2. The method to remove the scale of the water storage tank is to clean it with a descaling spirit, scrub off the white scale on the water storage tank with a clean cloth, fill the water storage tank with clean water, and then put it into a piece of film (such as "Shuyikang Decontamination Effervescent Tablets rdquo" special for water dispensers in the store, and soak it for 15~30 minutes; Turn on all the switches of the water dispenser, including the drain pipe and the drinking water switch, to discharge liquid and eliminate liquid; Continue to pour boiling water or bottled water, continuously flush the whole cavity of the water dispenser, and then turn on all switches to discharge the flushing liquid. Repeat several times until the discharged water has no chlorine smell before drinking.