a/c r134-r12

[Adrian Teo]

Excuse me for jumping into this thread. (evne though there is hardly
anything EFI related here).

At 09:55 7/4/98 -0400, mrvette wrote:
>the adding of r134 nto an r12 system should not, in and of itself cause any
>damage,  it just wont work very well,  unless it is run like that and the
r134
>will not pick up the ref. oil to oil the compresser...that is the only way it
>could happen to cause the compresser to self destruct internally....can't
>imagine anyone running the system that long...

>Oh well, wonder how that happened?  fellow doing the work used a set of
homemade
>adapters?  otherwise the fittings on hoses wouldn't fit....

Well, my guess is that the AC receiver/drier was not changed and the system
wasn't flushed clean of R12 and R12 compressor oil before the R134a was put
into the system. This is the simplest scenario where the A/C system gets
daaged. I believe that the R12 compressor oil reacts with R134 creating a
goop like substance, hence the damage.

>changeovers are easy to do BTW...GENE

Agreed, but it has to be done correctly and as you already entioned, it
doesn't work as well.

-AT
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Adrian Teo                              
System Administrator, Instruction Support, ASU
Arizona State University, Computer Science & Engineering
http://www.singnet.com.sg/~adriant      adrian.teo at asu.edu
http://falcon.asu.edu/hybrid            falconer at falcon.asu.edu
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