How to Properly Pull Vacuum on Your AC Condenser: A Step-by-Step Guide
To pull a vacuum on an AC condenser, first connect the vacuum hose to the center port on the vacuum pump and then attach the adapter to the hose. Connect the other end of the adapter to the valve at the low side of the AC system. Turn on the vacuum pump and open the valve on the adapter to begin pulling a vacuum on the system. Allow the vacuum to pull for at least thirty minutes or until the pressure gauge on the pump reads that a full vacuum has been achieved. Then turn off the vacuum pump and close the valve on the adapter before disconnecting the hoses.