Jack,
A few months back I discovered a 1953 Imperial with factory AirTemp. The
system was quite impressive, and I wish I had the means to save the car and
experience that A/C.
The A/C system was well labled. A plate afixed to the evaporator box
mounted in the trunk stated clearly that the refrigerant was R-22. Working
charge was 5 pounds. High side test pressure was 300 pounds. Test pressure
low side was 300 pounds.
I thoroughly photographed the car, including the A/C parts. Point your
browser to: http://w3.one.net/~desoto/53imperial/index.html.
Great to read Ed Katzenberger's discovery of literature describing A/C
system for the '53 DeSoto, too! Wow, a '53 FireDome Sportsman with AirTemp
and wire wheels would be the ultimate.
Dave Duricy
DeSotoland.Com
It's the SMART DeStination!
At 10:15 PM 7/8/02 -0700, Jack Johnson wrote:
>I have been in the A/C trade for 34 years retiring about 2 years ago. Back
>in the early 70's I worked for a man who done automotive A/C and we repaired
>quite a few, but no 50's models. I don't remember ever hearing having R-22
>in any vehicles-just R-12. Head pressure wise, R-12 has a normal operating
>head pressure of 125 + while R-22 has about 225 + Lb head pressure. It would
>seem to me that the R-12 would have been used in all vehicles due to the
>excessive pressures, but as we all know anything probably can happen and may
>have happened. And I would nnot doube that it may have been tried at one
>time or another. All the ones I worked on were R-12. Are there any
>documents stating R-22 in an automotive air conditioner??
>Jack Johnson Shinglehouse, Pa
>
>
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