LiftMaster 8550 User Manual

Write down the following information for future reference:

Serial Number:

Date of Purchase:

Belt Drive Garage Door Opener

Model 8550

FOR RESIDENTIAL USE ONLY

■ 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 left side panel of your garage door opener.

■ 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.

NOTE: If you are installing the garage door opener on a one-piece door, visit

www.liftmaster.com for installation instructions.

www.liftmaster.com

The Chamberlain Group, Inc.

Elmhurst, Illinois 60126-1196

845 Larch Avenue

Contents

BELT DRIVE GARAGE DOOR OPENER .. 1

PREPARATION ............................. 2

ASSEMBLY ................................. 4

INSTALLATION ........................ 6-13

INSTALL THE DOOR CONTROL .....14-16

INSTALL THE PROTECTOR SYSTEM

POWER ................................21-22

ADJUSTMENT.........................23-25

BATTERY BACKUP ...................26-27

OPERATION ...............................28

FEATURES.................................29

DOOR CONTROL .....................30-31

REMOTE CONTROLS .................32-33

TO ERASE THE MEMORY ...............33

TO OPEN THE DOOR MANUALLY ......34

MAINTENANCE ...........................34

TROUBLESHOOTING .................35-36

REPAIR PARTS .......................37-38

ACCESSORIES ............................39

WARRANTY ...............................40

..............17-20

Torsion Spring

Extension Spring

3/16

7/16

1/2

5/32

5/16

5/8

9/16

1/4

7/16

Preparation

Safety Symbol and Signal Word Review

This garage door opener has been designed and tested to offer safe service provided it is installed, operated, maintained and tested in strict accordance with the instructionsand warnings contained in this manual.

When you see these Safety Symbols and Signal Words on the following pages, they will alert you to the possibilityof serious injury ordeath if you do not comply with the warnings that accompany them.The hazard may come from something mechanical or from electricshock. Read the warnings carefully.

Mechanical

When you see this Signal Word on the following pages, it will alert you to the possibilityof damage to your garage door and/or the garage door opener if you do not complywith the cautionary statements that accompany it. Read them carefully.

Electrical

Check the Door

1. Disable locks and remove any ropes connected to the garage door.

2. Lift the door halfwayup. Release the door. Ifbalanced, it should stay in place, supported entirely by its springs.

3. Raise and lower the door to check for binding or sticking. Ifyour door binds, sticks, or is out of balance, call a trained door systems technician.

4. Checkthe seal on the bottomof the door. Any gap between the floor and the bottom of the door must not exceed 1/4 inch (6 mm). Otherwise, the safety reversal systemmay not work properly.

5. The opener should be installed above the center of the door. Ifthere is a torsion spring or center bearing plate in the way of the header bracket,it may be installed within 4 feet(1.2 m) to the left or right of the door center.See installing the Header Bracket section.

Tools Needed

To prevent possible SERIOUSINJURYor DEATH:

• ALWAYS call a trained door systems technician if garage door binds, sticks, or is out of balance. An unbalanced garage door may not reverse when required.

• NEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, bracketsor their hardware, ALLof which are under EXTREMEtension.

• Disable ALLlocks and remove ALLropes connected to garage door BEFORE installation and operating garage door opener to avoid entanglement.

To prevent damage to garage door and opener:

• ALWAYS disable locksBEFORE installing and operating the opener.

• ONLY operate garage door opener at 120 V, 60 Hz to avoid malfunction and damage.

Overview/Carton Inventory

GARAGE DOOR OPENER ASSEMBLY

A. tekcarb redaeH B. Pulley and bracket C. tekcarb rooD D. mra rood devruC E. mra rood thgiartS

F. yellorT G. Emergency release rope and handle H. Rail I. renepo rood egaraG

NOTE: Accessories will vary depending on the garage door opener model purchased. Depending on your specific model, other accessories may be included with your garage door opener. The instructions for these accessories will be attached to the accessory and are not included in this manual. The images throughout this manuals are for reference and your product may look different.

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M. eriw etihw/der dna etihW

The Protector System

N. srosnes gnisrever ytefaS

with white and white/black wire attached:

Sending Sensor (1) Receiving Sensor (1) and Safety Sensor Brackets (2)

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Hardware

Assembly

H1 Hex Screw #8x3/8" (3)

[packed with the sprocket cover]

Installation H2 Hex Bolt 5/16"-18 x 7/8" (4)

H3 Lag Screw 5/16"-9 x 1-5/8" (2) H4 Lag Screw 5/16"-18 x 1-5/8" (2) H5 Clevis Pin 5/16" x 2-3/4" (1) H6 Clevis Pin 5/16" x 1-1/4" (1) H7 Clevis Pin 5/16" x 1" (1) H8 Nut 5/16"-18 (4) H9 Lock Washer 5/16"-16 (4) H10 Self-Threading Screw 1/4"-14 x 5/8" (2) H11 Ring Fastener (3) H12 Carriage Bolt 1/4"-20 x 1/2" (2) H13 Wing Nut 1/4"-20 (2)

