4 Operating the UPS 33
4.1 Silencing the Audible Alarm 33
4.2 Starting-up the UPS 33
4.3 Transferring to Battery Mode 33
4.4 Transferring from Normal to Bypass Mode 34
4.5 Transferring from Bypass to Normal Mode 34
4.6 Shutting Down the UPS Completely 34
4.7 Remote Emergency Power Off (REPO) 34
5 Operation and Display Panel 35
5.1 LED Indicators 36
5.2 LCD Menu and Screens 36
5.2.1 Start-up and Flow Screens 36
5.2.2 Main Menu 37
5.2.3 Status Screen 38
5.2.4 Settings Submenu 41
5.2.5 Control Screen 47
5.2.6 Log Screen 48
5.2.7 About Screen 52
5.3 Editing Display and Operation Settings 54
5.3.1 Setting Prompts 54
5.3.2 Changing the Password 55
5.3.3 Selecting the Display Language 56
5.3.4 Setting the Date and Time 56
6 Maintenance 57
6.1 Replacing Batteries 57
6.2 Charging Batteries 59
6.3 Checking UPS Operation 59
6.4 Cleaning the UPS 59
6.5 Replacing the UPS using Maintenance Bypass 60
6.6 Firmware Updates 61
7 Troubleshooting 63
7.1 Symptoms that Require Troubleshooting 63
7.2 Audible Alarm (Buzzer) 63
7.2.1 Faults 63
7.3 Troubleshooting UPS Issues 64
8 Specification 65
8.1 Battery Run Times 69
Appendices 73
Appendix A: Technical Support and Contacts 73
Appendix B: Open Source Software Legal Notices 75
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Vertiv™ Liebert® GXT5 UPS Installer/User Guide