Dear Colleagues, During more than three years of operation, I have recorded considerable difference in filament lifetimes on my Micromax007: roughly in the range 500-2000hrs. Some of this may be accounted for by poor manufacture and Rigaku have, in the past, noticed this problem and replaced some filaments. For the last three filaments fitted, two have lasted about 500hrs and the third about 2000hrs. These filaments were replacements. My generator running protocol has been constant throughout. Interestingly, the filaments show no visible sign of wear or damage (even the 2000hr one) and are only changed when the generator starts to shut down on OL or FC limits. I recall earlier Rigaku generators that would give 2000hrs when well maintained and they ran at 5.4KW compared to the 800W of the Micromax. I would be grateful for any comments or suggestions from other Micromax operators.
Sincerely, Pat Bryant Dr Pat Bryant Senior Experimental Officer Macromolecular Crystallography Core Facility Faculty of Life Sciences Michael Smith Building The University of Manchester Oxford Road Manchester M13 9PT, UK Phone: +44-161-275-5090/5658 Fax: +44-161-275-1505 email: [EMAIL PROTECTED] Intranet:http://www.intranet.ls,manchester.ac.uk/facilities/research/xraycrystallography Internet:http://www.ls.manchester.ac.uk/research/facilities/xray