Door Control Hardware H14 Screw 6AB x 1-1/4" (2)

H15 Screw 6-32 x 1" (2) H16 Drywall Anchors (2) H17 Insulated Staples (10)

895MAX

Remote Control

880LM

Smart Control Panel

829LM

Garage Door Monitor

MyQ™ AND SECURITY✚®2.0 ACCESSORIES

Mounted in the garage door opener

HARDWARE

H1 (3)

Hex Screw #8x3/8" (Packed with the sprocket cover)

Assembly

1 Attach the rail to the garage door opener

NOTE: ONLY use the bolts removed from the garage door opener. Place the garage door

To avoid possible SERIOUS INJURY to finger from moving garage door opener:

• ALWAYS keep hand clear of sprocket while operating opener.

• Securely attach sprocketcover BEFORE operating.

To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the top of the opener.

opener on the packing material to prevent scratching.

1.1 Remove the two bolts from the top of the

garage door opener.

1.2 Align the rail and the styrofoam over the

sprocket. Cutthe tape from the rail, belt, and styrofoam.

1.3 Fasten the rail with the previously removed

bolts.

1.4 Position the belt around the garage door

opener sprocket.

1.5 Attach the sprocketcover over the garage

door opener sprocket and attach with hex screws(H1).

2 Tighten the Belt

Spring Trolley Nut

(To motor unit)

Nut ring slot

Nut Ring

AFTER RELEASE

1-1/4"

(3.18 cm)

BEFORE

(2.5 cm)

2.1 By hand, thread the spring trolley nut on the threaded shaft until it is finger tight against

2.2 Inserta flathead screwdriver tip into one of the nut ring slots and brace it firmly against the trolley.

the trolley. Do not use any tools.

2.3 Tighten the spring trolley nut with an adjustable wrench or a 7/16” open end wrench about a quarter turn until the spring releases and snaps the nut ring against the trolley. This sets the spring to

optimum belt tension.

WARNING

Installation

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of SEVERE INJURY or DEATH:

1. READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS.

2. Install garage door opener only on properly balanced and lubricated garage door. An improperly balanced door may not reverse when required and could result in SEVERE INJURY or DEATH.

3. ALL repairs to cables, spring assemblies and other hardware MUST be made by a trained door systems technician BEFORE installing opener.

4. Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing opener to avoid entanglement.

5. Install garage door opener 7 feet (2.13 m) or more above floor.

6. Mount the emergency release within reach, but at least6 feet (1.83 m) above the floor and avoiding contactwith vehicles to avoid accidental release.

7. NEVER connectgarage door opener to power source until instructed to do so

8. NEVERwear watches,rings or loose clothing while installing or servicing opener. They could be caught in garage door or opener mechanisms.

NOTE:If you are installing the garage door opener on a one-piece door, visit www.liftmaster.com for installation instructions.

9. Install wall-mounted garage door control:

• within sight of the garage door.

• out of reach of children at minimum height of 5 feet(1.5 m).

• away fromALL moving parts of the door.

10. Place entrapment warning label on wall next to garage door control

11. Place manual release/safety reverse test label in plain view on inside of garage door.

12. Upon completion of installation, test safetyreversal system. Door MUST reverse on.contactwith a 1-1/2" (3.8 cm) high object(or a 2x4 laid fl at) on the floor.

13. To avoid SERIOUS PERSONAL INJURY or DEATHfrom electrocution, disconnectALL electric and battery power BEFORE performing any service or maintenance.

14. DO NOT enable the Timer-to-Close functionality if operating either one-piece or swinging garage doors. To be enabled ONLY when operating a sectional door.

1 Determine the header bracket location

Sectional door with curved track

Header Wall

Track

2" (5 cm)

Highest Point of Travel

Door

Header Wall

Unfinished Ceiling

Vertical Centerline of Garage Door

2x4

Structural Supports

Level (Optional)

OPTIONAL CEILING MOUNT FOR HEADER BRACKET

To prevent possible SERIOUS INJURY or DEATH:

• Header bracketMUST be RIGIDLY fastened to structural support on header wall or ceiling, otherwise garage door might NOT reverse when required. DO NOT install header bracketover drywall.

• Concrete anchors MUSTbe used if mounting header bracket or 2x4 into masonry.

• NEVER try to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their hardware, ALL of which are under EXTREME tension.

• ALWAYS call a trained door systems technician if garage door binds, sticks, or is out of balance. An unbalanced garage door might NOT reverse when required.

