OperationEaton Bypass Power Module (BPM) User’s Guide P-164000628—Rev 2 www.eaton.com/powerquality 19Figure 22. From SERVICE to LINE2. To transition the UPS from LINE to UPS, press and hold the red button and turn the switch to UPS (seeFigure 23).Figure 23. From LINE to UPS3. Once the switch is in UPS mode and the UPS is in Normal mode (online mode), the system is in normaloperation and prepared to provide uninterrupted power to the critical load.NOTE 1 Pressing the red button sends the UPS into Internal Bypass mode. This allows theUPS output to synchronize with utility for safe, uninterrupted transfer.NOTE 2 In UPS mode, the UPS resets from Internal Bypass to UPS Normal mode (onlinemode). This transition may take as long as 60 seconds.12 3