Chamberlain 8557 Manual

ELITE Series
Garage Door Opener
User's Guide
FOR RESIDENTIAL USE ONLY
.
Write down the following information
for future reference:
Serial Number:
Date of Purchase:
■ Please read this guide and the enclosed safety materials carefully!
■ The door WILL NOT CLOSE unless the Protector System
properly aligned.
■ Periodic checks of the garage door opener are required to ensure safe
operation.
■ This garage door opener is ONLY compatible with MyQ™ and Security✚ 2.0™
accessories.
■ DO NOT enable the Timer-to-Close feature if you are installing the garage
door opener on a one-piece door. The Timer-to-Close is to be used ONLY with
sectional doors.
■ Attach enclosed warning labels to the location indicated on label.
CONTACT INFORMATION
Leave this Users Guide with the homeowner.
The images throughout this manual are for reference and your product may look different.
CONTENTS
Important Safety Instructions ......... 2-3
Operation....................................4
Using the Door Control..................5
Programming-Door Control Panel ....6
Programming - Remote Controls ......7
To Erase the Memory ...................7
To Open the Door Manually ............8
® is connected and
Battery Backup*..........................8
Adjustment ..................................9
Program the Travel .................... 10
Test the Safety Reversal System .... 11
Test the Protector System
Maintenance .............................. 12
Troubleshooting ...................... 13-14
Repair Parts .............................. 15
Warranty .................................. 16
®
.......... 11
www.liftmaster.com
The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
*If applicable.