MAINTENANCE
Storage Temperature
Store the Eaton 9170+ battery modules (in the UPS or external battery cabinet) at
External Bypass Switch (Make-Before-Break Only) Operation
Press the red button beside the switch before turning the Eaton MBB bypass switch. This button:
SSends an electrical signal to the UPS to switch to the internal Bypass mode (if it is not already operating in that mode).
SOperates 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.
See “Bypass Switch Operation” on page 23 for additional information.
Battery Replacement
The Eaton 9170+ hot‐swappable feature lets you replace the battery modules without disconnecting the load or damaging the batteries.
NOTE The Eaton 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.
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