microprocessorto control the autoclave This receives information from the front panel and all the sensors temperature pressure door microswitches chamber water level reservoir level etc If any errors are detected they are shown on the display and printed if a printer is fitted as error codes Reset thermostat overheat Fig 3 item 25 The reset thermostat is fitted underneath the unit and is connectedin series with the chamber heater element The reset thermostat is operated by a fluid filled capsule clamped to the heating element providing protection if the temperature of the heater surface exceeds 250 C It will remake electrically if the reset P8 51 button underneath the cabinetis pressed after giving the heater elementtime to cool Position is indicated by a label on the left hand side of the unit Cycling thermostat Fig 4 item 3 Non vacuum only This is used to control the temperature of the chamber heating element in conjunction with the microprocessor during drying Band heater overheat cutout Fig 3 item 29 Vacuum units only The band heater cutout is fitted on the band heater andis connected in series with the band heater It contains a bimetallic disc thermostat which operates ifthe temperature ofthe heater surface exceeds 250 C The cutout will remake ele
40. be replaced as a complete unit There are no user serviceable parts within However before replacement check that all pipework to the pressure door lock are not blocked or damaged and that the M6 screw on the plunger has not come loose If either of the later are applicable replace as below 8 36 2 To replace the pressure door lock release the pipe from the top connection taking care not to damage the pipe If required also replace the pipe set part number 111805 Release the four M4 retaining screws and remove the pressure door lock Remove from the old lock the M6 screw and the spacer for fitting to the new pressure door lock part number 427035 8 36 3 Fitthe old M6 screw and the spacer to the new pressure door lock using threadlock part number 306033 on the screw thread Replace the pressure door lock assembly and connect the tubing to the top connection using atie wrap part number 695777 Also use a tie wrap to hold the pipe in place Test function after replacement to ensure correct operation P36 51 ST SM33I APPENDIX 1 Before replacing a Povver PGA check to see if the autoclave is fitted vvith a Mains Filter Part number 111703 as shown in the illustration below item number 1 Then proceed as applicable Mains Filter fitted If a Mains Filter is fitted the Power PCA Part Number 111653 can be replaced as detailed in section 8 7 In this case the autoclave will already be fitted with the new Power Loom Part Number 11
41. buttons to set the value in display D1 to the current temperature indicated on the calibrated instrument Continue to adjust the temperature in D1 until a stable condition is achieved Note The sterilisation time can be extended if required by pressing B5 Press button B4 until beep is heard Display D1 shows the new temperature value Press button B1 display D1 shows P followed by an estimated pressure value based on the current temperature Use buttons B2 and B3 to set the value in display D1 to the current pressure indicated on the calibrated instrument Press button B4 until beep is heard Display D3 shows new pressure value If it is required to test the safety valve press and hold buttons B2 and B7 until beep is heard the 121 LED illuminates the temperature rises towards 148 C approx the process display A2 returns to the seventh LED illuminated display D1 shows P5 Wait for the pressure to reach about 385kPa the safety relief valve starts to release the pressure from the chamber note valve limits are 2 72 3 13Bar Gauge Press and hold buttons B5 and B7 the water discharge valve opens process display A2 advances to the fourteenth LED Non Vacuum The steriliser completes the cycle normally display D1 shows P5 all other displays are blank Continued on page 19 ST SM33I TABLE 3 CONTINUED PROTECTED FUNCTIONS DISPLAY AND FUNCTION METHOD OF USE Vacuum The steriliser continues onto the drying phase vvait for ba
42. ction 8 81 2 Replace the pump by the reverse of the removal procedure ensuring the pipes are connected to the correct pump ports using Hellerine oil part number 670170 sparingly with new cable ties Refill the reservoir if drained or remove the pipe clamp 8 32 Test probe port amp pressure safety gauge Replacement of a test probe port or pressure safety gauge is self explanatory but ensure the sealing face is clean and use PTFE tape when refitting It is not essential that the gauge needle points up vertically at ambient pressure Finally for vacuum units perform a leak test special function F4 8 33 Door To replace an autoclave door in the unlikely event that it has been damaged first remove the water level sensors see 8 23 the three test probe ports and pressure safety gauge see 8 32 The door is removed by releasing the two screws marked A in Fig 3 but not removing them from the hinge pin Replacement is the reverse but refer back to sections 8 32 and 8 23 Note that a complete door assembly is available Part No 391212 8 34 Band heater resettable thermostat To replace the band heater resettable thermostat item 29 Fig 3 remove the electrical spade connections and the nuts and washers that clamp it to the band heater Replacement is the reverse of removal but ensure the thermostat is in contact with the band heater and the contact area is clean and not corroded 8 35 Vacuum pump maintenance 8 85 1 If the vac
43. ctrically if the reset button is pressed when the heater has cooled Mains fuses Fig 2 item 8 Two fuses are on the front panel of the unit rated as shown in TECHNICAL DATA connected in the mains supply to the unit Transformer Fig 3 item 27 The transformer converts the mains voltage to 20V a c It is rated at 75VA Waterfill solenoid valve Fig 3 item 11 The waterfill solenoid valve controls the entry of water into the chamber It is electrically operated from the 24V d c supply generated and signalled from the power board Water discharge solenoid valve Fig 3 item 16 The water discharge solenoid valve is used at the end of the sterilizing cycle to allow water and steam vapour from the chamberto pass backinto the reservoir The valve is electrically operated from a 24V d c supply generated and signalled from the power board Steam bleed solenoid valve Fig 3 item 2 The steam bleed solenoid valve is used at the beginning of the heating phase to allow air and steam vapour to pass back into the reservoir and at the start of discharge to remove ST SM33I pressure before the discharge valve opens The valve is electrically operated from a 24V d c supply generated and signalled from the povver board Safety valve Fig 3 item 24 The safety valve is factory set Ipressure rating 2 85Bar Gauge to release excess elevated pressure from within the chamber It is a primary safety device and must not be readjusted It shoul
44. d operate between 2 72 and 3 13Bar Gauge Air admit solenoid valve Fig 3 item 1 Vacuum units only Theair admitsolenoid valve controls the admission of air filtered by the Bacterial Filter Fig 2 item 1 into the chamber during the drying phase Vacuum solenoid valve Fig 3 item 3 Vacuum units only When open this valve allows the vacuum pump to suck air and steam from the chamber The valve is electrically operated from a 24V d c supply generated and signalled from the power board Vacuum pump Fig 3 item 9 Vacuum units only The vacuum pump is a two stage diaphragm pump and used to suck air and steam from the chamber The pump is electrically operated from the mains supply and signalled from the power board Bacterial Filter Fig 2 item 1 Vacuum units only The bacterial filter filters the air entering the chamber during the drying phase Chamber temperature sensors Fig 3 item 23 These are used to sense the chamber temperature Two are provided within the single sensor unit to provide controller accuracy Band heater temperature sensor Fig 3 item 28 Vacuum units only The band heater temperature sensor is used to control the band temperature during the drying phase Thermocouple entry port Fig 3 item 22 Marked TT on the chamber door This is used to insert a thermocouple into the chamber to allow the operating temperature to be measured and if necessary adjusted Pressure test port Fig 3 item 152 Marked
45. d the water pump stops Only on non vacuum autoclaves Press button B2 display D3 shows 11 Press button B4 B4 LED illuminates and the vacuum pump operates Press button B4 B4 LED goes off and the vacuum pump stops Only on vacuum autoclaves Press button B2 display D3 shows 12 Press button B4 B4 LED illuminates and the band heater is on Press button B4 B4 LED goes off and the band heater is off Only on vacuum autoclaves Press button B2 display D3 shows 13 Press button B4 B4 LED illuminates and the immersion heater is on Press button B4 B4 LED goes off and the immersion heater is off Press button B2 display D3 shows 14 Press button B4 B4 LED illuminates and the beeper is on Press button B4 B4 LED goes off and the beeper is off Press button B2 display D3 shows 1 Press button B4 B4 LED illuminates and the water discharge valve opens Press button B3 B4 LED goes off and the water discharge valve closes Short the chamber minimum water level sensor to the door the second LED on progress indicator A2 illuminates Continued on page 21 Ensure mains relay was left on when D3 shows 9 above to perform this test ST SM33I TABLE 3 CONTINUED PROTECTED FUNCTIONS See section 7 2 DISPLAY AND FUNCTION METHOD OF USE P7 I O Test cont d P8 Service completion P9 Enable disable adjustable drying and sterilization times ST S
