Using this oven thermostat is quite straightforward. First, make sure your oven is turned off and unplugged. Then, carefully install the thermostat according to the provided instructions. You'll need to make some wiring changes if your stove has an old Invensys type control. When it comes to setting the temperature, you can use the 5 - position switch to select the desired temperature between 50 and 320 degrees C. As for maintenance, keep the thermostat clean by wiping it gently with a dry cloth. Check the wiring regularly for any signs of damage. Remember, if you have any questions or encounter problems, don't hesitate to contact us. We've been in the appliance parts business for over 25 years and are here to help you.