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voltage drops to the alarm level, the buzzer will beep quickly (once every sec) to remind users that
the battery is at low level and the UPS will shut down automatically soon. Users could switch off
some non-critical loads to disable the shutdown alarm and prolong the backup time. If there is no
more load to be switched off at that time, you have to shut down all loads as soon as possible to
protect the devices or save data. Otherwise, there is a risk of data loss or load failure.
2) In Battery mode, users can touch “SETTING” ➔ “Basic” ➔ Audio Mute to enable “Mode Mute” to
disable the buzzer.
3) The backup time of the long-run model depends on the external battery capacity.
4) The backup time depends on the environment’s temperature and load type.
5) When setting backup time for 16.5 hours (default value from LCD menu), after discharging 16.5
hours, UPS will shut down automatically to protect the battery. This battery discharge protection
can be enabled or disabled through LCD menu.
6. 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”. Refer to “Battery Test” screen.
2) Users also can set battery self-test through monitoring software.
7. Turn off the UPS with utility power supply in AC mode
1) Touch “CONTROL” and select “Turn off UPS” icon to turn off the UPS. Refer to “UPS on/off” screen.
NOTE 1: If the UPS has been set to bypass output, it will bypass voltage from the utility power to
output terminal even though you have turned off the UPS (inverter).
NOTE 2: After turning off the UPS, please be aware that the UPS is working at Bypass mode and
there is risk of power loss for connected devices.
2) In Bypass mode, output voltage of the UPS is still present. In order to cut off the output, switch off
the line input breaker, bypass breaker and output breaker. A few seconds later the display will shut
down and the UPS will completely turn off. Please note DC voltage is still present internal to the
system!
8. Turn off the UPS without utility power supply in Battery mode
1) Touch “CONTROL” and select “Turn off UPS” icon to turn off the UPS. Refer to “UPS on/off” screen.
2) Then UPS will cut off power to output terminals.
9. Mute the buzzer
1) Touch “SETTING” and select “BASIC” item. There are two options available to mute. Refer to
“SETTING” screen.
2) Some warning alarms can’t be muted unless the error is resolved. Please refer to section 3-3 for
details.
10. Operation in warning status
1) When Fault LED illuminates and the buzzer beeps once every second, there are problems for UPS
operation. Users can read the warning message(s) from “DATA LOG” menu. Please refer to the
Section 3-2-6 for details.
11. Operation in Fault mode
1) When Fault LED illuminates and the buzzer beeps continuously, it means that there is a major error
with the UPS. Users can get the fault code from “DATA LOG” menu. Please refer to the Section
3-2-6 for details.
2) Please check the loads, wiring, ventilation, utility, battery after the fault occurs. Don’t try to turn on
the UPS again before solving the issue. If the problems can’t be fixed, please contact the
distributor or service personnel immediately.
3) For emergency case, please cut off connection from utility, external battery, and output
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