UPS OPERATING INSTRUCTIONSEaton 9395 UPS (450–825 kVA) Installation and Operation Manual 164201725 Rev 4 www.eaton.com/powerquality7-46W A R N I N GPower is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.NOTE If the UPS contains an input breaker (CB1), DO NOT open the breaker unless no input feeder breakeris installed.9. Open the input and bypass feeder circuit breakers for the UPS being shut down.The UPS is now completely shut down.External Communications Failure alarm is active on remaining online UPSs. Thisis an expected event and will clear upon UPS restart.7.4.23 Single UPS Shutdown using UPM ShutdownNOTE 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 being 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 transfer to Bypass mode.The BYPASS status indicator is illuminated. The Bypass status indicates ON. TheUPM status indicates READY. The power module remains on.7. On the System Status screen, select the UPM command. The UPS ControlCommand screen is displayed.8. On the UPS Control Command screen, select the UPM 1 command.9. Press the CONTROLS pushbutton on the UPS Control Command menu bar.10. On the UPM 1 Control Command screen, select UPM OFF.11. Press the SELECT pushbutton on the UPM 1 Command menu bar.The UPM status indicates SHUTDOWN. The input, output, and battery contactorsopen, and the power module is turned off. The remaining UPMs supply thecritical load.Logic power remains on.12. Repeat Steps 8 through 11 selecting UPM 2 to shut down UPM 2.
