Using this thermostat is quite easy. First, mount the capillary onto the freezer compartment as it's designed to work closely with the freezer's temperature. Then, use the included mounting bracket to install the thermostat in the right place inside your refrigerator. The built - in on/off switch allows you to control the power easily. Just turn it on when you want the fridge to run and off when you don't. When it comes to maintenance, keep the thermostat clean. Wipe it gently with a dry cloth from time to time. Don't use any harsh chemicals as they may damage the parts. If you don't need the push - button defrost function, make sure to choose the appropriate replacement. And remember, since we have over 25 years of experience in supplying appliance parts, if you have any questions, you can always reach out to us.