Battery Backup
Unit (BBU)
BATTERY BACKUP UNIT (OPTIONAL ACCESSORY LM950EV/ LM850EV ONLY )
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To prevent possible SERIOUS INJURY or DEATH
from electrocution, disconnect ALL electric and
battery power BEFORE performing ANY service
or maintenance.
1. Installation instructions for mounting the BBU.
After the opener has been installed, position the BBU
next to the opener on a structural support (joist) within
BBUTs cord length.
Attach the BBU to the support by using the wall or
ceiling mount holes on either side of the BBU and the
1” (25mm) screws (provided).
2. Connect the BBU to the Opener.
Disconnect the opener from the electrical outlet.
Connect the BBU cord into the connector on the
bottom of the opener (see picture below). Connect the
opener into the electrical outlet.
Turn the power ON. After 2 seconds the Courtesy
LEDs will flash 5 times.
After 20 seconds, the green diagnostic LED (see
picture next page) will begin to flash indicating the
BBU is charging.
IMPORTANT NOTE: Installation of the BBU when
permanent electrical power is not available (such as a
new construction and the electricity is not installed)
may damage the battery.
Unplug the BBU after testing to prevent damage.
OPERATING INSTRUCTIONS
1. Test the installed BBU with the opener.
To test the BBU, disconnect the opener power cord
from the electrical power outlet.
A solid orange LED indicates the BBU is operating
on battery power.
A flashing orange LED indicates the BBU is
operating on battery power and that the battery
charge is low.
To test the BBU is functioning properly, open and
close the garage door.
Re-connect the opener power cord back into the
electrical outlet.
Verify that the green LED is flashing on the opener
(indicates that the BBU is now charging).
Test completed.
2. Charge the battery.
Allow the battery 24 to 48 hours to fully charge
before using the BBU system.
A fully charged BBU supplies 12V DC to the opener
for one to two days of normal operation during an
electrical power outage. If the battery voltage drops
too low, the battery will disconnect and the opener
will no longer operate under battery power.
After the electrical power has been restored, the
battery will recharge within 48 hours. Under normal
usage the battery will last 3 to 5 years.
To obtain maximum battery life and prevent damage,
disconnect the battery backup when the opener is
not in use for an extended period of time.
NOTE: Door operation may be limited until the
battery is fully charged.
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