46. e detailed in the parts list following each item 5 Note Illustration shows 3 twinlocks fitted product now supplied with only 1 and two blank plugs Also pressure door lock not illustrated Part view covers on Fig 7 Parts list 1 Electrical components shown covers off P38 51 ST SM33I Item 2 NI 3a NI 4 NI 5 5a NI 14 NI 154 16 17 20 21 22 non vacuum units only Part No 391318 301817 391319 391188 391145 391157 111691 710219 710731 391299 711348 391324 391323 391288 391388 301842 391298 307249 710731 391036 391050 391067 416149 425181 420024 391069 391070 391061 391054 710734 391086 391084 391086 710734 391189 391040 391086 710734 391189 391325 307249 710731 391060 709861 710731 307046 391066 709861 391048 391065 709861 391048 ST SM33I PARTS LIST 1 ELECTRICAL COMPONENTS Description Fuse holder Fuse 10 Amp Switch mains Fuse Switch cover Socket IEC Fan Finger guard Screw M4 x 16mm cap head was 10mm Washer M4 shakeproof Ribbon cable 40 way power to display PCA Ribbon cable clamp Loom signal 2 valves fan w l sensors microswitches Loom signal 1 mains transformer water pump water reservoir door solenoids Loom power see Appendix 1 Loom water level Grommet
47. e entry ports check and or replace see 8 32 door face damaged check and or replace see 8 33 water level sensors in door check and or replace see 8 23 c Large or obscure load c Try acycle with a smaller load and ensure load can drain or empty d Chamber too hot at start d Allow unit to cool and try another cycle e Bench top not level e Ensure autoclave is level to enable correct water fill levels 13 Error 06 displayed Chamber temperature too low during sterilization a Power to heater fault a Low mains voltage check supply Heater item 4 Fig 4 gone open circuit check and or fit new heater see 8 12 Solid state relay or mechanical relay on power board item 26 Fig 3 failed fit new power board see 8 7 Thermal fuse open circuit replace fuse see 8 26 b Chamber temperature sensor fault b Chamber temperature sensor item 23 Fig 3 failed or connections to it faulty see 8 11 to fit new sensor or in need of calibration see 7 4 Control signal path corruption check wiring connections etc 14 Error 07 displayed Chamber temperature too high during sterilization a Chamber temperature sensor fault a Chamber temperature sensor item 23 Fig 3 failed or connections to it faulty see 8 11 to fit new sensor Control signal path corruption check wiring connections etc b Power board fault b Solid state relay or mechanical relay on power board item 26 Fig 3 failed fit new power board see 8 7 15 Error 1
48. e the power board item 26 Fig 3 release the two thumb nuts at the top of the board taking care not to loose the spacers between the board and supports Carefully tilt the board away from the reservoir and pull it clear from the base clip with the insulation sheet When free remove all the connecting cable clips from their sockets on the power board Cut off taking care not to damage the pipe the cable tie around the silicone pipe where it connects to the top of the pressure transducer 8 7 2 Replacement is simply the reverse of the removal procedure but ensure the correct procedures are used when handling the PCA to protect it from static discharge Ensure the spacers and the insulation sheet are returned to their original positions and the silicone pipe is reconnected to the pressure transducer using Hellerine oil part number 670170 sparingly with a new cable tie Note When a new power board is fitted it will be necessary to recalibrate the autoclave see Calibration section 7 4 8 8 Door microswitches To remove and replace either of the door microswitches items 18 and 19 Fig 3 remove the two truarc retaining washers from the microswitch location pillars Expose the soldered connections to unsolder the join and release the microswitch Replacement is the reverse of removal but ensure the correct microswitch is used they are not the same the insulation sleeve is replaced after soldering the connection and new retaining wash
49. e valve Fig 3 item 16 The vacuum pump Fig 3 item 9 on vacuum units also discharges into the water reservoir P6 51 Reservoir water level sensor fitted in base of reservoir position indicated in Fig 4 item 1 The water level sensor inthe reservoir will stop the cycle being started if there is insufficient water in the reservoir to complete achamberfill Indicator A1 will be illuminated in alow water condition Gauze filter Fig 2 item 6 This filters the water leaving the chamber easily removed for cleaning Mains switch Fig 2 item 9 This switch controls mains power to the autoclave Heating element Fig 3 item 13 and Fig 4 item 4 The heating elementconsists of asingle immersion element inside the chamber The heating elementis controlled by a solid state relay on the Power PCA Fig 3 item 26 and protected from overheating by a manual reset thermostat Fig 3 item 25 Refer to TECHNICAL DATA for heater element loading Power board Fig 3 item 26 There are a number of key functions provided by the power board Solid state relays SSR control the mains supply to the water heater element 10A band heater 10A and vacuum pump 2A Mechanical relay provides additional safety forheaters and pump circuits Connections for display board 40 way ribbon cable J1 24 volts from transformer J2 temperature sensors J3 solenoid valve drives door microswitches and water level sensors J4 mains to heater
50. ection to the wiring loom and remove the securing nut and shakeproof washer Refit by reversing the above and ensure that the sensor is in tight contact with the band heater Note When anew temperature sensor is fitted the band heater must be recalibrated see section 7 4 8 21 Mains switch To remove and replace the mains switch remove the cable tie securing the cover lift the cover and remove the four spade connectors from the switch noting the terminals each was connected to Release the switch from the base tray by pressing the retaining lugs in on each side at the back of the switch Replace switch by reversing the above ensuring correct orientation and the cover and cable tie are replaced 8 22 Band heater 8 22 1 Toremove the band heater item 4 Fig 3 remove the band heater temperature sensor see section 8 20 and the power board see section 8 7 Remove the heater spade connections and release the heater clamp bolts Carefully slide heater off the chamber vertically by allowing the heater to open up into a U shape 8 22 2 Refit a new band heater use threadlock part number 670650 on retaining screws by reversing the above referring to sections 8 20 and 8 7 for details on how to refit the temperature sensor and power board 8 23 Chamber water level sensors To remove clean and replace parts of the chamber water level sensors items 14 and 17 Fig 3 release the door cover to gain access to the fixings and wirin
51. een set as required Note When B2 is pressed and no indicator lights are on display D2 will show either d 5 to indicate the disinfect cycle or KHOL to indicate the Hollow Naked cycle These can also be enabled or disabled by pressing button B4 Autoclaves without button B9 will still display the option to enable or disable the Hollow Naked cycle even though the cycle cannot be run Note Pressing button B3 will enable all programmes it is not possible to disable all programmes When button B5 indicator illuminates this indicates an extended cycle Press button B6 until a beep is heard all the programme enabling or disabling settings made above are stored in memory display D1 shows P6 all other displays or indicators are off To exit press B7 with the door open or B5 to cycle through and gain access to another protected functions When the correct P number is displayed by pressing B6 P7 I O Test This test verifies all the inputs and outputs to the Microcontroller When familiar with the use of this protected function see Table 5 for a quick reference chart which details how to use P7 to check individual components rather than progressing through each one as detailed below Before using Table 5 ensure you know how to activate and leave this protected function The water reservoir should be empty if not the 8 LED of the progress indicator A2 will be on throughout this test and it will not be possible to tes
52. eet Parts list 3 General assembly 44 Fig9 Sheet2 Parts list 3 General assembly 46 Fig 10 Schematic electrical diag non vacuum 49 Fig 11 Schematic electrical diag vacuum 50 Appendix 1 APPENAK I sende sd cies oor n Reed weeks 37 ESCHMANN 1 Introduction WARNING Read this service manual before servicing the autoclave and keep it in a safe convenient place for future reference Always have at hand the Instructions for Use as supplied with the autoclave and be familiar with the cautions and warnings contained within it The servicing of this autoclave should be under the control of a competent person with sterilization training The autoclave should only be serviced as specified by the manufacturer and detailed within these service instructions 1 1 This service manual applies to the following autoclaves fitted with software version 1 51 or later software version is displayed briefly when the autoclave is switched on or B1 is pressed SES Little Sister 5 Autoclave from Serial Number L5NA3C1001 REF 87 060 01 SES Little Sister 5 Vacuum Autoclave from Serial Number L5SA3C1001 REF 87 060 25 SES QuickVac Vacuum Autoclave from Serial Number LQSA3D1001 REF 87 061 47 SES 2555 Autoclave from Serial Number SSNA3C1001 REF 87 060 61 SES 2555 Vacuum Autoclave from Serial Number S5SA3C1001 REF 87 060 73 SES 2555 Vacuum Autoclave from Serial Number SQSA3D1001 REF 87 060 73 SES 2555 Au
53. ended Cycle count Date and time at start of cycle Date and time at end of cycle the word Error followed by the error number and up to nineteen lines containing the time temperature and pressure Display shows P1 With the door open press B7 to exit back to special function FO or B5 to cycle through and gain access to other protected functions by pressing B6 when the correct P number is displayed P2 Recall factory calibration This protected function recalls and copies the factory calibration to the field calibration area Display D1 shows P2 Press button B6 display D1 shows P21 Press and hold B3 and B5 buttons together until a beep is heard The factory calibration information overwrites the current field calibration Display D1 shows P2 With the door open press B7 to exit back to special function FO or B5 to cycle through and gain access to other protected functions by pressing B6 when the correct P number is displayed Always recalibrate after using this function see section 7 4 P3 Room Temperature Calibration This protected function performs a room temperature calibration Ensure autoclave is at room temperature before starting to eliminate calibration errors Insert the required probes from the calibrated instruments and or chart recorders e g chamber temperature probe chamber pressure probe as detailed in section 7 4 Replace the autoclave cover during calibration The door must be open and on the secondary catch for th
