7.2.3 Indicators ( LED indicators ) ............................. 34
7.2.4 Liquid crystal display .......................................... 34
7.2.5 Abbreviation index ............................................. 36
7.2.6 Audible signals ................................................... 36
7.3 UPS operating states ................................................ 37
7.4 UPS settings ............................................................. 38
8 Interfaces and Communication ........................................ 40
8.1 Computer interfaces RS232 and USB ...................... 40
8.2 Communication slot .................................................. 40
8.3 Shutdown and UPS management software .............. 40
8.4 Emergency Power Off ( EPO ) ................................. 41
8.5 Overvoltage/data cable protection ............................ 42
9 Troubleshooting ............................................................... 43
9.1 Malfunctions .............................................................. 43
9.1.1 Reference fault code table ................................. 43
9.1.2 Alarm messages / warnings ............................... 44
9.1.3 Fault indications / solution approaches .............. 44
10 Service ............................................................................. 46
10.1 Charging the battery ................................................. 46
10.2 Regular checks ......................................................... 47
10.2.1 Visual check ....................................................... 47
10.2.2 Battery check ..................................................... 47
10.2.3 Fan check .......................................................... 47
10.3 Battery replacement .................................................. 48
11 Storage, Removal and Disposal ...................................... 51
11.1 Storage ...................................................................... 51
11.2 Removal .................................................................... 51
11.3 Disposal .................................................................... 51
12 Appendix .......................................................................... 53
12.1 Glossary ( technical terms ) ..................................... 53
12.2 Index ......................................................................... 54
12.3 Notes ......................................................................... 55