Thermostat: Testing and Inspection
THERMOSTATINSPECTION
1. INSPECT WATER INLET SUB-ASSEMBLY WITH THERMOSTAT
HINT: The water inlet with thermostat is stamped with the valve opening temperature.
a. Immerse the water inlet with thermostat in water and gradually heat the water.
b. Check the valve opening temperature.
Valve opening temperature: 80 to 84°C (176 to 183°F)
If the valve opening temperature is not as specified, replace the water inlet sub-assembly with thermostat.
c. Check the valve lift.
Valve lift: 8.0 mm (0.315 inch) or more at 95°C (203°F).
If the valve lift is not as specified, replace the water inlet sub-assembly with thermostat.
d. Check that the valve is fully closed when the water inlet with thermostat is at low temperature (below 40°C (104°F)).
If not close, replace the water inlet sub-assembly with thermostat.