6
. Maintenance and Inspection
46
Caution
When the unit is used in compliance with UL standards or CE marking, do not replace the battery
while in operation (while power is being output). Replacing the battery while in operation does not
comply with UL standards or CE marking. Make sure to stop the operation of the unit before replacing
the battery.
Perform replacement on a stable and fl at place.
●
Handle the battery carefully so that you do not drop it.
●
Not doing so could cause injury or burns due to liquid (acid) leakage.
Use a specifi ed battery for replacement.
●
Not doing so may cause a
fi
re.
●
Product model: Replacement battery pack for BU75RW/BU100RW: BUB100R
Replacement battery pack for BU200RW/BU300RW: BUB300R
Do not replace the battery in a place where there is fl ammable gas.
●
Spark may occur when connecting the battery, which may cause an explosion or
fi
re.
If fl uid (dilute sulfuric acid) leaks from the battery, do not touch the fl uid.
●
Doing so may cause blindness or burns.
●
If it contacts your eyes or skin, wash it out with lots of clean water and consult your doctor.
Do not disassemble or modify the battery.
●
Doing so could cause dilute sulfuric acid leak, which could cause blindness and burns.
Do not drop the battery and do not expose it to strong impact.
●
Dilute sulfuric acid may leak.
Do not short the battery with metal objects.
●
Doing so could cause an electric shock,
fi
re or burn.
●
Some electrical energy still remains inside the spent battery.
Do not put the battery into fi re and do not break it.
●
The battery may explode or leak dilute sulfuric acid.
Do not use a new battery and an old battery at the same time.
●
Dilute sulfuric acid may leak.
The battery can be replaced while the unit is stopped (power supply output stopped).
3. Guidelines for how often to check the battery (measure the backup time)
* The battery deteriorates even if it is stored. The higher the temperature is, the shorter
the life becomes.
Caution
(for
battery replacement
)
6-2
Replacing the battery
Ambient temperature
Check once every 6 months
Check once a month
20°C
For the
fi
rst 3 years after purchase
When 3 or more years have passed since purchase
30°C
For the
fi
rst 1.5 years after purchase When 1.5 or more years have passed since purchase
* Replacing the battery while the UPS is stopped:
For the BU75RW/BU100RW, stop the connected devices, turn OFF the unit’s power switch, and
disconnect the AC input plug from the wall.
For the BU200RW/BU300RW, stop the connected devices, turn OFF the unit’s power switch and
either disconnect the AC input plug or turn OFF the INPUT PROTECTION switch (input overcur-
rent protection switch).
* If an input power supply error such as a power failure occurs when replacing the battery while in
operation, backup cannot be performed and output stops.
* Do not replace the battery during backup operation. Output will stop.
