Automotive Air Conditioning Pressure Testing Method
1 Answers
The testing method for automotive air conditioning pressure is as follows: 1. On the high and low pressure pipelines of the air conditioning system: there are pressure test ports installed respectively, which can not only test the pressure of the air conditioning refrigerant pipeline but also charge or discharge the refrigerant. The test port is equipped with a one-way valve with the same structure as a tire valve core. If the one-way valve is not tightly sealed, the refrigerant in the pipeline will leak, causing the air conditioning system to fail to cool. To prevent this phenomenon, ensure that the plastic sealing cap on the test port is securely screwed onto the upper end of the test port. If the plastic sealing cap is missing, it should be replaced promptly. Otherwise, dirt and impurities will accumulate inside the test port, not only causing the one-way valve to seal poorly but also affecting the normal use of the test port. 2. If the air conditioning is not cooling: a simple method is to unscrew the plastic sealing cap of the test port and gently press the one-way valve with a clean, slender screwdriver. If the refrigerant is sufficient, white mist-like refrigerant will spray out. If no refrigerant overflows, it indicates that the refrigerant in the air conditioning pipeline has completely leaked.
