3
Caution
When the UPS is used in compliance with UL standards, battery replacement should be
performed or supervised by personnel familiar with the danger of batteries and the required
precautions.
2. Replacing the battery
The battery can be replaced while the UPS is stopped (power supply output stopped).
* When the battery replacement LED lights up/blinks and beeper sounds, press the ESC switch
for 0.5 seconds to stop the beeper. (Lighting/blinking of “battery replacement” LED does not
disappear.)
* 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.
UPS battery replacement procedure
1.
Use a screwdriver to loosen (turn counter-clockwise) the 2 screws on the left side (for the
BN75R) or right side (for the BN150R and BN300R) of the front panel of the UPS.
①
For the BN75R, pull the left side of the front panel towards you to remove it.
②
a
For the BN150R and BN300R, pull the right side of the front panel towards you to remove it.
Be careful not to pull the cables of the LCD or disconnect the connectors.
②
b
<BN75R>
<BN150R/BN300R>
②a
①
①
②b
Caution: Do not pull the cables of the LCD or disconnect the connectors.
