8550 Manual
Page 1
Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE ONLY Write down the following information for installation instructions. . NOTE: If you are installing the garage door opener on a one-piece door, visit www.liftmaster.com for future reference: Serial Number: Date of Purchase: ...www.liftmaster.com The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 Contents BELT DRIVE GARAGE DOOR OPENER.. 1 PREPARATION 2 ASSEMBLY 4 INSTALLATION 6-13 INSTALL THE DOOR CONTROL.....14-16 INSTALL THE PROTECTOR SYSTEM 17-20 POWER 21-22 ADJUSTMENT 23-25 BATTERY BACKUP 26...
Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE ONLY Write down the following information for installation instructions. . NOTE: If you are installing the garage door opener on a one-piece door, visit www.liftmaster.com for future reference: Serial Number: Date of Purchase: ...www.liftmaster.com The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 Contents BELT DRIVE GARAGE DOOR OPENER.. 1 PREPARATION 2 ASSEMBLY 4 INSTALLATION 6-13 INSTALL THE DOOR CONTROL.....14-16 INSTALL THE PROTECTOR SYSTEM 17-20 POWER 21-22 ADJUSTMENT 23-25 BATTERY BACKUP 26...
8550 Manual
Page 26
Battery Backup To reduce the risk of FIRE or INJURY to persons: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Use ONLY LiftMaster part # 485LM for replacement battery. • Do NOT dispose of the garage door opener. NOTE: The garage door opener may explode. ALWAYS wear protective gloves and eye...
Battery Backup To reduce the risk of FIRE or INJURY to persons: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Use ONLY LiftMaster part # 485LM for replacement battery. • Do NOT dispose of the garage door opener. NOTE: The garage door opener may explode. ALWAYS wear protective gloves and eye...
8550 Manual
Page 27
... longer hold a charge and needs to fully charge. Battery does not have to be limited until the battery is most visible with normal usage. To obtain maximum battery life and prevent damage, disconnect the battery when the garage door opener is being charged. Battery Backup BATTERY STATUS LED NOTE: The Battery Status LED is fully charged. A fully charged...
... longer hold a charge and needs to fully charge. Battery does not have to be limited until the battery is most visible with normal usage. To obtain maximum battery life and prevent damage, disconnect the battery when the garage door opener is being charged. Battery Backup BATTERY STATUS LED NOTE: The Battery Status LED is fully charged. A fully charged...
8550 Manual
Page 37
Tucson, AZ 85706 For installation and service information call: 1-800-528-9131 Or visit us online at: www.liftmaster.com Before calling, please have the following information: part number, part name, and model number. 37 Country Club Rd. If you are... sending sensors with 3 feet (.9 m) 2-conductor wire 10 11 8 Straight Door Arm 178B34 9 White and Red/White Wire 41C5141-1 10 3V2016 Lithium Battery 10A19 11 Battery Backup 485LM Contact Information Address repair parts order to your garage door opener while calling. If you have access to : The Chamberlain Group, Inc. 6050...
Tucson, AZ 85706 For installation and service information call: 1-800-528-9131 Or visit us online at: www.liftmaster.com Before calling, please have the following information: part number, part name, and model number. 37 Country Club Rd. If you are... sending sensors with 3 feet (.9 m) 2-conductor wire 10 11 8 Straight Door Arm 178B34 9 White and Red/White Wire 41C5141-1 10 3V2016 Lithium Battery 10A19 11 Battery Backup 485LM Contact Information Address repair parts order to your garage door opener while calling. If you have access to : The Chamberlain Group, Inc. 6050...
8550 Manual
Page 38
Repair Parts Garage Door Opener Parts 11 9 4 3 1 12 5 2 10 4 3 7 8 6 38 DESCRIPTION 1 Sprocket and Sprocket Cover with Screws 2 End Panel with labels, battery cover and light socket 3 Light Lens 4 Light Socket 5 Transformer 6 Cover 7 Motor and Travel Module 8 Travel Module 9 End Panel with all labels and light socket 10 Receiver Logic Board 11 Line Cord 12 Filter Board with Screws NOT SHOWN Wire Harness with Screws Battery Backup PART NUMBER 41C589-2 41D217 41A7562 41C279 41A7635 41A7619 41D1739-1 41A7114-7 41D216 45DCT 41B135 41B7611 41B7418 485LM
Repair Parts Garage Door Opener Parts 11 9 4 3 1 12 5 2 10 4 3 7 8 6 38 DESCRIPTION 1 Sprocket and Sprocket Cover with Screws 2 End Panel with labels, battery cover and light socket 3 Light Lens 4 Light Socket 5 Transformer 6 Cover 7 Motor and Travel Module 8 Travel Module 9 End Panel with all labels and light socket 10 Receiver Logic Board 11 Line Cord 12 Filter Board with Screws NOT SHOWN Wire Harness with Screws Battery Backup PART NUMBER 41C589-2 41D217 41A7562 41C279 41A7635 41A7619 41D1739-1 41A7114-7 41D216 45DCT 41B135 41B7611 41B7418 485LM