There are two ways to remove the tray from a commercial beverage refrigerator. You can remove it by pulling it forward, or you can remove it by sliding the rear shelf. If you want to clean the inside of the refrigerator, you should use a cleaning cloth, and make sure you cover all surfaces. After that, you can wipe down the inside of the refrigerator with a clean damp cloth. After cleaning the refrigerator, be sure to check the rubber seal around the door to make sure it is still cold.