LiftMaster 8550 User Manual

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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.

J. swercs dna revoc tekcorpS K. tleB L. lortnoc rooD

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)

O. erutaretil dna slebal ytefaS

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.

Straight Door Arm

Curved Door Arm

(Groove facing out)

CORRECT

INCORRECT

Straight Door Arm

Curved Door Arm

H11

HARDWARE

H2 (2)

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

H8 (2)

Nut 5/16"-18

H9 (2)

Lock Washer

5/16" -16

Clevis Pin 5/16"x1"

Clevis Pin 5/16"x1-1/4"

H11 (2)

Ring Fastener

If the straight door arm is hanging down too far, you may cut 6 inches (15 cm) from the solid end.

Trolley release arm

9 Connect the door arm to the trolley

IMPORTANT: The groove on the straight door arm MUST face away from the curved door arm.

9.1 Close the door. Disconnectthe trolley by

pulling the emergency release handle. Slide the outer trolley back (away from the door) about 2" (5 cm).

9.4 Align the straight door arm with the

curved door arm.Select two aligned holes (as far apart as possible) and attach using the bolts (H2), nuts(H8) and lock washers (H9).

9.2 Attach the straight door arm to the outer

trolley using the clevispin (H7).Attach with the ring fastener (H11).

NOTE: If the holes do not line up, reverse the straight door arm. Selecttwo aligned holes (as far apart as possible) and attach using the bolts (H2), nuts (H8) and lock washers (H9).

9.3 Attach the curved door arm to the door

bracket using the clevis pin (H6). Attach with the ring fastener (H11).

9.5 Pull the emergency release handle

toward the garage door opener until the trolley release arm is horizontal. The trolley will re-engage automatically when the garage door opener is activated.

Install the Door Control

H14 (2)

Screw 6ABx1-1/4"

HARDWARE

H16 (2)

Drywall Anchors

H15 (2)

Screw 6-32x1"

7/16" (11 mm)

Wall

H15

DRYWALL

GANG BOX

H14

H16

1 Install the door control

INTRODUCTION

Compatible with MyQ™ and Security+®2.0

To prevent possible SERIOUS INJURY or DEATHfrom electrocution:

• Be sure power is NOT connected BEFORE installing door control.

• Connect ONLY to 24 VOLT low voltage wires. To prevent possible SERIOUS INJURY or DEATHfrom a closing garage door:

• Install door control within sight of garage door, out of reach of children at a minimum height of 5 feet (1.5 m), and away from ALL moving parts of door.

• NEVER permit children to operate or play with door control push buttons or remote control transmitters.

• Activate door ONLY when it can be seen clearly, is properly adjusted, and there are no obstructions to door travel.

• ALWAYS keep garage door in sight until completelyclosed. NEVER permit anyone to cross path of closing garage door.

NOTE: For gang box installations it is not necessary to drill holes or install the drywall anchors.Use the existing holes in the gang box.

1.1 Strip 7/16 inch (11 mm) of insulation from

one end of the wire and separate the wires.

1.2 Connect one wire to each of the two screws

on the back of the door control.The wires can be connected to either screw.

PRE-WIREDINSTALLATIONS:Choose any two wires to connect, note which wires are used so the correctwires are connected at the garage door opener in a later step.

accessories. NOTE:Older LiftMaster

accessories and third partyproducts are not compatible.Your garage door opener is

compatible with up to 2 Smart Control Panels or 4 of any other Security+®2.0 door controls. Install the door control within sight of the door at a minimumheight of 5 feet (1.5 m) where small children cannot reach,and away from the moving partsof the door.

NOTE: Your product may look different than moving partsof the door the illustrations.

1.3 Mark the location of the bottom mounting

hole and drill a 5/32 inch (4 mm) hole.

1.4 Install the bottomscrew, allowing 1/8 inch

(3 mm) to protrude fromthe wall.

Install the Door Control

DRYWALL

H14

H16

H15

GANG BOX

HARDWARE

H17 (10)

Insulated Staple

H17

7/16" (11 mm)

RED

WHITE

GREY

1.5 Position the bottom hole of the door

1.6 Lift the push bar up and mark the top hole. 1.7 Remove the door control from the wall

control over the screw and slide down into place.

2 Wire the door control to the garage door opener

2.1

Run the white and red/white wire from the door control to

the garage door opener. Attach the wire to the wall and ceiling with the staples (H17) (not applicable for gang box

or pre-wired installations).Do not pierce the wire with the

staple as this may cause a short or an open circuit.

PRE-WIRED INSTALLATIONS: When wiring

the door control to the garage door opener make sure you use the same wires thatare connected to the door control.

and drill a 5/32 inch (4 mm) hole for the top screw.

2.2

Strip 7/16 inch (11 mm) of insulation

from the end of the wire near the garage door opener.

door control over the screw and slide down into place. Attach the top screw.

2.3

Connect the wire to the red and

white terminals on the garage door opener. To insertor release wires from the terminal, push in the tab with screwdriver tip.

1.8 Position the bottom hole of the

Install the Door Control

3 Attach the warning labels

3.1 Attach the entrapment warning label on the wall near the door control with tacksor

staples.

3.2 Attach the manual release/safety reverse testlabel in a visible location on the inside of

the garage door.

Install the Protector System

Invisible Light Beam Protection Area

Safety Reversing Sensor 6" (15 cm) max. above floor

Introduction

Be sure power is NOT connected to the garage door opener BEFORE installing the safety reversing sensor. To prevent SERIOUS INJURY or DEATH from closing garage door:

• Correctlyconnectand align the safety reversing sensor.This required safety device MUST NOT be disabled.

• Install the safety reversing sensor so beam is NO HIGHERthan 6" (15 cm) above garage floor.

IMPORTANTINFORMATIONABOUTTHESAFETYREVERSINGSENSORS The safety reversing sensors must be connected and aligned correctly before the garage dooropener will move in the down direction.

The sending sensor (with an amber LED) transmits an invisible light beam to the receiving sensor (with a green LED). If an obstruction breaks the light beam while the door is closing, the door will stop and reverse to the full open position,and the garage door opener lightswill flash 10 times.

NOTE: For energy efficiency the garage door opener will enter sleep mode when the door is fully closed. The sleep mode shuts the garage door opener down until activated. The sleep mode is sequenced with the garage door opener light bulb; as the light bulb turns off the sensor LEDswill turn off and whenever the garage door opener lights turn on the sensor LEDs will light. The garage door opener will not go into the sleep mode until the garage door opener has completed 5 cycles upon power up.

When installing the safety reversing sensors checkthe following:

• Sensorsare installed inside the garage, one on either side of the door.

