Using this Ariston and Indesit oven function selector switch is easy. Just install it in place of your old switch following the oven's installation guide. When you're operating the oven, turn the switch to the desired position to select the function you want. As for maintenance, keep the switch clean by using a dry cloth to wipe off any dust or debris regularly. Check the connections from time to time to make sure they're secure. If you notice any signs of damage, like loose connections or burnt contacts, replace the switch right away. Before attempting any installation or maintenance, always unplug the oven from the power source to avoid electric shock. If you're not sure about the installation process, it's a good idea to get help from a professional.