Using this Westinghouse oven thermostat is easy. First, make sure to turn off the power to your oven before replacing the old thermostat with this new one. Follow the included instructions carefully during the replacement process. When using the oven, you can set the temperature within the 50 - 320 degrees Celsius range according to your cooking needs. As for maintenance, keep the thermostat clean and free from dust and debris. If you notice any issues with the temperature control or the switch, turn off the oven immediately and check for any loose connections. And remember, we've got over 25 years of experience in supplying appliance parts, so if you have any other questions, feel free to reach out.