• Sensorsare facing each other with the lenses aligned and the receiving sensor lens does not receive direct sunlight.

• Sensorsare no more than 6 inches (15 cm) above the floor and the light beam is unobstructed.

Install the Protector System

HARDWARE

H12 (2)

Carriage Bolt 1/4"-20x1/2"

H13 (2)

Wing Nut 1/4"-20

H12

H13

(not provided)

side

rage

Wal

(not provided)

H12

Lens

H13

1 Install the Safety Reversing Sensors

The safety reversing sensors can be attached to the door track,the wall, or the floor. If the door track will not support the sensor bracket a wall installation is recommended. Choose one of the following installations.

OPTION A

1.1A Slide the curved arms of the sensor

OPTION B WALLINSTALLATION

Ifadditional clearance is needed an extension bracket(not provided) or wood blocks can be used. Make sure each bracket has the same amount of clearance so they will align correctly.

1.1B Position the sensor bracket againstthe

wall with the curved arms facing the door. Make sure there is enough clearance for the beam to be unobstructed.Mark holes.

1.2B Drill 3/16 inch pilot holes for each

DOOR TRACK INSTALLATION

bracket around the edge of the door track. Snap into place so that the sensor bracketis flush againstthe track.

sensor bracketand attach the sensor bracketsto the wall using lag screws (not provided).

1.2A Slide the carriage bolt (H12) into the

slot on each sensor.

1.3B Slide the carriage bolt (H12) into the

slot on each sensor.

1.3A Insert the bolt through the hole in the sensor

bracket and attach with the wing nut (H13). The lenses on both sensors should point toward each other. Make sure the lens is not obstructed by the sensor bracket.

1.4B

Insertthe bolt through the hole in the sensor bracket and attach with the wing nut (H13). The lenses on both sensors should point toward each other. Make sure the lens is not obstructed by the sensor bracket.

Install the Protector System

Insi

Garage Wa

(not provided)

H12

H13

HARDWARE

H17 (10)

Insulated Staple

H17

7/16" (11 mm)

RED

WHITE

GREY

1 Install the Safety Reversing Sensors

OPTION C

FLOOR INSTALLATION

Use an extension bracket(not provided) or wood black to raise the sensor bracket if needed.

1.1C Carefully measure the position of both

sensor brackets so they will be the same distance from the wall and unobstructed.

1.2C

Attach the sensor brackets to the floor using concrete anchors (not provided).

2 Wire the Safety Reversing

Sensors

PRE-WIRED INSTALLATIONS: If your garage

already has wires installed for the safety reversing sensors, refer to the instructions on the following page.

OPTION A

2.1A Run the wire from both sensors to the

INSTALLATION WITHOUT PRE-WIRING

garage door opener. Attach the wire to the wall and ceiling with the staples (H17).

1.3C

Slide the carriage bolt (H12) into the slot on each sensor.

2.2A Strip 7/16 inch (11 mm) of insulation

from each set of wires. Separate the wires.Twist the white wires together. Twist the white/black wires together.

1.4C

Insertthe bolt through the hole in the sensor bracket and attach with the wing nut (H13). The lens on both sensors should point toward each other. Make sure the lens is not obstructed by the sensor bracket.

2.3A Insert the white wires into the white terminal on

the garage door opener. Insertthe white/black wires into the grey terminal on the garage door opener. To insert or remove the wires from the terminal, push in the tab with a screwdriver tip.

Install the Protector System

7/16" (11 mm)

Safety reversing sensor wires

Pre-installed wires

White

White/Black

Yellow (for example)

Purple (for example)

Not Provided

Pre-installed wires

Safety reversing sensor wires

7/16" (11 mm)

Yellow

Purple

RED

WHITE

GREY

Purple (for example)

Yellow

(for example)

To insert or remove the wires from the terminal, push in the tab with a screwdriver tip.

OPTION B PRE-WIRED INSTALLATION

2.1B Cut the end of the safety

reversing sensor wire, making sure there is enough wire to reach the pre-installed wires

2.2B Separate the safetyreversing sensor wires and strip 7/16 inch (11 mm) of

insulation fromeach end. Choose two of the pre-installed wires and strip 7/16 inch (11 mm)of insulation from each end. Make sure that you choose the same color pre-installed wires for each sensor.

from the wall.

2.4B At the garage door opener, strip 7/16 inch (11 mm)of insulation from each end of the wires previously chosen for the

safety reversing sensors. Twistthe like-colored wirestogether.

2.3B Connectthe pre-installed wires to the sensor wires with wire nuts

making sure the colors correspond for each sensor. For example, the white wire would connect to the yellow wire and the white/black wire would connect to the purple wire.

2.5B Insert the wires connected to the white safetysensor wires to the

white terminal on the garage door opener. Insertthe wires thatare connected to the white/black safetysensor wires to the grey terminal on the garage door opener.

Ground Tab

Green Ground Screw

Ground Wire

Black Wire

White Wire

PERMANENT WIRING CONNECTION

Wire Nuts

Power

1 Connect Power

To prevent possible SERIOUS INJURY or DEATH from electrocution or fire:

• Be sure power is NOT connected to the opener, and disconnectpower to circuit BEFORE removing cover to establish permanent wiring connection.

• Garage door installation and wiring MUST be in compliance with ALL local electrical and building codes.

• NEVER use an extension cord, 2-wire adapter, or change plug in any way to make it fit outlet. Be sure the opener is grounded.

To avoid installation difficulties, do not activate the garage door openerat this time.

To reduce the risk of electricshock, your garage door opener has a grounding type plug with a third grounding pin. This plug will only fit into a grounding type outlet.If the plug doesn’t fitinto your outlet, contacta qualified electrician to install the proper outlet.

THERE ARE TWO OPTIONS FOR CONNECTIONPOWER:

OPTION A

TYPICAL WIRING

1.1A Plug in the garage door opener into a grounded outlet.

1.2A DO NOTrun garage door opener at this time.

OPTION B

Ifpermanent wiring is required by your local code, refer to the following procedure. To make a permanent connection through the 7/8" hole in the top of the motor unit (according to local code):

PERMANENT WIRING

1.1B Be sure power is NOT connected to the opener, and disconnectpower to circuit.

1.2B Remove the garage door opener cover and set aside.

1.3B Remove the attached green ground terminal.

1.4B Cut black and white wires and strip away 1/2" (1 cm) of insulation, 3" (7.5 cm) before spade

terminals.

1.5B Remove the power cord from opener.

1.6B Install a conduit or flex cable adapter to the 7/8" hole.

1.7B Run wiresthrough conduit, cut to proper length and strip insulation.

1.8B Attach with wire nuts provided. Attachthe ground wire to the green ground screw.The opener

mustbe grounded.

