Thermostat: Testing and Inspection

INSPECTION

THERMOSTAT CHECK





1. Immerse the thermostat in water, and heat the water while stirring. Check the thermostat valve opening temperature.
Standard value: Valve opening temperature: 82± 1.5°C (180± 3°F)






2. Check that the amount of valve lift is at the standard value when the water is at the full-opening temperature.
NOTE:
Measure the valve height when the thermostat is fully closed, and use this measurement to compare the valve height when the thermostat is fully open.

Standard value:

Full-opening temperature:95°C (203°F)
Amount of valve lift: 8.5 mm (0.33 inch) or more