Using this soap dispenser is a breeze. First, select your preferred power source, either the battery pack with 4xAA alkaline batteries or the A/C adapter. Then, fill the 70.5oz soap tank through the top - fill opening with any non - proprietary bulk foam soap. When you place your hands under the dispenser, the touch - free dual sensors will detect them and dispense soap. Keep an eye on the indicator light at the base of the spout. It shows if the dispenser is powered, when it's activated, and when the soap is running low. As for maintenance, regularly check the soap level and refill it when needed. Clean the exterior of the dispenser with a soft, damp cloth. Avoid using abrasive cleaners as they may damage the PVD finish. Since it's vandal - resistant, it can withstand some rough handling, but still, try to keep it in a safe environment. And remember, this item is non - returnable, so make sure it's the right fit for you before purchasing.