Chamberlain 8550 User manual

CONTENTS

Preparation. . . . . . . . . . . . . . . .2-3

Assembly . . . . . . . . . . . . . . . . .4-5

Installation . . . . . . . . . . . . . . .6-13

Install the Door Control. . . . . . 14-16

Install the Protector System®. . 17-20

Power. . . . . . . . . . . . . . . . . . 21-22

Adjustments . . . . . . . . . . . . . 23-25

Battery Backup*. . . . . . . . . . . 26-27

Operation . . . . . . . . . . . . . . . . . 28

Features . . . . . . . . . . . . . . . . . . 29

Door Control . . . . . . . . . . . . . 30-31

Remote Control . . . . . . . . . . . 32-33

To Erase the Memory . . . . . . . . . 33

To Open the Door Manually . . . . . 34

Maintenance . . . . . . . . . . . . . . . 34

Troubleshooting. . . . . . . . . . . 35-36

Accessories. . . . . . . . . . . . . . . . 37

Warranty. . . . . . . . . . . . . . . . . . 38

Repair Parts . . . . . . . . . . . . . 39-41

* If applicable

ELITE Series

Garage Door Opener

The Chamberlain Group, Inc.

845 Larch Avenue

Elmhurst, Illinois 60126-1196

■ Please read this manual and the enclosed safety materials carefully!

■ Fasten the manual near the garage door after installation.

■The door WILL NOT CLOSE unless the Protector System®is connected and properly

aligned.

■ Periodic checks of the garage door opener are required to ensure safe operation.

■The model number label is located on the 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

Serial Number:

Date of Purchase:

Models

• 8550 - DC Belt Drive

with Battery Backup

• 8557 - 3/4 hp

Belt Drive

FOR RESIDENTIAL USE ONLY

Write down the following information for

future reference:

Safety Symbol and Signal

Word Review

Thisgarage door opener hasbeen designed and

tested to offer safe service provided it isinstalled,

operated,maintained and tested in strict

accordance with the instructions and warnings

contained in this manual.

When you see these Safety Symbolsand Signal

Words on the following pages, they will alert you

to the possibilityof serious injury or death if you

do notcomply with the warnings that accompany

them. The hazard maycome from something

mechanical or from electric shock. Read the

warnings carefully.

Mechanical

Electrical

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 notcomply with the cautionary

statements that accompany it. Read them

carefully.

Check the Door

1. Disable locks and remove any ropes

connected to the garage door.

2. Lift the door halfway up. Release the

door. If balanced, 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. Check the seal on the bottom of the

door.Anygap between the floor and

the bottom of the door must not exceed

1/4 inch (6 mm). Otherwise, the safety

reversal system may not work properly.

5. The opener should be installed above

the center of the door. If there is a

torsion spring or center bearing plate

in the way of the header bracket,itmay

be installed within 4 feet (1.2 m) to the

left or right of the door center. See

page 7.

Torsion Spring Extension Spring

To prevent possible SERIOUSINJURYor

DEATH:

• ALWAYS call a trained door systems

technician if garage door binds, sticks, or is

outofbalance. An unbalanced garage

door may NOT reverse when required.

• NEVER try to loosen, move or adjust

garage door, door springs, cables, pulleys,

brackets or 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 locks BEFORE installing

and operating the opener.

• ONLY operate garage door opener at

120 V,60 Hzto avoid malfunction and

damage.

Tools Needed

3/16

7/16

1/2

5/32

5/16

5/8

9/16

1/4

7/16

Preparation

Carton Inventory

A.tekcarbredaeH

B.Pulley and bracket

C.tekcarbrooD

D.mrarooddevruC

E.mraroodthgiartS

F.yellorT

G. Emergency release rope and handle

H.Rail

I.reneporoodegaraG

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 manual are for reference and your product may look different.

