Norcold N500 Service Manual
Also see for N500: Owner's manualOwner's manualInstallation manualParts list
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Contents
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DRAFTNOT FOR PUBLIC RELEASE24 www.norcold.com/cdaN500/N510 Models Refrigerator Service ManualGas Safety ValveThe gas safety valve is mounted on the control panel inthe gas valve-thermostat assembly. This valve isdesigned to stop the flow of LP gas to the burner whena flame failure occurs. Its operation is controlled by thethermocouple, which connects directly to the gas valve’sinterrupter. During the ignition process, the valve buttonmust be held in (open) until a flame is established at theburner. See Figure 20.Gas Safety Valve ReplacementRefer to Figure 20 for locations of components.1. Turn OFF refrigerator.2. Unplug ac power cord.3. Disconnect 12 Vdc supply.3. Disconnect LP gas supply.4. Remove screws from back mounting flange (ifpresent).5. Remove retaining screws located on the front ofbreaker (will need to open door to remove).6. Remove refrigerator from enclosure.7. Remove wiring shroud (four screws).8. Remove thermostat knob.9. Remove gas valve-thermostat retaining screws (2).10. Mark interrupter wiring for ease of reinstallation11. Remove red and blue switch leads.12. Disconnect thermocouple.18. Install adapter.19. Reconnect interrupter.20. Reconnect thermocouple.21. Reconnect red and blue switch leads and blue flameindicator lead to interrupter.22. Install gas valve-thermostat assembly and retainingscrews.23. Replace thermostat knob.24. Replace wiring shroud.25. Install refrigerator in enclosure.26. Install front breaker retaining screws.27. Install back mounting flange screws.28. Reconnect RV LP gas supply.29. Reconnect 12 Vdc power supply.30. Plug in ac power cord.31. Place refrigerator in service.13. Remove interrupter14. Remove adapter.15. Disconnect gas outlet.16. Disconnect gas safety valve from thermostatassembly.17. Apply sealant to switch outlet threads.NOTEMake sure sealant does not extend beyond the threadsand onto the valve nipple.Figure 20. Gas valve - thermostat assemblyGas safetyvalveThermostatcontrol switchGas inletGas outletInterruptorRed wirefrom switchto interruptorBlue wirefrom interruptorto switchGroundwire (green)MountingbracketBracketretainingscrewsBrown wire(to ac heater)Black wire(from switch)CapillarytubeThermostatknob shaftValvebuttonThermocoupleA |
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