4 Maintenance and inspection
4-4 Replacing the battery
BU5002R/BU3002R/BU3002RH
Do not pull out the battery pack by pulling the connector or
cable.
⚫ There is a risk of smoke generation and ignition.
When an expansion battery unit is connected to the unit, be
sure to replace the battery packs of this unit and the expansion
battery unit at the same time.
⚫ Dilute sulfuric acid may leak.
⚫ There is a risk of an electric shock or a short circuit of the battery.
When the unit is used as a conforming product of the UL
standards, do not replace the battery while operating (while
power is being output).
The battery replacement function does not comply with UL
standards while operating, so be sure to replace the battery
after stopping operation of the unit.
⚫ To perform replacement while stopped, stop the connection function,
turn off the “Power” switch on the unit, and remove the “AC input” plug
from the power outlet.
⚫ When an input power error such as power outage occurs during battery
replacement while the unit is operating, the backup process is disabled
and output stops.
⚫ Do not replace the battery during the backup operation. Doing so will
stop the output.
* When a beep sound is heard with the “Battery replacement” LED lit or flashing, the
beep sound can be stopped by pressing the “ESC” switch for 0.5 seconds. (The
"Battery replacement" LED remains lit or flashing.)
* When an input power error such as power outage occurs during battery replacement
while the unit is operating, the backup process is disabled and output stops.
* Do not replace the battery during the backup operation. It will stop the output.
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