Pure water needs to be added to the water tank of Jiuyang steam rice cooker: the steam rice cooker pumps water into a steam generator for rapid heating, instantly converts it into 120 steam, and then uses high-temperature steam to heat it. If the water quality used is poor, impurities and scale in the water will precipitate when steam is formed, which will lead to the blockage of the steam generator. Using pure water can avoid this situation. But you don't have to worry. If there is blockage, you can run the machine cleaning program with citric acid to clean it.