1.9B Properly secure wire under plasticties so that wire does not come in contact withmoving parts.

1.10B Reinstall the cover.DO NOT run garage door opener at this time.

Green LED

ROSNES GNIVIECERROSNES GNIDNES

Amber LED

If the receiving sensor is in direct sunlight, switch it with sending sensor so it is on the opposite side of the door.

(invisible light beam)

Make sure there is power to the garage door opener.

Make sure the sensor wire is not shorted/broken.

RED

WHITE

GREY

Make sure the sensor has been wired correctly: white wires to white terminal and white/black wires to grey terminal.

Make sure the sensors are aligned.Make sure the sensor wire is

not shorted/broken.

Power

2 Ensure the Safety Reversing Sensors are aligned

The doorwillnot close if the sensors have not been installed andaligned correctly.

When the light beam is obstructed or misaligned while the door is closing, the door will reverse and the garage door opener lights will flash ten times. Ifthe door is already open, it will not close. The sensorscan be aligned by loosening the wing nuts,aligning the sensors,and tightening the wing nuts.

IFTHE AMBER LED ON THE SENDING SENSOR IS NOT GLOWING: IFTHE GREEN LED ON THE RECEIVING SENSOR IS NOT GLOWING:

2.1 Check to make sure the LEDs in both sensors are glowing steadily. The LEDs in both sensors will glow steadily if they are aligned and

wired correctly.

3 Ensure the Door Control is wired correctly

Ifthe door control has been installed and wired correctly a message will display on the screen.

UP (Open)

DOWN (Close)

UP Button

Adjustment Button

DOWN Button

PROGRAMMING BUTTONS

Adjustments

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

• Incorrectadjustmentof garage door travel limitswill interfere with proper operation of safety reversal system.

• After ANY adjustmentsare made, the safety reversal systemMUSTbe tested. Door MUSTreverse on contact with 1-1/2" (3.8 cm) high object (or 2x4 laid flat) on floor.

INTRODUCTION

Your garage door opener is designed with electronic controls to make setup and adjustmentseasy.The adjustmentsallow you to program where the door will stop in the open (UP) and close (DOWN) position. The electronic controls sense the amount of force required to open and close the door. The force is adjusted automatically when you program the travel and cannot be changed.

PROGRAMMING BUTTONS

To prevent damage to vehicles, be sure fully open door provides adequate clearance.

TIP: Ifanything interfereswith the door’s

upward travel it will stop. If anything interferes with the door’s downward travel, it will reverse.

The programming buttonsare located on the left side panel of the garage door opener and are used to program the travel.

Adjustments

1 Program the

Travel

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

• Incorrect adjustment of garage door travel limits will interfere with proper operation of safetyreversal system.

• ANYadjustmentsare made, the safety reversal system MUST be tested. Door MUSTreverse on contact with 1-1/2" (3.8 cm)high object (or 2x4 laid flat) on floor.

1.1 Press and hold the

AdjustmentButton until the UP Button begins to flash and/or a beep is heard.

1.5 Once the door is in the

desired DOWNposition press and release the AdjustmentButton. The garage door opener lights will fl ash twice and the UP Button will begin to flash.

1.2 Press and hold the UP Button until the door is in

the desired UP position.

NOTE: The UPand DOWNButtons can be used to move the door up and down as needed.

1.6 Press and release the UP Button.When the

door travels to the programmed UP position, the

DOWN Button will begin to flash.

1.3 Once the door is in the desired UP position

press and release the Adjustment Button. The garage door opener lights will flash twice and the DOWN Button will begin to flash.

1.7 Press and release the DOWN Button. The door

will travel to the programmed DOWN position. Programming is complete.

1.4 Press and hold the DOWN Button until the door

is in the desired DOWNposition.

NOTE: The UPand DOWNButtons can be used to move the door up and down as needed.

Ifthe garage door opener lightsare flashing 5 timesduring the steps for Program the Travel, the programming has timed out. If the garage door opener lights are flashing 10 times during the steps for Program the Travel, the safety reversing sensors are misaligned or obstructed (refer to page 18). When the sensors are aligned and unobstructed,cycle the door through a complete up and down cycle using the remote control or the UP and DOWNbuttons.Programming is complete. Ifyou are unable to operate the door up and door, repeat the steps for Programming the Travel.

Adjustments

2 Test the Safety Reversal System

Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

• Safetyreversal systemMUSTbe tested every month.

• After ANY adjustmentsare made, the safety reversal systemMUSTbe tested. Door MUST reverse on contact with 1-1/2" high (3.8 cm) object (or 2x4 laid flat) on the floor.

3 Test the Protector System

Without a properly installed safety reversing sensor, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door.

2.1 With the door fully open, place a 1-1/2

inch (3.8 cm) board (or a 2x4 laid flat) on the floor, centered under the garage door.

3.1 Open the door. Place the garage door

opener carton in the path of the door.

2.2 Press the remote control push button to

close the door. The door MUST reverse when it makes contactwith the board.

3.2 Press the remote control push button to

close the door. The door will not move more than an inch (2.5 cm), and the garage door opener lights will flash 10 times.

Ifthe door stops and does not reverse on the obstruction, the travel need to be adjusted (refer to AdjustmentStep 1).

Repeat the test. When the door reverses upon contactwith the 1-1/2 inch board, remove the board and open/close the door 3 or 4 times to testthe adjustment.

Ifthe test continues to fail, call a trained door systems technician.

The garage door opener will not close from a remote control if the LED in either safety reversing sensor is off(alerting you to the factthatthe sensor is misaligned or obstructed).

Ifthe garage door opener closes the door when the safetyreversing sensor is obstructed (and the sensors are no more than 6 inches [15 cm] above the floor), call for a trained door systems technician.

Channel

Battery

Status LED

Battery Backup

To reduce the risk of FIRE or INJURY to persons:

• DisconnectALL electric and battery power BEFORE performing ANY service or maintenance.

• Use ONLY LiftMaster part # 485LM for replacement battery.

• Do NOT dispose of batteryin fire.Battery may explode. Check with local codes for disposal instructions.

1 Install the battery

1.1 Unplug the garage door opener.

1.2 Open the light lens on the right side panel of the garage door opener. Usea Phillips

head screwdriver to remove the batterycover on the garage door opener.

1.3 Partially insert the batteryinto the battery compartmentwith the terminals facing out.

1.4 Connect red (+) and black (-) wires from the garage door opener to the

corresponding terminals on the battery.

1.5 Verify the battery wires are seated in the channel and replace the battery cover.

1.6 Plug in the garage door opener.

1.7 Wait for the green BatteryStatusLED to startflashing before proceeding to test the

battery.

