• 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
®
and cable tension monitor
are connected and properly aligned.
• Periodic checks of the garage door opener are required to ensure safe operation.
• The model number label is located behind the hinged door of your opener.
• DO NOT exceed 10 complete cycles of door operation per hour.
• This garage door opener is ONLY compatible with myQ
®
and Security+ 2.0
®
accessories.
This product is intended for installation only by trained garage door technicians. This
product may require adjustments to door springs and or track configurations. This
product is not intended for use on low headroom tracks or garage doors utilizing
extension springs.
For Residential and Light Duty Commercial Use
Install On Sectional Doors With Torsion Assemblies Only
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Wall Mount Garage Door Opener
Model 8500
LiftMaster
300 Windsor Drive
Oak Brook, IL 60523
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