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At this time, if bypass is enabled, the UPS will power to the load via bypass. If bypass function is
disabled or the input power is not within bypass acceptable range, it will cut off output entirely.
4. Charge the batteries
1) After the UPS is connected to the mains and turned on in AC mode, the charger will charge the
batteries automatically except in battery mode, during battery self-test, overload or when battery
voltage is high.
2) It’s recommended to charge batteries for at least 10 hours before operation. Otherwise, the backup
time may be shorter than expected.
5. Battery mode operation
1) When the UPS is in Battery mode, the buzzer will sound according to different battery capacity. If
the battery capacity is more than 25%, the buzzer will beep once every 4 seconds. If the battery
voltage drops to the alarm level, the buzzer will beep once every sec to remind users that the
battery is at low level and the UPS will shut down imminently. 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, you have to prepare shutdown procedure to preserve working data or
devices. Otherwise, there is a risk of data loss or load failure.
2) In Battery mode, users can touch “SETTING”
“GENERAL”
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 may vary from different operating 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 “On/Off UPS” screen.
NOTE 1: 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 2: After turning off the UPS, please be aware that the UPS is working in Bypass mode, there
will be 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. The LCD display will turn off and UPS is now completely off.
8. Turn off the UPS without utility power supply in Battery mode
1) Touch “CONTROL” and select “Off UPS” icon to turn off the UPS. Refer to “On/Off UPS” screen.
2) Then UPS will cut off power to output terminals.
9. Mute the buzzer
1) Touch “SETTING” and select “GENERAL” item. There are two events available to mute. Refer to
“SETTING” screen.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for details.
10. Operation in warning status
1) When LCD screen shows “Fault Mode” and the buzzer beeps once every second, it indicates that
there are problems for UPS operation. Users can read the warning message(s) from “DATA LOG”
menu. Please refer to the Chapter 4 for details.
2) Some warning alarms can’t be muted unless the error is fixed. Please refer to section 3-3 for details.
