Steri-Vac 8XL Gas Sterilizer/Aerator Service and Repair STERILIZER OPERATIONAL FLOW DIAGRAM 3M 1997 April 147
Service and Repair Steri-Vac 8XL Gas Sterilizer/Aerator STERILIZER OPERATIONAL FLOW DIAGRAM 148 3M 1997 April This page intentionally left blank
Steri-Vac 8XL Gas Sterilizer/Aerator Service and Repair Service and Repair STERILIZER OPERATIONAL FLOW DIAGRAM 3M 1997 April 149 System Intialization Verify MCU Check RAM RAM Okay? Default Variables Critical Options Initialize PCO's Initialize Keypad Initialize Clock Initialize Video Initialize ADC Turn On Interrupts Initialize Printer Calibrate RH Sensor Check Checksums Setup Info Checksum Okay? Cycle Info Checksum Okay? Start IRQ Interupt Clear Screen Yes Yes Yes Service Mode Gas Present? Aeration Option? Final Vacuum Option? Clear RH Setpoints in EEPROM Option? Trend Report Option? Screen Test Option? Site Setup Selected? Vacuum Test Selected? Solenoid Test Selected? Switch Test Selected? Stop Switch Pressed? Display Service Menu Yes Yes No Yes No Yes No Reprogram RH Set-points to Default Yes No Print or Display Trend Yes Info No Display Screen Pattern Yes No Perform Site Setup Yes No No No No No Perform Vacuum Yes Test Perform Solenoid Yes Test Perform Switch Test Yes E1 No E3 No E3 No Recovery Cycle In Progress? No Print and Display C3 Draw Cycle Screen Yes Aeration? No Yes Start Printer Display Errors Gas Inject Gas Expose Final Vac? Yes P > AmbientP - 80?Yes E54 Wait for Chamber Temperature If TO(45) E52 Gas Injection Stage? Gas Expose Stage? No Yes Yes No No No Purge? Heaters On (cycle) Heaters On (cycle) Vacuum On Open Vent Set Timer Yes No Go to sheet 2 Final Vacuum Go to sheet 3 Locked Aeration Go to sheet 2 Final Vacuum Go to sheet 2 Final Vacuum Go to sheet 2 Gas Injection Go to sheet 2 Gas Expose Go to sheet 2 Final Vacuum Go to Go to sheet 3 Purge Recovery Go to sheet 3 Locked Aeration Go to Service Mode Go to Main Menu Main Menu Passwords Enabled? No Display Main Menu Yes Valid Password? No Yes Adjust Aeration Time? Yes Adjust Cycle Temp? Yes No Start Cycle? Yes No No Compressed Air Okay? Water Level Okay? Yes Yes E10 No E11 No Analog Sensors Okay? Calibration Required? Yes Yes C12 No E4,E5, E6,E8, E9,E12 No Calibrate Analog Circuit Vacuum On Printer Report Header Go to sheet 2 Pre-Condition Go to sheet 2 Pre-Condition Stop Key Pressed? Yes No
Service and Repair Steri-Vac 8XL Gas Sterilizer/Aerator Steri-Vac 8XL Gas Sterilizer/Aerator STERILIZER OPERATIONAL FLOW DIAGRAM 150 3M 1997 April 3M 1997 April This page intentionally left blank
Steri-Vac 8XL Gas Sterilizer/Aerator Service and Repair Service and Repair STERILIZER OPERATIONAL FLOW DIAGRAM 3M 1997 April 151 Partial Puncture Error E75 Go to Gas Expose Gas Injection International Version? No Heatsink Cooldown If TO (20) E24 Yes Gas Inject Complete (50 sec)? Close Gas Relay Puncture Cartridge No Yes If P Sensor Error Delay Error E73 # P increases > 2? Delay Error E73 Temp Okay? (+/-2C) Yes No Delay Error E53 Too Hot E32 Too Cool Puncture Switch Okay? Yes No Stop Puncture Cartridge Heatesink Off Display Delay Errors Pressure Increase after Puncture < 50mBar? Print Error E77 Delay Errors? Check Pressure Sensor E73 No Pressure Increase after Puncture < 200mBar? Go to Final Vacuum Empty Cartridge Error E50 No No Yes Yes Yes P > AmbientP - 80 mBar? Yes Pump until P=AmbientP - 80 If TO(2) Delay Error E71 Increment # P increases No Yes Heatsink On (cycle) Gas Expose Complete? Check Pressure Sensor E73 # of P increases > 2? E73 No P > AmbientP - 80 mBar? Yes No Pump until P=AmbientP - 80 If TO(2) Error E71 Increment # P increases Temp Okay? (+/-2C) Yes No Yes Delay Error E53 Too Hot E52 Too Cool Gas Expose Go to Final Vacuum Final Vacuum Go to sheet 3 Purge No Yes Heatsink On (cycle) 50 cfm Abator Option? Wait for Abator Ready Signal If TO (120) C10 Send Gas Coming Signal for 20 Sec Yes Vacuum