Eaton 93PM-L 60-1, Installation And Operation Manual, Page: 152 / 164

140 Eaton 93PM-L 20 – 60 kW (208V) UPS Installation and Operation Manual P-164000711—Rev 03
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WARNING
Emergency Power Off (EPO) and Remote Emergency Power Off (REPO) functionality is disabled for UPS
systems configured for UL 924 auxiliary lighting. To remove power from the system a LOAD OFF command
(see paragraph
6.4.17 Using the LOAD OFF Command ) must be given using the front panel controls and all
breakers opened.
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 UPSs
immediately, without asking for verification.
The UPSs, including Bypass, remains 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 you want to de-energize the critical load.
NOTE 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 (see
Figure 77 ).
The rectifier, inverter, battery, and bypass switchgear open, and the power module is turned off
immediately on all UPSs, without asking for verification.
CAUTION
Do not attempt to restart the system after the REPO until the cause of the shutdown has been identified and
cleared.
2. To deactivate the REPO switch in preparation for restarting the UPS, insert the supplied key and rotate
clockwise until the red pushbutton releases (see
Figure 77 ). To remove the key, rotate the key back to the
vertical position.
3. Restart the UPS by following the procedure in paragraph
6.4.1 Starting the Parallel System in Double Conversion Mode or
6.4.2 Starting the Parallel System in Bypass Mode .
WARNING
Power is present inside the UPS cabinet until the upstream input feeder circuit breakers and battery breakers
are opened. Wait at least 5 minutes before accessing internal components.
UPS Operating Instructions