Using this upper spray arm venturi is a breeze. First, find the center of the upper basket in your dishwasher. Carefully clip the venturi into place there. Then, attach the upper spray arm to the bottom of the venturi. When using your dishwasher, just run it as you normally would. As for maintenance, check the venturi regularly for any signs of wear or damage, especially if it's made of plastic. If you notice any cracks or breaks, it's best to replace it right away. Also, keep it clean by rinsing it under warm water every few months. And remember, since it's fully guaranteed, if you have any issues, you can rely on us for support.