CONTENTS
Preparation. . . . . . . . . . . . . . . .2-3
Assembly . . . . . . . . . . . . . . . . .4-5
Installation . . . . . . . . . . . . . . .6-13
Install the Door Control. . . . . . 14-16
Install the Protector System
®
. . 17-20
Power. . . . . . . . . . . . . . . . . . 21-22
Adjustments . . . . . . . . . . . . . 23-25
Operation . . . . . . . . . . . . . . . . . 26
Features . . . . . . . . . . . . . . . . . . 27
Door Control . . . . . . . . . . . . . 28-29
Remote Control . . . . . . . . . . . 30-31
To Erase the Memory . . . . . . . . . 31
To Open the Door Manually . . . . . 32
Maintenance . . . . . . . . . . . . . . . 32
Troubleshooting. . . . . . . . . . . 33-34
Accessories. . . . . . . . . . . . . . . . 35
Warranty. . . . . . . . . . . . . . . . . . 36
Repair Parts . . . . . . . . . . . . . 37-38
PREMIUM Series
Belt Drive 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. (*Not available on all
models)
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:
Model 8355 - 1/2 hp
FOR RESIDENTIAL USE ONLY
Write down the following information for
future reference:
.
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