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Mufasa02 08-16-2011 01:09 PM

fridge compressor
I want to convert a refrigerator compressor in to a semi power full air compressor is it possible? Also are there any safty precautions i should take during this project. If you have answers on how please respond.

mpoulton 08-16-2011 04:17 PM

It's possible, but probably not worth it unless you have a very special application. Refrigerator compressors have a very low flow rate compared to real air compressors, but are capable of fairly high pressure (300+ PSI). So if you have a need for a small amount of 300PSI air, go for it. Otherwise go buy a cheap air compressor, which will work better.

Mufasa02 08-16-2011 04:19 PM

Ok thank you I'll probably use the refridge compressor than

micromind 08-16-2011 09:47 PM

It will work, but not for very long. First, a hermetically sealed refrigeration compressor depends on cold refrigerant coming into the suction side for cooling the motor.

Second, some of the oils used in these units don't do well when exposed to oxygen or water vapor. They can become corrosive.

Mufasa02 08-16-2011 10:34 PM

Oh that may pose a problem.

mpoulton 08-17-2011 01:33 AM


Originally Posted by Mufasa02 (Post 708994)
Oh that may pose a problem.

Yeah, reports vary on how long they last. Some say "not very long", others say "plenty long enough". Many people use them as vacuum pumps, too. Either way, you'll need to feed a little bit of oil into the inlet occasionally during operation, because they rely on oil in the refrigerant system to keep the pump lubricated.

COLDIRON 08-17-2011 07:52 AM

It's nothing but trouble just buy one because it won't last long due to the oil problem and freon return for cooling it down. And it's dangerous.

joed 08-17-2011 08:05 AM

I used one for a long time as a compressor to pump up an air tank. It didn't have a lot of use just the occaisional bike tire or small spray job.

michaelcherr 08-17-2011 08:16 AM

I bought a pancake compressor at Harbor Freight for $30.
I've heard of them used sucsessfully for vacuum setups, but if you are pumping up a car tire ocassionally, I'd buy a cheap one: My time is worth something.

Mufasa02 08-17-2011 04:27 PM

Thank you guys for the advice

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