Specific Steps for Evacuating Automotive Air Conditioning System
1 Answers
Below are the specific steps for evacuating an automotive air conditioning system: 1. Connect the high and low-pressure hoses to the compressor's high and low ports respectively, with the middle hose connected 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 reading has rebounded. 4. Turn off both the high/low-pressure manual valves and the vacuum pump. Important Notes: 1. Before servicing the AC system, it's essential to remove air and moisture to reduce water content in the system, facilitating fault diagnosis and repair. 2. Creating a vacuum inside the system lowers water's boiling point, allowing moisture to vaporize and be more easily extracted from the AC system.