111 Eaton® 9390 (100–160 kVA) UPS Installation and Operation Manual 164201604—Rev F
All power to the critical load is lost when the LOAD OFF is selected in the following step. You should use this
feature only when you want to de-energize the critical load.
2. To shut down the UPS, press LLOOAADD OOFFFF from the Load Off menu bar, and hold for three seconds. To
abort the shutdown, press CCAANNCCEELL.
When LOAD OFF is selected and held for three seconds, the input, output, and bypass backfeed
contactors open, the battery breaker or disconnect is tripped, and the power module is turned off.
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 LLOOAADD OOFFFF pushbutton, follow the procedure in
9.1.1 Starting the UPS in Normal Mode or 9.1.2 Starting the UPS in Bypass Mode.
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A UPS emergency power-off is initiated by the REPO pushbutton switch. In an emergency, you can use this
switch to control the UPS output. The REPO switch de–energizes the critical load and powers down the UPS
immediately, without asking for verification.
The UPS, including Bypass, remains off until restarted.
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 you want to de-energize the critical load.
NNOOTTEE The following instructions are for the Eaton supplied REPO switch. If a customer-
supplied REPO switch is used, it may not activate in the same manner; refer to the
operating instructions provided with the switch.
To use the REPO switch:
1. Firmly push the red pushbutton until it locks into place. The switch latches into the activated state.
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.
DO NOT attempt to restart the system after Load Off until the cause of the shutdown has been identified and
cleared.
2. To deactivate the REPO switch, insert the supplied key and rotate clockwise until the red pushbutton
releases. To remove the key, rotate the key back to the vertical position.
3. To restart the UPS after using the REPO pushbutton, follow the procedure in
9.1.1 Starting the UPS in Normal Mode or 9.1.2 Starting the UPS in Bypass Mode.
NNOOTTEE Follow Lockout/Tagout (LOTO) procedures for your location. The key should not be
stored in the switch. DO NOT insert the key until the fault is resolved.
UPS Operating Instructions
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