How to Properly Vacuum Your AC System with a Pump: A Comprehensive Guide
To vacuum an AC system with a pump, start by connecting the pump to the low-pressure port on the AC system using a vacuum hose. Next, turn on the pump and let it run for at least 30 minutes to remove any moisture or air from the system. Once the system is fully evacuated, close the low-pressure port valve and turn off the pump. Finally, add the necessary amount of refrigerant to the system through the low-pressure port until the correct pressure is reached.