CONTENTS
Preparation . . . . . . . . . . . . . . . .1-2
Assembly . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . 4-11
Install the Door Control. . . . . . 12-13
Install the Protector System
®
. . 14-17
Power. . . . . . . . . . . . . . . . . . 18-19
Adjustments . . . . . . . . . . . . . 20-22
Operation . . . . . . . . . . . . . . . . . 23
Features . . . . . . . . . . . . . . . . . . 24
Door Control . . . . . . . . . . . . . 25-26
Remote Control . . . . . . . . . . . . . 27
To Erase the Memory . . . . . . . . . 27
To Open the Door Manually . . . . . 28
Maintenance . . . . . . . . . . . . . . . 29
Troubleshooting. . . . . . . . . . . 30-31
Accessories. . . . . . . . . . . . . . . . 32
Warranty. . . . . . . . . . . . . . . . . . 33
Repair Parts . . . . . . . . . . . . . 34-35
1/2 hp
Garage Door Opener
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
■ 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 garage door opener are required to ensure safe operation.
■ The model number label is located on the front panel of your garage door opener.
■ This garage door opener is ONLY compatible with MyQ
®
and Security✚ 2.0™
accessories.
■ ONLY enable the Timer-to-Close or MyQ
®
remote operation feature when the
garage door opener is installed on a sectional door.
NOTE: If you are installing the garage door opener on a one-piece door, visit
www.liftmaster.com for installation instructions.
www.liftmaster.com
Serial Number:
Date of Purchase:
Models
• M885
• M8856
FOR RESIDENTIAL USE ONLY
Write down the following information for
future reference:
.
.
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