34 4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 09Figure 30. From SERVICE to LINERotate switchto LINE position2. To transition the UPS from LINE to UPS, press and hold the red button and turn the switch to UPS (seeFigure 31 ).NOTE 1 Pressing the red button sends the UPS into Internal Bypass mode. This allows the UPSoutput to synchronize with utility for safe, uninterrupted transfer.NOTE 2 In UPS mode, the UPS resets from Internal Bypass to UPS Normal mode (online mode).This transition may take as long as 60 seconds.Figure 31. From LINE to UPSRotate switchto UPS position UPSMODEUTILITY LOADBPMUPSFROMUPSTOUPSINPUT OUTPUTINPUT OUTPUT3. 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.After turning the load position handle to the UPS position and releasing the red button, if the Eaton 9PXMUPS remains in Bypass mode, return the UPS to Normal mode using the following procedure for properoperation:No Break Transfer from Service Bypass to UPS Mode