2 Test the battery

ALWAYS wear protective gloves and eye protection when changing the batteryor working around the batterycompartment.

2.1

Unplug the garage door

opener. The battery statusLED will either glow solid orange indicating opener is operating on batterypower or will flash indicating low battery power.

NOTE: Make sure the garage door opener is unplugged.

2.2

Open and close the door using the

remote control or door control.

NOTE: The garage door opener may run slower if the battery is not fully charged. The battery will take 24 hours to fully charge.

2.3 Plug in the garage door opener. Verify

the battery statusLED flashing green, indicating the battery is charging.

Battery Status LED

Battery Backup

BATTERY STATUS LED

NOTE: The Battery Status LED is most visible with the garage door opener light off. Battery does not have to be fully charged to operate the garage door opener.

GREEN LED:

All systems are normal.

• A solid green LED light indicates the batteryis fully charged.

• A flashing green LED indicatesthe battery is being charged.

ORANGE LED:

The garage door opener has lost power and is in batterybackup mode.

• A solid orange LED with beep, sounding approximately every 2 seconds, indicates the garage door opener is operating on batterypower.

• A flashing orange LED with beep, sounding every 30 seconds, indicates the batteryis low.

RED LED:

The garage door opener's 12V batteryneeds to be replaced.

• A solid red LED with beep, sounding every 30 seconds,indicatesthe 12V batterywill no longer hold a charge and needs to be replaced. Please call for replacement batteryto allow your system to operate during a power outage.

CHARGE THE BATTERY

The battery will take 24 hours to fully charge. A fully charged battery supplies 12V DC to the garage door opener for one to two days of normal operation during an electrical power outage. Once the batteryvoltage drops too low, the batterywill no longer operate. After the electrical power has been restored,the batterywill recharge within 24 hours. The battery will last1 to 2 years with normal usage. To obtain maximum battery life and prevent damage, disconnect the battery when the garage door opener is unplugged for an extended period of time.

NOTE: Door operation may be limited until the battery is fully charged. The garage door opener lights will not turn on during battery backup mode.

WARNING

Operation

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of SEVERE INJURY or DEATH:

1. READ AND FOLLOW ALL WARNINGS AND INSTRUCTIONS.

2. ALWAYS keep remote controls out of reach of children. NEVER permit children to operate or play with garage door control push buttons or remote controls.

3. ONLY activate garage door when it can be seen clearly,it is properly adjusted,and there are no obstructions to door travel.

4. ALWAYS keep garage door in sight until completelyclosed.

5. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. NO ONE SHOULDGO UNDER A STOPPED, PARTIALLY OPENED DOOR.

6. 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.

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

8. NEVER use handle to pull garage door open or closed. If rope knot becomes untied, you could fall.

9. After ANY adjustmentsare made, the safety reversal system MUSTbe tested.

10. Safety reversal system MUSTbe tested every month. Garage door MUST reverse on contactwith 1-1/2" high (3.8 cm) object (or a 2x4 laid flat) on the floor.

11. ALWAYS KEEP GARAGE DOOR PROPERLY BALANCED (see page 2). An improperly balanced door may NOT reverse when required and could resultin SEVERE INJURY or DEATH.

12. ALL repairs to cables,spring assemblies and other hardware, ALL of which are under EXTREME tension, MUST be made by a trained door systems technician.

13. ALWAYS disconnect electric power to garage door opener BEFORE making ANY repairs or removing covers.

14. This operator system is equipped with an unattended operation feature.The door could move unexpectedly.NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.

15. 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.

16. SAVE THESE INSTRUCTIONS.

Features

Your garage door opener is equipped with features to provide you with greater control over your garage door operation.

TIMER-TO-CLOSE

The Timer-to-Close feature automaticallycloses the door after a specified time period that can be adjusted using the door control. Prior to the door closing there will be an audible and visual alert.

MyQ™

MyQ™ technology uses a 900MHz signal to provide two-way communication between the garage door opener and MyQ™ accessories. Your garage door opener is compatible with up to 16 MyQ™ accessories.

SECURITY+®2.0 REMOTE CONTROLS AND DOOR CONTROLS

Your garage door opener is compatible with up to 2 Smart Control Panels or 4 of any other Security+®2.0 door controls. Your garage door opener has already been programmed at the factory to operate with your remote control, which changes with each use,randomly accessing over 100 billion new codes. The garage door opener is compatible with up to 40 remote controls.

THE PROTECTOR SYSTEM®(SAFETY REVERSING SENSORS)

When properly connected and aligned, the safety reversing sensors will detect an obstruction in the path of the infrared beam. If an obstruction breaks the infrared beam while the door is closing, the door will stop and reverse to full open position,and the opener lights will flash 10 times.If the door is fully open, and the safetyreversing sensorsare not installed, or are misaligned, the door will not close from a remote control. However, you can close the door if you hold the button on the door control or keyless entry until the door is fully closed. The safetyreversing sensors do no effect the opening cycle.

ENERGY CONSERVATION

For energy efficiency the garage door opener will enter sleep mode when the door is fully closed. The sleep mode shuts the garage door opener down until activated.The sleep mode is sequenced with the garage door opener light bulb; as the light bulb turns off the sensor LEDs will turn off and whenever the garage door opener lights turn on the sensor LEDs will light.The garage door opener will not go into the sleep mode until the garage door opener has completed 5 cyclesupon power up.

LIGHTS

The garage door opener light bulbs will turn on when the opener is initially plugged in; power is restored after interruption, or when the garage door opener is activated.The lights will turn off automatically after 4-1/2 minutes. An incandescent A19 light bulb (100 wattmaximum) or for maximum energy efficiency a 26W (100W equivalent) compact fluorescent light (CFL) bulb may be used.

LIGHTS FEATURE

The garage door opener is equipped with an added feature; the lights will turn on when someone enters through the open garage door and the safetyreversing sensor infrared beam is broken. For added control over the light bulbs on your garage door opener, see the Door Control section.

USING YOUR GARAGE DOOR OPENER

The garage door opener can be activated through a wall-mounted door control,remote control, wireless keylessentry or MyQ™ accessory.

When the door is closed and the garage door opener is activated the door will open. If the door senses an obstruction or is interrupted while opening the door will stop.When the door is in any position other than closed and the garage door opener is activated the door will close. If the garage door opener senses an obstruction while closing, the door will reverse.Ifthe obstruction interruptsthe sensor beam the garage door opener lights will blink 10 times. However,you can close the door if you hold the button on the door control or keylessentry until the door is fully closed. The safetyreversing sensors do no effect the opening cycle.

The safety reversing sensor must be connected and aligned correctlybefore the garage door opener will move in the down direction.

