3. Check if the battery is discharging: When AC mains is normal, the battery should not discharge; if the UPS
operates in Battery mode, you should find out the reason, such as mains failure, battery test, operator intervention,
and so on.
7.5 Checking UPS Function
It is recommended to check the UPS functions once every half year. Backup the load data before conducting the UPS
functions check. Procedures are as follows:
1. Press the power button to check if the buzzer beeps, indicators are on and the LCD display is normal.
2. Press the ESC key to check again if the indicators are on, the LCD display is normal and the UPS has been
transferred to the inverter mode.
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