On Tue, 5 Aug 2003 20:43:46 -0500, "news.charter.net"
Well, for starters, if you haven't drawn the system to high vacuum, it
will be full of NCG (non-condensable gas, ie: air), and moisture.
A vacuum pump & manifold gage set are pretty much a necessity for what
you are trying to do here. You may be able to rent them locally. If
you aren't sure how to use them safely, stop now & read-up on the
subject or let a pro finish the job.
Unskilled use of the gage set while charging can cause refrigerant
containers to explode & other annoying results.
The compressor must be running to draw the refrigerant in. I often
put a dab of "White-Out" on the edge of the compressor clutch plate
(NOT the pulley) so I can see at a glance if it is engaging.
Putting the can of 134a in warm NOT HOT water will help speed up the
process. Keep the can upright so vapor, not liquid, goes in. This
takes longer, but avoids the chance of compressor damage from a slug
Find out your system capacity. Too much refrigerant can be more
trouble than too little.
Hand & eye protection are swell ideas when doing these jobs.
I'm assuming the system was evacuated. Pumping R134A into an air filled
system is not only dumb, it's
dangerous, air can oxygenate R134A causing an unstable mix. My guess is a
clogged orifice tube is preventing proper suction. Of great importance is,
what type oil
is system charged with ? Ester oil is used in conversions.
PAG oil in new systems. Don't mix the two !
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