• DO NOT enable the Timer-to-Close functionality if operating either one-piece or swinging garage doors. To be enabled ONLY when operating a sectional door.

NOTE: If you are installing the garage door opener on a one-piece door, visit www.liftmaster.com for installation instructions.

1.1 Close the door and mark the inside vertical centerline of the garage door.

1.2 Extend the line onto the header wall above the door.

You can fasten the header bracket within4 feet (1.22 m) of the left or right of the door center only if a torsion springor center bearing plate is inthe way; oryoucan attach it to the ceiling when clearance is minimal.(It may be mountedonthe wallupside down if necessary, to gainapproximately 1/2" (1 cm).

Ifyou need to install the header bracketon a 2x4 (on wall or ceiling), use lag screws(not provided) to securely fasten the 2x4 to structural supports.

1.3 Open your door to the highest point of travel as shown.Draw an intersecting horizontal line on

the header wall 2" (5 cm) above the high point. This height will provide travel clearance for the top edge of the door.

NOTE: If the total number of inches exceeds the height available in your garage, use the maximum height possible, or refer to page 8 ceiling installation.

HARDWARE

H3 (2)

Lag Screw 5/16"-9x1-5/8"

CEILING MOUNT ONLY

Wall Mount

Optional Mounting Holes

Vertical Centerline of Garage Door

(Header Wall)

Header Bracket

2x4 Structural Support

Door Spring

(Garage Door)

Highest Point of Garage Door Travel

Horizontal Line

The nail hole is for positioning

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CEILING MOUNT ONLY

(Header Wall)

Ceiling Mounting Holes

(Finished Ceiling)

Vertical Centerline of Garage Door

Header Bracket

6" (15 cm) Maximum

Door Spring

(Garage Door)

The nail hole is for positioning

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Installation

2 Install the Header Bracket

You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow the instructions which will work best for your particular requirements.Donot installthe

header bracket overdrywall. If installing into masonry,use concrete anchors (not provided).

OPTION A WALL INSTALLATION

2.1A Center the bracket on the vertical

centerline with the bottomedge of the bracket on the horizontal line as shown (with the arrow pointing toward the ceiling).

2.2A Mark the vertical set of bracket holes (do

not use the holes designated for ceiling mount). Drill 3/16" pilot holes and fasten the bracketsecurelyto a structural support with the hardware provided (H3).

OPTION B CEILING INSTALLATION

2.1B Extend the vertical centerline onto the

ceiling as shown.

2.2B Center the bracket on the vertical mark,

no more than 6" (15 cm) from the wall. Make sure the arrow is pointing away from the wall. The bracketcan be mounted flush against the ceiling when clearance is minimal.

2.3B Mark the side holes. Drill 3/16" pilot holes

and fasten bracket securely to a structural support with the hardware provided (H3).

H11

HARDWARE

Clevis Pin 5/16"x2-3/4"

H11

Ring Fastener

Connected Disconnected

3 Attach the rail to the header bracket

3.1 Align the rail with the header bracket.

Insertthe clevis pin (H5) through the holes in the header bracketand rail. Secure with the ring fastener (H11).

NOTE: Use the packing material as a protective base for the garage door opener.

4 Position the garage door opener

To prevent damage to garage door, restgarage door opener rail on 2x4 placed on top section of door.

4.1 Remove the packing material and lift the

garage door opener onto a ladder.

NOTE: A 2x4 is ideal for setting the distance between the rail and the door. If the ladder is not tall enough you will need help at this point.

4.2 Fully open the door and place a 2x4 (laid flat) under the rail.

NOTE: If the door hits the trolley when it is raised, pull the trolley release arm down to disconnectthe inner and outer trolley. Slide the outer trolley toward the garage door opener. The trolley can remain disconnected until instructed.

HARDWARE

H4 (2)

Lag Screw 5/16"- 18x1-5/8"

H2 (2)

Hex Bolt 5/16"- 18x7/8"

H8 (2)

Nut 5/16"-18

H9 (2)

Lock Washer 5/16"-16

Finished Ceiling

Unfinished Ceiling

Finished Ceiling

(not provided)

Installation

5 Hang the garage door opener

To avoid possible SERIOUS INJURY from a falling garage door opener, fasten it SECURELY to structural supports of the garage. Concrete anchors MUST be used if installing ANY brackets into masonry.

Hanging the garage door opener will vary depending on your garage. Below are three example installations.Your installation may be different.For ALL installations the garage door opener MUST be connected to structural supports.The instructions illustrate one of the examples below.

5.1 On finished ceilings,use the lag screws

(H3) to attach a support bracket(not provided) to the structural supports before installing the garage door opener.

5.4 Attach the end of each hanging bracketto

the support bracket with appropriate hardware (not provided).

