Powerware 9390 UPS 100160 kVA - Manual (Page 113)

UPS OPERATING INSTRUCTIONS
EATON Powerware ® 9390 UPS (20–80 kVA) Installation and Operation Manual S 164201603 Rev 2 www.powerware.com 9-5
9.1.9 Using the UPS LOAD OFF Pushbutton
A UPS Load Off is initiated by the LOAD OFF pushbutton from the main menu bar or
the System Controls menu bar. This pushbutton can be pressed to control the UPS
output. The UPS LOAD OFF pushbutton de‐energizes the critical load and powers down
the UPS.
The UPS (including Bypass) remains off until restarted.
To use the LOAD OFF pushbutton:
1. Press the LOAD OFF pushbutton.
The Load Off screen appears, providing a choice to proceed or abort the
shutdown.
C A U T I O N
All power to the critical load is lost when the LOAD OFF is selected in the following step. You should use
this feature only when you want to de‐energize the critical load.
2. To shut down the UPS, press LOAD OFF from the Load Off menu bar, and hold for
three seconds. To abort the shutdown, press CANCEL.
When LOAD OFF is selected and held for three seconds, the input, output, and
bypass backfeed contactors open, the battery breaker or disconnect is tripped,
and the power module is turned off.
C A U T I O N
DO NOT attempt to restart the system after Load Off until the cause of the shutdown has been identified and
cleared.
3. To restart the UPS after pressing the LOAD OFF pushbutton, follow the procedure
in paragraph 9.1.1 or 9.1.2.