THERMOSTAT INSPECTION

PROCEDURE


  1. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY


    1. Immerse the water inlet with thermostat sub-assembly in water and then gradually heat the water.

    2. Check that the valve of the water inlet with thermostat sub-assembly opens at the specified temperature.

      Standard Valve Opening Temperature
      Specified Condition
      80 to 84 °C
      176 to 183 °F

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

    3. B004PVWC02
      *A Compression Spring Shape: Tapered
      *B Compression Spring Shape: Straight
      *a Valve Lift
      *b Compression Spring

      Check the valve lift.

      Standard Valve Lift
      Compression Spring Shape Condition Specified Condition
      Tapered 95°C (203°F) 10 to 14 mm
      Tapered 95°C (203°F) 0.394 to 0.551 in.
      Straight 95°C (203°F) 8 mm or higher
      Straight 95°C (203°F) 0.315 in. or higher

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

    4. Check that the valve is fully closed when the water inlet with thermostat sub-assembly is at low temperatures (below 77°C (171°F)).

      If it is not fully closed, replace the water inlet with thermostat sub-assembly.