Using this Samsung front - loader door interlock switch is straightforward. Just install it in your washing machine according to the original switch's position. Make sure to match the terminals correctly. When using your washing machine, the switch will lock the door during the wash cycle, ensuring safety. As for maintenance, keep the switch clean and dry. Check regularly for any signs of wear or damage, like loose connections or broken parts. If you notice any issues, replace the switch promptly. And don't forget, with our 25 - year experience in supplying appliance parts, you can rely on this product.