Steam Generator Thermal Fuse
Contents
1. See Required Information Tools and Routine Maintenance 12 Runany sterilization cycle and observe all fittings and tubes for leaks Check LCD read outs for messages indicating cycle status 5 CONFIDENTIAL STATIML 5000 5000S Cassette Autoclave Service Manual Steam Generator Thermal Fuse 96 103916 Rev 4 0 Steam Generator Thermal Fuse Removing the Thermal Fuse on STAT M Units with Stainless Steel Steam Generators See Figure 3 1 2 Make sure the power switch is OFF and the unit is unplugged Remove the stainless steel steam generator See Removing STATIM S Class Unit Stainless Steel Generator Remove insulation sleeving on each heater terminal of the stainless steel steam generator and cut the cable tie 1 holding the fuse Remove the terminal screw 2 from each heater end Loosen the hose clamp 4 with a pair of pliers and slide it forward so that the thermal fuse can be removed It is not necessary to remove the hose clamp entirely Do this for both terminals Replacing the Thermal Fuse on STATIM Units with Stainless Steel Steam Generators NOTE The white thermal fuse wire N and the black thermal fuse wire L are provided with spare part number 01 108515S 1 Insert each thermal fuse through each hose clamp carefully making sure to connect the N and L wires to the correct terminals The N white wire connects to the lower heater end 15 and the L black wire conne2. 96 103916 Rev 4 0 Steam Generator Thermal Fuse Steam Generator Thermal Fuse Removing the Thermal Fuse on the Aluminum Steam Generator To remove the thermal fuse located between the steam generator and the steam generator bracket follow these steps see Figures 1 and 2 10 Carefully cut the high temperature rated cable tie 1 holding the compressor tube 2 onto the check valve inlet 3 and pull the tube off the valve Disconnect the black thermal fuse lead wire 4 from Controller Board connector terminal J1 3 and the white wire 6 from the steam generator Trace the path of the black wire back to the base of the steam generator 5 Cutall the cable ties holding the black wire Using a 3 8 inch wrench disconnect the compression nut 7 holding the Teflon tube 8 from the top of the steam generator Using a 7 16 inch wrench disconnect the compression nut 9 holding the steam generator outlet tube 10 to the probe bracket inlet fitting 11 and the compression 12 nut holding the steam generator outlet tube to the steam generator outlet fitting 13 Remove the two screws 14 from the steam generator bracket 15 The steam generator is still attached to the PCB by the thermocouple lead 16 Carefully cut the two cable ties closest to the steam generator that hold the thermocouple leads together Gently lift and turn the steam generator assembly onto one side to expose the bottom of the assembly Be care
3. Runa sterilization cycle and observe all fittings and tubes for leaks Check LCD read outs for messages indicating cycle status 9 Reinstall the cover See Cover Removal and Replacement 7 CONFIDENTIAL STATIML 5000 5000S Cassette Autoclave Service Manual Steam Generator Thermal Fuse 96 103916 Rev 4 0 OONOARON gt Steam Generator Thermal Fuse 10 Teflon tube 11 Steam generator outlet 12 Steam generator outlet tube 13 Steam generator thermocouple lead 14 Upper terminal 15 Lower terminal High temperature rated cable tie Terminal Screw Thermal fuse wire Hose clamp Insulation sleeving Chamber thermocouple lead Compressor tube Check valve Stainless steel steam generator Figure 3 STAT M L 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103916 Rev 4 0 Steam Generator Thermal Fuse Document Change Record Document 96 103916 Title Steam Generator Thermal Fuse 4 0 04 0020 Updated chapter as per prEN13060 requirements January 16 2004 3 0 99 0059 Added 5000S April 14 1999 98 0290 Revised line art replaced by photos Text changed to reflect November 21 1997 variations of fuse assembly and steam generator construction 96 088 Initial Release May 29 1996 9 CONFIDENTIAL STAT M L 5000 5000S Cassette Autoclave Service Manual
4. be placed exactly between the standoffs Attach the steam generator bracket to the steam generator 5 using the small screw 17 Do not pinch or crush the wire between components Ensure that the screw is tightened securely 2C For Type C configuration route the wire from the fuse assembly 21 between the two sets of standoffs 20 on the bottom of the modified steam generator 23 as shown in Figure 3 3 STATIML 5000 5000S Cassette Autoclave Service Manual Steam Generator Thermal Fuse 96 103916 Rev 4 0 Steam Generator Thermal Fuse TYPEA 1 steam generator 1 2 steam generator bracket 3 thermocouple lead 4 screw not shown 7 5 thermal fuse 3 5 TYPEB 2 1 6 7 3 8 TYPEC 10 9 6 7 3 6 steam generator electrical terminal 8 7 spacing stand offs 8 double thermal fuse 5 9 modified steam generator bracket 10 modified steam generator Figure 2 STAT M L 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103916 Rev 4 0 Steam Generator Thermal Fuse Steam Generator Thermal Fuse The fuse must be placed exactly between the standoffs Attach the steam generator bracket 15 to the steam generator using the small screw 17 Do not pinch or crush the wire between components Ensure that the screw is tightened securely l 3 Carefully return and attach the steam generator assembly to the a chassis using two screws 14 Start the screws into the tapped hole but do not tighten the
