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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xj-s] Re: Re: A/C convert to R134a
R12 turns to phosgene gas when it's in the presence of high heat(like a fire), or what my instructor in Air Force tech school termed, "Deadly" phosgene gas. They always emphasized the "Deadly" part. The EPA doesn't seem to support the allegations of the r406a people. While 406a is considered "acceptable" by the EPA, it contains 4% isobutane and 55% r-22. Barrier type hoses must be used in the presence of r-22. Since the guy that manufactures r406a is attempting to be in direct competition with r134a (so I read once), I (personally) would dismiss those caveats. I have absolutely no concerns with using 134a except that it doesn't cool as efficiently as r-12 in a conversion. As OEM, the cooling is fine because the condensers, etc are larger, and the system is "purpose built" for r134a. Harry ---------- From: John Bertsche[SMTP:103136.3056@compuserve.com] Subject: [xj-s] A/C convert to R134a (real long) Message text written by INTERNET:traff@ICON.HMSD.UFL.EDU > 4 cans of 134a freon, an < FWIW, I recently read that there have been a number of fatalities caused by R134a being introduced into the passenger compartment through leaky evaporators. I've never heard of this happening with R-12 or it's substitutes like r406a. More info can be found at www.autofrost.com jb
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