PowerWalker VFI 1000 LE - Manual (Page 22)

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automatically periodically. The default period is once per week.
3) The battery test could be performed by the command from monitoring
software through the communication port.
4) If the UPS enter the battery test mode, the display and buzzer indication
will be same as the battery mode except that the Bypass/Battery LED is
flashing. So you can check the battery level at this mode.
3.8 Turn off the UPS with mains (AC source)
1) Firstly turn off the UPS (inverter) to bypass mode, please press the button
continuously for more than 2 seconds.
2) After you press the button, the buzzer will beep once. All the LEDs will be
lightened, and then black out one by one. Then the panel will display the
bypass mode.
Note 1: If the UPS have been set to enable the bypass output, the output
socket will have voltage from mains directly after you turn off the UPS
(inverter) to bypass mode.
Note 2: Because there is risk of power loss for the loads if you turn off
the UPS to bypass mode, please make sure the loads are prepared for
your operation.
3) If you want to turn off the output of UPS and shut down the UPS
completely, you have to cut off the mains input of UPS.
Note: please make sure all the loads are prepared or turned off for your
operation before you shutdown the UPS system.
4) After you cut off the mains input of UPS to shut down, all the LEDs will be
lightened, and then black out one by one. Finally all the LEDs will be
lightened to indicate the UPS is saving data to the memory. After the
saving process, the UPS will be shutdown completely.