Chamberlain 8550W User manual

Wi-Fi®Garage Door Openers
Belt Drive Models - 8550W 8550WL 8550WLB 8550WLB-267 8557W WLED WLED-267
Chain Drive Models - 8587W 8587WL 8580WLB
FOR RESIDENTIAL USE ONLY lPlease read this manual and the safety materials carefully!
lThe door WILL NOT CLOSE unless the Protector System®is
connected and properly aligned.
lPeriodic checks of the garage door opener are required to
ensure safe operation.
lThis garage door opener is ONLY compatible with myQ®
and Security+ 2.0®accessories.
lDO NOT install on a one-piece door if using devices or
features providing unattended close. Unattended devices
and features are to be used ONLY with sectional doors.
lAttach warning labels to the location indicated on label.
LiftMaster
300 Windsor Drive
Oak Brook, IL 60523

2
Table of Contents
Preparation 3
Carton Inventory: Models 8550W, 8550WL, 8550WLB, 8550WLB-267, 8557WL, WLED and
WLED-267 6
Carton Inventory: Models 8587W, 8587WL, and 8580WLB 7
Assembly 8
Models 8550W, 8550WL, 8550WLB, 8550WLB-267, 8557W, WLED, andWLED-267 8
Models 8587W, 8587WL, and 8580WLB 10
Installation 12
Install the Door Control 20
Install the Protector System 22
Power 26
Adjustments 28
Battery Backup 31
Operation 33
Maintenance 40
Troubleshooting 41
Accessories 43
Warranty 44
Automatic Garage Door Opener Safety & Maintenance Guide 45
Repair Parts 47
Models 8550W, 8550WL, 8550WLB, 8550WLB-267,and 8557W 47
Models WLED and WLED-267 50
Models 8587W, 8587WL, and 8580WLB 52

3
Preparation
myQ®Serial Number
Write down the following information for future reference:
myQ®Serial Number:
myQ®Serial Number Product S/N
Product S/N:
Date of Purchase:
/ /
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 instructions and warnings contained in
this manual.
When you see these Safety Symbols and Signal Words on the following pages, they will alert you to
the possibility of serious injury or death if you do not comply with the warnings that accompany
them. The hazard may come 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 possibility of damage
to your garage door and/or the garage door opener if you do not comply with the cautionary
statements that accompany it. Read them carefully.
WARNING: This product can expose you to chemicals including lead, which are known to
the State of California to cause cancer or birth defects or other reproductive harm. For more
information go to www.P65Warnings.ca.gov
Unattended Operation
The Timer-to-Close (TTC) feature, the myQ®App, and myQ®Garage Door and Gate Monitor are
examples of unattended close and are to be used ONLY with sectional doors. Any device or feature
that allows the door to close without being in the line of sight of the door is considered unattended
close. The Timer-to-Close (TTC) feature, the myQ®App, and any other myQ®devices are to be used
ONLY with sectional doors.

4
Preparation
Before You Connect with Your Smartphone
Monitor and control your garage door from anywhere using the myQ®App.
You will need:
lWi-Fi enabled smartphone, tablet or laptop
lBroadband Internet Connection
lWi-Fi signal in the garage (2.4 Ghz, 802.11b/g/n required)
lPassword for your home network (router's main account, not guest network)
Test the Wi-Fi Signal Strength
Make sure your mobile device is connected to your Wi-Fi network. Hold your mobile device in the
place where your garage door opener will be installed and check the Wi-Fi signal strength.
Check Signal Strength. If you see:
Wi-Fi signal is strong.
The garage door opener will
connect to your Wi-Fi network.
Wi-Fi signal is weak.
The garage door opener may connect to your
Wi-Fi network. If not, try one of the options
below to improve the Wi-Fi signal:
No Wi-Fi signal.
The garage door opener will not be able to
connect to your Wi-Fi network. Try one of the
options below to improve the Wi-Fi signal:
• Move your router closer to the garage door opener to minimize
interference from walls and other objects
• Buy a Wi-Fi range extender
For compatible router specifications and help, visit support.chamberlaingroup.com.
See page 35 to connect the garage door opener to a mobile device.
Check the Door
To prevent possible SERIOUSINJURYor DEATH:
lALWAYS 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.
lNEVER try to loosen, move or adjust garage door, door springs, cables, pulleys, brackets
or their hardware, ALLof which are under EXTREME tension.
lDisable ALLlocks and remove ALLropes connected to garage door BEFORE installation
and operating garage door opener to avoid entanglement.
lDO NOT install on a one-piece door if using devices or features providing unattended
close. Unattended devices and features are to be used ONLY with sectional doors.
To prevent damage to garage door and opener:
lALWAYS disable locks BEFORE installing and operating the opener.
lONLY operate garage door opener at 120V, 60Hz to avoid malfunction and damage.
Before you begin:
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. If your door
binds, sticks, or is out of balance, call a trained door systems technician.
4. Check the seal on the bottom of the door. Any gap between the floor and
the bottom of the door must not exceed 1/4" (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, it
may be installed within 4feet (1.2 m) to the left or right of the door
center. See page 13.
Torsion
Spring
Extension
Spring
OR

