UPS OPERATING INSTRUCTIONSEATON Eaton 9395 550/275 UPS (225–550 kVA) Installation and Operation Manual 164201716 Rev 2 www.eaton.com/powerquality7-4411. Verify the following messages display sequentially on the UPM status line:DC STARTING, CHARGER OFFINVERTER STARTINGINVERTER SYNCINGREADYThe UPM rectifier and inverter turn on.12. To transfer the UPM to Online mode, press the CONTROLS pushbutton on the UPSControl Command menu bar. The UPM Control Command screen is displayed.13. On the UPM Control Command screen, select UPM GO TO ONLINE.14. Press the SELECT pushbutton on the UPM Command menu bar.The UPM transfers to Online mode. The UPM status indicates ONLINE.7.4.22 Single UPS Shutdown using Load OffNOTE To shut down a single UPS, MOBs with dual auxiliary contacts must be installed and connectedaccording to the procedure in paragraph 5.2 on page 5-4.To shut down a single UPS:1. Open the MOB for the UPS being shut down.2. On the UPS to shut down, press the CONTROLS pushbutton on the main menubar. The System Status screen is displayed.3. On the System Status screen, select the BYPASS command.4. Press the CONTROLS pushbutton on the System Status menu bar. The BypassControl Command screen is displayed.5. On the Bypass Control Command screen, select GO TO BYPASS.6. Press the SELECT pushbutton on the Bypass Command menu bar.The UPS being shut down transfers to Bypass mode.The BYPASS status indicator is illuminated. The Bypass status indicates ON. TheUPM status indicates READY. The power module remains on.NOTE Load Off will turn off only the UPS being shut down. The remaining UPSs will remain onlinesupplying power to the critical load.7. Perform the LOAD OFF procedure in paragraph 7.4.27 on the UPS being shutdown.The input, output, battery, and bypass backfeed contactors open, and the powermodule is turned off on the UPS being shut down.Logic power remains on.8. Verify the battery breaker or disconnect for the UPS being shut down is open. Ifnot, open the breaker.