On Vacuum On P < 160 mBar? Check Pressure Sensor E73 50 cfm Option? Yes No If TO(30) E71 If TO(90) E71 Nitrogen Option? Yes No Nitrogen On P >= 800? Yes Nitrogen Off No 3 Minute Timeout? Yes No 50scfm Abator Option? Yes No PreCondition Test Vacuum for 1 min If P>AmbientP-52mBars E21 Wait for Chamber & Heatsink Temp If TO(45) E23 Preheat Option Wait 15 Min Close Vent Heatsink On (95C) Pumpdown to Target P, If TO(40) E22 No If TO(3) E39 Nitrogen Off Yes Chamber Leak Test Wait 5 Min If P increase 15 mBars E31 E30 No Yes Nitrogen Option? Nitrogen On No Yes Maximum Number of Injections? E29 No Open RH Solenoids Vacuum On (20sec) Read RH Close RH Solenoids Vacuum Off Yes 3rd Injection & No RH Increase? E28 No Yes 2nd Injection & No Heatsink Temp Decrease? E28 No Yes RH < 60%? No Yes Inject water (1sec) Wait (60sec) Open RH Solenoids Vacuum On (20sec) Read RH Close RH Solenoids Vacuum Off Cycle Starting (ON) No Final 3 Minute Vacuum Read RH Every 10sec Temp Okay? (+/-2C) Yes No Go to Gas Injection Number of RH checks < 5? Number of Long Dwells < 3? Yes Yes No E25, E26 If RH < 80 Inject (1sec) Wait (60sec) Open RH Solenoids Vacuum On (20sec) Read RH Close RH Solenoids Vacuum Off P >= 800? Rh < 2 or RH > 98? Heaters On (cycle) Heatsink On (cycle) Open Vent, Vacuum On Open RH Solenoids No Pulse Cartridge Pump 3 Minutes Pulse Cartridge Vacuum Off P < 250 mBar? Yes If TO(60) E71 Vacuum On Wait 3.5 Sec Vacuum Off No No Go to sheet 3 Purge Wait 3.5 Sec Increment # of Long Dwells
Service and Repair Steri-Vac 8XL Gas Sterilizer/Aerator Steri-Vac 8XL Gas Sterilizer/Aerator STERILIZER OPERATIONAL FLOW DIAGRAM 152 3M 1997 April 3M 1997 April This page intentionally left blank
Steri-Vac 8XL Gas Sterilizer/Aerator Service and Repair Service and Repair STERILIZER OPERATIONAL FLOW DIAGRAM 3M 1997 April 153 Open Vent Vacuum On Heatsink On (cycle) Initial 8 Minute Purge Done? Yes No Purge Check Obstructed Filter E72 PurgeCnt < 3? Close Vent Yes PurgeCnt = 0 7 Minute Vacuum Done? No Yes Pulse Cartridge Open Vent 8 Minute Purge Done? No Yes 7 Minute Purge Done? No Yes Open Vent Puncture Pin Stuck? No Open Vent No Open Latching Relay Stop Report Go to Locked Aeration Yes E77 Yes Cycle Starting (Off) 50 cfm Abator w/o Aeration? Locked Aeration No Start Timer Heaters On (cycle) Yes Heatsink On Heaters On Vacuum On Open RH Solenoid Chamber Temp within Range? No Locked Aeration Time Complete? Go to Unlocked Aeration Yes No Stop Key Pressed & Setup Code Entered? Yes No Check Aeration Heater Caution Adjust Vent A B UnLocked Aeration Start Timer Unlock Unload Door Heatsink On Heaters On Vacuum On Open RH Solenoid Unlocked Aeration Time Complete? Yes No Vacuum On Check Aeration Heater Caution Adjust Vent Yes Chamber Temp within Range? No Restart Timer Stop Timer Adjust Vent Handle Turned or Door Open? Yes Passords Enabled? Yes Valid Password? Door Open? No Yes Print Report Tailer Yes Cycle Starting (Off) 50 cfm Abator with Aeration? No Go to Standby Aeratio C No No C Vacuum Off Open Vent Stop Timer Handle Turned Down? No No Yes Yes Door Open? No Yes Print Door Opened Vacuum On Open RH Solenoids Locked Aeration? Standby Aeration? No Yes Yes A D C Stop Key Pressed? Yes No E E Handle Turned Down? Yes B NoNo Standby Aeration Yes Heaters Off Stop Timer 5 Second Beep Remove Gas Buildup? No Vacuum Off (3 Minutes) Vacuum On (2 Minutes) Handle Turned or Door Open? Yes No D Reset Cycle Yes Stop Report Stop Timer Heaters Off Heatsink Off Vacuum Off Latching Relay Closed? Nitrogen Off Clear Cautions Open Vent Close RH Valves Stop Puncture Unlock Load Door Stage = Standby Clear Errors No E76 Go to sheet 1 Main Menu
3 Health Care 3M Center Building, 275-4E-01 St. Paul, MN 55144-1000 1-800-228-3957 3M Canada Inc. P.O. Box 5757 London, Ontario, Canada, N6A4T1 1-800-563-2921 Printed on Recycled paper Printed in U.S.A © 3M 1995 November 78-6970-6954-6 Rev. C