What are the steps for evacuating the air conditioning pipeline in a car?
2 Answers
The steps for evacuating the air conditioning pipeline in a car are: 1. Connect the high and low-pressure hoses to the corresponding high and low-pressure ports of the compressor, and connect the middle hose to the vacuum pump; 2. Open the high and low-pressure manual valves and start the vacuum pump; 3. Close the high and low-pressure manual valves and observe whether the pressure gauge readings increase; 4. Close the high and low-pressure manual valves and turn off the vacuum pump. The car air conditioning refers to the air conditioning device installed in the car, and its functions are: 1. To cool, heat, ventilate, and purify the air inside the cabin; 2. To provide a comfortable environment for passengers, reduce driver fatigue, and improve driving safety.
I've seen a lot about car air conditioning repairs, and vacuuming is quite crucial. First, you need to prepare a set of pressure gauges and a vacuum pump, connect them to the vehicle's service ports, and remember to close all valves before starting the pump to extract air. Typically, it takes about 15 to 20 minutes until the pressure gauge stabilizes at a negative value. During the process, keep an eye out to prevent air and moisture from getting in, as this can cause ice blockage or corrode the pipes after adding refrigerant. I recommend checking for leaks after vacuuming: turn off the pump and observe if the pressure rises again—if it does, it indicates a leak, and you'll need to redo the vacuuming. Perform the entire process in a well-ventilated area and wear gloves for safety, as this job can be prone to accidents. It's advisable to consult a professional technician for peace of mind.
