INTRODUCTION
An uninterruptible power system (UPS) protects sensitive equipment against unacceptable
disturbances from the mains (AC line) supply. The UNITY/I™ Three-Phase UPS has the capacity
to serve a wide variety of electrical equipment — from mainframe computers to enterprise-wide EDP
installations to production lines. The UNITY/I Three-Phase UPS provides true on-line, single-
conversion technology and harmonics isolation.
This user manual explains how to use these models: UT310, UT315, UT320, UT330, UT340,
UT360, UT380, UT3100, UT3120, UT3160, and UT3220.
001 Storing the UNITY/I and Batteries
You can store the UNITY/I between 4 and 104 F ( 20 and 40 C). However, BEST recommends
that you store the unit and batteries between 59 and 77 F (15 and 25 C). Recharge stored batteries
every 90 to 120 days.
002 If You Have a Question
Best Power is committed to outstanding customer service. Our Worldwide Service center is happy
to help you with any problems or answer any questions you may have. A service technician is
available 24 hours a day, 365 days a year. Just call the telephone number below or your nearest
BEST office. (See the addresses at the beginning of this manual; you can also send a fax to the BEST
office nearest you.) Please have your unit's model and serial number available when you call. You
can find both numbers inside the unit's front door on the ID label.
Worldwide Service:
Sales Fax on Demand:
World Wide Web Site:
1-800-356-5737 (U.S.A. and Canada) or 1-608-565-2100
1-800-487-6813 (U.S.A. and Canada)
http://www.bestpower.com
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