Using this soap dispenser is easy. First, select your power source, either the battery pack with 4xAA alkaline batteries or the A/C adapter. Then, fill the 70.5oz top - fill soap tank with liquid soap having a viscosity between 100 cps and 5000 cps. Wave your hand in front of the sensors for touch - free dispensing. The indicator light at the base of the spout will show power status, activation, and when the soap is low. Remember, this is a non - returnable item. For maintenance, keep it clean with a soft cloth. Avoid using harsh chemicals that could damage the brushed stainless finish or the PVD surface. Make sure the anti - rotational gasket/washer is in place to maintain the vandal - resistant feature. Also, since it complies with ADA guidelines, ensure it's installed properly to meet those standards.