THERMOSTAT INSPECTION

PROCEDURE


  1. INSPECT THERMOSTAT

    Tech Tips

    A01WWFOE02

    The valve opening temperature is inscribed on the thermostat.

    Text in Illustration
    *a 76°C

    1. Immerse the thermostat in water and then gradually heat the water.

    2. Check the valve opening temperature.

      Valve opening temperature
      74 to 78°C (165 to 172°F)

      • If the valve opening temperature is not within the specified range, replace the thermostat.

    3. A01WVE5E02
      Text in Illustration
      *a Valve Lift

      Check the valve lift.

      Valve lift
      10 mm (0.394 in.) or more at 90°C (194°F)

      • If the valve lift is not as specified, replace the thermostat.

    4. Check that the valve is fully closed when the thermostat is at low temperatures (below 40°C (104°F)).


      • If not fully closed, replace the thermostat.