UPS OPERATING INSTRUCTIONSEaton 9390 UPS (100–160 kVA) Installation and Operation Manual 164201604 Rev E www.eaton.com/powerquality 9-119.1.20 Using the Remote Emergency Power-off SwitchA UPS emergency power-off is initiated by the REPO pushbutton switch. In anemergency, you can use this switch to control the UPS output. The REPO switchde‐energizes the critical load and powers down the UPS immediately, without askingfor verification.The UPS, including Bypass, remains off until restarted.C A U T I O NAll power to the critical load is lost when the REPO switch is activated in the following step. You should usethis feature only when you want to de‐energize the critical load.NOTE The following instructions are for the Eaton Corporation-supplied REPO switch. If acustomer-supplied REPO switch is used, it may not activate in the same manner; refer to the operatinginstructions provided with the switch.To use the REPO switch:1. Firmly push the red pushbutton until it locks into place. The switch latches intothe activated state.The input, output, and bypass backfeed contactors open, the battery breaker ordisconnect is tripped, and the power module is turned off immediately, withoutasking for verification.C A U T I O NDO NOT attempt to restart the system after Load Off until the cause of the shutdown has been identified andcleared.2. To deactivate the REPO switch, insert the supplied key and rotate clockwise untilthe red pushbutton releases. To remove the key, rotate the key back to thevertical position.3. To restart the UPS after using the REPO pushbutton, follow the procedure inparagraph 9.1.1 or 9.1.2.NOTE Follow Lockout/Tagout (LOTO) procedures for your location. The key should not be stored in theswitch. DO NOT insert the key until the fault is resolved.DeactivatedUnlock pushbutton to releaseActivatedPushbutton locked into placeFigure 9‐1. REPO Operation
