[AT] Question

[Steve W.]

This is on a motor home correct? Those can be a real pain because of the
way they run the plumbing. I would also think that it would hold more
134A than 36 ounces. As a test turn the AC on HIGH, and MAX AC Let it
run a bit, how fast does the clutch cycle now? Does this unit also have
the rear AC system connected in to the front using the same compressor?
On those the rear control valve can stay shut while charging and it will
cause the same symptoms you are seeing. Being this is a conversion the
drier could also be the problem since the desiccant used with R12 is not
134A compliant.

I would probably start by discharging the system. Then pull all the
fittings apart and replace all the O-rings with new 134A compatible
ones. Replace the drier with a new one, replace the orifice
tube/Expansion valve, flush the system, put in the correct amount of
oil, recharge using a gauge set and see what you get.


Steve Williams



----- Original Message ----- 
From: "Richard Fink Sr" <nancydick at keyconn.net>
To: "Antique tractor email discussion group"
<at at lists.antique-tractor.com>
Sent: Sunday, May 23, 2004 8:02 PM
Subject: Re: [AT] Question


> Ivan and BO thanks for the reply. after i vacuumed the system i put in
3
> cans what the directions called for. The line on the low side would
frost
> up as i put each can in. I tryed it again today and the air coming out
is
> just cool this unit i purchased to refill it had a gage built in and
it is
> showing it to be in the safe area. the compressor kicks in and out
when i
> turn the air on or off.Probley will need to find some one that knows a
lot
> more than me.??????????????????????
> R Fink
> PA
>
>
>
>
> At 11:11 AM 5/23/2004 -0500, you wrote:
> >Richard, before Reassembling any hose connections , I Always put a
little
> >refergrant oil on the O-Rings and hose fittings . Do not overtighten
them,
> >pull a vacumn to BOIL out the moisture in system, then charge unit .
IF you
> >have a LOW PRESSURE switch on the dryer, you will need to JUMP it in
order
> >for the compressor to run and to be able to charge the system .
> >The LOW PRESSURE Switch keeps from burning up the compressor when
your
> >system gets low on freon .
> >Hope this helps you out .
> >
> >Bo Hinch
> >
> >Original Message -----
> >From: "Richard Fink Sr" <nancydick at keyconn.net>
> >To: "Antique tractor email discussion group"
<at at lists.antique-tractor.com>
> >Sent: Sunday, May 23, 2004 12:00 PM
> >Subject: [AT] Question
> >
> >
> >
> >
> >
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>
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