5
Preparation
Tools Needed
3/16
5/32
5/16
7/16
1/2
5/8
9/16
1/4
7/16

6
Preparation
Carton Inventory: Models 8550W, 8550WL, 8550WLB,
8550WLB-267, 8557WL, WLED and WLED-267
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.
A. Header bracket
B. Pulley and bracket
C. Door bracket
D. Curved door arm
E. Straight door arm
F. Trolley
G. Emergency release rope and handle
H. Rail
I. Garage door opener
J. Sprocket cover with hex screws
K. Belt
L. Door control
M. White and red/white wire
N. The Protector System
Safety reversing sensors with white and white/black wire attached: Sending sensor
(1), receiving sensor (1), and safety sensor brackets (2)
O. Safety labels and literature
P. Rail grease
Q. Battery (If applicable)
Security+ 2.0 Accessories
893MAX
3- Button Remote Control
880LMW
Smart Control Panel®
Installation
Hex Bolt 5/16"-18 x 7/8" (4) Lock Washer 5/16" (4)
Lag Screw 5/16"-9 x 1-5/8" (2) Self-Threading Screw 1/4"-14 x 5/8" (2)
Clevis Pin 5/16" x 2-3/4" (1) Ring Fastener (3)
Clevis Pin 5/16" x 1-1/4" (1) Carriage Bolt 1/4"-20 x 1/2" (2)
Clevis Pin 5/16" x 1" (1) Wing Nut 1/4"-20 (2)
Nut 5/16"-18 (4)
Door Control Hardware
Screw 6AB x 1" (2) Drywall Anchors (2)
Screw 6-32 x 1" (2)
AB
C
J
N
I
OP
Q
DE
F
H
GK
L
M
Not Provided
Not
Provided

7
Preparation
Carton Inventory: Models 8587W, 8587WL, and 8580WLB
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.
Garage Door Opener Assembly
A. Header bracket
B. Pulley and bracket
C. Door bracket
D. Curved door arm
E. Straight door arm
F. Trolley
G. Emergency release rope and handle
H. Rail
I. Garage door opener
J. Chain spreader
K. Chassis support bracket
L. Chain
M. Door control
N. White and red/white wire
O. The Protector System
Safety reversing sensors with white and white/black wire attached: Sending sensor (1),
receiving sensor (1), and safety sensor brackets (2)
P. Safety labels and literature
Q. Rail grease
Security+ 2.0 Accessories
893MAX
3- Button Remote Control
880LMW
Smart Control Panel®
Hardware
Assembly
Chassis Support Bracket Hardware Chain Spreader Hardware
Screw #8-32 x 3/8" (2) Screw #8-32 x 3/8" (2)
Hex Bolts 1/4"-20 x 5/8" (2) Rail Hardware
Lock Washers (2) Washered Bolts and Lock Washer (mounted in the
top of the garage door opener)
Washered Bolt 5/16"-18 x 1/2" (2)
Installation
Hex Bolt 5/16"-18 x 7/8" (4) Self-Threading Screw 1/4"-14 x 5/8" (2)
Lag Screw 5/16"-9 x 1-5/8" (2) Ring Fastener (3)
Lag Screw 5/16"-18 x 1-5/8" (2) Carriage Bolt 1/4"-20 x 1/2" (2)
Clevis Pin 5/16" x 2-3/4" (1) Wing Nut 1/4"-20 (2)
Clevis Pin 5/16" x 1-1/4" (1) Hex Bolt 1/4"-20 x 5/8" (2)
Clevis Pin 5/16" x 1" (1) Lock Nut 1/4"-20 (2)
Nut 5/16"-18 (4) Lag Screw 1/4" x 1-1/2" (4)
Lock Washer 5/16"-16 (4)
Door Control Hardware
Screw 6AB x 1" (2) Drywall Anchors (2)
Screw 6-32 x 1" (2)
AB
C
K
J
I
P
DE
F
H
G
L
M
N
Q
O
Not
Provided Not
Provided

