Freezer maintenance knowledge

Frost is a poor conductor. The conductivity is 1/350 of aluminum. The frost covers the surface of the evaporator and becomes a heat insulation layer between the evaporator and the food in the box, which affects the heat exchange between the evaporator and the food in the box. The temperature in the box cannot be lowered, which reduces the refrigeration performance of the freezer, increases power consumption, and even causes the compressor to heat up due to long-term operation, and it is easy to burn the compressor. In addition, there is a variety of food odors in the frost, and if it is not defrosted for a long time, the refrigerator will emit a peculiar smell. Under normal circumstances, when the frost layer is 5mm thick, it is necessary to defrost.