Push Bar

LIGHT button

Screen

Motion Sensor

Navigation Buttons

Door Control

USING THE DOOR CONTROL

SYNCHRONIZETHEDOORCONTROL

To synchronize the door control to the garage door opener, press the push bar until the garage door opener activates(it may take up to 3 presses).Testthe door control by pressing the push bar, each press of the push bar will activate the garage door opener.

PUSH BAR

Press the push bar to open or close the door.

NAVIGATION BUTTONS

Use the navigation buttons to make selections and program features.

LIGHT BUTTON

Press the LIGHTbutton to turn the garage door opener lights on or off.When the lightsare turned on they will stay on until the LIGHT button is pressed again, or until the garage door opener is activated. Once the garage door opener is activated the lights will turn offafter the specified period of time (the factory setting is 4-1/2 minutes). The LIGHT button will not control the lights when the door is in motion. The duration of the light timing can be adjusted by accessing the menu using the navigation buttons.

HOLDOPEN

To temporarily suspend the Timer-To-Close (TTC) feature press and release the HOLDOPENbutton (the HOLDOPENbutton will light solid). Press the HOLDOPENbutton again to resume normal TTCoperation.

SCREEN

The screen will display the timeand temperature until the menu button is pressed,and then it will display the menu options.Ifthere is a problem with the garage door opener the screen will display the DiagnosticCode. Refer to the Troubleshooting section.

The following features are accessible through the screen using the navigationbuttons:

LEARN A DEVICE

Any compatible remote controls, wireless keyless entry,or MyQ™ accessories can be programmed to the garage door opener by accessing the menu and using the navigation buttons.

LOCK

The LOCK feature is designed to prevent activation of the garage door opener from remote controls while still allowing activation from the door control and keylessentry.This feature is useful for added peace of mind when the home is empty (i.e.vacation).

TIMER-TO-CLOSE (TTC) (881LMONLY)

DO NOT enable TTCif operating a one-piece door. TTC is to be used ONLY with sectional doors. Factory default is set to off. TTCcan be set to automatically close your garage door from the fully open position after a specified period of time (1, 5, 10 minute intervals or a custom setting up to 99 minutes). The garage door opener will beep and the lightswill flash before closing the door. The screen on the door control can display the statusof the TTC. TTC WILL NOT workif the garage door opener is operating by battery power or if the safety reversing sensors are misaligned. This feature is NOT intended to be the primary method of closing the door. A keyless entry should be installedinthe

event of an accidentallock out when using this feature.

NOTE: Before enabling the TTC for the first time, or if you experience a power outage, cycle the garage door opener open and closed to allow the TTCto set.

AUTOMATIC LIGHT

Motion Sensor

Factory default is set to on. This feature will automatically turn on the garage door opener lights when motion is sensed. The lights will come on for the set period of time, then shutoff. The lights will turn on when someone enters through the open garage door and the safety reversing sensor infrared beam is broken. If using the garage door opener light as a work light disable the AutomaticLight Feature,otherwise the light will turn offautomatically if you are beyond the range of the sensor.

MAINTENANCE ALERT (MAS)

This feature assists the homeowner in ensuring the garage door opener system stays in good working condition. A maintenance alert message will display on the screen indicating the garage door opener may be in need of maintenance.The MAS feature MUSTbe activated at time of installation. The factory setting is off.

Navigation Buttons

Door Control

MENU NAVIGATION

The features on the door control can be programmed through a series of menus on the screen and the navigation buttons.Refer to the descriptions below.

SCREEN

The main screen displaysthe time, temperature, and current battery charge (if applicable).

To program a remote control or keyless entry to the garage door opener using the door control see page 32.

FEATURES

Press the navigation button below "MENU"to view the Features menu.

CLOCKSETUP: Set the time, choose 12 or 24 hour clockand show/hide clock.

TTCSETTINGS (for sectional doors ONLY):

Set the Timer-to-Close feature off/on and set the time interval before door closes. NOTE: DO NOT

enable TTC if operating a one-piece door. TTC is to be used ONLY with sectional doors.

LOCK: Enable/disable lock.

PROGRAM: Add remote controls, MyQ™ devices,

an extra remote button to control your garage door opener lights, or a keylessentry.

SETTINGS

Press the navigation button below the down arrow till you see TEMPERATURE to view the Settings menu.

TEMPERATURE: Displaythe temperature in Fahrenheit or Celsiusand show/hide the temperature.

LANGUAGE: Select a language.

LIGHT SETTINGS: Set duration for garage door

opener light to stay on after operation, selectable range of 1-1/2 to 4-1/2 minutes. Turn the Motion sensor off/on, and turn the entry light feature off/on.

CONTRAST: Adjustthe contrast of the screen.

SERVICE

Press and hold the second navigation button, then press the LIGHTbutton to view the Service menu.

SOFTWARE REVISION: Displays software version information.

CYCLE COUNTON/OFF: Turn the Maintenance Alert (MAS) on/off.

TRANSMITTERS: Displays the number of remote controls,MyQ™ devices, door controls and keyless entries currently programmed to operate the garage door opener.

DISPLAYERROR:Displaysany errors that have occurred.

press

to continue.

TO REMOTE

press

to continue.

? ? ? ?

DEF

GHI

JKL

MNO

TUV

WXY

0 QZ

ENTER

Learn

DEL

Yellow

Program Button

Remote Controls

Your garage door opener has been programmed at the factory to operate with your remote control.To program additional remote controls refer to the instructions provided with the additional remote controls or visitwww.liftmaster.com.

TO ADD, REPROGRAM,OR CHANGE A REMOTE CONTROL/KEYLESS ENTRY PIN USING THE DOOR CONTROL

1 Press the navigation button

below "MENU" to view the Features menu.

PROGRAM A REMOTE CONTROL USING THE LEARN BUTTON

2 Use the navigation buttons

to scroll to "PROGRAM".

1 Locate the Learn button on the garage door opener. NOTE:Your garage

door opener may look different.

3 Select "REMOTE"or

"KEYPAD" to program from the program menu.

4 Remote Control:

Press the button on the remote control that you wish to operate your garage door.

Keyless Entry:

Enter a 4-digit personal identification number (PIN) of your choice on the keyless entry keypad. Then press the ENTERbutton.

The garage door opener lightswill flash (or two clickswill be heard) when the code has been programmed.

Repeat the stepsabove for programming additional remote controls or keylessentry devices.Ifprogramming is unsuccessful, program the remote using the learn button.

Locate the Program Button on the side of the remote control.

Remote Controls

3 Using a safetypin or paper clip, press the

program button until the LEDs on the front of the remote control turn on.

4 Press and release the Learn button on the

garage door opener. The Learn LEDwill light. Within 30 seconds...

