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User Guide DP300E
7OA0001 GB rev.09
8.0
Preventive maintenance
8.1
General
The maintenance of the UPS systems should be carried out by trained service
engineers. We recommend that you sign a service and maintenance contract.
8.2
Fan
It is recommended to replace the fans every 3rd year.
8.3
Battery
Systems with built-in batteries have as standard a battery monitoring feature
(option in other systems).
Every time automatic cyclic or manual check is activated, the condition of the
battery is checked. The result is one of following:
1.
Battery is OK - nothing will happen
2.
Battery has reduced capacity - “Battery week” is given
3.
Battery capacity far to low - “Battery defective” is given
The battery monitoring test is performed by taking out max. 25% of the energy in
the battery. But if the battery monitor is not installed or the exact present back-up
time has to be checked, a battery capacity test (8.4) is recommended at least every
sixth month.
For safety reasons battery tests should preferably be made during uncritical periods
for the loads connected.
Test the battery capacity / condition from the keyboard as follows:
Preventive maintenance
