Date:         Thu, 27 Jul 2006 10:54:07 -0400
Reply-To:     robert shawn feller <carboncow@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         robert shawn feller <carboncow@GMAIL.COM>
Subject:      Re: [Syncro] Re:[Q] What is the value for the std. required R12
              fill ?
Comments: To: rayvan5 <rayvan5@yahoo.com>
In-Reply-To:  <eaahtv+504i@eGroups.com>
Content-Type: text/plain; charset=UTF-8; format=flowed

again head pressures are a function of temperature...they vary as the
temperature does outside. if you look at the gauges of a good set you will
see it is marked for vent temps at different pressures. you have to give a
ambient temperature before you know 100% but 80lbs is a good estimate for
R12.

look at my website under AC as I posted a good chart for reviewing what your
pressures are telling you and what the problem should be. www.carboncow.com

when there is no sight glass and one cannot measure by weight i slowly add
refrigerant until you get a good temp at the vent, the low hoses are cold
and perspiring and the pressure "feels" about right. That is good as you can
get. If you hear knocking the pressure is to high!

www.carboncow.com

On 7/27/06, rayvan5 <rayvan5@yahoo.com> wrote:
>
>
> --- In Syncro@yahoogroups.com <Syncro%40yahoogroups.com>, "robert shawn
> feller" <carboncow@...>
>
> wrote:
> >
> > I'm not an expert>
> > Bob mentions that pressure is a function of ambient. The low side
> reading
> > for R12 according to my gauge set should be about 80LBS at 50degrees
> at the
> > vent. Right inline with what Bob stated.
> Anyone know for sure what the pressure should be?
>
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--
shawn feller

www.carboncow.net
www.carboncow.com