First, unplug the machine. Safety first, even if you’re feeling lazy. Remove the water bottle, then pull off the drip tray and the cold/hot water faucet covers. Most models have these parts designed to snap off easily—like a Lego set for adults.
Set those parts aside in a sink filled with warm, soapy water. Let them soak while you attack the main unit. This is the moment to whisper a little thank-you to your dispenser for never complaining about your daily gallon of iced coffee.
How to Clean a Water Dispenser: 10 Steps (with Pictures) - wikiHow