Using this door catch is simple. Just align it with the designated spot on your AEG or Electrolux condenser dryer door and attach it. When closing the door, it will automatically latch shut. As for maintenance, keep it clean by wiping it with a dry cloth from time to time. Avoid using harsh chemicals or abrasive materials as they may damage the plastic. If you notice any issues with the latching, check for any debris or blockages around the catch. We guarantee this part, so if you have any problems, feel free to contact us.