[DML] Re: AC clutch running continuously
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[DML] Re: AC clutch running continuously



I have to disagree with your suggestion not to use 134a.
If the system is okay and holds its pressure 134a is no problem.
Yes, the connections and lines are not developed for 134a, but when 
these are checked/perhaps replaced when needed and with the proper 
type of filling (after vacuming) it will provide you with a reliable 
cooling system.
Furthermore - and I am not an environmentalist - it's better for the 
environment (less poisonously) than R12. Besides that: R12 is 
outlawed!

Welmoed.


--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@...> 
wrote:
>
> YOu spent a lot of money with John so he should be helpful with your
> problem. Something is very wrong if the compressor will run
> continuosly on 12 oz. The low pressure switch should be shutting the
> system down. Is the low pressure switch jumped out? You do need to 
do
> that to charge the system but then remove the jumper after setting 
the
> initial charge. On 12 oz the system should go below atmospheric even
> with -134. I suggest you do NOT use -134. Either find some -12 or 
one
> of the substitutes like -414b. You should also have drained and
> refilled the A/C compressor with fresh oil and replaced the service
> valve cores. You cannot properly pressure test an A/C system with
> vacuum. You should pressurize to at least 100 psi with an inert 
charge
> and then test for leaks.
> David Teitelbaum
> vin 10757


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