J. swercsdnarevoctekcorpS

K.tleB

L.lortnocrooD

M. eriwetihw/derdnaetihW

srosnesgnisreverytefaSwith white and white/black wire attached:

Sending Sensor (1) Receiving Sensor (1)

and Safety Sensor Brackets (2)

O.erutaretildnaslebalytefaS

P.Rail grease

Not Provided

Hardware

895MAX

Remote Control

880LM

Smart Control

Panel®829LM

Garage Door

Monitor

SECURITY✚ 2.0TM

ACCESSORIES

The Protector System®

Installation

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

Lag Screw 5/16"-9 x 1-5/8" (2)

Clevis Pin 5/16" x 2-3/4" (1)

Clevis Pin 5/16" x 1-1/4" (1)

Clevis Pin 5/16" x 1" (1)

Nut 5/16"-18 (4)

Lock Washer 5/16" (4)

Self-Threading Screw 1/4"-14 x 5/8" (2)

Ring Fastener (3)

Carriage Bolt 1/4"-20 x 1/2" (2)

Wing Nut 1/4"-20 (2)

Door Control Hardware

Screw 6AB x 1" (2)

Screw 6-32 x 1" (2)

Drywall Anchors (2)

Insulated Staples

To avoid possible SERIOUS INJURY to finger from

moving garage door opener:

• ALWAYS keep hand clear of sprocketwhile

operating opener.

• Securely attach sprocket cover BEFORE

operating.

To avoid SERIOUS damage to garage door

opener, use ONLY those bolts/fasteners

mounted in the top of the opener.

Washered Bolt

5/16"-18x1/2"

(Mounted in the

garage door opener)

Model 8550 (2)

Model 8557 (1)

HARDWARE

Hex Screw

#8x3/8"

(Packed with the

sprocket cover)

Lock Nut

(Mounted in the

garage door opener)

Model 8557 (1)

NOTE: ONLY use the bolts removed from the

garage door opener.Place the garage door

opener on the packing material to prevent

scratching.

1.1 Remove the two boltsfrom the top of the

garage door opener.

1.2 Align the rail and the styrofoam over the

sprocket.Cut the tape from the rail, belt,

and styrofoam.

1.3 Model 8550:

Fasten the rail with the previously

removed bolts.

Model 8557:

Fasten the rail with the previously

removed washer bolt and lock nut.

1.4 Position the beltaround the garage

door opener sprocket.

1.5 Attach the sprocket cover over the

garage door opener sprocketand

attach with hex screws.

Model 8550

Model 8557

Washered Bolt

5/16"-18x1/2" Hex Screw

#8x3/8"

Washered Bolt

5/16"-18x1/2" Hex Screw

#8x3/8"

Lock Nut

Assembly

1Attach the rail to the garage door opener

2Tighten the Belt

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

the trolley.Do not use any tools.

Spring Trolley Nut

(To motor unit)

2.2 Insert a flathead screwdriver tip into one of the nut ring slots and brace itfirmly againstthe trolley.

Nut ring

slot

2.3 Tighten the spring trolley nut with an adjustable wrench or a 7/16" open end wrench abouta quarter turn until the spring releasesand snapsthe nutring againstthe trolley.Thissets the spring to

optimum belt tension.

Nut Ring Nut Ring

AFTER RELEASE

1-1/4"

(3.18 cm)

BEFORE

(2.5 cm)

IMPORTANT INSTALLATION INSTRUCTIONS

WARNING

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 properlybalanced and lubricated garage door. An

improperly balanced door may NOT reverse when required and could result in SEVERE

INJURY or DEATH.

3. ALL repairsto cables, spring assemblies and other hardware MUST be made bya trained

door systemstechnician BEFORE installing opener.

4. Disable ALL locksand 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, butat least 6 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 caughtin garage door or opener mechanisms.

9. Install wall-mounted garage door control:

• within sight ofthe garage door.

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

• away from ALL moving parts of the door.

10. Place entrapment warning label on wall nextto garage door control.

11. Place manual release/safety reverse testlabel in plain view on inside ofgarage door.

12. Upon completion of installation, test safety reversal system. Door MUST reverse on contact with

a 1-1/2" (3.8 cm) high object (or a 2x4 laid flat) 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 functionalityifoperating 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.

Installation

To prevent possible SERIOUS INJURY or

DEATH:

• Header bracket MUST be RIGIDLY

fastened to structural supporton header

wall or ceiling, otherwise garage door might

NOT reverse when required. DO NOT

install header bracket over drywall.

