Specific failure: Frequent “jump†phenomenon occurs during the daytime in the constant temperature and humidity test chamber, and the refrigeration effect is normal at night.
Analysis: The cooling effect is normal at night, indicating that the refrigeration system and the circuit system are working properly. This indicates that it is caused by the outside of the constant temperature and humidity test box because of poor cooling of the condenser.
Check: The condenser has poor heat dissipation due to: (1) the condenser is too dirty; (2) there is air in the refrigeration system; (3) the surrounding air does not flow; (4) the ambient temperature is too high; (5) inside the condenser Surface oil film.
Result: The cooling effect of the chamber was normal at night, which ruled out (1), (2), (3) and (5) above. Moving the test box to another place will no longer "jump." From this, it is determined that the condenser is not properly cooled due to the proximity of the constant temperature and humidity test chamber to the heat source.
Solution: Remove the malfunction by moving the constant temperature and humidity test chamber away from the heat source and ventilation.
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Dongguan Powerme Tech. Co., Ltd. , https://www.powermetech.com