Eaton Electrical Powerware 9315 - Manual (Page 79)

11-1 EATON Powerware
®
9315 UPS (200–300 kVA) Operation Manual S 164201036 Rev F powerware.com
Chapter 11 Using the LOAD OFF Button
Load Off is initiated by the covered, red LOAD OFF button on the Monitor Panel. This
button is protected by a clear plastic shield to prevent accidental activation. In an
emergency, you can press this button to instantaneously open the input breaker and
interrupt UPS output. The UPS is cut off from utility power, and the critical load is
de-energized. All power to the critical load is lost. The UPS (including Bypass) remains
locked off until you reset the LOAD OFF button.
W A R N I N G
All power to the critical load is lost when you press this button. You should use this feature
only in an emergency or when you want to de-energize the critical load.
To restart the UPS after pressing the LOAD OFF button, follow the procedure “Resetting
the UPS System after Load Off” on page 11-2 before starting the UPS.
NOTE The Remote Emergency Load Off option functions the same way as the LOAD
OFF button on the Monitor Panel.
11.1 Using the LOAD OFF Button
1. Raise the clear plastic shield covering the red LOAD OFF button on the Monitor
Panel.
2. Press the LOAD OFF button.
The breaker and contactors open (you can hear them opening). The CB1 switch
trips, and the Load Off PUSH TO RESET button on the UPS Control Panel pops out.
The UPS system shuts down.
W A R N I N G
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is
opened.