Vintage Air question

[Gene]

I know absolutely nothing about how an ac system works so bear with me please. I recently had my vintage air gen iv charged by a professional, and it was vacuumed for an hour and held meaning the system should have no leaks. Ok, drove the truck home and air worked well, but truck ran pretty warm so the compressor was constantly cycling so I turned it off until I got home. Came to realize that my fan clutch was shot and my fan was not far enough into shroud to be effective. So I installed an electric fan which really pulls the air. Ok here's the problem, I havent tried the ac since I upgraded to electric fan and when I did I noticed the clutch wasnt engaging at all. I have power to binary switch from the main unit but no power output to the clutch? Does this mean that I may have damaged the switch because of high pressure? Or might I have caused a leak by running it for a short period of time with high head pressures?

[Wrenchbender Ret]

Neither should have damaged anything. I think you have a leak in the system. If you have a low pressure switch easily assessable you could bypass it & see if the comp. kicks in.

[stexag]

Also Gene you may want to call VA and see how they want you to wire your system, I feel pretty sure they will at least want you to switch from a binary switch to a trinary switch. That will let your a/c control the fans too. My apologies if this is old news.

[SS Tim]

Agree it may have a leak. Seen a number of systems hold a negative vacuum be start bleeding under pressure. Typically it is a hose or connection. Jumping a pressure switch to momentarily engage the compressor is a standard service shortcut.

[Gene]

Ok, I bypassed the switch and compresor ran but ac is not cold at all. Must have leaked out most of my freon.
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[screaminchevypickup]

Were the lines crimped with a hydraulic crimper or a/c?
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[Gene]

Originally Posted by screaminchevypickup

Were the lines crimped with a hydraulic crimper or a/c?
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I had a local shop crimp them correctly. They look just like the vintage air hose ends. Only place I can think of yhat may be leaking is at t he drier. My guy noticed I had it i nstalled backwards so I turned it around without replacing the o rings like vintage air recommends.
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