A common failure in these supplies is the fan. It can be replaced, although it is a bit of a bear
to get at. It is a standard 12V fan that can be obtained from electronic suppliers. I've had to
replace them in two systems.
Cheers
-Kirk
Kirk Marat, Ph. D., NMR Facility Manager
Dept. of Chemistry
University of Manitoba
Winnipeg, MB, R3T 2N2, CANADA
ph. (204) 474-6259 FAX: (204) 474-7608
kirk_marat_at_umanitoba.ca
The older I grow the more I distrust the familiar
doctrine that age brings wisdom.
-H. L. Menken
ALL SPAM forwarded to Spam Cop
----- Original Message -----
From: "Hirschinger, Jerry D" <jerryh56_at_purdue.edu>
To: "AMMRL" <ammrl_at_ammrl.org>
Sent: Tuesday, May 10, 2011 1:50 PM
Subject: RE: AMMRL: power supplies for DRX AQX rack
For reference, in case any of you are having overheating of this AQX rack power supply, I have just
found and repaired such a problem. The supply kept overheating after several hours of use. Upon
removal and inspection, I found that the output terminals on the large supply were not torqued
tightly. The wires are very large, and the tight wire bends were keeping the nuts from being easily
tightened. I suspect this is a common problem in this rack, so the output terminal tightness is
worth checking if you have any problems in the AQX power supply.
Cheers, -Hirsch
Jerry Hirschinger, NMR Instrumentation Specialist
Purdue Interdepartmental NMR Facility
560 Oval Dr. West Lafayette, IN 47907-2084
Office: Wetherill 365A
Phone / Fax: (765) 494-5288 / 494-0239
Cellular: (765) 427-3034
-----Original Message-----
From: Robert Peterson [mailto:peterson_at_mbi.ucla.edu]
Sent: Tuesday, May 10, 2011 12:04 PM
To: AMMRL
Subject: AMMRL: power supplies for DRX AQX rack
Hi everybody,
It seems that Bruker is running low on power supplies for DRX AQX racks.
The last two times I've had to replace a "12 amp" power supply, Bruker has been (initially) unable
to locate one. In both cases, they had the entire "power sled" in stock (it has a 5 volt PS, a 12
amp PS, and the power supervisor board), but no 12 amp PS alone. Allen Wan told me that these power
supplies are no longer manufactured, and that they don't know of any others that match all the
specifications (size and shape as well as current and voltage, etc), and that even the eompany that
repairs these for Bruker is running out of parts. I'm getting worried that soon Bruker won't be able
to support DRX systems.
Has anyone else run into this problem? Does anyone know if there are other power supplies out there
somewhere that can be used in the AQX rack? The power supply in question is made by TDK-Lambda. On
the power supply is written:
Omega
MML 400
COUTANT LAMBDA
and it's part number E25372.
Thanks in advance.
-Robert
--
-----------------------------------------------
Robert Peterson, Ph.D.
Facility Manager - NMR Technology Center UCLA-DOE Institute for Genomics and Proteomics UCLA Dept.
of Chemistry and Biochemistry
phone: (310)825-1816
fax: (310)825-0982
peterson_at_mbi.ucla.edu
-----------------------------------------------
Received on Wed May 11 2011 - 12:12:55 MST