54. er to alter the preset sterilization and drying times when selecting a cycle Display D1 shows P9 Press button B6 D2 displays either d 5 if the function is disabled or n if itis enabled Press button B2 to enable it or press button B3 to disable it Press button B6 to confirm the setting The autoclave beeps to acknowledge Display D1 shows P9 To exit press B7 with the door open or B5 to cycle through and gain access to another protected functions When the correct P number is displayed by pressing B6 P21 51 ESCHMANN TABLE 4 FAULT DIAGNOSIS AND ERROR NUMBER DETAILS CLEARING ERROR DISPLAY AND RESTARTING A CYCLE WARNING If an error display appears during a cycle do not attempt to open the chamber door until the unit has cooled for safety below 50 C and internal pressure has fallen sufficiently to release the door see 3 Check pressure Loads whose cycles are aborted by one of these error displays should be treated as non sterile they should be re wrapped if wrapped and then sterilized by running the cycle again Also note the Caution after section 16 1 in the Instructions concerning the contamination of water in the reservoir 1 Record error number For future reference record the error number before clearing the display In the event of mains power failure power must be restored to the autoclave to achieve this 2 Clear error and reset autoclave To clear the error display and reset the autoclave
55. ers are used There may be some adjustment required after replacement ensure they operate and change state correctly 8 9 Door lock open solenoids To remove a door lock item 8 Fig 3 or open item 6 Fig 3 solenoid release the two securing screws and shakeproof washers from the top of the solenoid assembly To remove the solenoid slide it back open solenoid or forwards lock solenoid to clear the armature Remove the two electrical connections and if removing both solenoids note the electrical connections Replacement is the reverse of the removal procedure but ensure to move the lock closed and push the left hand solenoid right before tightening the left hand solenoid screws and move the lock P32 51 open and push the right hand solenoid right before tightening the right hand solenoid screws Ensure the door lock mechanism is working freely 8 10 Door lock magnetic catch vac only To replace the magnetic catch item 7 Fig 3 release its retaining screws and remove When replacing adjust the close solenoid Fig 3 item 8 until the primary lock is fully closed and secure 8 11 Chamber temperature sensors Disconnect the temperature sensors from the wiring loom by releasing their plug from its socket on the loom Remove the temperature sensors item 23 Fig 3 up and clear of the chamber Replace the sensor by the reverse of the removal procedure ensuring a new sealing washer is used and is in place Finally for vacuum unit
56. f specified drying time Nineteenth LED on progress indicator illuminates Mains relay off Three beeps sound If fitted the printer outputs TDE followed by the temperature and pressure values Cycle Complete followed by the time D1 displays time 6 2 A typical non vacuum cycle e g 134 unwrapped with drying extended cycle progresses through several stages The following information provides details of the controls actuated and the resultant functions performed by the autoclave during selection and running of a typical non vacuum sterilization cycle Note The water reservoir must be above minimum and the door must be closed Select temperature 134 with B2 button 121 light extinguished 134 light illuminated or vice versa for each press of button B2 Push B3 button With drying LED illuminated all other cycle LED s extinguished Push the button B5 Extend LED illuminated gives sterilization time of 18 minutes at 134 C Push the button B6 First LED on progress indicator illuminates If fitted the printer records time and cycle data Water pump is on Water fill valve opens Steam bleed valve opens All other valves are closed Wait for water to reach minimum level Second LED on progress indicator illuminates Wait for water to reach maximum level Water fill valve closes Water pump is off Third LED on progress indicator illuminates Mains relay on Immersion heater on Fourth LED on progres
57. for Vacuum autoclave 1 1 inc spiral wrap 391190 OR 111011 Fill Empty pipe assembly for Non Vacuum autoclave 1 1 inc spiral wrap 391190 20 391170 Silicone tube 400mm x 3mm x 2mm wall 1 1 OR If Pressure door lock fitted 111805 Pipe set pressure door lock 1 1 21 391171 Silicone tube 280mm x 5mm x 2mm wall 1 1 22 391172 Silicone tube 450mm x 5mm x 2mm wall 3 23 391156 Restrictor 1 24 380010 Drain tap 1 25 391175 Gauge pressure vacuum safety 1 26 380020 Plug 1 4 BSP 884 2 2 1 27 391132 Washer Dowty 1 4 BSP 2 1 Z2 MISCELLANEOUS 695777 Cable tie As reqd 10 301600 PTFE tape As reqd 670170 Hellerine oil pipe fitting lubricant As reqd 1 391077 Silicone tube per metre 8mm x 2mm wall As reqd 391078 Silicone tube per metre 6mm x 2mm wall As reqd non vacuum units only ST SM33I vacuum units only PARTS LIST 2 PIPES AND PLUMBING COMPONENTS NI Not illustrated Spares P43 51 amp ESCHMANN NOTE The fixings screws nuts washers etc for each part are detailed in the parts list following each item oy TD AN T 7 ew I o pa o z o o E o o 2 E o o o T A o pa o o LI e amp 0 LI n T o o Eel o o o LL ST SM33I P44 51 PARTS LIST 3 GENERAL ASSEMBLY COMPONENTS Fig 9 Sheet 1 Item Part No Description 1 391002 Door cover 391009 Pin spring
58. from 135 5 by more than 1 5 during sterilisation plateau If fitted the printer outputs the temperature and pressure values every 20 seconds Immersion heater duty drops to approximately 20 Programmed pause Immersion heater disabled Beep sounds If fitted the printer outputs TSE followed by the temperature and pressure values Fan on Fourteenth LED on progress indicator illuminates Steam bleed valve pulses to exhaust steam Wait for temperature to drop to 120 C Water discharge valve opens Band heater enabled Wait for the water in the chamber to drain Fifteenth LED on progress indicator illuminates Wait for rate of pressure drop below 40kPa minute Sixteenth LED on progress indicator illuminates Seventeenth LED on progress indicator illuminates If fitted the printer outputs TDS followed by the temperature and pressure values Vacuum pump on Vacuum inlet valve opens at 115kPa Beep sounds D1 displays drying time left Wait for chamber pressure to fall 5kPa below atmospheric Air admit valve opens Wait for pressure to return to atmospheric Air admit valve closes ST SM33I Wait for 20 seconds Air admit valve opens Note Above two steps repeat until end of drying time Wait for half of specified drying time Eighteenth LED on progress indicator illuminates Wait until five minutes before the end of the specified drying time Band heater disabled Fan on Wait until the end o
59. front of the unit Their use is explained in greater detail within the Instruction for Use Mains switch The symbol T indicates on and the symbol 0 indicates off see 9 Fig 2 Push buttons see Fig 1a and 1b B1 Display change button Press B1 to display the cycle counter in display window D1 Cycle temperature button Each time B2 is pressed the cycle temperature alternates between 134 C and 121 C Unwrapped load with drying cycle button Unwrapped load without drying cycle button Programme P button For details see Section 7 2 Cycle start button Always press and hold Open door button Always press and hold Single wrapped load with drying cycle button Vacuum autoclaves only B2 ST SM33I B9 Hollow instruments without drying cycle button QuickVac and later SES2555 models only Note During some maintenance procedures you can press and hold buttons to scroll display data quickly Digital displays see Fig 1a and 1b DI Time cycle counter error number display or minutes left during sterilization or drying phase For more details on the error codes see Table 4 Temperature display Pressure display D2 D3 NOTE Displays may show other information in special functions mode see the Special functions table Indicators see Fig 1a amp 1b A1 A2 Low water indicator Process display indicator See Table 1 in the instruction for Use Door unlocked
60. fuse trips or needs replacing the condition of the chamber MUST be inspected for any signs of damage or overheating To replace the thermal fuse not illustrated strapped on the outside of the chamber behind neck ring simply release the spring clip and disconnect its spade connections Replace with a new one ensuring the fuse is in close contact with the chamber wall and correctly oriented 8 27 Display board To replace the display board fitted behind the display panel remove all connections and unclip it from the front moulding allowing the ribbon cable from the membrane key pad to pass through the slot in the board Replacement is the reverse but ensure the correct procedures are used when handling the PCA to protect it from static discharge and the membrane key pad ribbon cable is passed through the slot in the display board and reconnected to it The PCA will require configuring and calibration using the Autoclave Service Interface Software 8 28 Mains fuse holders To replace a mains fuse holder item 8 Fig 2 it will be necessary to remove the water discharge solenoid valve completely see section 8 4 Fuse holder replacement entails releasing the spade connections unclipping the old one from the base of the unit and clipping back a new one Replace the spade connections to the correct terminals then replace the water discharge solenoid valve Ensure the cover and cable tie are replaced 8 29 Membrane key pad To replace t
