[DML] Re: What is involved to convert R134a back to R12
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[DML] Re: What is involved to convert R134a back to R12



Going back to R-12 is fairly simple. Drain and refill the oil in the
compressor. Remove any fittings and labels that may have been added
from the conversion to -134, replace the service valve cores, pressure
test, vacuum, and charge with R-12. Of course this assumes the rest of
the system is in good shape. You may have to adjust the low pressure
switch to get the cycling right if it was messed with during the -134
conversion.
David Teitelbaum
vin 10757



--- In dmcnews@xxxxxxxxxxxxxxx, "sweetp01569" <paul.sweet@...> wrote:
>
> I have an appointment to have my AC system charged tomorrow.  The 
> previous owner did a $34 conversion from R12 to R134a, and am not sure 
> how much of the R12 oil he properly removed when he converted.  I read 
> on the posts that sticking with R12 is still better in the long run.  
> I replaced my evaporator, accumulator, low pressure switch and orifice 
> tube with the new variable orifice offered by SpecialT Auto.  What is 
> involved if I were to ask the AC shop to convert back to R12?  Is it 
> simply a matter of changing the service port back, draw a vacuum and 
> recharging with R12?
> 
> Thanks,
> 
> Paul
> vin 10944
>









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