Using this Bradley soap dispenser is easy. First, install it on the wall following the ADA standards and local codes. Open the plastic battery box and insert 4 AA batteries. Then, fill the reusable plastic reservoir with liquid soap. When your hand comes within 2 to 3 inches of the dispenser, it will automatically release 27 - ounce foam soap. For maintenance, regularly clean the stainless - steel tank body with a soft cloth to keep its architectural satin finish looking great. Check the battery level frequently and replace the batteries when they run low. Avoid using abrasive cleaners on the dispenser to prevent damage to the plastic and stainless - steel parts.