Using the Bobrick B - 2892 toilet paper dispenser is easy. First, unlock the tumbler lock if it's locked. Then, slide open the access panel. Take out any empty rolls and insert two new 10' (255mm) rolls with a 2 1/4' (55mm) core or convert it to fit 3' (75mm) core rolls. Close the access panel. You can see the paper level through the wide viewing slot on the door. When the paper runs low, just repeat the process to reload quickly. As for maintenance, wipe the satin - finish stainless steel surface regularly with a soft, damp cloth to keep it clean and shiny. Make sure the tumbler lock works properly and lubricate it if needed. Keep the dispenser away from sharp objects to avoid scratches.