Inspection After Removal: Notes
- Place a string so that it is caught in the valve of the thermostat (or water control valve) and suspend it in boiling water. It must be fully immersed in the water.
- The valve opening temperature is the temperature at which the valve plate begins to rise from the top plate causing the thermostat to fall off of the string.
- Continue heating the water and thermostat to check the valve lift (the full-open valve lift distance).NOTE: The valve lift standard temperature for the thermostat (or water control valve) is the reference value.
- After checking the valve lift, lower the water temperature and check the valve closing temperature.