How to see if the refrigerant leaks in the high and low temperature test chamber

How to see if the refrigerant leaks in the high and low temperature test chamber How to check whether the refrigerant leaks in the high and low temperature test box; the standard high and low temperature test box and the constant temperature and humidity test box are all selected by the air-cooled compressor, and the working principle is the same as that of the air conditioning refrigeration, which will be selected in the refrigeration process The refrigerant is cooled, and once the refrigerant leaks, it will cause the test box to shut down, and the low temperature test and the humid heat test with a humidity of less than 85%RH cannot be performed. The compressor of the high and low temperature test chamber sucks the low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it through the motor working unit moving piston, and discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe to supply power for the refrigeration cycle. Then complete the contraction; condensation; expansion; transpiration (endothermic) refrigeration cycle. Assuming how to deal with refrigerant leakage? First of all, observe the pressure gauge on the back of the high and low temperature test box to see if the pressure is within the normal scale value. If it is lower than the normal value, it means that the refrigerant is leaking. Input high-pressure nitrogen into the copper pipe, and use a combination of leak detector and soapy water to check the leak point. Generally, only one leak point is needed, and sometimes there are multiple leak points, which is rare. After finding the leak point, the leak is welded and sealed with oxygen welding, and then the refrigeration system is filled with nitrogen, and the pressure is maintained for 48 hours. The pressure gauge pointer has not been changed during the pressure maintenance process, indicating that the leak point is now repaired normally, and the nitrogen is released , Fill the system with environmentally friendly refrigerants R404 and R23 refrigeration system to resume normal operation.