Chamberlain 3240 1/2 HP Garage Door Opener User Manual


 
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
GARAGE DOOR OPENER
Models
Owner’s Manual
Please read this manual and the enclosed safety materials carefully!
Fasten the manual near the garage door after installation.
The door WILL NOT CLOSE unless the Protector System
®
is connected and properly
aligned.
Periodic checks of the opener are required to ensure safe operation.
The model number label is located on the front panel of your opener.
®
3130 1/3 HP 3240 1/2 HP
For Residential Use Only