How to collect Buddha for 24v automobile air conditioning compressor

1, connect the pressure gauge to the thick pipe. 2. Close the valve on the thin tube with a hexagon wrench. 3. Close the valve on the thick pipe first, and then return once or twice. 4. Start the refrigeration operation and observe the pressure gauge. When the pressure reaches 0, close the thick pipe valve and turn off the power supply at the same time. 5. Remove the connector and wrap the nozzle with adhesive tape.