Refrigerant Recovery Machines

[killermiller]

1.) How many of you use them?
2.) If it is an oil compressor do you need to change it to use it with refrigerants other then r12/r22? I am thinking about buying one but it is pretty old but want to make sure I can use it with r404/r507.

[Xeon th MG Pony]

Simple, it will say it works with it.

I made my own two unites to deal with R-12 & R-134a, I yet need to make one for dealing with R-22.

To buy one, just check the discription to ensure it will work with the refrigerant at hand, or make one that will work with the refrigerant at hand.

[killermiller]

Simple, it will say it works with it.

I made my own two unites to deal with R-12 & R-134a, I yet need to make one for dealing with R-22.

To buy one, just check the discription to ensure it will work with the refrigerant at hand, or make one that will work with the refrigerant at hand.

I don't have the spare part lying around yet so I figured it would be easier to buy a used unit.

The unit I am looking at is a James Kamm Model K-3335. The problem is that there is no website for it and when I search for K-3335 I mostly get Kohler Faucets.

This is the only information I have found for the unit.
James Kamm Model K-3335 Refrigerant Recovery Center, For R-12 and R-22 Refrigerant, 120 Low/221 High PSI Design Pressure, 110 Volt, Single Phase, =

[Xeon th MG Pony]

If it can handle R-22 it will struggle with R-507 it will work it just wont like it and it will be hard on the machine. You'll need a more modern unit to handle the higher pressur refrigerants such as R-507, R-502 and the like.

[killermiller]

Yeah, I was pretty skeptical about it. Thanks for the info. Does anyone else use recovery units? If you do which one do you use?

[best [486]]

i use this big red "refrigerant recovery center" thing, it was designed for r12, but it just has a piston-type hermetic compressor in it, also, on yours don't put poe oil in it, change it when you get it, but put refrigeration grade mineral oil in it, it is impervious to moisture

[killermiller]

Won't the mineral oil contaminate the recovered refrigerant?

[best [486]]

no, they have internal oil seperators, and the amount that gets by is acceptable, usually, and the reason i've heard for not using mineral oil is that the refrigerant doesnt carry it well

[killermiller]

I must gotten confused. I thought that it carried it too well.