Powerware 9170+ - Manual (Page 65)

Operation
61 Powerware ® 9170 User's Guide S LTM-1344 B Uncontrolled Copy
Removing Input Power
Always put the Powerware 9170 UPS into the Off mode before removing
input power. Powerware 9170 system batteries will discharge if the
input line voltage is disconnected or turned off without first turning off
the Powerware 9170 UPS.
If the input power source will be disconnected or turned off for more
than a day or two, you should put the UPS into Sleep mode. Do this by
turning the UPS off, removing AC input power, and then pressing the
On button and selecting Battery Protect (BP). Sleep mode allows the
UPS to remain unpowered for up to six months without having to
remove or recharge batteries.
Failure to properly power down the Powerware 9170 UPS could
permanently damage any installed batteries. Also, if batteries become
severely discharged, the UPS might not start immediately when input
power is restored.
Turning the UPS On
If the UPS has been turned off, press the ON button through the front
panel display to turn the UPS on again.
If the UPS has been manually set to operate in Bypass or Battery mode,
change the System mode menu selection (menu 2) to Auto to return to
normal Auto mode operation.
NOTE The UPS will not start operating if AC input voltage or frequency is beyond
acceptable limits or if the system mode selection is set to Battery. The UPS can not go
directly from Off to Battery.