Using the LOAD OFF Pushbutton
Load Off is initiated by the covered, red LOAD OFF 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
WARNING:
All power to the critical load is lost when you press this pushbutton. You should use this feature only in an emergency or when you want to
To restart the UPS after pressing the LOAD OFF pushbutton, follow the procedure “Resetting the UPS System after Load Off” of this chapter before starting the UPS.
NOTE: The Remote Emergency Load Off option functions the same way as the LOAD OFF pushbutton on the Monitor Panel.
To Use the LOAD OFF Pushbutton
1.Raise the clear plastic shield covering the red LOAD OFF pushbutton on the Monitor Panel.
2.Press the LOAD OFF pushbutton.
The breaker and contactors open (you can hear them opening). The CB1 switch trips, and the Load Off PUSH TO RESET pushbutton on the UPS Control Panel pops out. The UPS system shuts down.
Resetting the UPS System after Load Off
CAUTION:
Do not attempt to restart the system after Load Off until the cause of 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 out and the CB1 switch trips when the LOAD OFF pushbutton on the Monitor Panel is activated.
To reset the UPS system:
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. The switch should be difficult to move from the TRIPPED position.
3.The UPS system is now reset. To restart the UPS system, follow the procedure in Chapter 4, “Starting and Stopping the UPS.”
Powerware 9315 (200 kVA | 83 |
164201036 Rev. D 041500 |
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