Best Compressor For R12 In Diesel Pusher

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philipswanson
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Best Compressor For R12 In Diesel Pusher

Postby philipswanson » Fri Jan 04, 2019 9:39 am

I have a 95 Wanderlodge that I am setting up for R12 from scratch. I am looking for a modern day compressor recommendation that will hold up well under stress with R12 and ester oil.
Dougflas
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Joined: Mon Apr 18, 2016 6:10 pm

Re: Best Compressor For R12 In Diesel Pusher

Postby Dougflas » Sat Jan 05, 2019 1:54 pm

Sanden SD 507
philipswanson
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Re: Best Compressor For R12 In Diesel Pusher

Postby philipswanson » Sat Jan 12, 2019 8:50 am

Most 507s are set up for R134. Will one of these work if I just swap out the oil or are there other differences?
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Cusser
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Re: Best Compressor For R12 In Diesel Pusher

Postby Cusser » Sun Jan 13, 2019 7:45 am

philipswanson wrote:Most 507s are set up for R134. Will one of these work if I just swap out the oil or are there other differences?


The replacement Sanden in my 1988 Mazda truck came with PAG oil in it, I needed R-12 mineral type oil. So I drained out the PAG oil, added about 4 oz. R-12 mineral type oil, turned the compressor at least 10 revolutions, then drained out the R-12 mineral type oil. Then I repeated the R-12 mineral type oil flush and drain.

Then I added the correct amount of R-12 mineral type oil and completed my install.
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bohica2xo
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Re: Best Compressor For R12 In Diesel Pusher

Postby bohica2xo » Mon Jan 14, 2019 5:30 pm

Why would you "start from scratch" with R12?

Properly sized components work great with 134a. The cost of the components for a system is really no different for either refrigerant. The cost of R12 vs 134a is significant however.
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Cusser
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Re: Best Compressor For R12 In Diesel Pusher

Postby Cusser » Tue Jan 15, 2019 6:34 am

Good question bohica, as a 1995 would've been factory R134a, I didn't catch that.

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