THERMOSTAT INSPECTION

PROCEDURE


  1. INSPECT WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

    CAUTION:


    • Do not put your hands into the water that has been heated for the inspection.


    • Touching the heated water could result in burns.

    B0084C9

    Tech Tips

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

    B004NBQ

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

      Note

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

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

      Standard Valve Opening Temperature
      80 to 84°C (176 to 183°F)

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

    3. B004N2QC01
      *a Valve Lift

      Check the valve lift.

      Standard Valve Lift
      8.0 mm (0.315 in.) or more at 95°C (203°F)

      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 72 °C (162 °F)).

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

    5. 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.