Using this door interlock switch is straightforward. First, make sure your washing machine is unplugged to avoid any electrical risks. Then, locate the old switch and carefully remove it, following the wiring connections. Install the new switch in the same place, ensuring all the wires are properly connected. As for maintenance, keep the switch clean and dry. Regularly check for any signs of wear or damage. If you notice any issues, don't hesitate to contact us. And remember, if you're unsure whether this switch fits your washing machine model, check with us using your model number before making a purchase.