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3. Connect devices to UPS
After the UPS is turned on, you can connect devices to the UPS.
1) Turn on the UPS first and then switch on the devices one by one. The LCD panel will display total
load level.
2) If it is necessary to connect the inductive loads such as a printer, the in-rush current of the load
should be calculated carefully to see if it meets the overload capability of the UPS. Any load more
than 150% over designed capacity the runtime will be less than 60ms
3) If the UPS is overload, the buzzer will beep twice every second.
4) When the UPS is overload, please remove some loads immediately. It is recommended to have the
total loads connected to the UPS less than 80% of its nominal power capacity to prevent overload
for system safety.
5) If the overload time is over acceptable time listed in spec in AC mode, the UPS will automatically
transfer to Bypass mode. After the overloading was resolved, it will return back to AC mode. If the
overload time is over acceptable time listed in spec in Battery mode, the UPS will enter fault status.
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”
“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 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 “UPS on/off” 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.
