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A/C back together - how to recharge and monitor? 200 1985

posted by  Ken of CT on  Tue Jul 6 08:28 CST 2004
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last visit: Thu Feb 19 17:54 CST 2009
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After doing the Volvo R-12 to R-134a retrofit (new evaporator, expansion valve, drier, high side hose, and O-rings) and a compressor replacement (DKS-15BH with R-12 fittings, but with oil and O-rings for R-134a), I think I'm ready to have the system evacuated and charged.

The "new" compressor (a Zexel) has R-12 service ports on the back, apparently functional. Can I recharge from here? Only port other than on the compressor is the high side one by the new drier (on high side on '85 200 series expansion valve system), on the T-fitting supplied with the Volvo kit. I assume I can monitor high side pressure at this point. Tips on what to buy for this purpose?

Does all this sound right?

Further -- I've heard and seen reference to starting the charge with the engine off (I guess to get initial pressure high enough to start compressor). Does this make sense?

If all this is seriously off-base, please set me straight.






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New A/C back together - how to recharge and monitor? [200][1985]
posted by  Ken of CT  on Tue Jul 6 08:28 CST 2004 >


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