7EN7.3 Display (Main Menu)................................................ 427.3.1 UPS status - display .......................................... 427.3.2 Event log............................................................ 467.3.3 Measurements ................................................... 477.3.4 Control ............................................................... 477.3.5 Identification ...................................................... 497.3.6 Settings.............................................................. 498 Interfaces and Communication ....................................... 558.1 RS232 and USB computer interfaces ..................... 558.2 Communications slot ............................................... 558.3 Shutdown and UPS management software ............ 568.4 EPO (Emergency Power Off) .................................. 578.5 Change-over contact ............................................... 589 Troubleshooting .............................................................. 589.1 Malfunctions ............................................................ 589.1.1 Alarm / error messages ..................................... 5910 Maintenance ................................................................... 6310.1 Charging the battery ................................................ 6310.2 Maintenance checks ................................................ 6310.2.1 Visual check ...................................................... 6310.2.2 Battery check ..................................................... 6410.2.3 Ventilator check ................................................. 6410.3 Battery replacement ................................................ 64Replace the EBM battery ................................................... 6811 Storage, Dismantling and Disposal ................................ 6911.1 Storage .................................................................... 6911.2 Dismantling .............................................................. 6911.3 Disposal ................................................................... 6912 Appendix ........................................................................ 7112.1 Technical terminology.............................................. 7112.2 Keyword register...................................................... 7212.3 Notes ....................................................................... 73