For the failure of the constant temperature and humidity test chamber, the early inspection is very important

For the failure of the constant temperature and humidity test chamber, the early inspection is very important What should I do if there is an abnormality in the constant temperature and humidity test chamber, can we only wait for the after-sales personnel to come to check? Of course not. Only if the user has mastered some basic troubleshooting techniques, then he can solve it by himself and save his time. Today, this article will talk about the reasons why the constant temperature and humidity test chamber does not cool, and from which direction the user should check. 1. Check whether all the alarm protection functions are normal, whether the compressor of the constant temperature and humidity test chamber is started, check the pressure gauge of the compressor, and check whether the internal refrigerant leaks; if the refrigerant is too low, it is necessary to detect the leak and replenish the refrigerant. Only then can the constant temperature and humidity test chamber be cooled normally; Second, check whether the condensing fan is operating normally, check whether the dust at the air inlet is too thick, check whether the internal circulation fan of the box is operating normally, check whether the AC contactor of the compressor and the thermal overload protector are damaged; check the solenoid valve in the pipeline Whether it is open, check whether the solid state relay of the heating system is damaged, affecting the cooling system; 3. As the constant temperature and humidity test chamber part will use the cascade cooling method, if one of the compressors does not work normally, it will also cause the equipment to not cool down normally; check whether the compressor control system is working properly and check the compressor operation Whether there are abnormal noises, or abnormal working sounds, which will lead to the inability to cool down; 4. Check whether the data transmitted by the temperature sensor of the constant temperature and humidity test chamber to the instrument is normal. If it is abnormal, the compressor will not start.