I hate to say it Keith, but you got some wrong too. The compressor takes
the low pressure gas from the evaporator and turns it into a high pressure gas.
The compressor cannot compress liquid any more than an engine can. The high
pressure gas “condenses” in the condenser and becomes the high pressure liquid.
When it hits the expansion valve, it goes to a low pressure, low temp liquid and
is evaporated into a low pressure gas by the air flow over the evaporator. It
then goes back to the compressor and the cycle starts all over. High side is
hot, and low side is cold. Any cold on the high side means a restriction.
Don, with an equally cold 66 Imperial.
Sent: Saturday, July 09, 2016 5:35 PM
To: Ray Jones
Subject: Re: [Chrysler300] Problem With Converting To
134A
Hate to say it Ray, but you got most of that A/C info backwards.
You might want to check out a tutorial like this one:
The compressor actually turns the gas into a pressurized hot liquid. The
liquid goes through the condenser coils up by the radiator where it partially
cools off. This is normally referred to as the "high side". Then it flows to the
expansion valve just before the evaporator coils. The high pressure of that
liquid is released at the expansion valve, turning it to a very cold gas there
and becoming the "low side". This makes the coils cold and they absorb heat from
the air passing through them. The low-side gas, which is still quite cold, then
returns from the evaporator to the compressor to be compressed in to liquid
state again.
One part you did get right is the critical importance of system evacuation
before charging with freon. Because low pressure cause liquids to turn to gas,
when you vacuum the system for several hours it causes the contaminating
liquids, including water and oils, to boil into a gaseous state and be drawn out
by the vacuum pump, and thereby cleansing the system before freon
charging.
And one final tip: If you can't or don't want to buy a new receiver/drier
(which is your A/C system's garbage can) it is possible to "rejuvenate" your old
one. Use an old toaster oven - which you probably keep around anyway to bake
paint on small parts. Take it out into the garage or outdoors and bake the
receiver/drier in it at 400 degrees for a couple of hours. It may stink to the
high heavens, but that process will boil out whatever garbage is in there - same
as turning on your self-cleaning oven. Give it a new coat of paint, bake it
again at 250 for 15 minutes, and it will look and perform like a brand new champ
again.
Keith Boonstra
Freezin' a can of beer in front of my '57 A/C On Sat, Jul 9, 2016 at 1:30 PM, Ray Jones 1970hurst@xxxxxxxxx [Chrysler300] <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:
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