Using this Gojo TFX soap dispenser is a breeze. First, make sure you have three C-size batteries and insert them into the dispenser. Then, fill the dispenser with a 1200-ml foam soap refill. Once it's set up, just place your hands under the dispenser, and it will automatically dispense the perfect amount of soap. When the extra-large window shows that the soap is running low, it's time to refill. As for maintenance, keep the dispenser clean by wiping it with a damp cloth regularly. Avoid using abrasive cleaners that could damage the plastic. Also, when the batteries are exhausted after about 30,000 actuations, replace them with new ones to keep the dispenser working smoothly.