OPERATIONEATON BladeUPS® Maintenance Bypass Module User's Guide 164201785 Rev 1 www.eaton.com/powerquality38Output To Critical LoadMBMMains Input toMBM from UtilityMain Power Flow in UPS ModeMain Power Flow in Bypass ModeUPS InputBreakerBypassBreakerTo UPS InputFrom UPS OutputUPS OutputBreakerFigure 22. Path of Current Through the MBM in Bypass ModeUsing the UPS when an MBM is InstalledNOTE Before starting the UPS with the MBM, verify all of the UPS and MBM installation tasks arecomplete.1. Remove the MBM top and bottom front covers:Grasp the sides of each cover and pull forward. See Figure 23.2. Verify that the MBM circuit breakers are set as follows:Bypass Breaker OpenUPS Output Breaker ClosedUPS Input Breaker Closed3. Start the UPS in Normal mode. Refer to the instructions in the operation chapterof the BladeUPS user's guide.4. Attach the MBM top and bottom front covers:Align the pins on the rear of each cover with the openings in the MBM cabinet.Push the cover firmly into place. See Figure 23.
