Using this dispenser is easy. First, make sure it's properly mounted on the wall. Then, insert a compatible Pacific Blue Ultra refill into the dispenser following the easy - load design. When you need to use it, just place your hand under the dispenser, and it will automatically dispense the soap or sanitizer. As for maintenance, replace the batteries when they run out to keep the dispenser working. Also, always use only Pacific Blue Ultra refills to ensure proper function. Keep in mind that this dispenser is designed for commercial use, so use it in appropriate settings. And if you notice any issues with the dispenser, check if the refill is inserted correctly or if the batteries need replacement.