5. When setting discharging time for 16.5 hours (default value from LCD menu), after discharging 16.5 hours, UPS
will shut down automatically to protect the battery.
Test the batteries:
1. If you need to check the battery status when the UPS is running in AC mode/CVCF mode, you could touch
“CONTROL” and select “Battery Test”. See Figure 3.15 on page38 .
2. Users also can set battery self-test through monitoring software.
Turn off the UPS with utility power supply in AC mode:
1. Touch CONTROL and select On/Off UPS icon. It will show Turn off UPS? in screen and select Yes. See Figure 3.14
on page37 .
NOTE: If the UPS has been set to bypass output, it will bypass voltage from the mains to output terminal even though
you have turned off the UPS (inverter).
NOTE: After turning off the UPS, be aware that the UPS is working in Bypass mode, there will be risk of power loss for
connected devices.
NOTE: If the Auto Restart is set to Enable (see Auto Restart: on page63 ) the inverter will start automatically to online
mode if utility power is removed and restored.
2. In Bypass mode, output voltage of the UPS is still present. In order to cut off the output, switch off the bypass
input breaker. The LCD display will turn off and UPS is now completely off.
Turn off the UPS without utility power supply in Battery mode:
1. Touch “CONTROL” and select “On/Off UPS” icon. It will show “Turn off UPS?” in screen and select “Yes”. See
Figure 3.14 on page37 .
2. Then UPS will cut off power to output terminals.
WARNING! If the Auto Restart is set to Enable (see Auto Restart: on page63 ) the inverter will start
automatically to online mode when utility is removed and restored.
Mute the buzzer:
1. Touch “SETTING” and select “BASIC” item. There are two events available to mute. See Figure 3.25 on page43 .
2. Some warning alarms can not be muted unless the error is fixed. Refer to Single UPS Operation on page68 for
details.
Operation in warning status:
1. When warning code flashes and the buzzer beeps once every second, it means that a warning event occurs on
UPS. Users can read the warning messages from DATA LOG menu. Refer to the Troubleshooting on page79 .
2. Some warning alarms can not be muted unless the error is fixed. Refer to Single UPS Operation on page68 for
details.
Operation in Fault mode:
1. When fault code lights on the LCD screen and the buzzer beeps continuously, it means that there is a fatal error
with the UPS. Users can get the fault code from DATA LOG menu. Refer to the Troubleshooting on page79 for
details.
70 Proprietary and Confidential ©2024 Vertiv Group Corp. 3 Operations
Vertiv™ Liebert® MTP Online UPS User Manual 20-40-80kVA
To Next Page
Loading...
