Re: Compressor for 400 AVANCE...
jim breeyear (jbreeyea@zoo.uvm.edu)
Tue, 07 Aug 2001 13:04:34 -0400
Hi,
I have had problems for 20 years with air delivery to the department for
the IR,NMR, etc. The piston compressors seem to wear out frequently and
if the demand is high they cant keep up because the original
installation didnt have any reserve for future demands. A compressor
that runs all the time is probably going to have problems. Finally,
after much complainig, a turbine type compressor was installed. It is
much smaller and doesnt hammer like a older piston design. The belts
have to be changed periodically and the oil checked. So far it is able
to keep up with the demand. It is designed to run continuously and is
controlled by a small "computer". I do have filters, dryer and ballast
tank on the system. The tank does trap a small amount of water. The air
lines werent pitched properly to allow back flow of accululated water so
we have to live with that. There are some low spots in the over 200
feet of pipe.
I would buy a compressor that has some percentage in excess of the
present demands for future expansion. Goodluck.
Jim
Guillermo Moyna wrote:
>
> Dear spinlanders,
>
> I know that this question has been made to the group in the past, but
> here it goes again...
>
> We will be installing an AVANCE 400 in a couple of weeks. Since our
> facility has no house air, we need to get a 'rugged' air compressor
> that can go up to, according to Bruker, 120 psi (although we have
> none of the solids stuff, so 80 would be OK from my conversations
> with Bruker people). What I'm thinking of is a Gast (or equivalent)
> oil-less piston compressor and a ballast tank, plus a refrigerated
> air dryer (or equivalent).
>
> Anyone has any suggestions as of models, powers, accessories, etc.,
> etc? The contractor renovating the NMR lab will be installing it, and
> apparently they already have something planned, but I would like get
> something that won't die after the second week of operation...
>
> Thanks in advance,
>
> Guillermo
> +==================-------------- --- -- - - - -
> Guillermo Moyna, PhD
> Department of Chemistry & Biochemistry
> University of the Sciences in Philadelphia
> 600 South 43rd Street
> Philadelphia, PA 19104-4495
>
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>
> - - - - -- --- -----------=================+
--
Jim Breeyear
Univ of Vermont
email: jbreeyea@zoo.uvm.edu
Home Page: http://www.uvm.edu/~jbreeyea