Carr, Gary E. wrote:
>
> Eric,
>
> We are running a laserpure20 in conjunction with a 3DSystems SLA500.
>
> We recently had a leaking component which was a 2.5 GPM bypass. According to
> the system diagram, this should really be 2.0 GPM. We have not noticed any
> cooling problems associated with the wrong flow valve in the loop. Do you
> think we should replace it with the correct size (2.0 GPM) or default to
> what was actually installed (2.5 GPM)
>
> Gary Carr
>
> Northrop Grumman Corporation
> 1745 A West Nursery Road, MS W-99
> Linthicum, MD 21209
> (410) 765-8875 desk
> (410) 765-6339 lab
> (410) 993-7797 fax
> > -----Original Message-----
> > From: ERIC KING [SMTP:lzrdude@earthlink.net]
> > Sent: Monday, March 08, 1999 5:56 PM
> > To: rp-ml@bart.lpt.fi
> > Subject: SLA-500, heat exchangers
> >
> > Dear list,
> >
> > Please check your heat exchanger.
> >
> > It has come to our attention that there are several problems
> > concerning the Laser Pure heat exchangers on the SLA-500 machines:
> >
> > 1) The Coherent "Laser Pure 20" heat exchangers out in the field,
> > are not the correct model, and may cause severe damage to your
> > laser. They were not intended to be used with this model laser,
> > and we can supply detailed literature upon your request.
> >
> > 2) We have also seen "Laser Pure 40" models with the wrong
> > internal components. Which also may cause laser problems.
> >
> > To check for the correct component, remove the top lid,
> > and remove the side panel from the LP-40 unit.
> > (the side that has all the water fittings)
> > Locate the stainless steel heat transfer unit.
> > The unit should have the model # CB26-90H,
> > if it does not, please contact us.
> >
> > We have only seen these problems, on systems with dates prior to
> > 1992.
> >
> > If you have questions, or need more info, please contact us:
> >
> > Laser Innovations
> > (805) 529-5864 tel
> > 6621 fax
> > sla-500@laserinnovations.com
> >
> > Best regards,
> >
> > Eric King
> >
> > For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
Gary,
I apologize for my late reply, I've been out sick.
Yes, you should replace the bypass with the 2.5 GPM. That is one of
the upgrades / modifications to convert an LP-20 to a 40.
What is the model # on the heat exchanger, itself ?
Best regards,
Eric King
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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