Eaton Electrical Powerware 9315 operation manual Using the LOAD OFF Button, Chapter, W A R N I N G

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.

11.1Using 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.

EATON Powerware® 9315 UPS (200–300 kVA) Operation Manual S 164201036 Rev F powerware.com 11-1