Thanks to all who replied. I was a bit unclear. We don't have house
water cool the anode directly. A Haskris WW1 water/water exchanger
mediates that. Problem is that this overheats, presumably when the
house water supply is cut because of a pump failure in the building.
Things seem clean overall, but I'll have closer look at that and
consider adding filters. A pump to pull water through the chiller was
also mentioned by some. Lastly the building side itself. Maybe the
pump is programmed to switch off under low overall load. I'll look into
this.
I've emailed Haskris, but would anyone have a manual for the WW1 by chance?
Best.
Andreas
On 24/07/2014 10:32, Ed Hoeffner wrote:
Hi
Ours is cooled by a Haskris R250, which is sized for an XStream also. While
our heat exchangers have had a couple of issues, overall the Haskris heat
exchangers have performed quite well. They redesigned ours when they found
out about our building chilled water. I'm not affiliated with and heartily
recommend them.
As for the water itself, I would ***NEVER*** allow building chilled water
into the generator. Our water is extremely dirty and the supply is slightly
below spec, so we have a pump downstream of the heat exchanger. There are
also 2 filters upstream to pull some of the junk out. Lately, startup has
required the use of the pump, which I interpret as buildup in the condenser,
so that's eventually going to need a cleanout. That was what the redesign
was all about.
I imagine ours is an extreme case, but the heat exchanger makes up for a
variety of ills. Rigaku also recommends a DI filter to keep conductivity low
in the water going into the generator, which improves anode lifetime.
Building chilled water will never be able to be as low as desired. Besides,
facilities people can change things and you'd never know until it's too
late...
Ed
-----Original Message-----
From: CCP4 bulletin board [mailto:[email protected]] On Behalf Of
Andreas Förster
Sent: Thursday, July 24, 2014 10:54 AM
To: [email protected]
Subject: [ccp4bb] rigaku micromax 007 cooling
Dear all,
I have a Rigaku MicroMax 007 HF X-ray generator that is cooled by chilled
water supplied rather unreliably through the building infrastructure. I was
wondering what alternatives exist.
Could other MicroMax 007 users share their experiences with alternative
cooling solutions with me?
Thank you.
Andreas
--
Andreas Förster
Crystallization and X-ray Facility Manager
Centre for Structural Biology
Imperial College London
