Analysis of Slow Temperature and Humidity Box Cooling Down

　　 The constant temperature and humidity test box mainly provides the environment of high temperature, high humidity, low temperature and low humidity to test the heat resistance, cold resistance, dryness and moisture resistance of various materials or products.

For various reasons (such as improper user operation or problems in a certain part of the equipment, etc.), the constant temperature and humidity chamber will experience slow cooling and will not achieve the cooling test effect, so the test cannot be carried out smoothly. Then, when this happens, how can we analyze and solve the problem of slow temperature and humidity constants? Let's study and discuss together:

Reason one:

1. There is no problem with the electrical system. Next, we check the refrigeration system. If the exhaust and suction pressures of the low-temperature compressors of the two sets of refrigeration units are lower than the normal values, and the suction pressure is in an empty state, it means that the amount of refrigerant in the main refrigeration unit is insufficient.

2. Touch the exhaust and suction piping of the main unit compressor by hand. If the temperature of the exhaust pipe is not high, the temperature of the suction pipe is not low (unfrosted), which also indicates the lack of host groups. Refrigerant.

3. Unable to maintain the temperature will cause the temperature and humidity chamber to cool slowly. Then, we first observe whether the refrigeration compressor can be started during the operation of the constant temperature and humidity test chamber. If the compressor can be started during the operation of the environmental test equipment, the electrical circuit from the main power supply to each compressor is normal, and the electrical system There is no problem with the aspect, then we will exclude the compressor from working.

　　 

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