6 To exitprogramming mode, pressany remote control button except the button that was just

programmed.

To Erase the Memory

5 Press and release the remote control button you want to use...

Checkto see if the garage door opener light bulb blinks.Ifnot,wait for the remote control LEDto light solid then slowly press and release the remote control button again.

Repeat until the light bulb blinks.DONOTpressthe button after the light bulb blinks.

7 To test, press the programmed button on the remote control... The garage door opener will

activate.

ERASE ALL REMOTE CONTROLS AND KEYLESS ENTRIES

1 Press and hold the learn button on garage door opener until the learn LED goes out

(approximately 6 seconds). All remote control and keylessentry codes are now erased.

Reprogram any accessoryyou wish to use.

ERASE ALL DEVICES

1 Press and hold the learn button on garage door opener until the learn LED goes out

(approximately 6 seconds).

2 Immediatelypress and hold the learn button again until the learn LED goes out.All codes are

now erased.

Reprogram any accessoryyou wish to use.

NOTICE

Batteries

Screws (2)

To Open the Door Manually

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

• 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.

Maintenance

EVERY MONTH

• Manually operate door. If it is unbalanced or binding, call a trained door systems technician. Check to be sure door opens and closesfully.Adjust if necessary (refer to Adjustment section). Repeat the safety reverse test.Make any necessaryadjustments(refer to Adjustment section).

EVERY YEAR

• Oil door rollers, bearings and hinges. The garage door opener does not require additional lubrication. Do not grease the door tracks.

EVERY TWO TO THREE YEARS

• Use a rag to wipe away the existing grease from the garage door opener rail. Reapply a small layer of white lithium grease to the top and underside of the rail surface where the trolley slides.

• Testthe battery and consider replacing the battery to ensure the garage door opener will operate during an electrical power outage.

NOTICE To complywith FCC a nd or Ind ustryC ana da rules(IC), adjustment or modifications of this receiveran d/or transmittera re prohibited , except fo rchanging the cod e setting o rre placing the b atte ryTHEREARENOOTHERUSERSERVICEABLEPARTS.

Tested t o Comply with FC CSta nda rds fo rHome or office use. Operat ion is subject to the following tow con ditions: (1)th is device mayn ot cause ha rmful interfa ce, and (2) th isdevice must accept an yinte rference received, including interference th at may cause und esired ope ration.

DISCONNECT THE TROLLEY

1 The door should be fullyclosed if possible. 2 Pull down on the emergencyrelease handle.

RECONNECTTHE TROLLEY

The lockoutfeature prevents the trolley from reconnecting automatically.

1 Pull the emergencyrelease handle down and back (toward the

opener). The door can then be raised and lowered manually as often as necessary.

2 To disengage the lockout feature, pull the handle straight down.

The trolley will reconnect on the nextUP or DOWN operation, either manually or by using the door control or remote control.

THE REMOTE CONTROL BATTERY

To prevent possible SERIOUS INJURY or DEATH:

• NEVER allow small children near batteries.

• If batteryis swallowed, immediately notifydoctor. To reduce risk of fire, explosion or chemical burn:

• Replace ONLY with 3V2016 coin batteries.

• DO NOT recharge, disassemble, heat above 212°F (100°C) or incinerate.

To replace the batteries,remove the two screws and open the remote control housing. Push the battery out of the holder for removal.Insert replacement batteries positive side up (+).

Replace the batteries with only 3V2016 coin cell batteries.Dispose of old batteries properly.

Troubleshooting

Diagnostic Chart

Your garage door opener is programmed with self-diagnosticcapabilities.The UP and DOWN arrows on the garage door opener flash the diagnosticcodes.

DIAGNOSTIC CODE

1-1 1 FLASH 1 FLASH

1-2 1 FLASH 2 FLASHES

1-3 1 FLASH 3 FLASHES

1-4 1 FLASH 4 FLASHES

1-5 1 FLASH 5 FLASHES

UP ARROW

DOWN ARROW

SYMPTOM CAUSE RESOLUTION

The garage door opener will not close and the light(s) will flash

Wall-mounted door control will not function

The garage door opener will not close the door and the light(s) flash

The garage door opener clicksbut no movement

The opener runs approximately6-8" and stopsand/or reverses

Safetysensors are not installed, connected, or wires may be cut

Safetysensor wire shorted or reversed

The wires for the door control are shorted or the door control is faulty

Misaligned or obstructed safety sensors

Bad logic board

Communication error to travel module

Inspectsensor wires for a disconnected or cut wire(s). If the sending sensor with the amber LED is NOT lit, check the wire and connectionsfor that sensor.Ifsending sensor LED is lit,checkthe wire connections leading to the receiving sensor (green LED). Reattach wire or replace wire (22 gauge wire) as needed. Ifpre-wired home, checkthe splices. See page18for installation. Close the garage door using the remote control or the door control.

Inspectsensor wire for incorrect wiring or a pinched wire. If the sending sensor (amber LED) is not lit,checkthe wire leading to and from that sensor. Checkstaple points.Ifsending sensor LED is lit,checkthe wire leading to the receiving sensor (green LED). Reattach wire or replace wire (22 gauge wire) as needed. If pre-wired home, check the splices.See page 18 for installation. Close the garage door using the remote control or the door control.

Inspectdoor control wires for a short (staple in wire),replace wire (22 gauge wire) as needed. After installing new door control wires, if door control still does not operate garage door opener, replace the door control.

Realign the receiving sensor (green LED) by ensuring the LED is steady and not flickering. A flicker of the safetysensor LED indicates a misalignment.Make sure nothing is hanging or mounted on the door interrupting the sensor’s path while closing. Close the garage door using the remote control or the door control.

Replace the logic board.

Disconnectall power, remove cover,and locate the travel module. Ensure the wires for travel module are connected,if wires are connected, then replace the travel module.

Troubleshooting

DIAGNOSTIC CODE

3-3 3 FLASHES 3 FLASHES

4-1 4 FLASHES 1 FLASH

4-2 4 FLASHES 2 FLASHES

4-3 4 FLASHES 3 FLASHES

4-4 4 FLASHES 4 FLASHES

4-5 4 FLASHES 5 FLASHES

4-6 4 FLASHES 6 FLASHES

These are additional troubleshooting issues that will not show up in the diagnosticcodes:

My garage door opener beeps every 30 seconds:

Refer to the Battery Status LEDsection on page 27.

My remote control wilnot activate the garage door:

• Verify the lock feature is not activated on the door control.

• Reprogram the remote control.

• Ifthe remote control will still not activate the door checkthe diagnosticcodes to ensure the garage door opener is working properly.