5.2 Make sure the garage door opener is

aligned with the header bracket. Measure the distance from each side of the garage door opener to the support bracket.

5.5 Attach the garage door opener to the

hanging brackets with the bolts (H2), lock washers (H9) and nuts (H8).

5.3 Cut both pieces of the hanging bracket to

required lengths.

5.6 Remove the 2x4 and manually close the

door. Ifthe door hits the rail, raise the header bracket.

or or

Trolley Release Arm

6 Install the light bulbs

To prevent possible OVERHEATING of the end panel or light socket:

• Use ONLY A19 incandescent or compactfluorescent light bulbs.

• DO NOT use incandescentbulbs larger than 100W.

• DO NOT use compact fluorescent light bulbs larger than 26W (100W) equivalent.

• DO NOT use halogen bulbs.

• DO NOT use short neck or specialtylight bulbs.

7 Attach the emergency release rope and handle

To prevent possible SERIOUS INJURY or DEATHfrom a falling garage door:

• Ifpossible, use emergency release handle to disengage trolley ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could resultin an open door falling rapidly and/or unexpectedly.

• NEVER use emergency release handle unless garage doorway is clear of persons and obstructions.

• NEVER use handle to pull door open or closed. If rope knot becomesuntied, you could fall.

6.1 Pull on the top center of the light lens and

rotate the light lens down.

6.2 Insertan A19 incandescent or compact

fluorescentlight bulb (100 wattmaximum), into the light socket.

6.3 Rotate the lens up to close.

NOTE: The use of short neckor specialitylight bulbs mayoverheat the end panel or light socket.

7.1 Insertone end of the emergency release

rope through the handle. Make sure that “NOTICE” is right side up. Tie a knot at least 1 inch (2.5 cm) from the end of the emergency release rope.

7.2 Insertthe other end of the emergency

release rope through the hole in the trolley release arm. Make sure the handle is 6 feet (1.83 m) above the floor and secure with a knot.

NOTE: If it is necessary to cut the emergencyrelease rope, seal the cutend with a match or lighter to prevent unraveling. Ensure the emergency release rope and handle are above the top of all vehicles to avoid entanglement.

H10 (2)

Self-Threading Screw 1/4˝-14x5/8˝

HARDWARE

Door Bracket

Vertical Centerline of Garage Door

Vertical Reinforcement

FIGURE 2

H10

Vertical Centerline of Garage Door

FIGURE 4

FIGURE 1

Door Bracket

Nut 5/16"-18

Bolt 5/16"-18x2" (Not Provided)

Lock Washer 5/16"

Vertical Reinforcement

FIGURE 3

Vertical Centerline of Garage Door

Inside Edge of Door or Reinforcement Board

Bolt 5/16"x2" (Not Provided)

FIGURE 5

Vertical Centerline of Garage Door

Installation

8 Install the door bracket

Fiberglass,aluminum or lightweight steel garage doors WILLREQUIRE reinforcementBEFORE installation of door bracket.Contact your door manufacturer for reinforcement kit.

Figure 1 shows one piece of angle iron as the horizontal brace. For the vertical brace, 2 pieces of angle iron are used to create a U-shaped support. The best solution is to checkwith your garage door manufacturer for an opener installation door reinforcementkit.

NOTE: Many door reinforcement kitsprovide for direct attachment of the clevispin and door arm. In thiscase you will not need the door bracket;proceed to the next step.

8.1 Center the door bracket on the previously marked vertical centerline used for the header bracket

installation.Note correct UP placement, as stamped inside the bracket.

8.2 Position the top edge of the bracket 2"-4" (5-10 cm) below the top edge of the door, OR directlybelow

any structural support across the top of the door.

8.3 Mark,drill holes and install as follows, depending on your door’s construction:

Metal or light weight doors usinga vertical angle ironbrace between the doorpanelsupport and the door bracket:

• Drill 3/16" fastening holes. Secure the door bracketusing the two self threading screws(H10). (Figure 2)

• Alternately,use two 5/16" bolts, lock washers and nuts (not provided). (Figure 3)

Metal,insulated orlight weightfactory reinforced doors:

• Drill 3/16" fastening holes. Secure the door bracketusing the self-threading screws(H10). (Figure 4)

NOTE: The 1/4"-14x5/8" self-threading screwsare not intended for use on wood doors.

Wood Doors:

• Use top and bottomor side to side door bracketholes. Drill 5/16” holes through the door and secure bracketwith 5/16"x2" carriage bolts, lock washers and nuts(not provided). (Figure 5)

A horizontal and vertical reinforcement is needed for lightweight garage doors (fiberglass, aluminum, steel, doors with glass panel,etc.) (not provided). A horizontal reinforcement brace should be long enough to be securedto two or three vertical supports. A vertical reinforcement brace shouldcover the height of the top panel.

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