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Date:         Wed, 30 May 2007 20:06:35 -0700
Reply-To:     John Bange <jbange@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         John Bange <jbange@GMAIL.COM>
Subject:      Re: Full Throttle AC Cutout?
In-Reply-To:  <267FB9AD-1CD2-4A79-823D-B7B4B6960A94@xochi.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed


On 5/29/07, Michael Diehr <md03@xochi.com> wrote:
>
> Is there any downside to rapid cycling of the AC compressor?  I
> believe that some AC systems do not like to be turned on & off
> rapidly, at least I'm pretty sure I've seen such warnings on home ac
> units...   "Wait at least 3 minutes before turning back on".       Or
> am I thinking of video projector bulbs? :-)




Yeah, I was curious about that too, but it appears that's not so much an
issue with car compressors.  Near as I can tell after 10 minutes internet
"research", the "wait X minutes before restarting" is to keep electric
compressors from starting up against excessive high-side pressure, stalling
out, and frying the motor. Since car compressors are belt driven off the
pulley, I reckon there's no windings to burn...


--
John Bange
'90 Vanagon - "Geldsauger"
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