8
Assembly
1 Attach the Rail to the Garage Door Opener
Models 8550W, 8550WL, 8550WLB, 8550WLB-267, 8557W, WLED, andWLED-267
To avoid possible SERIOUS INJURY to finger from moving garage door opener:
lALWAYS keep hand clear of sprocket while operating opener.
lSecurely 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.
NOTE: ONLY use the bolts removed from the garage door opener. Place the garage door opener on
the packing material to prevent scratching.
1. Models 8550W, 8550WL, 8550WLB, 8550WLB-267, WLED, and WLED-267: Remove the
two bolts from the top of the garage door opener.
Model 8557W: Remove bolt and lock nut from the top of the garage door opener.
2. Align the rail and the styrofoam over the sprocket. Cut the tape from the rail, belt, and
styrofoam.
3. Models 8550W, 8550WL, 8550WLB, 8550WLB-267, WLED, and WLED-267: Fasten the
rail with the previously removed bolts.
Model 8557W: Fasten the rail with the previously removed washered bolt and lock nut.
4. Position the belt around the garage door opener sprocket.
5. Attach the sprocket cover over the garage door opener sprocket and attach with hex screws.
6. Align the rail and the styrofoam over the sprocket. Cut the tape from the rail, belt, and
styrofoam.
7. Position the belt around the garage door opener sprocket.
8. Attach the sprocket cover over the garage door opener sprocket and attach with hex screws.
Models 8550W, 8550WL, 8550WLB, 8550WLB-267, WLED, and WLED-267
Model 8557W
Washered Bolt
5/16"-18x1/2"
Hex Screw
#8x3/8"
Lock Nut
Hex Screw
#8x3/8"
(Packed with the
sprocket cover)
Lock Nut
(Mounted in the
garage door opener)
Model 8557W (1)
Washered Bolt
5/16"-18x1/2"
Hex Screw
#8x3/8"
HARDWARE
Washered Bolt 5/16"-18x1/2"
(Mounted in the garage door opener)
Models 8550W, 8550WL, 8550WLB,
8550WLB-267, WLED, and WLED-267 (2)
Model 8557W (1)

9
Assembly
2 Tighten the Belt
Models 8550W, 8550WL, 8550WLB, 8550WLB-267, 8557W, WLED, andWLED-267
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.
2. Insert a flathead screwdriver tip into one of the nut ring slots and brace it firmly against the
trolley.
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.
Spring Trolley Nut
(To motor unit)
Nut ring
slot
Nut Ring Nut Ring
AFTER RELEASE
1-1/4"
(3.18 cm)
BEFORE
1"
(2.5 cm)
1
2
3

10
Assembly
1 Attach the Rail to the Garage Door Opener
Models 8587W, 8587WL, and 8580WLB
To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the
top of the opener.
NOTE: ONLY use the bolts removed from the garage door opener. Place the garage door opener on
the packing material to prevent scratching.
1. Remove bolt and lock nut from the top of the garage door opener.
2. Align the rail and the styrofoam over the sprocket. Cut the tape from the rail, chain, and
styrofoam.
3. Fasten the rail with the previously removed washered bolt and lock nut.
4. Position the chain around the garage door opener sprocket.
5. Attach the chain spreader to the garage door opener with screws.
6. Models 8587W and 8587WL Only: Guide the chain around the selected groove in the chain
spreader, to engage either the 8-tooth or 6-tooth sprocket.
NOTE: The 6-tooth sprocket is for use with Carriage House Doors and the 8-tooth sprocket is
for use with regular doors.
Washered Bolt
5/16"-18x1/2"
(Mounted in the garage
door opener)
HARDWARE
Lock Nut
(Mounted in the
garage door opener)
Lock
Nut
Washered Bolt
5/16"-18x1/2"
Hex Screws 8-32x1"
Washers
Chain Spreader6-Tooth
Sprocket
8-Tooth
Sprocket
Chain Spreader
Models 8587W and 8587WLB only
Motor Unit Mounting Plate Motor Unit Mounting Plate