Storage Temperature; External Bypass Switch (Make-Before-Break Only) Operation - Powerware 9170 User Manual

Maintenance
For more information on preventive maintenance checks, contact your
service representative.

Storage Temperature

Store the Powerware 9170
battery cabinet) at –20 to +40 ° C (–4 to +104 ° F). Batteries will have a
longer shelf life if they are kept below +25 ° C (+77 ° F). The Powerware
9170
+60 ° C (–40 to +140 ° F).

External Bypass Switch (Make-Before-Break Only) Operation

You must press the red button beside the switch before turning the
Powerware MBB bypass switch. This button serves two purposes. It sends
an electrical signal to the UPS to switch to the internal Bypass mode (if it
is not already operating in that mode). The button also operates a
mechanical interlock, to prevent the switch from being turned without
first signaling the UPS.
NOTE
Bypass mode and must be manually returned to the Auto mode by
selecting that mode on the front panel display.
92
+
battery modules (in the UPS or external
+
UPS or battery cabinet without batteries may be stored at –40 to
When the red button is released, the UPS remains in its internal
Powerware 9170
®
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UPS User's Guide Rev B www.powerware.com
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