Using this hand dryer is easy. Just place your hands under the dryer, and it will start drying your hands. You can adjust the speed according to your needs. When using, make sure your hands are not too wet to avoid splashing water around. As for maintenance, keep the dryer clean regularly. Wipe the surface with a soft cloth. If the HEPA filter needs to be replaced, follow the instructions in the user manual. Also, check the power connection from time to time to ensure safe operation.