For Residential Use Only
• 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.
®
GARAGE DOOR OPENER
OWNER’S MANUAL
Models 3130M 1/3 HP and 3240M 1/2 HP
LiftMaster
845 Larch Avenue
Elmhurst, IL 60126-1196