Re: [TCML] Re: Tar

[Sfxneon@xxxxxxx]

If the transformer can did happen to collapse, it would fill the whole  
pumping system with oil, a VERY bad thing! If you want to use a vacuum pump,  maybe 
a refrigeration vacuum pump could be rented for a day or two.
 
Tony
 
 
In a message dated 1/22/2009 12:45:29 P.M. Central Standard Time,  
Russell.L.Thornton@xxxxxxxx writes:

Good  point Tony.  I wan't thinking of the contamination aspect.  
Russell


Message: 6
Date: Thu, 22 Jan 2009 09:27:19  EST
From: Sfxneon@xxxxxxx
Subject: Re: [TCML] Re: Tar
To:  tesla@xxxxxxxxxx
Message-ID:  <cac.489f12ab.36a9dc47@xxxxxxx>
Content-Type: text/plain;  charset="US-ASCII"

Bob,

If you pull a vacuum in the transformer  can, be sure it is strong enough 
to 
withstand the difference in  pressure. Atmospheric pressure will crush even 
a 
round steel 55 gallon  drum if a vacuum is created inside. There is a  ton 
(literally) of  pressure on each square foot with only 14 PSI pressure 
difference, 
so  be careful you don't implode the transformer can.

I also seriously  doubt that any sign shop would try to evacuate a 
transformer can with  their pumping system. That's not what it was designed 
to  do. I  
wouldn't want to risk contamination of my pumping system with oil vapor or  
the 
possibility of sucking oil into the manifold.  
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