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Power to the critical load is de-energized and the UPS powered
S
down. UPS breakers CB1, CB3, and FBP , and Battery Disconnect
CB2 trip and the UPS is cut off from utility power.
The critical load is transferred to bypass and the UPS powered
S
down. UPS breakers CB1 and CB3, and Battery Disconnect CB2
trip and the UPS is cut off from utility power.
The UPS (including Bypass) remains locked off until you reset the EMERGENCY
UPM OFF pushbutton.
To restart the UPS after pressing the EMERGENCY UPM OFF pushbutton, follow
the procedure, "Resetting the UPS System after Emergency UPM Off", of this
chapter, before starting the system.
NOTE: The Remote Emergency Power Off option functions the same way as the
EMERGENCY UPM OFF pushbutton on the UPS Control Panel.
12.8.1 To Use the UPS EMERGENCY UPM OFF
Pushbutton
1.
Raise the clear plastic shield covering the red UPS EMERGENCY UPM OFF
pushbutton on the UPS Control Panel.
2.
Press the EMERGENCY UPM OFF pushbutton.
The breakers open (you can hear them opening) and the
PUSH IN TO RESET pushbutton on the UPS Control Panel pops out.
12.8.2 Resetting the UPS System after an EMERGENCY
UPM OFF
CAUTION:
Do not attempt to restart the system after
of the emergency has been identified and cleared.
The Emergency UPM Off PUSH IN TO RESET pushbutton is a small white button
on the UPS Control Panel. The PUSH TO RESET pushbutton pops out when the
Emergency UPM Off pushbutton on the UPS Control Panel is activated.
To reset the UPS system:
1.
Press the Emergency UPM Off PUSH IN TO RESET pushbutton until it clicks
in and remains recessed.
2.
Breakers CB4 and FBP charge and close.
3.
Reset tripped circuit breakers on UPS systems with manual CB1 and CB2
breakers.
4.
The UPS system is now reset. To restart the UPS system, follow the procedure
at the beginning of this chapter.
Powerware 9315 (500 kVA- -750 kVA) Installation and Operation
164201244 REV. D 030101
Emergency UPM Off
Emergency UPM Off
until the cause
12--5
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