After the disinfection pot is used for a period of time, the stainless steel electric heating plate will have scale. If the scale is too thick, it will affect the normal operation of the disinfection pot. It will automatically shut down after a few minutes of operation, and the water in the electric heating plate does not completely evaporate. To remove scale: Pour rice vinegar or citric acid into the hot plate. The sterilizer does not need to be energized. Soak for about half an hour, the scale will be eliminated by itself. If there is scale, wipe it with scouring pad or replace rice vinegar. To reduce scale, it is recommended to use purified water. Do not immerse the unit in water for cleaning when cleaning.