UP ARROW

DOWN ARROW

SYMPTOM CAUSE RESOLUTION

The garage door opener is idle and the battery LED is constantlyflashing green

Door is closing, stops and reverses

The door stops while opening for no apparent reason

The door reversesfor no apparent reason or after touching the floor

My door reverses for no apparent reason or after touching the floor

The opener runs approximately 6-8" and stops and/or reverses

The door reversesfor no apparent reason while traveling down

Battery LED flashing Green, charging circuit stopsand starts to drain causing battery charging status.

Obstruction, binding or sticking door

Communication error to travel module

Safetysensors were temporarily obstructed or misaligned

Replace the logic board.

Ifyour door is binding or sticking,contacta trained door systems technician. If your door is okay, reprogram the travel, refer to page 24.

Manually open and close the door. Check for binding or obstructions. Refer to page 2.

Ifyour door is binding or sticking,contacta trained door systems technician. If your door is okay, reprogram the travel, refer to page 24.

Manually open and close the door. Check for binding or obstructions. Refer to page 2 .

Disconnectall power, remove cover,and locate the travel module. Ensure the wiresfor travel module are connected,if wires are connected,then replace the travel module.

Review Diagnostic Codes 1-1, 1-2, and 1-4 correct as necessary.Ifproblem persistsremove the sensors from the bracketsand realign the sensors ensuring the LED’s are steady and not flickering. Check for a temporary obstruction such as a rope attached to the door. Excessive vibration on the door rails may cause the sensors to be misaligned while the door is closing,secure rails or re-install the sensor bracketsto the wall or floor, refer to page 18.

My garage door opener light(s) will not turn off when the door is open:

The garage door opener is equipped with a feature that turns the light on when the safety reversing sensors have been obstructed or when the motion sensor on the door control detects movement in the garage. These features can be disabled using the door control, refer to the Door Control section.

My neighbor’s remote control opens my garage door:

Erase the memory from your garage door opener and reprogram the remote control(s).

The LEDs on the doorconrol blink:

Ifyou have an Smart Control Panel installed and the TTC is setto a customtime,press the ONbutton on the Premium Motion -Detecting Control Panel to setthe time properly.

NOTICE

CEILING MOUNT ONLY

Repair Parts

Rail Assembly Parts

DESCR IPTION PART NUMBER

1 Belt - for 7 foot door

Belt - for 8 footdoor

Belt - for 10 foot door

2 Belt Pulley Bracket 41B5424

3 Master Link 4A1008

4 One-Piece Rail

7 feet ( 2.1 m) One-Piece R ail 8 feet ( 2.4 m) One-Piece R ail 10 feet (3 m)

5 Trolley Assembly 41B3869- 3A

6 Tensioner Assembly 41B4103

7 Trolley Threaded Shaft 109B48

41A5434-11 41A5434-13 41A5434-14

2777BD

2778BD

2770BD

Installation Parts

DESCR IPTION PART NUMBER

1 C urved Door Arm 178B35

2 D oor Bracket w ith C levis

Pin and Fastener

3 Emergency Release Rope

and Handle

4 H eader Bracket with Clevis

Pin and Fastener

5 R emoteControl Visor Clip 29B137

6 Safety Sensor Br acket 41A5266-1

7 Safety Sensor Kit

Receiving and sending sensors with 3 feet (.9 m) 2-conductor wire

8 Straight Door Arm 178B34

9 White andRed/White Wire 41C5141-1

10 3V2016 Lithium Battery 10A19

11 Battery Backup 485LM

41A5047-1

41A2828

41A5047-2

41A5034

Contact Information

Address repair parts order to:

The Chamberlain Group, Inc. 6050 S. CountryClub Rd. Tucson, AZ85706

Before calli ng, please have themodel number of the garage door opener. If you are calling about a

Troubleshooting issue, it is recommended that you have access to your garage door opener w hile calling. If you

are ordering a repair part please have the following information: part number, part name, and model number.

For installation and service information call:

1-800-528-9131

Or visitus online at:

www.liftmaster.com

Repair Parts

Garage Door Opener Parts

DESCRIPTION PARTNUMBER

1 Sprocket and SprocketCover

with Screws

2 End Panel with labels, battery

cover and light socket

3 Light Lens 41A7562

4 Light Socket 41C279

5 Transformer 41A7635

6 Cover 41A7619

7 Motor and Travel Module 41D1739-1

8 Travel Module 41A7114-7

9 End Panel with all labels and

light socket

10 Receiver Logic Board 45DCT

11 Line Cord 41B135

12 Filter Board with Screws 41B7611

NOT SHOWN

Wire Harnesswith Screws 41B7418

Battery Backup 485LM

41C589-2

41D217

41D216

Accessories

828LM MyQ™ Internet Gateway:

Internet enabled accessory which connects to the computer and allows you to monitor and control garage door openers and lighting accessories powered by MyQ™ home activation technology.

823LM

Remote Light Switch:

Automaticallycontrol your lights using your garage door opener, a Security

2.0 remote control

or a MyQ™ Internet Gateway. Simply replaces your current wired wall switch.

825LM Remote Light Control:

Automaticallycontrol your lights using your garage door opener, a Security+®2.0 remote control or a MyQ™ Internet Gateway.

829LM Garage Door Monitor:

Monitor open/closed statusfor up to 4 MyQ™ compatible garage door openers and close them from anywhere in the home.

990LM System Surge Protector:

The Garage Door Opener Surge Protector is designed to protect LiftMaster®garage door openers against damage from lightning and power surges.Easy to install.

877MAX

SECURITY+®2.0 Keyless Entry:

For use outside of the home to enable accessto the garage using a 4-digit PIN.Works with ALL LiftMaster®openers from 1999present. MyQ™ compatible.

895MAX

SECURITY+®2.0 3-Button Remote Control:

Compatible with LiftMaster

garage door openers manufactured since1993. Includes visor clip.

893MAX

SECURITY+®2.0 3-Button Remote Control:

Compatible with LiftMaster

garage door openers manufactured since1993. Includes visor clip.

890MAX

SECURITY+®2.0 3-Button Mini Remote Control:

Compatible with LiftMaster

garage door openers manufactured since1993.

892LT/894LT 2 & 4 Button Learning Remote

Controls:

Workswith any LiftMaster

Garage Door opener manufactured since1993. Also compatible with Encrypted DIP for gate applications.

880LM

881LM

885LM

886LM

SECURITY+®2.0 Smart Control Panel®:

Displaystemperature,time and system diagnostics;includes a push bar to open and close the door and a lockfeature for extra security.

SECURITY+®2.0 MotionDetectingControl Panel with Timer-To-Close Control:

Multi-function door control with motion sensor that automatically turns opener lights on for 5 minutes when it detects a person entering the garage. Sensor can be easily deactivated when desired.

