Battery Backup - Craftsman 139.53918D Owner's Manual

Battery Backup
OPERATING INSTRUCTIONS
1. Test the installed battery with the motor unit.
To test the battery, disconnect the motor unit power cord from
the electrical outlet.
• A solid orange LED indicates the battery is operating on battery
power.
• A flashing orange LEDwith beep indicates the unit is operating
on battery power and that the battery charge is low.
• To test the battery is functioning properly, open and close the
garage door.
• Re-connect the motor unit power cord back into the electrical
outlet.
• Verify that the green LEDis flashing on the BBU(indicates that
the battery is now charging).
• Test completed.
2. Chargethe battery.
• Batterywill take 24 to 48 hours to fully charge.
A fully charged battery supplies 12 Vdc to the motor unit for one
to two days of normal operation during an electrical power
outage. If the battery voltage drops too low, the batteries will
disconnect and the motor unit will no longer operate under
battery power.
After the electrical power has been restored, the battery will
recharge within 48 hours. Under normal usage batteries will last
3 to 5 years.
To obtain maximum battery life and prevent damage,
disconnectthe battery when the motor unit is unpluggedfor an
extendedperiod of time.
NOTE: Door operation may be limited until battery is fully
charged. The motor unit's lights will not turn on during battery
mode.
o o
Battery
Door
To reduce the risk of FIREor INJURY to persons:
• DisconnectALL electric and battery power BEFORE
performing ANY service or maintenance.
• Use ONLY Craftsman part #41B822 for replacementbattery.
• DONOT dispose of battery in fire. Battery may explode.
Check with local codes for disposal instructions.
Battery
Status LED
@
NOTE:LED is most visible with worklight off.
GREENLED:
Aft systems are normal
• A solid LEDlight indicates the battery is fully charged.
• A flashing LEDindicates the battery is being charged.
NOTE:Battery does not have to be fully charged to operatethe
motor unit.
ORANGELED:
Themotor unit has lost power and is operating off of the battery.
• A solid LEDwith beep, sounding approximately every 2
seconds, indicates the motor unit is activating the door and is
operating off of the battery.
• A flashing LEDwith beep, sounding every 30 seconds,
indicates battery is low.
• Once the power is restored the battery will recharge. This is
indicated by a flashing green LED.
RED LED:
• If a red LED remains on when the power is restored, and is
accompanied by a beep sounding every 30 seconds, please call
for service.
• To obtain maximum battery life and prevent damage, also
disconnect the battery if you unplug the motor unit while on
vacation or any other extended period of time.
33