10-1EATON Powerware® 9390 UPS (40–80 kVA) Installation and Operation Manual S 164201535 Rev E powerware.comChapter 10 UPS Operating InstructionsThe following procedures provide instructions for operating the UPS or parallel system. Fora description of the UPS control panel functions, see Chapter 9, “Using the Control Panel.”NOTE Before starting the UPS or parallel system, ensure all installation tasks arecomplete and a preliminary startup has been performed by authorized servicepersonnel. The preliminary startup verifies all electrical interconnections to ensure theinstallation was successful and the system operates properly.NOTE Read this section of the manual and have thorough knowledge of parallel andUPS operation before attempting to operate any of the controls.NOTE The UPS displays two minutes of battery runtime at the initial startup. After a24-hour charging period, the UPS automatically runs a battery test and the correctbattery runtime displays.10.1 Single Module Operation10.1.1 Starting the UPS in Normal ModeTo start the UPS system, perform the following procedure: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 display 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 NORMAL pushbutton on the System Controls menu bar.If Auto Bypass is enabled, the critical load is immediately supplied by the bypasssource, in Bypass mode, until the inverter turns on and the UPS transfers toNormal mode. The status indicator on the UPS control panel indicates the UPS isin Bypass mode. If Auto Bypass is not enabled, the UPS output remains off untilthe UPS transfers to Normal mode.
