find out the reason, for instance: operator intervention, overload,
internal fault, etc.
3. Is the battery discharging: when the AC mains is normal, the
battery shouldn’t discharge; if the UPS is operating in Battery mode,
please find out the reason, for instance: mains failure, battery test,
operator intervention, etc.
V. Function Inspection
It is recommended to inspect the UPS functions once half year.
1. Press the OFF button, check whether the buzzer, LED indications
and LCD display are normal (see Section 3.1 Operation Mode).
Please do this after confirming that the AC mains is normal and data
backup has been done.
2. Press the ON/SILENCE button, check again whether the LED
indications and LCD display are normal and the UPS transfers to
Normal mode.
3. When the inverter is in Normal mode (the inverter indicator
shines), press and hold the ON/SILENCE button for 4 seconds to
start battery test. Should any battery problem be found, immediately
find out the problem and solve it.
Chapter 4 Maintenance 41
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