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

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.