Using your Simpson SBM3800MA or SBM5100MA fridge lens light cover is easy. Just install it in the designated place in your fridge where the old cover was. Make sure it's properly fitted to avoid any issues. When it comes to maintenance, a simple wipe with a soft, dry cloth can keep it clean. If you notice any water spots or dirt, use a mild soap solution and then dry it thoroughly. Remember, this is a used part, so don't be alarmed by some minor appearance marks. The important thing is that it works well. Also, keep in mind that the 3 - month warranty only applies to operational problems. If you face any issues during the warranty period, contact us right away. And always pay for the return postage if you need to return the item under warranty.