how to test capillary thermostat?

Feb 26, 2023

Testing a capillary thermostat typically involves measuring the resistance of the switch at various temperatures and comparing the results to the manufacturer's specifications. Here are the steps you can follow to test a capillary thermostat:

Application of Home appliance

Locate the capillary tube of the thermostat. This is the thin, flexible tube that extends from the thermostat's sensing bulb to its switch mechanism.

Disconnect the power to the system that the thermostat is controlling. This will ensure your safety while testing the thermostat.

Attach a multimeter to the two electrical terminals of the thermostat's switch mechanism. Set the multimeter to measure resistance.

Immerse the sensing bulb of the thermostat in a container of ice water, or another substance at a known low temperature. Wait a few minutes for the temperature to stabilize, and then note the resistance reading on the multimeter.

Remove the sensing bulb from the ice water and immerse it in a container of hot water, or another substance at a known high temperature. Wait a few minutes for the temperature to stabilize, and then note the resistance reading on the multimeter.

Compare the resistance readings to the manufacturer's specifications. If the readings are within the specified range, the thermostat is functioning properly. If the readings are outside the specified range, the thermostat may need to be replaced.

If you have any requirements on capillary-thermostat, just contact our Jaye Heater Technology info@jaye-heater.com

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