On Mar 26, 2011, at 11:20 AM, Clark Martin wrote:
The alarm means that the UPS has switched to battery power, or that
the battery is failing. if this isn't accompanied by a general
power failure, it's usually the battery alarm. Check the UPS manual.
You can also get an alarm on low mains voltage. Best answer is to
RTFM.
Low mains usually dims the lights, too, at least when it's enough to
trip the UPS alarm.
--
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group
Institutions do not have opinions, merely customs
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