Originally posted by F111D F:
I've got to ask, I bet you could tell us how to do it with a set of gauges?
I read and over heard HVAC guys talking that 134A does as much harm to the ozone as R-12 only differently??? IE hey I've got gotta couple 100lb's of 12 how much$$$$
TNX
Paul



Ah.....

To do this with Gauges requires a bit more precision.
You need to know what your current weather characteristics are...
Temperature & Humidity

Then you need to refer to a chart, which is in the FORD Service Manual.
It tells you what the HI and LOW pressure ranges should be for an AC system
that is in working order, by temperature and humidity levels.
Most shops do it this way, but their gauge cluster is attached to a 30lb bottle of R134a.

And R134a doesn't attach itself to the Ozone like R-12 does.
R134a is an inert gas called Halogen.
It has properties very similiar to Carbon Dioxide.
That is why you see it also used in many Fire Extinguishing devices.
Halogen is an element found naturally on earth.
Halogen, in a gaseous state, can be used just like R-12, but it works at a slightly higher pressure.
Halogen is also a smaller molecule than R-12, so the hoses and plumbling used for this type of system,
are more expensive than the R-12 system, because they cannot be as porous as the R-12 plumbing
or else they would not be able to contain the Halogen gas.
Just like any balloon, other than a Latex Balloon, can't hold Helium for more than 24 hours.

R-12 is a CHLOROFLUOROCARBON. A molecule made of of several elements.
It is very reactive to the Ozone, and because of this,
has been outlawed for release into the atmosphere,
and our R-12 CFC Recycling program began, to reclaim this gas,
rather than dispense it into the atmosphere.
R-12 is no longer manufactured in North America,
and hasn't been manufactured in North America
for the more than 10 years now.

Pete... 2004 Mercury Marauder 300A Black Clearcoat/Dark Charcoal LEATHER DOB 10/31/2003 DOP 1/2/2004 www.mercurymarauder.net