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    How to solve the phenomenon that the low temperature of the high and low temperature test chamber cannot be maintained

    How to solve the phenomenon that the low temperature of the high and low temperature test chamber cannot be maintained First check whether the refrigeration unit of the high and low temperature box can be started during the operation of the high and low temperature test box. If the refrigeration compressor of the high and low temperature box can be started during the entire operation, it indicates that from the main switching power supply to each high and low temperature box The home appliance route of the compressor is normal, and there is no problem at the software level of the home appliance system. When the circuit system of the high and low temperature box is also no problem, then check the refrigeration unit again. First check the two rows of refrigeration units in the high and low temperature boxes. If the exhaust pipe and breathing working pressure of the ultra-low temperature (R23) refrigeration compressor are slightly lower than the standard value, and the breathing working pressure is evacuated, this indicates that the main refrigeration unit The amount of refrigerant is not enough. It has been determined that the common fault of the high and low temperature tank is the leakage of the refrigerant R23 of the ultra-low temperature (R23) level generating unit of the main refrigeration unit. Maintenance method of high and low temperature test box: leak detection is carried out on the refrigeration unit of the high and low temperature test box, and the leak point is checked by a tight combination of a leak detector and soapy liquid. If there is a gap, replace this relay. If leakage is found in other areas, use oxygen welding to repair the leak in detail. After the system is recharged with fluoride, the system software operation can only be recovered. It can be seen that the analysis and resolution of the common failure problems of the low temperature of the high and low temperature test chambers are maintained by the method of easy to difficult, first in the first, then in the first, then the electrical equipment and the air conditioner. Understanding and knowing the basic principle of the high and low temperature test chamber is the basic process of analyzing common faults and distinguishing common faults. I can only deeply understand the whole working process of the high and low temperature test chamber, and can quickly deal with the various problems that occur during the operation of the high and low temperature test chamber

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    Daily cold storage system maintenance method

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