3
Battery Replacement (Technician Reference Only)
As long as utility power is on, you can leave BB24V1U and other connected equipment powered on while replacing a battery.
Button-Alarm Silence
When BB24V1U is operating under battery mode, or its battery power is low, the audible alarm is turned on.
1
Press and hold the button for 5 seconds. BB24V1U will beep once to confirm that audible alarms have been disabled permanently.
2
To restore the audible alarm, press and hold the button for 5 seconds. BB24V1U will beep twice to confirm that
audible alarms have been turned on.
Button-Cold Start
Cold start uses battery power when BB24V1U is powered off, and no utility power is available.
Before using the cold start feature, make sure the battery is properly charged and installed.
To turn on the cold start feature, press and hold the button until 3 LED indicators are on.
LED Indicator
STEP 1:
A
Loosen the screw
from the enclosure.
STEP 2:
A
Slide off the
battery cover on
the back of the
BB24V1U.
STEP 3:
A
Remove the battery
from the enclosure.
B
Disconnect both
battery cable
connectors.
STEP 4:
A
Install a new battery
by connecting the
red wire to positive
terminal and the
black wire to the
negative terminal.
B
Insert the battery into
BB24V1U.
STEP 5:
A
Replace the battery
cover to resume normal
operation.
B
Tighten the screw into
the enclosure.
Fail
Mute
BLUE/RED
RED
BLUE
Battery replacement required. Alarm beeps once every 15 minutes. The LED also illuminates
when the battery is absent or when battery is in protection state then turn off the output power.
Press and hold the “Mute” button for 5 seconds to silence the audible alarm.
The LED will be on.
USC cable loss: The Status LED is easing between BLUE and RED for 120 seconds.
Note: After 120 seconds, the Status LED returns to its normal operational state (Battery
charging/Battery mode).
Battery charging mode: The Status LED is easing BLUE. The battery level is between 1%~99%.
Battery mode: Indicates the battery capacity.
1
Battery capacity > 20%: BLUE LED is on.
2
Battery capacity between 10% and 20%: RED LED is on, and alarm beeps 4 times
per minute.
3
Battery capacity
≤
10%: RED LED blinks, and alarm beeps 4 times per minute.
Indicator
Color
Condition
Status