Steam Generator Steam Generator
Contents
1. A CONFIDENTIAL Steam Generator Steam Generator Inspecting and Replacing the Steam Generator Check Valve CAUTION The steam generator and check valve may be hot Guard against burns The steam generator check valve is found on STAT M STATIM 5000 units To inspect the check valve turn ON the compressor using the Control Box and allow the unit to run for a few minutes See Required Information and Tools the Control Box Allow the unit to cool to the touch Remove and inspect the air filter the bacteria retentive filter if present and the compressor See Compressor Removal and Installation f there is evidence of water in the bacteria retentive filter replace the steam generator check valve and the filter If there is evidence of water in the compressor or if the compressor filter is wet replace the steam generator check valve compressor and filters See Required Information Tools and Routine Maintenance Air Filters and Compressor Replacing the Compressor To Replace the Steam Generator Check Valve See Figure 2 1 2 Turn the power switch OFF and unplug the unit Carefully cut the cable tie 1 holding the compressor tube 2 onto the check valve 3 inlet and pull the tube off the valve Using a 9 16 inch wrench remove the check valve Apply the wrench to the part of the valve closest to the steam generator 6 Use a 7 16 inch wrench to hold the right angle brass fitting so that it does not move Clean an2. from the fitting Disconnect the water pump tube Teflon tubing by loosening the nut at the top Disconnect the compressor tube Silicone tube by pulling off its fitting STATIML 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103920 Rev 4 0 Steam Generator Steam Generator 6 8 1 8 2 8 3 Disconnect the electrical connections at the PC board Look for the connections on the left side of the board marked BL Disconnect wire N and wire L of the BL set Loosen the mounting screws holding the compressor bracket to the chassis and gently lift the compressor to trace the path of the black and white wire to the steam generator and cut all the cable ties holding the black wire and the white wire Disconnect steam generator thermocouple at the PC board The connection on the board is located behind the pressure transducer board which is held into place by a blue bracket To disconnect the steam generator thermocouple you must remove the pressure transducer board Do this by unclasping the latches on either side of the blue bracket and removing the board Disconnect the wires marked BOILER and trace the wire back to the steam generator carefully cutting the cable ties to free the wire Loosen the mounting screws that hold the bracket adapter to the chassis and remove the steam generator with the adapter together Replacing the Stainless Steel Steam Generator Assembly 1 Br
3. 25 compression nut steam generator outlet tube steam generator outlet fitting compression nut probe bracket inlet fitting screws steam generator bracket assembly transducer leads if present STAT M L 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103920 Rev 4 0 Steam Generator Steam Generator Replacing the Aluminum Steam Generator To replace the steam generator follow these steps see Figure 1 1 Make sure the power switch is OFF and the unit is unplugged 2 Carefully install the steam generator bracket assembly 24 to the chassis using two screws 23 Start the screws into the tapped holes but do not tighten the screws Be careful not to bend the thermocouple leads too sharply min bend radius 3 16 inch 5 mm Retain the protective sleeve on the controller board end of the thermocouple leads as long as possible Do not crush or pinch the thermal fuse lead 3 Connect the compression nut 18 holding the steam generator outlet tube 19 to the top of the steam generator outlet fitting 20 and the compression nut 21 holding the steam generator outlet tube to the probe bracket inlet fitting 22 Thread the nuts finger tight then tighten using a 7 16 inch wrench Do not overtighten 4 Tighten the two screws holding the steam generator bracket assembly to the chassis i 5 Connect the compression nut 16 holding the Teflon tube 17 I to the top of the steam generator T
