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Powerware 9315 (200 kVA---300kVA) Opera tion
164201036 Rev.D 041500
Using the LOAD OFF Pushbutton
Load Off is initiated by the covered, red LOAD O FF
pushbutton on the Monitor Panel. This pushbutton is protected by
a clear plastic shield to prevent accidental activation. In an emergency, you can
press this pushbutton to instantaneously open the input breaker and interrupt UPS
output. The UPS is cut off from utility power, and your 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 OF F pushbutton.
WARNING:
All power to the criticalload is lost when you press this pushbutton.You should
use this feature only in an emergency or when you want to de-energize the critical
load.
Torestart the UPS after pressing the LOA D OFF pushbutton, follow the procedure
“Resetting the UPS System after Load Off” of this chapter before startingthe UPS.
NOTE: TheRemoteEmergencyLoadOffoptionfunctionsthesamewayas the
LOAD OFF pushbutton on the Monitor Panel.

To Use the LOAD OFF Pushbutton

1. Raise the clear plastic shield covering the red LOAD OF F pushbutton on the
Monitor Panel.
2. Press the LOAD OFF pus hbutton.
The breaker and contactors open (you can hear them opening). The CB1 sw itch
trips, and the Load Off PUSH TO RESET pushbutton on the UPS Control Panel pop s
out. The UPS system shuts down.

Resetting the UPS System after Load Off

CAUTION:
Do not attempt to restart the s ystem after Load Off until the cause o f the
emergency has been identified and cleared.
The Load Off PUSH TO RESET pushbutton is a small white button on the UPS
Control Panel. The PUSH TO RESET pushbutton pops o ut and the CB1 switch
trips when the LOAD OFF pushbutton on the Monitor Panel is activated.
To re set t he U PS s yste m:
1. Press the Load Off PUSH TO RESET pushbutton until it clicks in and remains
recessed.
2. Move the CB1 switch from the center (tripped)position to OFF.Theswitch
should be difficult to move from the TRIPPED position.
3. The UPS system is now reset. Torest art the UPS system, follow the procedure
in Chapter 4, “Starting and Stopping the UPS.”