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Evacuating system with vacuum pump

Bench on Fri June 25, 2010 7:48 PM User is offlineView users profile

Year: 2001
Make: toyota
Model: tundra
Engine Size: 4.7
Refrigerant Type: r134a
Country of Origin: United States

Could I take an old R134a tank, and weld a fitting on it, so I could hook a vacuum pump up to it, to evac my system?

CCWKen on Fri June 25, 2010 8:03 PM User is offlineView users profile

Whaaaaaaaaaaaaaaa?

You will need a vacuum pump, a gauge set and hoses. What's the purpose of the tank?

-------------------------
Ken Kopsky

Custom Car Works
"Rules are for the guidance of wise men and the obedience of fools."

Cussboy on Fri June 25, 2010 8:28 PM User is offline

I think original poster is inquiring how to RECOVER refrigerant from his system.

The short answer would be: yes. You'd need to cool the recovery tank, and pull a good vacuum, then attach to your system. As the refrigerant comes over into the tank, the cold temperature makes the refrigerant condense to a liquid, so there's still vacuum in the cold recovery contaner, and the process continues.

I've done similar using a metal cannister which holds about 3 pounds refrigerant.

Edited: Fri June 25, 2010 at 8:29 PM by Cussboy

Bench on Fri June 25, 2010 9:33 PM User is offlineView users profile

Cussboy, Yes that is what I am wanting to do. Don't want to release freon into the air, so I thought I could trap it in a tank. I would then take the tank to a reclamation center. I have a 5cfm vac pump, would that be enough? Should I use dry ice, or regular ice to chill the tank?

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