UPS OPERATING INSTRUCTIONSEATON Power Xpert 9395 UPS (1000–1100 kVA) Installation and Operation Manual 164201764 Rev 3 www.eaton.com/powerquality 7-4510. Verify no alarms are active on UPS being restarted.11. Verify the External Communications Failure alarm has cleared and no otheralarms are active on the online UPSs.12. On the System Status screen, select the UPS command.13. Press the CONTROLS pushbutton on the System Status menu bar. The UPSControl Command screen is displayed.14. On the UPS Control Command screen, select GO TO ONLINE.15. Press the SELECT pushbutton on the UPS Command menu bar.NOTE If the UPS is starting on a bus with other online paralleled UPSs, the UPS will not go to bypassduring startup. The UPS will start, sync to the other UPSs online, and go online.16. Verify the following messages display sequentially on the UPS status line:DC STARTING, CHARGER OFFINVERTER STARTINGINVERTER SYNCINGONLINE, CHARGER ONThe rectifier and inverter turn on. The inverter continues to ramp to full voltage.Once the inverter reaches full voltage, the UPS output contactor (K3) closes.Power is now supplied to the critical load in Online mode along with the otherUPSs online. It takes approximately one minute for the UPS to achieve Onlinemode.The ONLINE status indicator is illuminated. The UPS status indicates ONLINE. TheUPM status indicates ONLINE, CHARGER ON.7.4.25 UPS and Critical Load ShutdownTo perform maintenance or service on the critical load, shut down power to the load:1. Turn off all equipment that is being powered by the distributed bypass system.2. Transfer the UPSs to bypass by performing the procedure in paragraph 7.4.17.3. Perform the LOAD OFF procedure in paragraph 7.4.27.The input, output, battery, and bypass backfeed contactors open, and the powermodule is turned off.W A R N I N GPower is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.4. If the UPSs contain input breakers (CB1), open all UPS input breakers.5. Open the input and bypass feeder circuit breakers on all UPSs.