5. cts to the higher heater end 14 Connect the thermal fuse wires to each corresponding terminal end using the retained screws with lockwashers The thermal fuse wires must be positioned next to the corresponding terminal not above or below terminal Align the hose clamp with the heater end keeping it on the steel portion make sure three legs of the hose clamp are facing inward between the two heater ends and release it into position Do not scratch or crush the thermal fuse wires while aligning the hose clamp Attach insulation sleeving onto the terminal and make sure the insulation sleeving covers about 4 mm over the terminal Do this for both terminals STATIML 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103916 Rev 4 0 Steam Generator Thermal Fuse Steam Generator Thermal Fuse 5 From the hose clamp measure approximately 10 mm on the thermal fuse and bend it back towards the terminal end so that it forms aU Applying a high temperature rated cable tie at the edge of insulation sleeving between the insulation sleeving and terminal arm hold the terminal fuse into place Do this for both thermal fuse wires 6 Replace the stainless steel steam generator See Replacing Stainless Steel Steam Generator 7 Adielectric 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 8
6. ful not to stress the thermocouple leads Min bend radius 3 16 inch 5 mm Remove the small screw 17 that attaches the steam generator bracket to the steam generator Disconnect the thermal fuse 18 from the lower power terminal 19 on the steam generator Note the routing of the thermal fuse assembly between the bracket and spacing standoffs 20 on the bottom of the steam generator CONFIDENTIAL STATIML 5000 5000S Cassette Autoclave Service Manual Steam Generator Thermal Fuse 96 103916 Rev 4 0 high temperature rated cable tie compressor tube check valve inlet black thermal fuse wire aluminum steam generator white wire attaches here compression nut Teflon tube 9 compression nut 10 steam generator outlet tube 11 probe bracket inlet fitting 12 compression nut ONOARWAN gt o 11 14 15 3 4 1 2 13 steam generator outlet fitting 14 two screws obscured 15 steam generator bracket 16 thermocouple lead 17 screw 18 thermal fuse 19 steam generator electrical terminal 20 spacing stand offs 21 double thermal fuse r 22 modified steam generator Figure 1 bracket 23 modified steam generator 2 STAT M L 5000 5000S Cassette Autoclave Service Manual CONFIDENTIAL 96 103916 Rev 4 0 CONFIDENTIAL Steam Generator Thermal Fuse Steam Generator Thermal Fuse Replacing the Thermal Fuse on the Aluminum Steam Generator There are three thermal fuse configurations yo
7. screws Be careful not to stress the thermocouple leads Min bend radius 3 16 inch 5 mm 4 Connect the compression nut 12 holding the steam generator outlet tube 10 to the steam generator outlet fitting 13 and the compression nut 9 holding the steam generator outlet tube 10 to the probe bracket inlet fitting 11 Tighten finger tight 5 Connect the compression nut 7 holding the Teflon pump tube 8 to the top of the steam generator Tighten finger tight then continue to tighten the nut using a 3 8 inch wrench Do not over tighten 6 Tighten the two screws 14 that attach the steam generator assembly to the chassis 7 Using a 7 16 inch wrench tighten the compression nut holding the steam generator outlet tube to the steam generator outlet fitting and the compression nut holding the steam generator outlet tube to the probe bracket fitting also 8 Route the black wire 4 from the fuse assembly and connect the wire to Controller Board connector J1 3 Connect the white wire 6 to the steam generator electrical terminal 19 9 Bundle the loose wires together using nylon cable ties every 2 3 inches 10 If servicing a STATIM 5000 reinstall the compressor tube 2 onto the check valve inlet 3 and secure the tube to the valve with a high temperature rated cable tie 1 11 Adielectric strength test Hi Pot and a protective bonding impedance test ground continuity must be performed on the STAT M 5000 unit
8. u may encounter while servicing an Aluminum Steam Generator on a STATIM 5000 5000S unit Type A is a single thermal fuse wire 18 steam generator bracket 15 and an unmodified steam generator 5 Type B is a double thermal fuse wire 21 with a modified steam generator bracket 22 and an unmodified steam generator 5 Type C is a double thermal fuse wire 21 steam generator bracket 15 with a modified steam generator 23 Determine which configuration is being serviced and use the appropriate parts to service the unit To replace the thermal fuse follow these steps see Figures 1 and 2 1 Connect the thermal fuse terminal 18 or 21 to the lower power terminal on the steam generator 19 2A For Type Aconfiguration replace the steam generator bracket 15 with a modified steam generator bracket 22 Route the wire from the fuse assembly 21 between the standoffs 20 and the standoffs on the modified steam generator bracket as shown in Figure 2 The fuse must be placed exactly between the standoffs Attach the steam generator backet to the steam generator 5 using the small screw 17 Do not pinch or crush the wire between components Ensure that the screw is tightened securely 2B For Type Bconfiguration route the wire from the fuse assembly 21 between the standoffs 20 on the bottom of the steam generator 5 and the standoffs on the modified steam generator bracket 22 as shown in Figure 2 The fuse must
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