AC Problems - Low Pressure 93 90q w/ 134A

[Dave Glubrecht]

It is most common to charge from the LOW side here in WA state.
There are several advantages to high side charging (mostly speed) but I do
not even know anyone who charges through the high side.
When charging through the low side you must make sure you are charging as a
vapor which means that your source will require heat input.  It takes longer
to put the proper volume in as a vapor than as a liquid.  The system must
also be running to change it back to a liquid in order to store the proper
amount in the system.
As you state, liquid will not compress and care must be taken to ensure that
only vapor is introduced to the system to prevent system damage.
  Dave G    (WA state freon cert.)

----- Original Message -----
From: Avi Meron <avim at pacbell.net>
To: Andrew Lundy <fast928 at prodigy.net>
Cc: Quattro <quattro at audifans.com>
Sent: Thursday, August 09, 2001 1:04 PM
Subject: RE: AC Problems - Low Pressure 93 90q w/ 134A


> Actually Andrew, in AC circles..............you are supposed to charge
from
> the high side NOT the low side!
> BUT you CAN NOT have the car running!
>
> The ACR 4 or others (AC charging machines) have a small compressor that
> force-feeds the refrigerant to the AC system!
>
> Reason is (I thought you will never ask!) is to PREVENT liquid charging to
> the compressor (the refrigerant is in liquid form in the tank), the
> compressor will not compress liquid "too well".
>
> Take care, now,
> Avi
>
>
> -----Original Message-----
> From: quattro-admin at audifans.com [mailto:quattro-admin at audifans.com]On
> Behalf Of Andrew Lundy
> Sent: Tuesday, August 07, 2001 10:30 AM
> To: Robert Bauer; Quattro List
> Subject: Re: AC Problems - Low Pressure 93 90q w/ 134A
>
> <SNIP> How does one recharge a system with only a high pressure port?
>
> With the use of a special machine designed for this purpose!!
> ---
> Andrew Lundy
> fast928 at prodigy.net
> 90 80q
> 95 90q
>
>