Chamberlain Contractor Series User manual

Wi-Fi®Garage Door Opener
Contractor Series Chain Drive Models 8160W, 8160WB,
8164W, and 8165W
Contractor Series Belt Drive Model 8155W
• Please read this manual and the safety materials
carefully!
• 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.
• This garage door opener is ONLY compatible with
myQ®and Security+ 2.0®accessories.
• DO 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.
• Attach warning labels to the location indicated on
label.
FOR RESIDENTIAL USE ONLY
LiftMaster
300 Windsor Drive
Oak Brook, IL 60523
Register your garage door opener to receive
updates and offers from LiftMaster
Send it in by texting
the photo to 71403 (US)
or visit www.liftmaster.photo (Global)
Take a photo of the camera icon
including the points ( ).

Contents
Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Carton Inventory - Models 8160W, 8160WB, 8164W, 8165W. . . . . . . . . . . . . . . . . . 6
Carton Inventory - Models 8155W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Assembly for Models: 8160W, 8160WB, 8164W, 8165W . . . . . . . . . . 8
Assembly for Model: 8155W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Install the Door Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-21
Install the Door Control - 882LMW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Install the Door Control - 883LMW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Install the Protector System®. . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-31
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Program the Travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Test the Safety Reversal System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Test the Protector System®. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Battery Backup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-33
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-41
Important Safey Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Connect With Your Smartphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Using the Multi-Function Door Control - 882LMW . . . . . . . . . . . . . . . . . . . . . . . . . 37
Using the Push Button Door Control - 883LMW . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Control Panel Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
To Erase the Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
To Open the Door Manually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43-44
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Automatic Garage Door Opener
Safety & Maintenance Guide . . . . . . . . . . . . . . . . . . . . . . . . . 47-48
Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49-53
2

3
Preparation
Serial Number
Write down the following information for future reference:
myQ®Serial Number:
Serial Number
myQ®Serial Number
Product Serial Number:
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 Smartphone Control 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 Smartphone Control, 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
Visit support.chamberlaingroup.com for more details.
See page 36 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 11.
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 - 8160W, 8160WB, 8164W, 8165W
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
K. Chain
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 Backup (Model 8160WB only)
Security+ 2.0®Accessories
882LMW
Multi-Function Door Control
Models: 8160W, 8160WB, 8165W
883LMW
Push Button Door Control
Models: 8164W
893LM
Remote Control
Models: 8160W, 8160WB, 8165W
891LM
Remote Control
Model: 8164W
Hardware
Installation Door Control Hardware
Hex bolt 5/16"-18 x 7/8" (4) Screw 6AB x 1" (2)
Lag screw 5/16"-9 x 1-5/8" (2) Screw 6-32 x 1" (2)
Clevis Pin 5/16" x 2-3/4" (1) Drywall anchors (2)
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)
AB
C
J
N
I
O
D
E
F
H
G
K
L
M
Not Provided
Not
Provided
P
Q

7
Preparation
Carton Inventory - 8155W
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
Security+ 2.0®Accessories
882LMW
Multi-Function Door Control
893LM
Remote Control
Installation Hardware
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)
Screw 6-32 x 1" (2)
Drywall anchors (2)
AB
C
J
N
I
OP
DE
F
H
GK
L
M
Not Provided
Not
Provided

8
Assembly for Models: 8160W, 8160WB, 8164W, 8165W
1 Attach the Rail to the Garage Door Opener
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. Remove the two bolts 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 bolts.
4. Position the chain around the garage door opener sprocket.
5. a) For models 8160W and 8160WB, attach the sprocket cover over the garage
door opener sprocket and attach with hex screws.
b) For models 8164W and 8165W, install the sprocket cover by squeezing the
sides and inserting the tabs into the slots on the garage door opener.
Washered Bolt
5/16"-18x1/2" Hex Screw
#8x3/8"
Washered Bolt 5/16"-18 x 1/2"
(Mounted in the garage door opener)
5. a) 8160W and 8160WB 5. b) 8164W and 8165W
2 Tighten the Chain
1. Loosen the inner nut and lock washer on the trolley threaded shaft.
2. Tighten the outer nut until the chain is a 1/2" above the base of the rail at the
midpoint of the rail.
3. Re-tighten the inner nut.
Slack in the chain is normal when the door is closed. No readjustment is necessary.
1/2" (13 mm)

9
Assembly for Model: 8155W
1 Attach the Rail to the Garage Door Opener
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. Remove the two bolts 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. Fasten the rail with the previously removed bolts.
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.
Washered Bolts
5/16"-18 x 1/2"
(Mounted in
the garage
door opener)
Hex Screws 8 x 3/8"
Sprocket
Cover
2 Tighten the Belt
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
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. Where possible, install the door opener 7 feet (2.13 m) or more above the
floor.
6. Mount the emergency release within reach, but at least 6 feet (1.83 m) above
the floor and avoiding contact with vehicles to avoid accidental release.
7. NEVER connect garage 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.
9. Install wall-mounted garage door control:
lwithin sight of the garage door.
lout of reach of small children at a minimum height of 5feet
(1.5m) above floors, landings, steps or any other adjacent
walking surface.
laway from ALL moving parts of the door.
10. Place entrapment warning label on wall next to garage door control in
a prominent location.
11. Place emergency release/safety reverse test label in plain view on
inside of garage 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. DO 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.
NOTE: If you are installing the garage door opener on a one-piece door, visit LiftMaster.com for installation instructions.