THERMOSTAT INSPECTION


  1. INSPECT THERMOSTAT

    A003FSZ

    Tech Tips

    The valve opening temperature is inscribed on the thermostat.


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

    2. Check the valve opening temperature of the thermostat.

      Standard Valve opening temperature
      80 to 84°C (176 to 183°F)

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

    3. A003EGL

      Check the valve lift.

      Standard Valve lift
      10 mm (0.394 in.) or more at 95°C (203°F)

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

    4. Check that the valve is fully closed when the thermostat is below 77°C (171°F)..

      If it is not fully closed, replace the thermostat.