UPS OPERATING INSTRUCTIONSPower Xpert 9395 UPS (450–550 kVA) Installation and Operation Manual 164201701 Rev 3 www.eaton.com/powerquality7-4011. 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 2.13. If the UPS is a Plus 1 model, repeat Steps 8 through 11 selecting UPM 4 to shutdown UPM 4.14. Verify the battery breaker or disconnect for the UPS being shut down is open. Ifnot, open the breaker.W 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.15. 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.7.4.22 Single UPS RestartTo restart a single UPS from a shutdown state:1. Close the MOB for the UPS being restarted.2. Close UPS input and bypass feeder circuit breakers for the UPS being restarted.3. Unfasten the front door latch and swing the door open on the UPS beingrestarted (see Figure 4‐2 on page 4-4).4. If input breaker (CB1) is installed on the UPS being restarted and is open, closethe breaker.5. Close the door and secure the latch.6. On the UPS being restarted, observe the UPS control panel display becomingactive, indicating logic power.7. On the UPS being restarted, press the CONTROLS pushbutton on the main menubar. The System Status screen is displayed.8. On the System Status screen, verify the UPS status is SHUTDOWN and the UPMstatus is SHUTDOWN.9. Close the battery breaker for the UPS being restarted.10. Verify no alarms are active on UPS being restarted.
