OPERATIONEATON BladeUPS® Maintenance Bypass Module User's Guide 164201785 Rev 1 www.eaton.com/powerquality406. Open the UPS Output breaker (see Figure 20 and Figure 24).The critical load is directly supplied by utility power.7. Shut down the UPS. Refer to the instructions in the operation chapter of theBladeUPS user's guide.C A U T I O NThe UPS Input breaker must be opened to electrically isolate the UPS.8. Open the UPS Input breaker (see Figure 20).9. Verify the UPS Input and Output indicators are not illuminated.The UPS can now be serviced or replaced safely.10. Verify the Critical Load indicator is illuminated.11. 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.Interlock BarFigure 24. BladeUPS MBM Breaker Interlock Operation – Bypass Mode
