Using this soap dispenser is easy. First, remove the top cover and fill it with your favorite liquid soap up to the 50.7 - ounce capacity. Then, plug it into an AC power source. When you place your hand under the dispenser, it will automatically dispense soap. As for maintenance, clean the exterior regularly with a soft, damp cloth to keep the bright stainless finish looking good. Don't use abrasive cleaners as they may scratch the surface. Also, make sure to refill the soap in a timely manner to avoid running out. And always unplug it from the power source before cleaning or refilling to ensure safety.