the temperature of the ordering cabinet should be controlled between-2 and 4 degrees celsius. The freezing point of meat is -1.7 degrees Celsius, which is the best temperature for cold storage of meat. It is difficult for supermarkets to do this because of the particularity of their industries.

The temperature distribution in the freezer is uneven. The temperature in the freezer presents a temperature gradient from top to bottom, with the lowest temperature at the upper level, about 3℃, and the highest temperature at the fruit and vegetable box at the lower level, about 6 ~ 11℃. According to national standards, the temperature in the freezer should be between 3 ~ 11℃.

A simple method for measuring the temperature of the cold storage room: put the thermometer into a cup filled with water, and then put the cup into the cold storage room, which is located in the middle floor near the back wall. Measure for at least 2 hours, then measure the temperature of the upper layer and the lower layer, and finally take the average value. In the "4" position, the temperature of the general refrigerator is about 7℃.

the factory settings are quite appropriate, and no additional settings are needed. Under normal circumstances, the temperature of the freezer should be MINUS 18 degrees, and the temperature of the freezer should be between 4 and 8 degrees. Of course, under the condition of ensuring the food in the refrigerator to be frozen and fresh-keeping, the higher the temperature is, the more electricity will be saved. For example, you can set the temperature in the freezer to 8 degrees. If there is not much food in the freezer or it doesn't need to be frozen for a long time, you can also raise the temperature in the freezer to between 12 and 16 degrees, which will save electricity, especially in summer when the temperature is high.