Re: Re delorean air conditioning question

["content22207" <brobertson@xxxx>]

Actually 100 psi is rest pressure of both high and low sides together.
When refrigerating low side drops to 30 or so and high side climbs
close to 200. Is a nice chart page N:09:01 with expected R12 readings
at various. R134 a bit higher.

Note common thread in responses to original post: whatever method is
used, be sure to vacuum all outside air from system before charging.
Freon evaporates well below freezing point of water (20 some odd
degrees). Any moisture trapped on low side will freeze and clog
system. Can sometimes even see bands of ice on low side hose (easier
to see on conventional front engine car). I personally use engine
vacuum (17 inches) for 15-20 minutes.

Bill Robertson
#5939

>--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> wrote:
>
> If any seals do fail during an evacuation they
> wouldn't have held up against the pressure which on the low side can
> go over 100 psi and on the high side over 150 psi.
> David Teitelbaum
> vin 10757
> 
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, john fredt <hecklerkochgmbh@xxxx> wrote:
> > 
> > I need some help with evacuating the air conditioning system.Does
> anyone know how many cfm to bring it down too? My pump can pull 5 cfm
> but im sure thats way more than necessary.Im not certified for air
> conditioning work so I dont know.Can to much vacuum damage the
> deloreans ac system? It seems to much would cause the seals to
> fail.Isnt that correct? 
> > 
> > 
> > 
> > thanks guys