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Constant temperature and humidity chamber is not cooling reasons

Date:2016-12-09 Author: Click:

Due to the use of too long, three years or five years, lack of maintenance, will inevitably lead to constant temperature and humidity chamber is not cooling the case occurs, when the constant temperature and humidity chamber does not cool this situation, the control of constant temperature and humidity chamber What should we do for the price? In the case of

The first inspection method: When the constant temperature and humidity box is the temperature can not hold, for example, set the temperature of minus 20 degrees, but has only stayed at room temperature 20 degrees or 10 degrees, and can not reach the default low temperature range, we Should first observe the refrigeration compressor in the process of running the test box is able to start? If the compressor in the environmental test equipment can be started during the operation, indicating from the main power supply to the compressor electrical lines normal, electrical system is also no problem. In the case of

The second inspection method: constant temperature and humidity chamber electrical system no problem, the next step, we continue to check the refrigeration system. First check the two groups of low-temperature compressor unit exhaust and suction pressure are lower than the normal value, and the suction pressure was evacuated, indicating that the main cooling unit of the amount of refrigerant is insufficient, then need to increase the refrigerant. In the case of

The third inspection method: hand touch the main unit of the compressor exhaust and suction lines, if the exhaust pipe temperature is not high, the suction pipe temperature is not low (not frost), which also shows The host group of R23 refrigerant lacks, then need to contact the manufacturer to charge refrigerant. Of course, for the constant temperature and humidity chamber of the full maintenance of the best or constant temperature and humidity test box manufacturers to send a professional technician for maintenance, because it is filled with refrigerant, but also involves the skills, if not filled, then easily lead to Refrigerant filling insufficient or uneven, will be prone to many details of the problem.


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