We all know about ultra-low temperature refrigerators. They are also called ultra-low temperature storage boxes, ultra-low temperature storage boxes, etc. They are often used to store vaccines, biological samples, semen and other substances. They are widely used in scientific research laboratories, biology, medical and other industries. During our use, we found some common problems with ultra-low temperature refrigerators, as follows:

　　1. The actual temperature in the box does not reach the set temperature

　　If the temperature displayed on the panel has reached the set temperature, but the actual temperature measured in the box has not reached, then we should check whether the thermistor measured by the temperature is damaged.

　　2. The refrigeration effect of the refrigerator is poor, and there is a sense of electric shock when touching the metal part of the box

　　In this case, the general meter can be used to measure whether there is leakage, and the measurement shall be conducted in sections:

　　① Power on the high-temperature compressor independently, and use a universal meter to measure whether the compressor leaks.

　　② Check the terminals of the compressor statically, and observe the wire plugs in the motor windings. If there are traces of ignition with the housing, it indicates that there is leakage in this part.

　　3. The air switch of the main power supply is automatically disconnected after the power is connected

　　Check whether the compressor of the refrigeration system is damaged. If it is damaged, it will lead to automatic protection caused by short circuit. Replace the corresponding accessories.

　　4. Insufficient cooling of refrigerator

　　In this case, it can be checked whether there is frost on the surface of the evaporator, whether the opening and closing frequency of the box door is too high, whether there are sundries stacked around and on the top, and whether there are too many items stored inside.

　　5. Too much noise

　　First, check whether the floor and refrigerator are firm. If not, adjust the screws to make the refrigerator stand on the floor stably. Second, ensure that there are no sundries and contacts around and on the top of the refrigerator.

　　The above are some common problems with the use of ultra-low temperature refrigerators. I hope they can help you. If you want to know more about them, you can visit the official website of Haisiyuan www.hsy515.cn!

　　报错 笔记

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