Using this hand dryer is easy. Just place your hands under the dryer, and it will start automatically. To adjust the air temperature and speed, you can use the control settings according to your preference. When it comes to maintenance, you should check the HEPA filter regularly. If it's dirty, you can access the separate chamber and replace the filter without disconnecting the dryer. Also, keep the dryer clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners as they may damage the surface. If you encounter any problems, refer to the warranty details or contact our customer service.