Three methods to check whether there is leakage of air-conditioning refrigerant_maintenance

　　 Summer driving z*The sad reminder is that the air conditioner in the car is not cooling, and the common fault in the air conditioner is the leakage of refrigerant. The leakage of refrigerant not only increases the cost and time of car owners to maintain the vehicle, but also easily causes the environment. Pollution. The editor has compiled 7 methods to check for refrigerant leaks.

　　s* The leak can be detected by visual inspection first, but this method can only see the larger leaks, and the subtle leaks are difficult to find.

　　 The second method can be leak detection by soapy water, s* first flush 10-20kg/cm2 of nitrogen pressure into the system, and then apply soapy water to all parts of the system, the bubbling part is the leak point. This method is currently a common leak detection method in roadside repair shops z*, but people’s arms are limited, and people’s eyesight is limited, and in many cases no leaks can be seen at all.

　　 The third type is gas differential pressure leak detection. The pressure difference between the inside and outside of the system is used to amplify the pressure difference through the sensor, and the leak detection results are expressed in digital, sound or electronic signals. This method can only qualitatively know whether the system is leaking and cannot accurately find the leak point.

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