Date: Tue, 1 Jul 2003 22:26:14 -0700
Reply-To: wilden1@JUNO.COM
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Stan Wilder <wilden1@JUNO.COM>
Subject: Report on R12a - RedTec Refrigerant.
Content-Type: text/plain; charset=us-ascii
There isn't going to be a report from me on R12a Red Tec refrigerant.
I brought the system down to holding 15 inches of vacuum for two hours,
no leaks.
Installed one 6 oz can Red Tec, no cooling, no leaks.
Installed another 6 oz can Red Tec, no cooling, no leaks.
Installed another 6 oz can, no cooling no leaks, but very high head
pressure (dryer stopped up, throttle suction valve stuck ????)
The head pressure got to over 250 psi and the clutch started slipping
.............. I just opened the gauge set manifold valve and blew the
charge before it blew me.
The steel hose connection on the high side was so hot it burned my finger
when I touched it. Just enough to make my fingerprint shiny, no blister.
I'm not knocking the product I'm just a little ticked that I've blown
about $35.00 on nothing that I got to use.
After all said and done, clutch still slips without hardly any charge in
it and it'll probably need at least a dryer, 2 oz of oil and probably a
new clutch assembly.
From there I'll just recharge with R134 after a complete evacuation of
the system.
--------------------------
My loss your gain. I knew that I should have had less than 60 PSI head
pressure with one can, no more than 90 psi with two cans and no more than
120 psi with three cans.
I just wasn't sure what I was seeing after one can and 120 psi head
pressure so I continued and screwed myself in the process. (Red Tec is
supposed to operate at 25-40% less head pressure than R12 or R134)
Better luck to those of you that have some and want to use it. From all
that I heard, I have no doubt that it'll work.
As a general rule of thumb; You should always install a new dryer /
filter anytime the system has been open even for a few minutes or on any
old system that has been dormant for a long time. (mine is 27 years old,
if it had any moisture that is where you'd get rust, clogs, crud
collected before it went on to damage the system).
Once again I failed to follow my own advise and use all that I've learned
about A/C systems.
That's about it guys ................. If everything else fails read the
instructions and if reading the instructions fails, stand back and throw
two hundred dollars at it. That normally works!
Stan Wilder
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