61. g Remove the outer nut and washers retaining the wire terminal and the nut holding the sensor assembly in the chamber door Remove the outer bush and the sensor an M4 x 35mm cap head screw and bush from inside the chamber door Clean the internal chamber seating and refit new components as follows Remove any burr on the lead in edge on both sides of the bore and ensure bore is clean Fit one bush onto the screw wipe O ring with diluted washing up liquid and fit this onto the screw Slide this assembly into the bore until the bush is flush with the door Fit the other bush on the reverse side a plain washer and then the Nyloc nut P33 51 ESCHMANN Tighten this nut until the O ring starts to become compressed then tighten a further half turn note small gap illustrated do not tighten nut to eliminate Fit the remaining washers nut and ring terminal as shown below Finally for vacuum units perform a leak test special function F4 Note The sensor assembly on early models may be different to that shown below which is now the preferred arrangement If replacing an assembly the version shown below should be fitted as detailed above see Parts list 1 item 34 for component part numbers M4 Screw 8 24 Reset thermostat overheat 8 24 1 To remove the Reset thermostat item 25 Fig 3 and attached bulb remove two spade connectors from the switch noting the terminals each
62. h function is selected Initially P12 51 display D1 will show FO each time the P button B5 is pressed this will increase from FO up to F8 F4 F5 F6 vacuum autoclave only and then back to FO again until either the start button B6 is pressed to select that function or the autoclave is switched off or B7 is pressed with the door open to cancel special function selection To access FO the autoclave PIN number password is required If this is known the protected functions are available and are detailed in Table 3 protected functions Door must be shut before access to F4 F5 F6 and F7 is permitted 7 2 Protected functions Protected functions are accessed through special function F0 see above using the autoclave PIN number passvvord If this is known the protected functions are available as detailed in Table 3 protected functions When access to the protected functions has been made all displays and indicators are blank except D1 which shows PO For each press of B5 the P number will increase by 1 and then back to PO Cycle to the number required and press button B6 to perform that function as detailed in Table 3 7 3 Errors and faults 7 3 1 Power failure If after switching on power there is no visual display first check power supply connections both fuses at the front of the unit see Fuse Renewal and the fuse in the mains plug if it is a fused plug If power fails during a cycle check
63. hamber temperature sensor fault b See 13b 29 Error 29 displayed Unwrapped purge time 2 outside set limit a Power to heater fault a See 13a b Chamber temperature sensor fault b See 13b 30 Error 30 displayed Time to heat to set point outside set limit a Power to heater fault a See 13a b Chamber temperature sensor fault b See 13b c Steam bleed valve fault c Check steam bleed valve item 2 Fig 3 wiring and that it opens and closes correctly replace if required see 8 4 31 Error 31 displayed Chamber maximum temperature outside set limit a Power board fault a See 14b b Chamber temperature sensor fault b See 13b 32 Error 32 displayed Chamber maximum pressure outside set limit a Chamber temperature sensor fault a See 13b b Pressure sensor fault b See 27c c Power board fault c See 14b 33 Error 33 displayed Water discharge time outside set limit a Steam bleed valve fault a Stuck open see 30c b Water discharge valve fault b Water discharge valve item 2 Fig 3 not opening check wiring and that it opens and closes correctly replace if required see 8 4 c Chamber water level sensor fault c Check sensors item 14 and 17 Fig 3 not shorted to earth Also in extreme cases condensation on sensor can give a false reading repeat cycle and check for repeated error d Gauze filter blocked d Gauze filter item 6 Fig 2 blocked by debris clean around filter then remove i
64. he Instructions for Testing manual ST IM55 With display D1 showing F7 load the autoclave with the load to be disinfected and close the door Press the start button B6 to start the disinfect function a 2 5 minute disinfect time at 110 C D1 will continue to show F7 during the cycle and D2 and D3 will show temperature and pressure At the end of the cycle the normal audible sound will be heard Press B7 to open the door and remove the load display D1 will be showing FO To resume normal use switch off the mains switch item 9 Fig 2 and then switch back on or press B7 with the door open NOTE The ex factory condition is for this function to be disabled With display D1 showing F8 press the start button B6 to enter the adjust date and time function Display D1 will show SER and D2 will show the year to increase the year press B2 or B3 to reduce it when correct press button B4 to confirm the year The display D1 will show Manth and D2 will show the month in numerical format to increase the month press B2 or B3 to reduce it when correct press button B4 to confirm The display D1 will show SAY and D2 will show the day in numerical format to increase the day press B2 or B3 to reduce it when correct press button B4 to confirm The display D1 will show Hour and D2 will show the hour to increase the hour press B2 or B3 to reduce it when correct press button B4 to confirm The display D1 will show Fi nut and D2 will show
65. he membrane key pad item 3 Fig 2 entails removing the ribbon cable from the key pad to the display board and then prising the key pad away from the front moulding it is held in place by adhesive Clean the moulding face before re attaching a new key pad by removing the release paper on the adhesive and pressing in place Reattach the ribbon cable to the display board 8 30 Reservoir level sensor Do not remove the sensor connections before draining the reservoir The reservoir level sensor is fitted in the base of the reservoir and consists of two parts each connected electrically One connection is to the water fill pipe spigot The second is above the water fill pipe spigot and it must be connected correctly to avoid leaks and make good electrical connection This is fully detailed in section 8 5 3 The only parts that would normally require replacement are the sealing washers and PTFE tape around the screw Do not forget to refill the reservoir ST SM33I 8 31 Water pump 8 31 1 To remove the water pump item 2 Fig 4 after draining the reservoir or clamping the supply pipe remove it from the spring retaining clip for ease of access Disconnect the electrical connection by releasing the spring retaining clip on the plug attached to the wiring loom Cut off the cable ties from the silicone tubes taking care not to damage the tubes where they connect to the pump and release the tubes noting the orientation to ensure correct reconne
66. ig 2 When the interlock pin is depressed down the door cover can be separated from the main autoclave door and door beam Release the drain pipe and tap item 14 Fig 2 from the base of the door and then remove the four front cover retaining screws marked A in Fig 2 Carefully release the door cover and front cover together from the unit pulling the right hand side out first until access to the inside of the autoclave has been gained Release the ribbon cable attached to the display board and the air inlet pipe from the rear of the air filter vacuum units only Continue to remove the front covers feeding the drain pipe and tap through the hole marked C in Fig 1 If itis required to operate the autoclave with the front cover removed the ribbon cable can be extended by releasing the ribbon cable clamp 8 3 2 Top cover removal see warning above section 8 1 On early models no side fixing screws Remove the front cover as detailed in 8 3 1 Slightly raise the front of the top cover and pull it forwards to release the cover from the two retaining spigots on the top of the reservoir item 30 Fig 3 Lift cover clear of reservoir or continue to slide cover forwards until clear On later models with side fixing screws On later models the front cover does not need to be removed Using a TX25 Torx pin tamperproof screwdriver remove the screw on each side The top cover can then be slide backwards and then up until clear 8 3
67. illuminates Seventeenth LED on progress indicator illuminates Fan off at 115kPa Door catch releases and door is opened by residual pressure Beep sounds D1 displays remaining drying time Immersion heater duty to 4 Steam bleed valve opens If fitted the printer outputs TDS followed by the temperature and pressure values D1 displays drying time left Wait for half of specified drying time Eighteenth LED on progress indicator illuminates Wait for second half of specified drying time Nineteenth LED on progress indicator illuminates Immersion heater disabled Mains relay off Fan on Three beeps sound If fitted the printer outputs TDE followed by the temperature and pressure values Cycle Complete followed by the time D1 displays time 7 Maintenance For easy reference to the buttons display and indicator numbers B1 D1 A1 etc used within the following sections note that Figs 1a and 1b are repeated on a fold out page atthe back of this manual Open out this page to provide a quick reference guide 7 1 Special functions Switch off the mains switch item 9 Fig 2 Press and hold in the P button B5 whilst switching the mains switch back on display D1 will show FO to make available several special functions as detailed in Table 2 Special functions When the autoclave is switched on in this way display D1 only will be illuminated with other displays as required depending on whic
68. imit at cycle start a Chamber temperature sensor fault a See 13b b Ambient temperature extreme b Only run within design parameters 40 Error 40 displayed Chamber pressure above set limit at cycle start a Chamber pressure sensor fault a See 27c b Ambient pressure extreme b Only run within design parameters 41 Error 41 displayed Chamber pressure below set limit at cycle start a Chamber pressure sensor fault a See 27c b Ambient pressure extreme b Only run within design parameters 42 Error 42 displayed Band heater temperature above set limit at cycle start a Band heater temperature sensor fault a See 20c b Ambient pressure extreme b Only run within design parameters 43 Error 43 displayed Band heater temperature below set limit at cycle start a Band heater temp sensor fault a See 20c b Ambient pressure extreme b Only run within design parameters c Calibration error c Recalibrate see section 7 4 44 Error 44 displayed Chamber water level high at cycle start a Maximum water level sensor fault a Water level sensor failure item 17 Fig 3 or wiring to it 45 Error 45 displayed Chamber water level low at cycle start a Minimum water level sensor fault a Water level sensor failure item 14 Fig 3 or wiring to it continued on page 28 ST SMS3I P27 51 OESCHMANN FAULT DIAGNOSIS Continued 46 Error 46 displayed Door open button pressed 10 times and door failed
