During the use of the dishwasher, different degrees of scaling will appear on the inner wall and tableware. With the increase of usage and the passage of time, the scale of the dishwasher will increase, and the tableware cleaning effect will become worse and worse. So, why does the dishwasher have scale? Let's take a look. Why does the dishwasher have scale? 1. It is a problem of our domestic environment. The water purification hardness standard of our tap water plant is less than or equal to 450, which means that the hardness of tap water is very high and the water contains a large amount of calcium and magnesium ions. These calcium and magnesium ions will undergo chemical reactions when heated and convert into calcium carbonate, which is what we see as scale. 2. The residues, soy sauce and other grease left by washing tableware can easily cause scale in the dishwasher. 3. On the other hand, there is sediment in the tap water itself, which is easy to deposit in the dishwasher, and this reason causes less scale. Adverse consequences caused by scale 1. Affecting the washing effect The heating plate is the place where scale is most likely to accumulate, and scale is mainly composed of calcium carbonate, which is a poor conductor of heat, which will cause the water to heat slowly. The water temperature may not rise to the specified temperature within the specified time, which may lead to unsatisfactory washing results. In addition, scale can easily block the water outlet of the spray arm. The spray arm rotates because of the impact balance of the internal water. If one of the water outlets is blocked, the spray arm will not rotate, which will affect the washing effect. Some dishes and dishwashing powder will not even touch the water. 2. Power consumption will increase. Since scale will accumulate on the heating plate of the dishwasher, it will prevent the heating plate from directly contacting with water. Since scale is a poor conductor of heat, the heating efficiency of the heating plate will be greatly reduced, and the power consumption of heating water will be greatly increased. 3. Damage to the machine. Scale accumulation can easily cause damage to the heating plate. If scale accumulates on the heating plate in large quantities, some areas of the heating plate will contact water and some areas will contact scale. The specific heat capacity of the two is different, and the temperature will be different after heating for a period of time. This will cause a large temperature difference in different areas of a heating plate, which is easy to damage the heating plate. 4. Damage to health According to chemical analysis of scale by chemical experts, it is found that scale contains a variety of harmful heavy metal substances, including cadmium, lead, iron, arsenic, mercury, etc. Drinking water containing scale frequently can cause lesions in the digestive, nervous, urinary, hematopoietic, circulatory and other systems and cause aging, so removing scale is very necessary for our health. The scale in the dishwasher is mainly due to the water itself. The hardness of the water is very high and contains a large amount of calcium and magnesium ions, so scale appears. Scale has adverse effects on the dishwasher and health, so the scale in the dishwasher should be cleaned regularly. If you are interested in how to deal with scale in the dishwasher, you may wish to pay attention to the official website of SHINELONG and check the relevant information! .