UPS Operating Instructions7-36 Eaton ® Power Xpert® 9395P-300 (300kVA, 300kW) UPS Installation and Operation Manual P-164000563—Rev 04 www.eaton.com/powerquality1. Press the CONTROLS pushbutton on the main menu bar. The System Status screen is displayed.2. On the System Status screen, select the CHARGER command.3. Press the CONTROLS pushbutton on the System Status menu bar. The Charger Control Command screenis displayed.4. On the Charger Control Command screen, select CHARGER OFF.5. Press the SELECT pushbutton on the Charger Command menu bar.7.5.11 Using the UPS LOAD OFF PushbuttonA UPS Load Off is initiated by either a command or a pushbutton. It controls the UPSs' outputs by poweringdown the UPS and de-energizing the critical load. The UPSs (including Bypass) remain off until restarted.This procedure initiates a UPS Load Off using the LOAD OFF pushbutton.To use the LOAD OFF pushbutton:1. Press the LOAD OFF pushbutton on the UPS to shut down.The Load Off screen is displayed, providing a choice to proceed or abort the shutdown.CAUTIONAll power to the critical load is lost when the LOAD OFF pushbutton is selected in the followingstep. You should use this feature only when you want to de-energize the critical load.2. To shut down the UPS, press the LOAD OFF pushbutton from the Load Off menu bar, and hold for threeseconds. To abort the shutdown, press CANCEL. When LOAD OFF pushbutton is pressed and held forthree seconds, the input, output, battery, and bypass backfeed contactors open, and the power module isturned off on the UPS.3. If another UPS is to be shut down, proceed to that UPS and repeat Steps 1 and 2.CAUTIONDo not attempt to restart the system after a Load Off until the cause of the shutdown has beenidentified and cleared.4. Restart the UPS after pressing the LOAD OFF pushbutton by following the procedure in paragraph 7.5.1 or7.5.2.WARNINGPower is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.NOTE The UPS LOAD OFF controls each UPS independently and does not shut down thewhole distributed bypass system unless all UPSs have been transferred to bypass.To immediately shut down the whole system, use the REPO switch (see paragraph7.5.13).
