How To Vacuum Car Ac System With Pump

Hooking up the manifold gauge to vacuum ac system.

How to vacuum car ac system with pump.

To use a vacuum pump on an air conditioner first turn the pump on and open the side gauge valve which will allow the vacuum to start pulling air out of your system. Proper way to pull a vacuum from a discharged auto ac system. Pumps can be purchased or rented if you don t want to make a permanent investment. A vacuum of about 500 microns or 29 92 hg gauge pressure is needed for removing any moisture that may have entered the system along with the non condensable gases while it was open.

One thing straight remember to keep the valves on the closed position before connecting to ac system. With a vacuum pump connected to both low and high air conditioning system sides pull a deep vacuum for at least 5 45 minutes. Next you need to connect the red colored valve to the high pressure port and the blue colored valve to the lower one. It is the yellow valve that signifies the connection to the vacuum pump.

Once the valve is open let your vacuum run at full speed for 15 to 30 minutes to pull out as much air as it can. Creating a vacuum deep enough to boil moisture away by using a vacuum pump on a regular basis is an effective low cost method of maintaining a healthy ac system.