LiftMaster 3800 3800 Manual - Page 13
Installation Step 8 - battery backup
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UPC - 012381308002
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INSTALLATION STEP 8 Mount the Battery Backup Unit (BBU) (not provided) If the optional 475LM battery backup unit is part of this installation it should be installed at this time. • The BBU can be mounted to either the ceiling or a wall within 3' (.9 m) of the motor unit. • Position the BBU as desired to a structural support (ceiling joist or wall stud). • Attach the BBU to the support using the mounting holes on either side of the BBU. • Secure the BBU using the 1-1/2" lag screws (2) provided with the BBU unit. • Connect the BBU cord into the connector on the bottom of the motor unit. • Follow all instructions included with the 475LM unit to test for proper operation and testing of the BBU. BBU Cord 475LM Battery Backup Unit Connector 13
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13
INSTALLATION STEP 8
Mount the Battery Backup Unit (BBU)
(not provided)
If the optional 475LM battery backup unit is part of this
installation it should be installed at this time.
• The BBU can be mounted to either the ceiling or a wall
within 3' (.9 m) of the motor unit.
• Position the BBU as desired to a structural support
(ceiling joist or wall stud).
• Attach the BBU to the support using the mounting holes
on either side of the BBU.
• Secure the BBU using the 1-1/2" lag screws (2)
provided with the BBU unit.
• Connect the BBU cord into the connector on the bottom
of the motor unit.
• Follow all instructions included with the 475LM unit to
test for proper operation and testing of the BBU.
BBU Cord
Connector
475LM Battery
Backup Unit