4. to the terminal marked R on the Controller Board Make sure there is extra lead length so that the wires do not break as the screw is tightened Ensure that the wires are seated securely behind the respective washers see Figure 1 detail The two leads must not touch one another or any other component Do not calibrate a thermocouple until it is properly installed and positioned in the unit Bundle the chamber thermocouple lead 7 the new steam generator thermocouple lead microswitch leads 9 transducer leads 25 and reservoir sensor leads 10 together using nylon cable ties 6 approximately every 2 3 inches Secure the wires to the top of the armature using the cable anchors provided Carefully push the compressor tube 14 onto the check valve inlet 15 and secure the tube to the valve using a high temperature rated cable tie 13 Calibrate the steam generator thermocouple for non S units only See Thermocouple Calibration A dielectric strength test Hi Pot and a protective bonding impedance test ground continuity MUST be performed on the STATIM unit See Required Information Tools and Routine Maintenance Safety Compliance Run a sterilization cycle and observe all fittings and tubes for leaks Check LCD read outs for messages indicating cycle status Reinstall the cover See STATIM Cover Removal and Replacement STAT M L 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103920 Rev 4 0
5. 7 Carefully cut the cable tie 13 holding the compressor tube 14 onto the check valve inlet 15 and pull the tube off the valve 8 Using a3 8 inch wrench disconnect the compression nut 16 holding the Teflon tube 17 from the top of the steam generator 9 Using a 7 16 inch wrench disconnect the compression nut 18 holding the steam generator outlet tube 19 to the steam generator outlet fitting 20 CONFIDENTIAL STATIML 5000 5000S Cassette Autoclave Service Manual Steam Generator 96 103920 Rev 4 0 Steam Generator 10 Disconnect the compression nut 21 holding the steam generator outlet tube to the probe bracket inlet fitting 22 11 Remove the two screws 23 holding the steam generator bracket assembly 24 to the chassis and remove the steam generator See Steam Generator Thermal Fuse 21 19 18 20 16 17 1 steam generator 9 thermocouple wires 10 2 Controller Board 11 3 flag terminal 12 4 black thermal fuse wire 13 5 aluminum steam generator 14 6 cable ties 15 7 chamber thermocouple lead 16 8 steam generator 17 thermocouple lead FLOAT PROBE GASBIN 99 9666 chal KER BHEARAAAR RARAN KAKE 15 microswitch leads reservoir sensor leads armature white wire high temperature rated cable tie compressor tube check valve inlet compression nut Teflon tube 2 Figure 1 10
6. 96 103920 Rev 4 0 Steam Generator Steam Generator There are two types of steam generator you may encounter while servicing a STATIM 5000 5000S unit one is aluminum and the other is stainless steel The aluminum steam generator also has two versions one with a set of four stand offs on the bottom for positioning the thermal fuse and the other with two sets of four stand offs on the bottom See Steam Generator Thermal Fuse Removing the Aluminum Steam Generator CAUTION The steam generator may be hot if the unit has been operating Guard against burns To remove the steam generator follow these steps See Figure 1 1 Turn the power switch OFF and unplug the unit 2 Disconnect the steam generator thermocouple wires 1 from Controller Board 2 terminal positions BOILER Y and R and disconnect the flag terminal 3 from the position marked BOILER directly above the terminals Leave the screws with contact washers in the terminals 3 Disconnect the black thermal fuse 4 wire from Controller Board connector terminal block J1 3 See Steam Generator Thermal Fuse 4 Trace the path of the black wire back to the base of the steam generator 5 Carefully cut all cable ties holding the black wire 5 Carefully cut the cable ties 6 securing the steam generator thermocouple lead 8 and other wires to the armature 11 6 Disconnect the white wire 12 attached to the terminal on the lower half of the steam generator
7. 996 10 STAT M L 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL
8. hread the nut finger tight then tighten using a 3 8 inch wrench Do not overtighten 6 Reconnect the white wire 12 to the terminal on the lower half of the steam generator using the retained screw with lockwasher If the terminal appears blackened clean it using fine grit sandpaper If the terminal threads strip use a nut on the other side of the terminal to hold the screw l 7 Route the black thermal fuse wire 4 from the fuse assembly along m the back of the chassis with the other wires and connect it to Controller Board 2 terminal J1 3 8 Carefully bend and route the new steam generator thermocouple lead 8 alongside the chamber thermocouple lead to the Controller Board The leads must not touch the cover when the cover is assembled to the chassis CONFIDENTIAL STATIM L 5000 5000S Cassette Autoclave Service Manual Steam Generator 96 103920 Rev 4 0 Steam Generator 9 10 11 12 A 14 15 Carefully remove the protective sleeve from the end of the un insulated steam generator thermocouple leads Pre bend both leads to achieve the required shape Reconnect the flag terminal to the threaded lug marked BOILER on the Controller Board EXERCISE CAUTION The thermocouple leads at the board end are very fragile One lead is colour coded the unmarked lead is positive Y The red lead is negative R Connect the unmarked lead to the terminal marked Y on the Controller Board Connect the red lead
