Bradford-White Corp M4503, CX), MI50L Resettable Thermal Switch Replacement, Over Tighten Screws

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SERVICE PROCEDURE RG-VII

Resetting Thermal Switch

Testing and Replacement

RESETTABLE THERMAL SWITCH REPLACEMENT

Step 1. Rotate knob of combination thermostat gas valve to the off position.

For White Rodgers Control, depress knob slightly and rotate clockwise to the “OFF” position.

For Robertshaw Control, rotate knob clockwise to the “OFF” position.

Step 2. Remove outer jacket door.

Step 3. Disconnect wire leads from resettable thermal switch.

Step 4. Remove resettable thermal switch from inner door (Phillips screw driver)

Step 5. Place new resettable thermal switch in place. Be sure contact surface of resettable thermal switch and inner door are free of any debris. Secure resettable thermal switch into place using screws from step 4. DO NOT

OVER TIGHTEN SCREWS.

Step 6. Reconnect wire leads from combination thermostat/gas valve to resettable thermal switch.

Note: Wire termination are interchangeable with either resettable thermal switch connection.

Step 7. Replace outer jacket door

Step 8. To resume operation follow the instructions located on the lighting instruction label or the lighting instruction located in the installation and operation manual.

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Contents MI30T*FBN,CX M430T*FBN,CX MI50L*FBN,CX M1XR403S*FBN,CX MI504S*FBN,CX M1XR504T*FBN,CXMI60T*FBN,CX M2XR504T*FBN,CX M2C504T*FBN,CX 50T65FBN,CX Table of Contents Introduction Bradford White Defender Safety SystemFlammable Vapor Ignition Resistant Water Heaters Troubleshooting ChartProceed to Inner Door Gasket Replacement Procedure Service Procedure RG-IFollowed exactly, a fire or explosion may result causing If the information in these instructions is notInstallation of Inner Door With Gasket Replace outer jacket burner access door Thermocouple Testing and Replacement Service Procedure RG-IIClosed Circuit Thermocouple Testing White Rodgers Control Closed Circuit Thermocouple Testing Robertshaw ControlThermocouple Replacement Open Circuit Thermocouple TestingPilot Assembly Inspection, Cleaning and Replacement Service Procedure RG-IIIService Procedure RG-IV Piezo Igniter, Electrode Testing and ReplacementPiezo IGNITER, Electrode Testing and Replacement Combination Thermostat/Gas Valve Testing Replacement Service Procedure RG-VCombination Thermostat/Gas Valve Testing and Replacement Line PressureThermocouple Testing Magnet Assembly Testing White Rodgers ControlMagnet Assembly Testing Robertshaw Control Combination THERMOSTAT/GAS Valve Replacement ECO Energy Cut Off TestingWrench Boss Explosion causing property damage Seal breach may result in a fire orPersonal injury or death Service Procedure RG-VI Main Burner Inspection, Adjustment Cleaning and ReplacementCast Iron Burner Adjustment Feedline Burner Cleaning Service Procedure RG-VII Resetting Thermal Switch Testing and ReplacementResettable Thermal Switch Continuity Testing Over Tighten Screws Resettable Thermal Switch ReplacementService Procedure RG-VIII ScreenLok Flame Arrestor CleaningScreenLok Flame Arrestor Cleaning Service Procedure RG-IX Dip Tube and Anode Inspection and ReplacementDIP Tube Inspection and Replacement Anode Inspection and Replacement Parts List Page Page Fax/215-641-1612
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