Using this soap dispenser is easy. First, if you're using the Multi - Feed system, make sure you've bought the “6 - SOAP - MFT” Soap Multi - Feed Tank and installed it properly. Then, choose your power supply, either the battery pack or the A/C adapter, and set it up. When you place your hand under the spout, the touch - free dual sensors will detect it and dispense soap. The indicator light at the base of the spout will let you know if it's powered on, when it activates, and when the soap is running low. As for maintenance, keep the dispenser clean by wiping it regularly with a soft cloth. Check the anti - rotational gasket/washer periodically to ensure it's in good condition. If you need to change the power source or refill the soap, follow the instructions for your specific system. Remember, this is a non - returnable item, so handle it with care. Also, make sure the soap you use has a viscosity between 100 cps and 5000 cps for the best performance.