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3-4. Single UPS Operation
1. Turn on the UPS with utility power (in AC mode)
1) After power supply is connected correctly, set the breaker of the battery pack at “ON” position (this step
only necessary for long-run model). Then set the line input breaker at “ON” position. At this time the fan
is running and the UPS enter to power on mode for initialization, several seconds later, UPS operates in
Bypass mode and supplies power to the load via the bypass.
NOTE:
When UPS is in Bypass mode, the output voltage will directly power from utility after you switch
on the input breaker. In Bypass mode, the load is not protected by the UPS. To protect your precious
devices, you should turn on the UPS. Refer to next step.
2) Refer to
Screens 1.1-1.
3) A few seconds later, the UPS will enter into AC mode. If the utility is abnormal, the UPS will operate in
Battery mode without interruption.
NOTE:
When the UPS running out battery, it will shut down automatically at Battery mode. When the utility
is restored, the UPS will auto restart in AC mode.
2. Turn on the UPS without utility power supply (in Battery mode)
1) Make sure that the two strings of batteries are connected correctly at UPS’s ”+,GND,-” terminals and the
breaker of the battery pack is at “ON” position (only for long-run model).
2) Press the “Power-On” button to set up the power supply for the UPS. UPS will enter to power on mode.
After initialization, UPS will enter to No Output mode, then refer to
Screens 1.1-1.
3) A few seconds later, the UPS will be turned on and enter to Battery mode.
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 should be calculated
carefully to see if it meets the capacity of the UPS, because the power consumption of this kind of loads
is too big.
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 at AC mode, the UPS will automatically transfer
to Bypass mode. After the overload is removed, it will return to AC mode. If the overload time is over
acceptable time listed in spec at Battery mode, the UPS will become 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 directly.
4. Charge the batteries
1) After the UPS is connected to the utility power, the charger will charge the batteries automatically except
in battery mode or during battery self-test or overload or battery high voltage.
2) Suggest to charge batteries at least 10 hours before use. 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 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, if buzzer sound annoy, users can press the Mute button 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 environment temperature and load type.
5) When setting backup time for 16.5 hours (default value from LCD menu), after discharging 16.5 hours,
