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Re: [GMCnet] yet another dash AC question [message #274437 is a reply to message #274435]

Fri, 27 March 2015 15:27

emerystora

Messages: 4442
Registered: January 2004

Karma:

Senior Member

Did you totally evacuate the system prior to installing the refrigerant? What vacuum level did you reach?

I have never seen a system that needs over 3 cans. 5 cans will not cool it properly. The less you use, the colder it gets. However if you are much less than 3 cans your evaporator will get so cold that the condensate will freeze it up so that air will not flow through it.

You have something else wrong. Did you replace the filter/drier? You should have if you replaced the compressor.
You might also have a bad expansion valve.

Emery Stora
77 Kingsley
Frederick, CO

> On Mar 27, 2015, at 1:43 PM, KB wrote:
>
> I'm having trouble charging the dash AC system with Enviro-Safe (duracool equivalent).
> Last time, before the hoses got destroyed by the new compressor, I took the consensus advice
> and just charged with three 6 ounce cans. It worked more or less, but the compressor cycled off
> a lot (which I took to be low refrigerant) and the pressure seemed low.
>
> This time, after replacing the damaged hoses and vacuuming the system to check for leaks, I put in three cans again
> and the pressure is still low, something under 10psi at 1500 rpm, so I added more. After two more cans (total of 5),
> the pressure at 1500 rpm is about 13psi, and at idle about 28psi.Doesn't seem to be cooling particularly well, though
> there is at least condensation on the line at the back of the compressor.
>
> So, is three cans always the case, or do systems vary? Other than the new aluminum compressor, ours is all stock
> as far as I know -- no add on evaporators or anything.
>
> I don't know now if it's under or over charged, but am hesitant to just keep adding more refrigerant.
>
> thanks,
> Karen
> 1975 26'
>
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[Message index]

		yet another dash AC question By: KB on Fri, 27 March 2015 14:43
		Re: [GMCnet] yet another dash AC question By: emerystora on Fri, 27 March 2015 15:27
		Re: [GMCnet] yet another dash AC question By: biggreen on Fri, 27 March 2015 15:45
		Re: [GMCnet] yet another dash AC question By: KB on Fri, 27 March 2015 15:58
		Re: [GMCnet] yet another dash AC question By: Bullitthead on Fri, 27 March 2015 16:36
		Re: [GMCnet] yet another dash AC question By: KB on Fri, 27 March 2015 16:52
		Re: [GMCnet] yet another dash AC question By: roy1 on Sat, 28 March 2015 00:55
		Re: [GMCnet] yet another dash AC question By: KB on Sat, 28 March 2015 10:36
		Re: yet another dash AC question By: Chris Tyler on Fri, 27 March 2015 19:03
		Re: [GMCnet] yet another dash AC question By: powwerjon on Fri, 27 March 2015 23:02
		Re: [GMCnet] yet another dash AC question By: KB on Sat, 28 March 2015 10:21
		Re: [GMCnet] yet another dash AC question By: emerystora on Sat, 28 March 2015 10:34
		Re: [GMCnet] yet another dash AC question By: Matt Colie on Sat, 28 March 2015 17:45
		Re: [GMCnet] yet another dash AC question By: KB on Sat, 28 March 2015 21:39
		Re: [GMCnet] yet another dash AC question By: roy1 on Sun, 29 March 2015 00:25
		Re: [GMCnet] yet another dash AC question By: KB on Sun, 29 March 2015 11:25
		Re: [GMCnet] yet another dash AC question By: powwerjon on Sun, 29 March 2015 13:20
		Re: [GMCnet] yet another dash AC question By: emerystora on Sun, 29 March 2015 13:50
		Re: [GMCnet] yet another dash AC question By: powwerjon on Sun, 29 March 2015 14:04
		Re: [GMCnet] yet another dash AC question By: emerystora on Sun, 29 March 2015 14:13
		Re: [GMCnet] yet another dash AC question By: USAussie on Sun, 29 March 2015 15:06
		Re: [GMCnet] yet another dash AC question By: roy1 on Sun, 29 March 2015 14:34
		Re: [GMCnet] yet another dash AC question By: Kingsley Coach on Sun, 29 March 2015 07:04
		Re: [GMCnet] yet another dash AC question By: KB on Thu, 13 August 2015 14:45
		Re: [GMCnet] yet another dash AC question By: ljdavick on Thu, 13 August 2015 14:51
		Re: [GMCnet] yet another dash AC question By: bdub on Thu, 13 August 2015 15:07
		Re: [GMCnet] yet another dash AC question By: KB on Thu, 13 August 2015 18:20
		Re: yet another dash AC question By: JohnL455 on Sun, 29 March 2015 18:22
		Re: yet another dash AC question By: Keith V on Sun, 29 March 2015 20:42
		Re: yet another dash AC question By: KB on Mon, 30 March 2015 17:55
		Re: yet another dash AC question By: Adrien G. on Mon, 30 March 2015 22:25
		Re: yet another dash AC question By: KB on Tue, 31 March 2015 12:22
		Re: yet another dash AC question By: Adrien G. on Tue, 31 March 2015 22:30
		Re: yet another dash AC question By: KB on Wed, 01 April 2015 12:31
		Re: yet another dash AC question By: KB on Mon, 30 March 2015 17:44
		Re: yet another dash AC question By: KB on Wed, 01 April 2015 12:37
		Re: yet another dash AC question By: JohnL455 on Mon, 30 March 2015 07:47
		Re: yet another dash AC question By: KB on Mon, 30 March 2015 17:51
		Re: yet another dash AC question By: JohnL455 on Wed, 01 April 2015 09:36
		Re: yet another dash AC question By: KB on Wed, 01 April 2015 12:45
		Re: [GMCnet] yet another dash AC question By: ljdavick on Wed, 01 April 2015 18:18
		Re: yet another dash AC question By: Bob de Kruyff on Wed, 01 April 2015 23:13
		Re: yet another dash AC question By: JohnL455 on Fri, 03 April 2015 08:46
		Re: yet another dash AC question By: Bob de Kruyff on Fri, 03 April 2015 16:08
		Re: yet another dash AC question By: jhbridges on Thu, 13 August 2015 15:59
		Re: yet another dash AC question By: JohnL455 on Thu, 13 August 2015 19:12

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