UPS OPERATING INSTRUCTIONSEATON Powerware® 9390 UPS (20–80 kVA) Installation and Operation Manual 164201603 Rev 2 www.powerware.com9-28. Close the battery breaker any time after INVERTER SYNCING or CLOSEBATTERY appears on the display.Once the inverter reaches full voltage, and the battery breaker is closed, the UPSoutput contactor K3 closes and the static switch turns off. Power is now suppliedto the critical load in Normal mode. It takes approximately 1 minute for the UPSto achieve Normal mode.9. The UPS is now operating in Normal mode and the NORMAL status indicator isilluminated.9.1.2 Starting the UPS in Bypass ModeIf the inverter output of the UPS is not available and the critical load needs to beenergized:C A U T I O NIn Bypass mode, the critical load is not protected from commercial power interruptions and abnormalities.1. Close the UPS input feeder circuit breaker.2. If the UPS is dual feed, close the UPS Bypass input feeder circuit breaker.3. Observe the UPS control panel becoming active, indicating logic power.4. Press the CONTROLS pushbutton on the main menu bar. The System Controlsscreen appears.5. On the System Controls screen, the power module (PM) status should indicateSHUTDOWN.6. Press the BYPASS pushbutton on the System Controls menu bar.The critical load is immediately supplied by the bypass source, in Bypass mode.7. The UPS is now operating in Bypass mode and the BYPASS status indicator isilluminated.9.1.3 Starting the Power ModuleTo start the power module without transferring the critical load to normal:1. Close the UPS input feeder circuit breaker.2. If the UPS is dual feed, close the UPS Bypass input feeder circuit breaker.3. Observe the UPS control panel becoming active, indicating logic power.4. Press the CONTROLS pushbutton on the main menu bar. The System Controlsscreen appears.5. On the System Controls screen, the power module (PM) status should indicateSHUTDOWN.6. Press the pushbutton to display System Controls Screen 2.7. Press the PM ON pushbutton on the System Controls menu bar.
