Safety precautions
BU5002R/BU3002R/BU3002RH
Caution (when replacing the battery)
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 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.
Caution (when replacing the fan)
Remove the AC input plug from the power outlet (commercial power
supply) after turning off the power supply.
⚫ The fan rotates when the AC input is connected.
⚫ Check that the fan has stopped.
After bringing the unit from a cold place to a warm place, leave it for several hours
before starting use.
⚫ Condensation may occur if the unit is brought into a warm place suddenly, and if the unit is used in
such condition, there is a risk of breakdown.
After purchasing, charge the battery promptly.
⚫ If the battery is not used for a long time after purchasing, the battery properties degrade, and in
some cases it becomes unusable.
⚫ The battery can be charged once the AC input is connected to commercial power.