69. indicator Door locked indicator A3 A4 C Selection indicators These indicators illuminate to show which function has been selected cycle or temperature 4 Autoclave components 41 The following components and equipment are incorporated in the autoclave They are illustrated in Fig 2 3 and 4 Fig 2 shows the autoclave with covers on Fig 3 and 4 with covers off In Fig 2 and 3 the vacuum unit is shown some components are particular to the vacuum unit only vacuum and QuickVac models are similar apart from the control panel Fig 4 shows the position of components peculiar to the non vacuum unit and some common components Door close solenoid Fig 3 item 8 This is operated when the door closed microswitch Fig 3 item 19 is actuated by closing the door The lock Fig 3 item 12 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 mustbe setto on in order to open the door See errors and error clearing section NOTE FOR EASY REFERENCE THESE FIGURES 1a amp 1b ARE REPEATED ON A FOLD OUT AT THE BACK OF THIS MANUAL Fig 1a Control panel for SES2555 and LS5 ST SM33I AO 134 C 0 ER E NEN B9 E NENNEN Nj E en QE Bs A2 121 C fafa X 6D Fig 1b Control panel for QuickVac and later SES2555 Models
70. inter assembly complete Printer ribbon retaining clip if printer fitted Cable assembly printer 16 way Cable assembly RS232 9 way Screw M3 x 8mm Pozi head Washer M3 shakeproof Band heater reset thermostat Washer M4 plain Washer M4 shakeproof Nut 4BA DOOR SENSOR ASSEMBLY KIT two sensors as below Insulation Bush Screw M4 x 35mm O ring VITON Nut M4 NYLOC Plain Washers M4 Shakeproof Washers M4 Nut M4 plain RESERVOIR WATER LEVEL SENSOR COMPRISING Screw M5 x 20mm cap head Washer M5 plain Washer PTFE EARTH FIXINGS Metway clamps primary earth only Washer M4 plain Washer M4 shakeproof Nut M4 MISCELLANEOUS Cable tie Tape PTFE IEC Mains lead per unit WwW PW AS Po HPO HNP an AH AH KH Ha as SN OH N C5 Co CO N As Read As Read 1 vacuum units only NI Not illustrated Note For information on the Mains Filter see Appendix 1 Spares 1 5 1 2 1 E 4 6 1 P41 51 SJESCHMANN NOTE The fixings NON VACUUM CAP screws nuts washers 12 CA S etc for each part are V TS detailed in the parts list following each item RESERVOIR BASE 9 of NON VACUUM 7 Note For Pressure door lock details see Parts List 3 VACUUM VACUUM AUTOCLAVE Vacuum pump Water fill valve Air inlet valve Power PCB Water pump Y Shaped connector Straight connector supplied with bacterial filter SCHEMATIC PIPE
71. ious processes of autoclave operation which occur during a cycle is given in the following paragraphs CAUTION Ensure that the Autoclave is switched off before filling the reservoir the autoclave is supplied with a blanking plug only P9 51 ESCHMANN TABLE 1 KEY TO DISPLAY A2 Cycle started Chamber minimum fill achieved Chamber filled with water Phase 2 Heater on Approximately 90 C reached Final heating phase started Phase 3 Sterilization phase started One sixth of the sterilization time completed for each LED illuminated Phase 4 Condensing stage started Water removed from chamber Pressure approaching ambient Note Eschmann recommend the use of Sterile Water for Irrigation alternatively clean distilled or deionized water or water treated by reverse osmosis may be used 5 2 Power is switched on by selecting the power switch O l to Fig 2 item 9 NOTE If the door was locked closed when switching on indicator A4 will flash and button B7 should be pressed to unlock the door the secondary catch can then be released to open the door fully 5 3 Afterloading the chamber close the door and hold it firmly shut until the automatic door lock operates This is shown by indicator A3 switching off and indicator A4 switching on NOTE A cycle cannot be selected as detailed in the Instruction for Use with the door open 5 4 When the door is closed with the power switched on this
72. is protected function Display DI shows P3 press button B6 display D1 shows t followed by the current temperature Display D2 shows the current temperature display D3 shows the current pressure in kPa Use buttons B2 and B3 to set the value in display D1 to the current temperature indicated on the calibrated instrument Press button B6 until a beep is heard Press button B1 display D1 shows P followed by the current pressure in mBars Use buttons B2 and B3 to set the value in display D1 to the current pressure indicated on the calibrated instrument Note The value in display D1 changes in steps of 2 mBars Press button B6 until a beep is heard and the temperature and pressure displays change to the values entered in the previous steps Press button B7 display D1 shows P3 With the door open press B7 to exit back to special function FO or B5 to cycle through and gain access to other protected functions by pressing B6 when the correct P number is displayed P4 Low pressure calibration This protected function performs a low pressure calibration This function can only be run on a vacuum autoclave The door must be closed for this protected function Insert a suitable pressure probe from a calibrated instrument and or chart recorder as detailed in section 7 4 Display D1 shows P4 press button B6 Display D1 shows P 200 display D3 shows the current pressure in kPa Note D3 pressure is always in kPa Wait until the pressure drops to
73. is sensed by the power board via the door closed microswitch Indicator A4 will not illuminate until the automatic lock has operated and the door locked microswitch has been actuated by the primary lock After cycle selection as detailed in the Instruction for Use the cycle is started by pressing B6 If the autoclave has a printer it will start printing automatically 5 5 Asthe cycle progresses indicator A2 will show the cycle stage reached see Table 1 and the digital displays D2 and D3 will display the actual chamber temperature and pressure respectively 5 6 Control of the cycle is fully automatic with temperature information being monitored by temperature sensors and displayed on the front panel Timing is controlled by the power board and cycle times cannot be adjusted By comparing measured values with known time temperature relationships the power board is able to detect faults such as lack of water at the fill stage or loss of water and steam during the process and it will indicate such problems by displaying errors codes e g Err03 which will be accompanied by an audible warning signal see Table 4 for details on clearing errors and error codes P10 51 Phase 5 LED 1 LED 2 LED 3 Start of drying phase Drying phase 50 completed Cycle completed audible bleep 5 7 The autoclave operates at temperatures slightly above the usual recommended minimums The operating temperature
74. k plugs Also pressure door lock not illustrated Part view covers on Fig 7 repeated Parts list 1 Electrical components shown covers off P40 51 ST SM33I ltem Part No 23 24H 25 26 34 35 non vacuum units only QuickVac and later SES2555 vacuum units only ST SM33I 391057 710211 710731 391075 391053 391072 391314 391097 696643 301796 424171 391308 391097 696643 301796 424171 391312 391016 111772 391015 391010 391187 391301 391302 391087 710734 759647 709861 710731 307046 111523 111520 111522 111519 111521 709861 710731 710371 700237 709862 391074 693640 709861 710731 710371 695777 301600 714188 Description Solenoid valve only 3 fitted on non vacuum Screw M4 x 10mm cap head Washer M4 shakeproof Spare O ring for solenoid valve Vacuum pump for pump kit see 8 35 1 O ring Power board PCA vacuum autoclave see Appendix 1 PCA insulation sheet PCA slide Spacer Nut thumb PARTS LIST 1 Continued ELECTRICAL COMPONENTS Qty 5 2 per valve 2 per valve As reqd DD N AS Power board PCA non vacuum autoclave see Appendix 1 PCA insulation sheet PCA slide Spacer Nut thumb Display board PCA Membrane key pad for vacuum autoclave yellow buttons Membrane key pad for QuickVac amp SES2555 blue buttons Membrane key pad for non vac autoclave yellow buttons Pr
75. loaded door interlock pin and locating it into the slot at the bottom of the door beam Note that the top of the door interlock pin item 2 Fig 9 has a machined flat that should be aligned to face the door cover item 1 Fig 9 Some early units did not have this flat and orientation is not critical Replace plate B in Fig 2 using the correct tamper proof screws 8 4 Chamber solenoid valves 8 4 1 If the valve assemblies are to be dismantled for cleaning and inspection do not misplace the small internal spring around the sealing plunger or the seal If only the valve coil has failed e g short circuiting it can be replaced 8 4 2 To clean replace or repair valves first remove the electrical connection from the valve by removing the crimps from the coil If replacing the valve remove the tubing connected to the valve body do not forget to clamp the pipe or drain the reservoir when working on the water fill valve by cutting through the cable tie take care not to cut into the pipe 8 4 3 To replace the coil release the nut and washer on the top of the coil and remove the coil from the valve body Replace the coil ensuring that the replacement has the same electrical rating 24V 14W replace the washers and nut do not overtighten as this can damage the coil and reattach the electrical connection Test the valve function using protected function P7 8 4 4 To clean the valve remove the coil as detailed above and then release
