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NOTE:
LED is most visible with worklight off.
GREEN LED:
All systems are normal.
• A solid LED light indicates the battery is fully charged.
• A flashing LED indicates the battery is being charged.
NOTE:
Battery do not have to be fully charged to
operate the motor unit.
ORANGE LED:
The motor unit has lost power and is operating off of the
battery.
• A solid LED with beep, sounding approximately every
2 seconds, indicates the motor unit is activating the
door and is operating off of the battery.
• A flashing LED with 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.
To reduce the risk of FIRE or INJURY to persons:
• Disconnect ALL electric and battery power BEFORE
performing ANY service or maintenance.
• Use only LiftMaster part # 485LM for replacement battery.
• Do NOT dispose of battery in fire. Battery may explode.
Check with local codes for disposal instructions.
WARNING
CAUTION
WARNING
WARNING
Battery Stat
u
s LED
Battery Backup (Optional)
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 LED with 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.
•
V
erify that the green LED is flashing on the BBU
(indicates that the battery is now charging).
• Test completed.
2. Charge the battery.
• Battery will take 24 to 48 hours to fully charge.
A fully charged battery supplies 12
V
DC 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,
disconnect the battery when motor unit is unplugged
for an extended period 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.
