How to solve the slow cooling of high-altitude test equipment | high and low temperature test chamber?

　　The high and low temperature test chamber is a test that simulates the natural high and low temperature change environment, and is widely used in the test of the adaptability of electronics, electrical products and other product parts and components to the temperature environment during the use of storage and transportation. In particular, the electrical properties are changes in mechanical properties. However, in the use of high and low temperature test chambers may appear slow cooling situation, how to solve this? The following is the sharing of the small editor of the high-altitude test equipment:

　　1, because the temperature can not be maintained, observe whether the refrigeration compressor can start during the operation of the test chamber, the compressor can be started during the operation of the environmental test equipment, indicating that the electrical circuit from the main power supply to each compressor is normal, and there is no problem in the electrical system.

　　2, there is no problem with the electrical system, continue to check the refrigeration system. First of all, the exhaust and suction pressure of the low temperature (R23) stage compressors of the two groups of refrigeration units are lower than normal, and the suction pressure is in an emptying state, indicating that the refrigeration dose of the main refrigeration unit is insufficient.

　　3. Touch the exhaust and suction lines of the R23 compressor of the host group by hand, and find that the temperature of the exhaust pipe is not high, and the temperature of the suction line is not low (not frosted), which also shows the lack of R23 refrigerant in the host group.

　　The above solution to the slow cooling of the high and low temperature test chamber is shared here for everyone, under normal circumstances, the high and low temperature test chamber will be cooled to the corresponding value according to the set time range, but due to the long use of the equipment, or improper operation, it will cause the high and low temperature test chamber to cool down slowly, and everyone needs to pay attention to avoid it when using it.