Using this soap dispenser is easy. First, install the power supply. You can choose either a 4xAA alkaline battery pack or an A/C adapter. Then, if you're using the Multi - Feed system, connect the “6 - SOAP - MFT” Soap Multi - Feed Tank. When you place your hand under the spout, the touch - free dual sensors will detect it and dispense the soap. The indicator light at the base of the spout will show you the power status, when it's activated, and when the soap is running low. As for maintenance, regularly check the soap level and refill the tank when needed. Keep the dispenser clean by wiping it with a soft, damp cloth. Make sure to use liquid soap with a viscosity between 100 cps and 5000 cps. Also, note that this is a non - returnable item. If you have any problems, contact the customer service team.