76. lve fault c See 15c 18 Error 15 displayed Chamber temperature sensors differing by more than preset limit a Chamber temperature sensor fault a See 13b 19 Error 16 displayed Real time clock error a Real time clock error stopped a Restart clock by resetting time using special function F8 If this is not successful replace display board see 8 27 20 Error 17 displayed Band heater not working a Band heater fault a Check band heater not open circuit and power is available from SSR etc check all connections Check mains voltage If required replace band heater see 8 22 or power board see 8 7 b Reset thermostat fault b Reset thermostat item 29 Fig 3 and repeat cycle if thermostat trips again the band heater temperature sensor item 28 Fig 3 could be at fault ensure sensor is not dirty or corroded or in need of calibration see 7 4 If fault continues replace band heater thermostat item 29 Fig 3 see 8 34 c Band heater temp sensor fault c Ensure sensor is not dirty or corroded check calibration see 7 4 fit new sensor if required see 8 20 d Heat loss covers not fitted d Refit covers and run cycle covers should always be in place 21 Error 18 displayed System configuration invalid a EEPROM corrupted a Reconfigure via P C or replace Display PCA see 8 27 22 Error 19 displayed Calibration invalid a EEPROM corrupted a Recalibrate see section 7 4 or transfer factory calibration using
77. m them the t stops flashing The cycle selected will be run automatically starting at the time set a will be displayed in D1 after the time to show that a delayed start time has been set On completion of the cycle the autoclave is ready for the load to be removed and normal use resumed without the need to exit from the special functions mode Note If the same delayed start time is required each day the setting can be entered quickly once display D1 shows F3 by pressing B6 B6 B7 With display DI showing FO close the autoclave door if open press B5 until display D1 shows F4 press B6 Indicator A4 will flash press B7 to open the door indicator A3 will illuminate Close the door A4 will illuminate press B6 this starts an automatic leak test which checks to see if the autoclave system is still pressure tight Display D3 will show the chamber pressure after a few minutes display D2 will show the pressure rise to the nearest 0 1kPa After a further 10 minutes if the pressure has not risen by more than 1 3kPa display D2 will show PAS indicating the autoclave has passed the test or F Ii to indicate the autoclave has failed the test and an audible sound will be heard continues on page 16 P15 51 OESCHMANN TABLE 2 continued SPECIAL FUNCTIONS DISPLAY FUNCTION F4 continued from page 15 F5 Air Detection Test Vacuum Autoclave ONLY Note To conduct this test the chamber temperature must be below 50
78. nd heater temperature to reach about 158 C on the calibrated instrument then press button B1 Display D1 shows t followed by current band heater temperature Use buttons B2 and B3 to set the value in display D1 to the current temperature indicated on the calibrated instrument Continue to adjust the temperature in D1 until a stable condition is achieved Press button B4 a beep is heard Press and hold button B5 and B7 the autoclave completes the cycle immediately Display DI shows P5 all other displays are blank With the door open press B7 to exit back to special function FO or B5 to cycle through and gain access to other protected functions by pressing B6 when the correct P number is displayed P6 Cycle Enable Disable This protected function enables or disables the sterilization cycles Display D1 shows P6 press button B6 The programme and temperature LEDs display the default programme All LEDs on the progress indicator A2 are illuminated to indicate this programme is enabled Button B4 can now be used to toggle all LEDs on the progress indicator A2 on or off showing that the indicated programme is enabled or disabled respectively Press button B2 the programme and temperature LEDs display the next programme Use B4 to toggle all LEDs in A2 on or off to enable or disable the indicated programme Repeat pressing B2 and enable or disable each programme as required when indicated until all programmes have b
79. nnual inspections of the pressure system to satisfy the requirements of the Pressure Systems Safety Regulations 2000 P13 51 ESCHMANN VACUUM AUTOCLAVE Vacuum pump Vacuum valve Water fill valve Steam bleed valve Air admit valve Bacterial air filter Power PCB Water discharge valve Water pump Drain tap Y Shaped connector RE Reservoir Restritor in pipe FM Filter mount SC Straight connector PDL Pressure Door Lock Not fitted on early units NOTE All pipe connections are secured with cable NON VACUUM tie 695777 AUTOCLAVE PART IDENTIFICATION 1 Fill empty pipe assembly 391169 includes spiral wrap 391190 2 Discharge air bleed pipe assembly 391168 3 450mm pipes 391172 4 Pipe set Pressure Door lock 111805 or 400mm pipe 391170 if pressure door lock not fitted 5 160mm pipe 391171 6 Fillempty pipe assembly 111011 includes spiral wrap 391190 All pipes 5mm i d x 2mm wall except 391170 3mm i d x 2mm wall Fig 5 Pipe connections and identification P14 51 ST SM331 TABLE 2 SPECIAL FUNCTIONS See section 7 1 which provides instructions for accessing these special functions and Fig 1a amp 1b foldout at the back of this manual DISPLAY FUNCTION FO Protected functions F1 Printer test F2 Cycle history F3 Set delayed start F4 Leak Test Vacuum Autoclave ONLY Note To conduct this test the chamber temperature must be below 50 C to avoid an Error 38
80. ons whilst Figs 10 and 11 show the electrical connections for the non vacuum and vacuum units respectively Note Figs 10 and 11 open out at the back of this manual When refitting tie wraps to pipes use Tie wrap tool 5401 set at tension 2 7 7 Safety Checks The following safety checks detailed in the Instructions for Use are repeated here as they are important Operators should ensure that the following safety checks are carried out Weekly i Check that the door opens and closes easily ii Check the door seal for any signs of damage iii Check the secondary door catch latches effectively iv Check for any obvious escape of steam or water during a cycle apart from the normal escape via reservoir vents Any of the above defects should be attended to by a Competent Person immediately and the autoclave should not be used until repair has been effected see note below ST SM33I Annually i Check that the pressure relief valve operates correcily at the set pressure ii Inspect the pressure system for integrity iii Check door microswitches and interlocks iv Check door locking mechanism for integrity v Check pressure indicators for correct operation NOTE Annual inspections should only be undertaken by a Competent Person Eschmann can provide comprehensive service contracts which cover preventive maintenance to ensure trouble free operation of your autoclave as well as six monthly and a
81. or 03 displayed Time for chamber to fill with water too long time out a Water fill solenoid valve fault a Water fill solenoid valve item 11 Fig 3 faulty or connections or supply to it faulty or failed See 8 4 to replace valve continued on page 24 ST SM33I P23 51 OESCHMANN FAULT DIAGNOSIS Continued b Water pipe connection fault b Pipes to water fill valve from reservoir disconnected blocked or kinked pipes pass via water pump on non vacuum unit c Water pump fault non vacuum only c Water pump item 2 Fig 4 faulty or pipe connections to it faulty or supply to it faulty or failed See 8 31 to replace pump Also check on older units that pump is in the new position close to reservoir if not or in doubt contact Eschmann Equipment d Low water in reservoir d Reservoir water level sensor error see fault 2 above e Chamber water level sensor error e Water level sensor failure items 14 and 17 Fig 3 or wiring to them faulty see 8 23 12 Error 04 displayed Low water level during cycle water steam loss a Insufficient overfill a Chamber fill below that required due to slow fill rate check faults and solutions in 10 above b Chamber integrity fault b Chamber has a slow leak below that to trigger leak test from any of the following areas Door seal check and or replace see 8 13 solenoid valves check and or replace see 8 4 safety valve see faults 4 and 5 above test prob
82. ower failure aa 12 Aborted cycles and errors 12 Reset thermostat overheat 12 74 Calibration 0 0 0 0 eee 13 75 LEDFunction test 13 7 6 Connections air water and electrical 13 7 7 Safety checks Weekly amp Annual 13 8 Part removal amp replacement 8 Partremoval 8 replacement 30 81 General cc eee 30 8 2 Fuse renewal aaa 30 8 8 Cover removal 8 replacement 30 8 4 Chamber solenoid valves 31 85 Reservoir ce eee 31 8 6 Mains transformer 32 87 Powerboard iii 32 8 8 Door microsvvitches 32 8 9 Door locklopen solenoids 32 8 10 Door lock magnetic catch 32 8 11 Chamber temperature sensors 32 8 12 Heating element 32 8 13 Doorseal aaa 32 8 14 Vacuum pump aa 33 8 15 Coolingfan cremi aaa 33 8 16 Bacterial air filter 2222220 33 ST SM33I 8 17 Gauze filter ae 33 8 18 Printer corner ogean y e i 33 8 19 Safety valve aaa ann 33 8 20 Band heater temp sensor 33 821 Mains switch 0 000000 33 8 22 Band heater aaa iii 33 8 23 Chamber vvater level sensors 33 8 24 Reset thermostat overheat 34 8 25 Cycling thermostat 34 8 26 Thermalfuse
83. power board c No power on display board c Faulty power board item 26 Fig 3 or faulty wiring or faulty connection to display board See 8 7 to replace power board d Faulty display board d Replace display board see 8 27 continued on page 23 P22 51 ST SM33I FAULT DIAGNOSIS Continued 2 Alilluminated but reservoir full a Reservoir level sensor fault a Reservoir level sensor item 1 Fig 4 faulty or loose see section 8 30 or bad connection to power board b Reservoir contaminated b Drain clean and dry reservoir then refill 3 Al Flashing at cycle start Cycle start requested with low vvater a Button B6 pressed with A1 on a Low reservoir water level fill as detailed in the Instructions for Use If indicator A1 is still illuminated when reservoir is full check function of reservoir water level sensor item 1 Fig 4 for broken wire etc If indicator A1 was not illuminated when B6 pressed and reservoir empty check indicator A1 using the LED test detailed in 7 5 4 Cycle selection not possible a Water level in reservoir low a Check A1 Fig 1 if on fill reservoir b Door not closed b Close door check A4 Fig 1 illuminated if not see c d and e below c Door microswitch fault c Faulty door microswitch items 18 and 19 Fig 3 or faulty wiring to them See 8 8 to replace microswitches d Door close solenoid fault d Door close solenoid item 8 Fig 3 faulty see 8 9
