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- Path: sparky!uunet!airgun!hmsp04.wg3.waii.com!miller
- From: miller@hmsp04.wg3.waii.com (Griff Miller X7114)
- Newsgroups: sci.environment
- Subject: Re: Concern For Ozone Depletion Clear, Knowledge of CFCs Mostly
- Message-ID: <1740@airgun.wg.waii.com>
- Date: 30 Dec 92 15:11:18 GMT
- References: <1992Dec28.191859.15570@en.ecn.purdue.edu> <1736@airgun.wg.waii.com> <1992Dec29.202248.21173@en.ecn.purdue.edu>
- Sender: news@airgun.wg.waii.com
- Organization: Western Geo. - Div of Western Atlas Intn'l Inc., Houston, TX
- Lines: 75
- Nntp-Posting-Host: hmsp04.wg3.waii.com
-
- In article <1992Dec29.202248.21173@en.ecn.purdue.edu> ghg@en.ecn.purdue.edu (George Goble) writes:
-
- >Yep, it is R-134a, or HFC-134a or tetrafluoroethane. Just the ones
- >shipping to Texas I think (this was last summer).
-
- Yeah, I remember something like 10% were slated to have R-134a systems.
-
- >The Lafayette
- >Indiana Ford dealer, wants $1000 for a 30lb cylinder of R-134a.
-
- That's ridiculous. Is there any reason why it should be so high? I mean,
- any good reason? Is R-134a that expensive to manufacture?
-
- >PAG oil is destroyed
- >by trace amounts of "chlorides", which includes Freon-12, and "sludges"
- >created in Freon-12 based systems. "Flush", which is probably R-11
- >or R-113 (used to clean up systems in repair), also attacks the PAG
- >oil.
-
- So forget ever retrofitting R-134a into an old R12 system.
-
- >1% flush remaining in a R-134a system usually results in compressor
- >failure in < 1 week due to oil breakdown. R-134a systems have no
- >"approved" flush I know of.. (why doesn't somebody try Isopentane?)..
-
- You're kidding (but I'm afraid you're not). You mean they are making
- AC systems that they haven't figured out a way to flush? Egad.
-
- Why do you think isopentane would work?
-
- >Now, you have a R-134a system, and you have a line/hose break and
- >dump the charge. Air gets in, 20 min later your PAG oil is water
- >logged and ruined... now what.. The oil is volatile, so pulling
- >a vacuum on it will probably just boil the oil instead of getting
- >the water out, there is no "approved" flush (I bet isopentane would
- >work), so you cannot flush out the old wet oil, so just put in some
- >more oil, and maybe a new drier (will be overcome by wet oil), and
- >charge 'er back up (for $300).. and go....
- >
- >Wonder how long that wet system will last..?? 2-3 months?
-
- If that long. Then you have a compressor grenade on you and now
- you've got REAL problems.
-
- If what you say about R-134a is true then I see a farce far greater
- than the first GM R4 compressors in the making.
-
- >Wonder how long ANY NEW (non retrofitted) R-134a A/C will last once
- >the local mechanics try to service it? As John DeArmond would say,
- >"Can't sticker shock happen twice [on the same car]"?
-
- I don't mean to be obtuse (again) but who is this DeArmond fellow?
-
- >I have heard several people in both the refrigerator and the Automotive
- >A/C industry, talk about rumors of manufacturers reducing warranties
- >on NEW R-134a equipment, they are scared of it.
-
- Oh, now there's a logical reaction. Gee, how about halting further
- production of R-134a systems until the problems can be worked out,
- instead of passing known junk on to the consumer? What a waste of
- everybody's time.
-
- >I have also heard reports from IVY Tech in INDY, that mechanics are
- >getting skin burns after working on R-134a systems. The PAFT
-
- To me, the cons of R-134a far outweigh the pros. It's ONLY advantage
- is that its ODF is 0. Why can't somebody use GHG12 or something similar
- in new cars? It's ODF is practically nil, yes?
- --
- Griff Miller > miller@monarch.wg3.waii.com < use this for email.
-
- *** My opinions are mine, not Western's. ***
-
- "The fear of the Lord is the beginning of knowledge, but
- fools despise wisdom and discipline." - Proverbs 1:7
-