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6 Maintenance
6.1 Battery Maintenance
The battery is key component of the UPS. The battery life depends on the
ambient temperature, charging and discharging times. High ambient
temperature and deep discharging will shorten the battery life.
1. Sealed maintenance-free lead –acid battery be used in the standard.
When being connected to the utility power whether the UPS has been
turned on or not, the UPS keeps charging the battery and also offers the
protective function of charging and discharging.
2. Keep the ambient temperature between 15
℃
and 25
℃
3. If the UPS has not been used for a long period, charging is recommended
at the intervals 3 months.
4. Batteries should not be replaced individually.
5. Under normal conditions, the battery life lasts 3 to 5 years. In case if the
battery is found not in good condition, earlier replacement should be
made. The battery should only be replaced by qualified service
personnel.
Note:
1.Prior to battery replacement, the UPS must be turned off and disconnected
from utility power.
2. Metal objects such as rings and watches should be removed.
3. Use the screwdriver with insulated handle. Tools and other metal objects
should not be placed on the battery.
4. Short circuit or reverse connection between the positive and negative
terminal of the battery is strictly forbidden.
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6. 2 Checking UPS function
Every time when conducting field maintenance, please check the regular
function of the UPS, including:
1. Check the operation status of the UPS
If the main voltage is within the specifications, the UPS should operate
in normal mode; if the main voltage is abnormal, the UPS should operate
in battery mode. In both cases, there should be no fault indication.
2. Check the transfer between the UPS operation modes
Disconnect the main input to simulate a mains failure, the UPS should
transfer to battery mode and operate normally; then recover the mains
input, the UPS should transfer to normal mode and operate normally
3. Check the LED indicators of the UPS
During the check processes stated above, check that the LED indication
of the UPS agrees with the UPS operation mode.
