Using your Crestt Series soap dispenser is easy. First, install the power supply. You can choose between a battery pack (4xAA alkaline) or an A/C adapter. Then, if you're using the Multi - Feed system, buy the “6 - SOAP - MFT” Soap Multi - Feed Tank separately and fill it with liquid soap having a viscosity between 100 cps and 5000 cps. When you place your hand under the spout, the touch - free dual sensor will detect it and dispense soap. The indicator light at the base of the spout will show if it's powered, when it's activated, and when the soap is running low. As for maintenance, check the soap level regularly and refill as needed. Keep the dispenser clean by wiping it with a soft, damp cloth. Make sure to follow the ADA guidelines and be aware that it's a non - returnable item. Also, since it has a vandal - resistant design, it's built to last, but avoid any rough handling.