84. ress button B4 B4 LED goes off and the air admit valve closes Only on vacuum autoclaves Press button B2 display D3 shows 4 Press button B4 B4 LED illuminates and the fan runs Press button B4 B4 LED goes off and the fan stops Press button B2 display D3 shows 5 Press button B4 B4 LED illuminates and the steam bleed valve opens Press button B4 B4 LED goes off and the steam bleed valve closes Press button B2 display D3 shows 6 Press button B4 B4 LED illuminates and the vacuum inlet valve opens Press button B4 B4 LED goes off and the vacuum inlet valve closes Only on vacuum autoclaves Press button B2 display D3 shows 7 Press button B4 B4 LED illuminates and the door open solenoid operates Press button B4 B4 LED goes off and the door open solenoid operates Press button B2 display D3 shows 8 Press button B4 B4 LED illuminates and the door close solenoid operates Press button B4 B4 LED goes off and the door close solenoid operates Press button B2 display D3 shows 9 Press button B4 B4 LED illuminates and the mains relay is on Press button B4 B4 LED goes off and the mains relay is off Press button B4 to turn the mains relay on and leave it on to enable other tests e g heaters that follow Press button B2 display D3 shows 10 Press button B4 B4 LED illuminates and the water pump operates Press button B4 B4 LED goes off an
85. rst screw to each head 8 35 6 Remove the valve plate 7 Fig 6 from both head assemblies by removing the four retaining screws 8 Fig 6 and discard the valve plate seals 9 Fig 6 beneath the valve plates 8 35 7 Remove the two flapper retaining screws 10 Fig 6 in each valve plate and clean the flappers 11 Fig 6 and valve plates Replace the flappers to their original positions and secure with screws 8 35 8 Fit new valve plate seals and replace the valve plate assemblies and secure by tightening screws in a cross pattern and torque to 2Nm re torque the first screw to each head 8 35 9 Separate the heads replace the O ring seals 12 Fig 6 around the connecting tube 13 Fig 6 and reassemble the heads together 8 35 10 Position one of the diaphragms at the mid stroke position and ensure that the diaphragm is seated correctly Replace the head and head screws and secure leaving screws loose position the second head secure it and finally torque screws in both heads in a cross pattern to 3Nm re torque the first screw to each head 8 35 11 Reassemble the pump in the autoclave and test function and flow before reconnecting the pipes Finally test the autoclave by running at least one complete cycle If an abnormal noise is heard obtain assistance from the Eschmann After Sales Service Department details inside front cover 8 36 Pressure door lock 8 36 1 If the pressure door lock does not work correctly it should
86. s and vacuum pump J5 and mains in J6 ST SM33I Note Item 34 the Pressure door lock is only fitted on later units Note Items 15 and 20 are shown with twinlocks fitted the autoclave is supplied with a blank plug only 26 10 25 16 Fig 3 Main component identification covers off vacuum and QuickVac autoclave cables and tubing removed for clarity ST SMS3I P7 51 ESCHMANN 3 Fig 4 Main component identification covers off non vacuum autoclave with cables pressure door lock and tubing removed for clarity some parts common to vacuum autoclave Fuse for protecting the 24V d c supply T3 15A Two voltage regulators Autoclave bleeper Pressure transducer with connection via pipe to chamber neck ring Display board fitted behind membrane key pad Fig 2 item 3 The display board interfaces with the power board to control every aspect of autoclave management The main features are 7 segment displays D1 D2 and D3 of Fig 1 to provide time temperature and pressure indication and other information for special and protected functions and error detail LEDs to indicate low water cycle status and door status A1 A2 A3 and A4 of Fig 1 LEDs to provide visual indication of cycle selection C of Fig 1 Connections to Power PCA 40 way ribbon cable J4 key p
87. s indicator illuminates Temperature rises Wait for the temperature to be above 90 and to rise at over 1 8 minute Fifth LED on progress indicator illuminates Programmed pause and condition check Steam bleed valve closed Sixth LED on progress indicator illuminates Wait for temperature to reach 135 0 Seventh LED on progress indicator illuminates If fitted the printer outputs TSS followed by the current time and the temperature and pressure values Immersion heater duty drops Temperature should not deviate from 135 5 by more than 1 5 during sterilisation plateau Eighth to thirteenth LED s on progress P11 51 ESCHMANN indicator illuminate at regular intervals If fitted the printer outputs the temperature and pressure values every 20 seconds D1 indicates remaining sterilization time initially 18 mins Programmed pause Immersion heater disabled Beep sounds If fitted the printer outputs TSE followed by the temperature and pressure values and maximum and minimum sterilization temperatures Fan on Fourteenth LED on progress indicator illuminates Steam bleed valve pulses to exhaust steam Wait for temperature to drop to 120 C Water discharge valve opens Wait for the water in the chamber to drain Chamber minimum indicator off Fifteenth LED on progress indicator illuminates Wait for rate of pressure drop to go below 60kPa minute Sixteenth LED on progress indicator
88. s or chart recorders into the autoclave chamber through the test ports The three available test ports are positioned in the autoclave door one marked TT a twinlock for the chamber test probe one marked PT a blank plug for the chamber pressure probe and a spare blank plug for probes that could be positioned in the load should this be required To insert a probe remove the port cover and carefully insert ROUNDED tipped probes into the chamber through the seal built into the port take care not to damage the port seals and replace the cover after use During calibration of the band heater a temperature probe should be placed under the spring clip provided on the heater this will require the top cover to be removed to gain access It is important that the top cover is replaced for accurate calibration Running protected function P5 will enable chamber temperature and pressure calibration band heater calibration and a pressure relief valve test The latter can be avoided if this test is not required during calibration 7 5 LED Function test To test the function of all LEDs i e to check that they are capable of illumination press and hold buttons B6 and B7 together with the door open All LEDs will be illuminated while the buttons are held depressed together 7 6 Connections air water and electrical During maintenance refer to Figs 5 10 and 11 for details on all autoclave connections Fig 5 shows all the air and water connecti
89. s perform a leak test special function F4 Note When a new temperature sensor is fitted the autoclave must be recalibrated see Calibration 7 4 8 12 Heating element CAUTION Avoid kinking the capillary tube s 8 12 1 To remove the heating element item 4 Fig 4 disconnect the electrical spade connections from the element terminals at the back of the chamber Remove the sterilizing trays carriers and chamber furniture from inside chamber and release the thermostat sensor from its clip Note On the non vacuum unit there are two sensors Unscrew and remove the large nut from the heater mounting boss at the rear of the chamber Withdraw the heating element through the chamber door CAUTION Ensure that the sensor s are correctly positioned see details in sections 8 24 and 8 25 8 12 2 Replacement of the heating element is the reverse of the removal procedure Ensure that a new sealing washer is used and the element is horizontal when fitted and does not touch the chamber furniture when replaced Also ensure that the nut is fully tightened to avoid leaks Finally for vacuum units perform a leak test special function F4 8 13 Door seal Open the chamber door and remove the door seal item 34 Fig 3 from its retaining groove Ensure the front face and groove in the neck ring and the door sealing face are cleaned with a dry lint free wipe When fitting a new door seal wipe it with diluted washing up liquid first Start at
90. supply conditions and fuses at the front of the unit and in the mains plug if fused also check the mains lead is correctly connected at both ends Once power is restored the display D1 will show the error number D2 and D3 will be blank until cleared by switching the autoclave off and then on whilst depressing the start button B6 7 3 2 Aborted cycles and errors If an error occurs during a cycle i e any time after pressing the start button B6 the cycle will abort and provided power supply to the unit is maintained the error number will be indicated by the visual display D1 displays D2 and D3 will continue to show actual temperature and pressure To display the last error number in display D1 press B1 and B5 together at any time Errors are detailed in Table 4 Fault diagnosis with error number details 7 3 3 Reset thermostat overheat Some solutions to an error number will indicate that the manual reset thermostat may have tripped and caused the error Should the heating element manual reset thermostat operate this can be reset by pressing the reset button on the underside of the autoclave approximately 11cm in on the left hand side underneath the unit as indicated on the left hand side of the unit ST SM33I 7 4 Calibration The autoclave can be calibrated by running the calibration cycles Protected functions P3 P4 and P5 consecutively This will require the positioning of probes from calibrated instrument
