Using this dryer door interlock switch is easy. Just replace the old switch with this new one in your Ariston, Hotpoint, or Indesit condenser clothes dryer. Make sure to match the terminals correctly. When installing, always unplug the dryer from the power source to avoid any electrical hazards. As for maintenance, keep the switch clean and free from dust. Check it regularly to ensure it's working properly. If you notice any issues like the dryer not starting or the door not locking, it might be time to check this switch. If you're unsure about anything, feel free to contact our customer service.