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UPS Operating Instructions
10-14
EATON Powerware
®
9390 UPS (100–160 kVA) Installation and Operation Manual S 164201604 Rev B powerware.com
CAUTION
Do not attempt to restart the system after Load Off until the cause of the shutdown has been
identified and cleared.
3. To restart the UPS after pressing the LOAD OFF pushbutton, follow the procedure
in paragraph 10.2.1 or 10.2.2.
10.2.9 Using the Parallel System Remote Emergency Power-off Switch
A parallel system emergency power-off is initiated by the REPO pushbutton switch. In an
emergency, you can use this switch to control the UPM outputs. The REPO switch
de-energizes the critical load and powers downtheUPMsimmediately,withoutaskingfor
verification.
The UPMs, including Bypass, remain off until restarted.
CAUTION
All power to the critical load is lost when the REPO switch is activated in the following step.
You should use this feature only when y ou want to de-energize the critical load.
NOTE The following instructions are for the Powerware-supplied REPO switch. If a
customer-supplied REPO switch is used, i t may not activate in the same manner; refer
to the operating instructions provided with the switch.
To use the REPO switch:
1. Press the REPO pushbutton switch.
The input, output, and bypass backfeed contactors open, the battery breaker or
disconnect is tripped, and the power module is turned off immediately, without
asking for verification.
CAUTION
Do not attempt to restart the system after Load Off until the cause of the shutdown has been
identified and cleared.
2. To restart the UPMs after using the REPO pushbutton, reset the REPO switch and
then follow the procedure in paragraph 10.2.1 or 10.2.2.