4 Maintenance and Inspection
4-1 Checking the battery
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4 Maintenance and Inspection
For cautions when maintaining the UPS, refer to “Caution (for maintenance)” shown in the
“Safety precautions” of the beginning of this manual.
4-1 Checking the battery
The lead battery used in the unit has a limited lifespan.
(The life varies depending on your storage/use environment and backup frequency.)
The nearer the end of the life is, the more rapidly deterioration proceeds.
4-1-1 Battery life expectancy
(* Not a guaranteed performance)
Ambient temperature
Battery life expectancy
25°C
5 years
30°C
3.5 years
35°C
2.5 years
40°C
1.7 years
4-1-2 Self-diagnosis test
This test performs a failure diagnosis on the unit and performs a test to check for battery
deterioration.
Use the procedure below to check whether a circuit failure has occurred inside the unit and
whether battery replacement is required.
There are two, automatic testing and manual testing, in the self-diagnosis test as follows.
■
Automatic testing
The self-diagnosis test is automatically performed at the factory settings, at the following
timing in the state that the UPS is connected to a commercial power source and the charge
of the battery has been completed. User’s operation to start the test is unnecessary.
・
When the “Power” switch is turned ON from OFF
・
Performed with one time per four weeks on the condition that the “Power” switch is ON
When charge of the battery is not completed, the self-diagnosis test is not performed
immediately.
It is performed automatically after the completion of charge.