SECURITY+®2.0 Wireless DoorControl:

Push bar, light feature and auxiliary button. Includes battery.

SECURITY+®2.0 MotionDetecting Control Panel:

Multi-function door control with motion sensor that automatically turns opener lights on for 5 minutes when it detectsa person entering the garage. Sensor can be easily deactivated when desired.

Warranty

LIFTMASTERFIVE YEARLIMITED WARRANTY

LIFETIME MOTOR AND BELTLIMITED WARRANTY

ONE YEAR LIMITED WARRANTY FOR EVERCHARGE®STANDBY POWER BATTERY

The Chamberlain Group, Inc. (“Seller”) warrants to the first retail purchaser of this product, for the residence in which this product is originally installed, that it is free from defect in materials and/or workmanship for a period of 60 full months from the date of purchase and that the motor and belt are free from defect in materials and/or workmanship for a period of the lifetime of the product. The proper operation of this product is dependent on your compliance with the instructions regarding installation,operation, and maintenance and testing. Failure to comply strictlywith those instructions will void this limited warranty in its entirety.

If,during the limited warranty period, this productappears to contain a defect covered by this limited warranty, call 1-800-528-9131; toll free, before dismantling this product. Then send this product, prepaid and insured, to our servicecenter for warranty repair. You will be advised of shipping instructions when you call. Please include a brief description of the problem and a dated proof-of-purchase receipt with any product returned for warranty repair. Productsreturned to Seller for warranty repair, which upon receipt by Seller are confirmed to be defective and covered by this limited warranty,will be repaired or replaced (at Seller’s sole option) at no cost to you and returned pre-paid. Defective parts will be repaired or replaced with new or factory-rebuilt parts at Seller’s sole option.

ALLIMPLIED WARRANTIES FOR THE PRODUCT, INCLUDING BUT NOT LIMITED TO ANY IMPLIEDWARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE FIVE YEAR LIMITED WARRANTY PERIODSET FORTH ABOVE EXCEPT THE IMPLIED WARRANTIES WITH RESPECT TO THE BATTERY, WHICH IS LIMITED IN DURATION TO ONE YEAR, MOTOR AND BELT, WHICH ARE LIMITED IN DURATION TO THE LIFETIME LIMITED WARRANTY PERIOD FOR THE MOTOR AND BELT, AND NO IMPLIED WARRANTIES WILLEXIST OR APPLY AFTER SUCH PERIOD. Some states do not allow limitations on how longan implied warranty lasts, so the above limitation may not apply to you. THIS LIMITED WARRANTY DOES NOT COVER NON-DEFECT DAMAGE, DAMAGE CAUSED BY IMPROPER INSTALLATION, OPERATION OR CARE (INCLUDING, BUT NOT LIMITED TO ABUSE, MISUSE, FAILURE TO PROVIDE REASONABLE AND NECESSARY MAINTENANCE, UNAUTHORIZED REPAIRS OR ANY ALTERATIONS TO THIS PRODUCT), LABOR CHARGES FOR REINSTALLING A REPAIRED OR REPLACED UNIT, REPLACEMENT OF BATTERIES IN REMOTE CONTROL TRANSMITTERS AND LIGHT BULBS OR UNITS INSTALLED FOR NONRESIDENTIAL USE.

THIS LIMITED WARRANTY DOES NOT COVER ANY PROBLEMS WITH, OR RELATING TO, THE GARAGE DOOR OR GARAGE DOOR HARDWARE, INCLUDING BUT NOT LIMITED TO THE DOOR SPRINGS, DOOR ROLLERS, DOOR ALIGNMENT OR HINGES. THIS LIMITED WARRANTY ALSO DOES NOT COVER ANY PROBLEMS CAUSED BY INTERFERENCE. ANY SERVICE CALL THAT DETERMINES THE PROBLEM HAS BEEN CAUSED BY ANY OF THESE ITEMS COULD RESULTIN A FEE TO YOU. UNDER NO CIRCUMSTANCES SHALLSELLER BE LIABLE FOR CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES ARISING IN CONNECTION WITH USE, OR INABILITY TO USE, THIS PRODUCT. IN NO EVENT SHALL SELLER’S LIABILITY FOR BREACH OF WARRANTY, BREACH OF CONTRACT, NEGLIGENCE OR STRICT LIABILITY EXCEED THE COST OF THE PRODUCT COVERED HEREBY. NO PERSON IS AUTHORIZED TO ASSUME FOR US ANY OTHERLIABILITY INCONNECTION WITH THE SALE OF THIS PRODUCT.

Some states do not allow the exclusion or limitation of consequential, incidental or special damages, so the above limitation or exclusion may not apply to you. This limited warranty gives you specific legal rights, and you mayalso have other rights, which vary from state to state.

114A4243B All RightsReserved

LiftMaster 8550 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Preparation

Safety Symbol and Signal Word Review

Check the Door

Tools Needed

Overview/Carton Inventory

Assembly

1 Attach the rail to the garage door opener

2 Tighten the Belt

Installation

1 Determine the header bracket location

3 Attach the rail to the header bracket

4 Position the garage door opener

5 Hang the garage door opener

6 Install the light bulbs

7 Attach the emergency release rope and handle

8 Install the door bracket

Install the Door Control

2 Wire the door control to the garage door opener

3 Attach the warning labels

Introduction

1 Install the Safety Reversing Sensors

Power

2 Ensure the Safety Reversing Sensors are aligned

3 Ensure the Door Control is wired correctly

PROGRAMMING BUTTONS

Adjustments

INTRODUCTION

2 Test the Safety Reversal System

3 Test the Protector System

Battery Backup

1 Install the battery

2 Test the battery

Battery Status LED

CHARGE THE BATTERY

Operation

Features

TIMER-TO-CLOSE

MyQ™

SECURITY+®2.0 REMOTE CONTROLS AND DOOR CONTROLS

THE PROTECTOR SYSTEM®(SAFETY REVERSING SENSORS)

ENERGY CONSERVATION

LIGHTS

LIGHTS FEATURE

USING YOUR GARAGE DOOR OPENER

Push Bar

LIGHT button

Screen

Navigation Buttons

Door Control

USING THE DOOR CONTROL

LEARN A DEVICE

LOCK

AUTOMATIC LIGHT

MAINTENANCE ALERT (MAS)

MENU NAVIGATION

Remote Controls

To Erase the Memory

To Open the Door Manually

Maintenance

Troubleshooting

Repair Parts

Rail Assembly Parts

Installation Parts

Contact Information

Garage Door Opener Parts

Accessories

Warranty