Thermostat: Testing and Inspection
THERMOSTATINSPECTION
1. INSPECT WATER INLET WITH THERMOSTAT SUB ASSEMBLY
a. The valve opening temperature is marked on the water inlet with thermostat sub-assembly.
b. Submerge the water inlet with thermostat sub assembly, and then gradually heat the water.
c. Check the valve opening temperature.
Valve opening temperature: 80 to 84°F (176 to 183°F)
HINT: The valve opening temperature is stamped on the water inlet with thermostat.
d. Check the valve lift.
Valve lift: 8.0 mm (0.315 inch) or more at 95°C (203°F)
HINT: If the valve lift value is not as specified, replace the water inlet with thermostat sub-assembly.
e. When the temperature of the water inlet with thermostat sub-assembly drops below 77°C, check that the valve is fully closed.
HINT: If the valve is not fully closed, replace the water inlet with thermostat sub-assembly.