91. t and clean filter or replace with a new one 34 Error 34 displayed Steam discharge time outside set limit a Steam bleed valve fault a Valve failed shut see 30c b Pressure sensor fault b See 27c continued on page 27 P26 51 ST SM33I FAULT DIAGNOSIS Continued 35 Error 35 displayed Non vacuum door open for drying time outside set limit a Door open solenoid fault a Check door open solenoid item 6 Fig 3 wiring and function b Door held closed by vacuum b Check door seal clean check all valve functions c Door closed microswitch fault c Check door closed microswitch item 19 Fig 3 function and wiring replace if required see 8 8 36 Error 36 displayed Door unlocked during cycle a Door locked microswitch fault a Check door locked microswitch item 18 Fig 3 function and wiring replace if required see 8 8 b Door solenoid adjustment fault b Check door solenoid adjustment fitting is correct see section 8 9 c Door lock magnet fault c Check door lock magnet adjustment fitting is correct see section 8 10 37 Error 37 displayed Band heater above set limit a Band heater temp sensor fault a See 20c b Power board fault b See 14b 38 Error 38 displayed Chamber temperature above set limit at cycle start a Chamber temperature sensor fault a See 13b b Ambient temperature extreme b Only run within design parameters 39 Error 39 displayed Chamber temperature below set l
92. t the reservoir sensor Display D1 shows P7 press button B6 Display D1 shows the raw ADC value for the first pressure transducer display D2 shows P1 display D3 shows 1 the fourth and sixth LEDs on the progress indicator A2 are illuminated if the door is open Press button B1 display D1 shows the raw ADC value for the second pressure transducer display D2 shows P2 Press button B1 display D1 shows the raw ADC value for the first chamber temperature transducer display D2 shows t1 Press button B1 display D1 shows the raw ADC value for the second chamber temperature transducer display D2 shows t2 Press button B1 display D1 shows the raw ADC value for the Band Heater temperature transducer display D2 shows t3 Press button B1 display D1 shows the raw ADC value for the first pressure transducer display D2 shows P1 display D3 shows 1 Press button B4 B4 LED illuminates and the water discharge valve opens Press button B4 B4 LED goes off and the water discharge valve closes Continued on page 20 ST SM33I P19 51 ESCHMANN TABLE 3 CONTINUED PROTECTED FUNCTIONS DISPLAY AND FUNCTION METHOD OF USE P7 I O Test cont d P20 51 Press button B2 display D3 shows 2 Press button B4 B4 LED illuminates and the water fill valve opens Press button B4 B4 LED goes off and the water fill valve closes Press button B2 display D3 shows 3 Press button B4 B4 LED illuminates and the air admit valve opens P
93. the top and work down both sides to the bottom pushing the ST SM33I seal into the groove at approximately 45 Ensure that it is correctly seated into its groove and that it is not kinked NOTE DO NOT USE GREASE Finally for vacuum units perform a leak test special function F4 8 14 Vacuum pump Note For pump refurbishment see section 8 35 8 14 1 To remove the vacuum pump item 9 Fig 3 disconnect the electrical connection from the wiring loom Cut off the cable ties taking care not to damage the pipes from the silicone pipes where they connect to the pump and release the pipes from the vacuum pump noting the orientation to ensure correct reconnection Release the large O ring holding the pump in place and remove the vacuum pump 8 14 2 Replace the pump by the reverse of the removal procedure ensuring the pipes are connected to the correct pump ports using Hellerine oil part number 670170 sparingly with new cable ties 8 15 Cooling fan 8 15 1 To remove the cooling fan item 10 Fig 3 it is necessary to remove the power board see section 8 7 to gain access to the fixings Disconnect the electrical connection from the wiring loom and remove the four screws and shakeproof washers and remove the fan 8 15 2 Installation is the reverse of the removal procedure However when installing the fan ensure that the label is to the top and the cable exits at the bottom to the back left looking from the front This ensures
94. to replace solenoid 24V power supply to solenoid failed or connections faulty e Door adjustment faulty e Door adjustment stopping primary lock engaging 5 Safety valve leaking a Dirt on valve seat a With low pressure in chamber carefully operate safety valve item 24 Fig 3 by hand Warning Beware of risk of scalds from escaping steam If leakage persists fit new safety valve see 8 19 6 Safety valve operating at low pressure during cycle a Safety valve fault a Check safety valve and replace if required see 8 19 7 Safety valve operating at high pressure during cycle a Calibration fault a Recalibrate see 7 4 b Chamber temperature sensor fault b Fit new temperature sensor see 8 11 c Power board fault C Fit new power board see 8 7 8 Unusual display when switching on power a Power board failed to reset a Switch off power wait for 10 seconds and switch back on again b Power board fault b Fit new power board see 8 7 or reprogramme via P C 9 Error 01 displayed Power failure during cycle a Mains supply failure a For display to show error 01 power has already been restored successfully If error 01 continues to occur check for loose mains connections and wiring or over tightened fuse cover item 8 Fig 2 10 Error 02 displayed Door opened during cycle a Door closed microswitch fault a Faulty door microswitch item 19 Fig 3 or wiring to it See 8 8 to replace microswitch 11 Err
95. toclave Australian from Serial Number S5NA3C1001 REF 87 061 09 SES 2555 Vacuum Autoclave Australian from Serial Number S5SA3C 1001 REF 87 061 21 SES 2555 Autoclave Singapore and New Zealand from Serial Number SSNA3C1001 REF 87 060 85 SES 2555 Vacuum Autoclave Singapore and New Zealand from Serial Number S5SA3C1001 REF 87 060 97 1 2 This Service Manual contains a technical description complete maintenance procedures and an illustrated list of spare parts that are available from the Eschmann After Sales Service Department 1 3 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 1 4 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 P4 51 Note When sterilizing lubricated dental handpieces the reservoir water should be changed every week to prevent contamination of the door seal and other elastomer components used in the pressure system 1 5 It is recommended that the reservoir is drained allowed to dry and refilled with water
96. use switch off the mains Switch item 9 Fig 2 and then switch back on or press B7 with the door open With display D1 showing F3 press the start button B6 to enter the delayed start time setting mode and delayed start initiation display D1 will show Hour If the start hour displayed in D2 is correct as set last time and the minutes can be assumed correct as set last time press the start button B6 to programme the autoclave to start automatically at this set time The display D1 will change to FO when B6 is pressed Press B7 with the door open to exit the setting mode If the start time is not correct when entering function F3 display D1 showing Hour display D2 showing the hour set in 24 hour clock mode press B2 to increase the hour or B3 to reduce it Press B4 to confirm the hour when it is correct Display D1 will show mut to increase the minutes shown in D2 press B2 or B3 to reduce them Press B6 to confirm the minutes The display D1 will show FO Press B7 with the door open to exit the setting mode The autoclave should be left switched on with the required load in place the door shut and the required cycle selected as follows When the door is shut a t flashes on and off after the time in display D1 This continues while the program selection and any adjustments to it are made see Instructions for Use if GE appears in display D2 When cycle selection has been completed and B6 is pressed to confir
97. uum performance of the pump is poor but it is operating correctly it can be refurbished rather than replaced by the following maintenance procedure Refurbishment of the vacuum pump entails the replacement of the diaphragm with hold down plate valve plate seal and O ring in both heads During dismantling carefully note part orientation for reassembly failure to assemble in the correct orientation could result in a pump working in reverse or with pump heads working against each other Obtain pump refurbishment kit Part No 391185 and proceed as follows ST SM33I Fig 6 Pump maintenance part identification 8 35 2 Disconnect the two pipes one on each pump head by cutting off the cable tie around the silicone pipe taking care not to damage the pipe Remove the electrical connection and the pumps retaining O ring and remove the pump from the autoclave 8 35 8 Remove the four head screws 1 Fig 6 in each head and lift off the two head assemblies 2 Fig 6 together 8 35 4Remove the four diaphragm retainer plate screws 3 Fig 6 in each head lift off both diaphragm retainer plates 4 Fig 6 remove both diaphragms 5 Fig 6 and discard the old diaphragm retainer plates and diaphragm P35 51 ESCHMANN 8 35 5 Place new diaphragms on con rod tops 6 Fig 6 with the new diaphragm retainer plates and replace the screws in a cross pattern using Loctite 242 Part No 306033 on threads and torque to 2 5Nm re torque the fi
98. wait until any audible discharge of water and steam has stopped and switch OFF the autoclave with the mains switch item 9 Fig 2 Wait 10 seconds press and hold in the Start button B6 Fig 1 whilst switching back ON with the mains switch item 9 Fig 2 immediately the normal display appears release the Start button B6 Fig 1 3 Check pressure Before attempting to open the door note the pressure reading this should be below 104kPa before the door is opened 4 Open the door Note A4 will be flashing open the door by pressing B7 If the door fails to open see NOTE below there may still be water in the autoclave NOTE Door opening problems There may be up to a litre of water which could be HOT still in the chamber be prepared to collect this in a suitable container A built in safety feature inhibits door opening unless the following procedure is adopted Switch OFF at mains switch item 9 Fig 2 Press and hold in the Door open button B7 Fig 1 whilst switching back ON with the mains switch item 9 Fig 2 wait two seconds and then before releasing button B7 which will open the door hold a container in place under the door to collect any HOT water 5 Check and prepare the aborted load Loads must be considered non sterile if an error occurs and should be resterilized All aborted wrapped loads should be dried placed in new pouches and reprocessed 6 Check chamber before starting another cycle

Service Manual - Frank`s Hospital Workshop

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