Using this Dishlex Global pressure switch is straightforward. First, locate the old pressure switch at the bottom, near the middle of your dishwasher. Carefully remove the old one and install the new switch in its place. Make sure all connections are secure. When using the dishwasher, the switch will help regulate the water level as it's designed to do. As for maintenance, it doesn't need much. Just keep the area around the switch clean and free of debris. Check the connections periodically to ensure they're tight. If you notice any issues like incorrect water levels, it might be time to check the switch. And remember, it comes with a full guarantee, so if there are any problems, you're covered.