homemade refrig vac pump for a/c evac

[rockyracoon]

anyone ever use an old compressor from a fridge to evac their a/c system,if so is there any tricks to wiring/plumbing.I have a venturi type vac pump but im not sure if my compressor can keep up,its only a 17 gal tank,I think it is 3.5 HP with a 150 psi max.

 

[HISSIN50]

JRichker has done exactly that (with the fridge cannibalization) - see his article on his site for more.

Good luck.

 

[rockyracoon]

will do,thanx much

 

[jrichker]

My current vacuum pump is a refrigerator hermetic unit (motor & compressor in one unit). It was a freebe from a local used appliance store. I bolted it down to a piece of plywood & soldered a 1/4" flare fitting on the suction line. It works great, pulls 29" of vacuum in about 10 minutes or less. I have used it several times and have had excellent results.