9. ing the steam generator into position aligning the bracket adapter s mounting holes with the mounting holes in the chassis using screws but do not tighten Reconnect the steam generator outlet tube by pushing it together as far as it will go and finger tighten Tighten the mounting screws holding the steam generator with the bracket adapter to the chassis Tighten the compression fitting nut into place make sure to use two wrenches one on the T fitting and the other on the nut Reconnect the water pump by tightening the nut with the Teflon tubing all the way into position CONFIDENTIAL STATIML 5000 5000S Cassette Autoclave Service Manual Steam Generator 96 103920 Rev 4 0 Steam Generator 6 10 11 12 13 14 15 Reconnect the compressor Silicone tube to its fitting and tighten with a high temperature rated cable tie Route the black and the white thermal fuse wires and connect these on the left side of the PC board in the BL set the black wire to the connection marked L and the white wire to the connection marked N Bundle the loose wires together using nylon cable ties every 2 3 inches Tighten the mounting screws to secure the compressor bracket to the chassis Reconnect the steam generator thermocouple to the PC board Put the pressure transducer board back into place in its bracket Bundle the chamber thermocouple lead the new steam generator thermocouple lead microswitch
10. leads transducer leads and reservoir sensor leads together using nylon cable ties approximately every 2 3 inches Secure the wires to the top of the armature using the cable anchors provided A dielectric strength test Hi pot and a protective bonding impedance test ground continuity Must be performed on the STAT M unit See Required Information Tools and Routine Maintenance Run a sterilization cycle and observe all fittings and tubes for leaks Check LCD read outs for messages indicating cycle status Reinstall the cover See Cover Removal and Replacement NOTE Calibration of stainless steel steam generator thermocouple on S class units is NOT required 8 STAT M L 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103920 Rev 4 0 Steam Generator Steam Generator Compression nut Steam generator outlet tube T fitting 2 Teflon tube Compressor tube Compressor bracket 1 Steam generator thermocouple lead 3 8 Bracket adaptor POO BO Nis Figure 3 9 een nnn CONFIDENTIAL STATIM L 5000 5000S Cassette Autoclave Service Manual Steam Generator 96 103920 Rev 4 0 Document Change Record Document 96 103920 Title Steam Generator 04 0020 Updated chapter as per prEN13060 requirements January 16 2004 99 0059 Added Added50008 April 14 1999 98 0290 SS replace line Text changed to include addition of December 2 1997 transducer if present 96 088 Initial Release May 29 1
11. y Teflon pipe fitting tape from the threads in the right angle valve fitting Prepare the right angle 4 fitting by wrapping the threads with Teflon pipe fitting tape minimum one complete wrap Thread the new valve onto the right angle valve fitting in the top of the steam generator 6 Using a 9 16 inch wrench on the end of the valve closest to the fitting tighten the valve SNUG Do not overtighten the new valve Use a 7 16 inch wrench to hold the right angle brass fitting so it does not move STATIM L 5000 5000S Cassette Autoclave Service Manual Steam Generator 96 103920 Rev 4 0 Steam Generator 6 7 8 1 high temperature rated cable tie 2 compressor tube 3 check valve 4 right angle brass fitting 5 Teflon tube 6 aluminum steam generator Figure 2 Carefully push the compressor tube 2 onto the check valve 3 and secure the tube to the valve using a high temperature application cable tie 1 Install replacement filters as required Reinstall the cover See Cover Removal and Replacement Removing the Stainless Steel Steam Generator Assembly see Figure 3 1 2 3 Turn the power switch OFF and unplug the unit Remove cover See Removing Cover Using a 7 16 wrench on the compression nut connected to the steam generator outlet tube and a 3 8 wrench on the T fitting disconnect steam generator outlet tube When the nut is unscrewed completely pull the tube apart gently to disengage it
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