THERMOSTAT INSPECTION

PROCEDURE


  1. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY


    1. Check the valve opening.

      Tech Tips

      The valve opening temperature is inscribed on the water inlet with thermostat sub-assembly.

      B004MDP

      1. B004JVIC01
        *a Inlet Pipe Side
        *b Valve Side

        Add 15 cc (0.9 cu. in.) of water to the water inlet with thermostat sub-assembly from the inlet pipe side.

      2. Confirm that water does not flow out from the valve side of the water inlet with thermostat sub-assembly.

        If water flows out from the valve side of the water inlet with thermostat sub-assembly, replace the water inlet with thermostat sub-assembly with a new one.

      3. B004MD6C01
        *a Connector
        *b Inlet Pipe
        B0071FR Temperature Sensor

        Immerse the water inlet with thermostat sub-assembly in water that is between 92°C (198°F) and 96°C (205°F) for 5 minutes or more.

        Note


        • Do not allow any water to come into contact with the connector of the water inlet with thermostat sub-assembly.

        • Make sure that the end of the inlet pipe of the water inlet with thermostat sub-assembly is not facing downward.

        • Make sure to immerse the water inlet with thermostat sub-assembly in the water as shown in the illustration.

      4. B004KW5C01
        *a Inlet Pipe

        Leave the water inlet with thermostat sub-assembly at ambient temperature for 5 minutes so that the valve closes.

        Note

        Make sure that the end of the inlet pipe of the water inlet with thermostat sub-assembly is not facing downward.

      5. Check that the water that was added to the water inlet with thermostat sub-assembly has completely flowed out.

        If the water that was added to the water inlet with thermostat sub-assembly has not completely flowed out, replace the water inlet with thermostat sub-assembly with a new one.

    2. Check the resistance of the temperature sensor.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        1 - 2 Always 10.6 to 14.2 Ω

        If the result is not as specified, replace the water inlet with thermostat sub-assembly.