MAINTENANCE
EATON
Powerware
®
9170
+
UPS (3–18 kVA) User’s Guide
S
164201393 Rev C
www.powerware.com
96
Storage Temperature
Store the Powerware 9170
+
battery modules (in the UPS or external
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
+
UPS or battery cabinet without batteries may be stored at –40 to
+60
°
C (–40 to +140
°
F).
External Bypass Switch (Make-Before-Break Only) Operation
Press the red button beside the switch before turning the Powerware
MBB bypass switch. This button:
S
Sends an electrical signal to the UPS to switch to the internal Bypass
mode (if it is not already operating in that mode).
S
Operates a mechanical interlock, to prevent the switch from being
turned without first signaling the UPS.
NOTE
When the red button is released, the UPS remains in its internal Bypass mode.
Return the UPS to Auto mode by selecting that mode on the front panel display.
Battery Replacement
The Powerware 9170
+
hot-swappable feature lets you replace the
battery modules without disconnecting the load or damaging the
batteries.
NOTE
The Powerware 9170
+
UPS will operate with uncharged (or no) batteries, but will
have limited (or no) battery backup capability. Backup protection requires at least three
battery strings for every four power modules. The UPS may indicate an alarm with no
batteries present.
To replace battery modules in pairs:
1.
Remove the front covers from the battery modules to replace.
The covers have spring latches on the left and right sides that hold
them in place.
2.
Grasp the battery module handle and press down on the latch
release.
