Using this Y - shaped hose is a breeze. First, make sure your dishwasher is turned off and unplugged. Locate the sump and the heater in your dishwasher. Then, carefully attach the hose between them. It should fit snugly without forcing. As for maintenance, regularly check the hose for any signs of wear or damage. If you notice any cracks or leaks, replace the hose right away. Always follow the dishwasher's user manual for additional guidance. And remember, it comes with a guarantee, so if you have any problems, you're covered.