UPS OPERATING INSTRUCTIONSEATON Eaton 9395 550/275 UPS (225–550 kVA) Installation and Operation Manual 164201716 Rev 2 www.eaton.com/powerquality7-127.3 Single UPS OperationThe paragraphs in this section provide operating instructions for a UPS systemcontaining only one UPS.NOTE A Field Installed UPM (FI-UPM) is always designated as UPM 4.7.3.1 Starting the UPS in Online ModeTo start the UPS system:1. Unfasten the front door latch and swing the door open (see Figure 4‐2 onpage 4-4).2. If the UPS contains input breaker CB1, verify that input breaker CB1 is open.3. Close the UPS input feeder circuit breaker.4. Close the UPS Bypass input feeder circuit breaker.5. If the UPS contains input breaker CB1, close input breaker CB1.6. Close the door and secure the latch.7. Observe the UPS control panel display becoming active, indicating logic power.8. Press the CONTROLS pushbutton on the main menu bar. The System Statusscreen is displayed.9. On the System Status screen, verify the UPS status is SHUTDOWN and the UPMstatus is OFFLINE.10. Close the battery breaker.11. Verify no alarms are active.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.If Auto Bypass is enabled (factory default), the critical load is immediatelysupplied by the bypass source, in Bypass mode, until the inverter turns on andthe UPS transfers to Online mode. The status indicator on the UPS control panelindicates the UPS is in Bypass mode. If Auto Bypass is not enabled, the UPSoutput remains off until the UPS transfers to Online mode.
