Evacuation of the Refrigerant System

1. When an A/C System has been opened to the atmosphere, such as during installation or repair, it must be evacuated using a vacuum pump. (If the system has been open for several days, the receiver/dryer should be replaced).
2. Connect an Air Conditioning Service Station as shown. Follow the equipment manufacturer's instructions.
- Connect the high-side adapter to the high pressure hose first, then connect the hoses to the car as shown. When testing is completed, disconnect the high-side adapter from the high-side fitting; do not disconnect the hose from the adapter, or refrigerant may escape from the system.
- If low pressure does not reach more than 700 mm Hg (27 in-Hg) in 15 minutes, there is probably a leak in the system. Partially charge the system and check for leaks.

CAUTION: Use only a R-12 refrigerant Air Conditioning Service Station.