• Concrete anchors MUST be 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

outofbalance. 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.

1Determine the header bracket location

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

installation instructions.

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

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

Youcan fasten the header bracket within 4 feet (1.22 m) of the left orright of the door

center only if a torsion spring orcenter bearing plate is in the way; or you canattach it to

the ceilingwhenclearance is minimal.(It may be mounted on the wall upside down if

necessary, to gain approximately 1/2" (1 cm).

If you need to install the header bracket on 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 highestpointof 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: Ifthe total number of inches exceeds the height available in your garage, use the maximum

height possible, or refer to page 8 for ceiling installation.

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

2x4

Structural

Supports

Level

(Optional)

OPTIONAL

CEILING

MOUNT FOR

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 bestfor

your particular requirements.Do not install the

header bracket over drywall. If installing into

masonry, use concrete anchors (not provided).

HARDWARE

Lag Screw

5/16" - 9 x 1-5/8"

OPTION A WALL INSTALLATION

2.1A Center the bracket on the vertical

centerline with the bottom edge 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 holesdesignated for ceiling

mount). Drill 3/16" pilot holes and fasten

the bracket securely to a structural

support with lag screws.

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 toward

the wall. The bracket can be mounted

flush againstthe ceiling when clearance

is minimal.

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

and fasten bracketsecurely to a structural

support with lag screws.

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

Lag Screw

5/16" - 9 x 1-5/8"

(Header Wall)

Ceiling Mounting Holes

(Finished Ceiling)

Vertical

Centerline of

Garage Door

Header

Bracket

6" (15 cm)

Maximum

Door Spring

(Garage Door)

Lag Screw

5/16" - 9 x 1-5/8"

Installation

2 Install the Header Bracket

3.1 Align the rail with the header bracket.

Insert the clevis pin through the holes in

the header bracket and rail.Secure

with the ring fastener.

NOTE: Use the packing material as a

protective base for the garage door opener.

Ring

Fastener

Clevis Pin

5/16" X 2-3/4"

HARDWARE

Clevis Pin

5/16" x 2-3/4" Ring Fastener

4Position the garage door opener

To prevent damage to garage door,rest garage

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: Ifthe door hits the trolley when it is raised, pull the trolley release arm down to

disconnect the inner and outer trolley. Slide the outer trolley toward the garage door opener.

The trolley can remain disconnected until instructed.

Connected Disconnected

3Attach the rail to the header bracket

5Hang 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

MUSTbe used ifinstalling ANY brackets into

masonry.

HARDWARE

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

Nut 5/16"-18

Lock Washer

5/16"

Installation

Hanging your garage door opener will varydepending on your

garage. Two representative installations are shown. Yours may

be different. Hanging brackets should be angled (Figure 1) to

provide rigid support. On finished ceilings (Figure 2), attach a

sturdymetal bracket to structural supportsbefore installing the

opener.This bracketand fastening hardware are notprovided.

Instructions beloware for attaching the garage door opener

directly to structural supports.

5.1 Measure the distance from each side of the motor unit to

the structural support.

5.2 Cut both pieces ofthe hanging bracketto required lengths.

5.3 Drill 3/16" pilot holes in the structural supports.

5.4 Attach one end ofeach bracket to a supportwith 5/16"-

18x1-7/8" lag screws (not provided).

5.5 Fasten the opener to the hanging bracketswith 5/16"-

18x7/8" hex bolts, lock washers and nuts.

5.6 Checkto make sure the rail is centered over the door (or in

line with the header bracket ifthe bracket is not centered

above the door).

5.7 Remove the 2x4. Operate the door manually.If the door

hitsthe rail,raise the header bracket.

NOTE: DO NOT connect power to opener at this time.

FIGURE 1 FIGURE 2

(Not Provided)

Lag Screws

5/16"- 18x1-7/8"

Measure

Distance

Hex Bolt 5/16"- 18x7/8", Lock Washer 5/16", Nut 5/16"-18

FIGURE 3

Not Provided

Finished Ceiling

Unfinished Ceiling

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