Chamberlain LiftMaster 3280cm 1/2 HP User manual

The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
GARAGE DOOR OPENER
Models 3280CM 1/2 HP
3280CM-267 1/2 HP
For Residential Use Only
Owner’s Manual
■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 opener are required to ensure safe operation.
■The model number label is located on the front panel of your opener.
®

TABLE OF CONTENTS
2
Introduction 2-5
Safety symbol and signal word review. . . . . . . . . . . . . . .2
Preparing your garage door . . . . . . . . . . . . . . . . . . . . . . .3
Tools needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Carton inventory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Hardware inventory . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Assembly 6-7
Attach the rail to the motor unit . . . . . . . . . . . . . . . . . . . .6
Set the belt tension . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Attach the belt cap retainer . . . . . . . . . . . . . . . . . . . . . . .7
Installation 7-22
Installation safety instructions . . . . . . . . . . . . . . . . . . . . .7
Determine the header bracket location . . . . . . . . . . . . . .8
Install the header bracket. . . . . . . . . . . . . . . . . . . . . . . . .9
Attach the rail to the header bracket . . . . . . . . . . . . . . .10
Position the opener . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Hang the opener. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Install the door control . . . . . . . . . . . . . . . . . . . . . . . . . .13
Install the light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Attach the emergency release rope and handle . . . . . .14
Electrical requirements. . . . . . . . . . . . . . . . . . . . . . . . . .15
Install the Protector System®. . . . . . . . . . . . . . . . . . 16-18
Fasten the door bracket . . . . . . . . . . . . . . . . . . . . . . 19-20
Connect the door arm to the trolley . . . . . . . . . . . . . 21-22
Adjustment 23-25
Adjust the travel limits . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Adjust the force . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Test the safety reversal system . . . . . . . . . . . . . . . . . . . 25
Test the Protector System®. . . . . . . . . . . . . . . . . . . . . . 25
Operation 26-30
Operation safety instructions . . . . . . . . . . . . . . . . . . . . . 26
Using your garage door opener . . . . . . . . . . . . . . . . . . . 26
Using the wall-mounted door control . . . . . . . . . . . . . . . 27
To open the door manually . . . . . . . . . . . . . . . . . . . . . . 27
Care of your garage door opener. . . . . . . . . . . . . . . . . . 28
Having a problem? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Diagnostic chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Programming 31-32
To add or reprogram a hand-held remote control . . . . . 31
To erase all codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3-Button remotes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
To add, reprogram or change
a Keyless Entry PIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Repair Parts 33-34
Rail assembly parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Installation parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Motor unit assembly parts . . . . . . . . . . . . . . . . . . . . . . . 34
Accessories 35
Repair Parts and Service 36
Warranty 36
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.
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.
INTRODUCTION
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.
Mechanical
Electrical

3
Preparing your garage door
Before you begin:
• Disable locks.
• Remove any ropes connected to garage door.
• Complete the following test to make sure your garage
door is balanced and is not sticking or binding:
1. Lift the door about halfway as shown. Release the
door. If balanced, it should stay in place, supported
entirely by its springs.
2. Raise and lower the door to see if there is any binding
or sticking.
If your door binds, sticks, or is out of balance, call a trained
door systems technician.
Tools needed
During assembly, installation and adjustment of the
opener, instructions will call for hand tools as illustrated
below.
Sectional Door
One-Piece Door
Pliers
Wire Cutters
Claw Hammer
Hack Saw
Screwdriver Adjustable End Wrench
1/2" and 7/16" Sockets
and Wrench
Drill
Tape Measure
2
1
Stepladder
Pencil
3/16", 5/16" and
5/32" Drill Bits
Carpenter’s
Level (Optional)
To prevent damage to garage door and opener:
• ALWAYS disable locks BEFORE installing and operating the
opener.
• ONLY operate garage door opener at 120V, 60 Hz to avoid
malfunction and damage.
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, brackets or their hardware, all of
which are under EXTREME tension.
• Disable ALL locks and remove ALL ropes connected to
garage door BEFORE installing and operating garage door
opener to avoid entanglement.

FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 12.
Safety
Reversing Sensor
Header
Wall
Access
Door
Safety
Reversing Sensor
Wall-
mounted
Door
Control
Motor Unit
Gap between floor and bottom of door
must not exceed 1/4" (6 mm)
ONE-PIECE DOOR WITHOUT TRACK
4
Planning
Identify the type and height of your garage door. Survey your garage area to see if any of the conditions below
apply to your installation. Additional materials may be required. You may find it helpful to refer back to this page
and the accompanying illustrations as you proceed with the installation of your opener.
Access
Door
Safety
Reversing Sensor
Safety
Reversing
Sensor
Gap between floor
and bottom of door
must not exceed 1/4" (6 mm).
ONE-PIECE DOOR WITH TRACK
Safety Reversing Sensor
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 19 for details.
— — — — — — — —
Header Wall
Safety
Reversing
Sensor
Gap between floor and bottom of door
must not exceed 1/4" (6 mm)
Extension Spring
Torsion Spring
Access Door
OR Wall-
mounted
Door
Control
Motor Unit
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 12.
Vertical
Centerline
of Door
SECTIONAL DOOR INSTALLATION

5
Your garage door opener is packaged in two cartons which contain the motor unit and all parts illustrated below.
Accessories will depend on the model purchased. If anything is missing, carefully check the packing material.
Parts may be stuck in the foam. Hardware for installation is also listed below.
Carton Inventory
Straight Door
Arm Section
Curved Door
Arm Section
Safety Labels
and
Literature
Header Bracket
UP
CEILING MOUNT ONLY
Belt Cap Retainer
Remote Control
Visor Clip
Door Bracket
SECURITY✚
®
3-Button Remote Control
Model 3280CM(1), 3280CM-267(2)
Multi-Function
Door Control Panel
LOCK
LIGHT
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with 2-Conductor White & White/Black
Bell Wire attached
Safety Sensor
Bracket (2)
SECURITY✚
®
Keyless Entry
2-Conductor Bell Wire
White & White/Red
The Protector System®
Motor Unit with 2 Light Lenses
One-Piece
Rail
Styrofoam
Belt
Pulley Bracket
Belt
Trolley
Model 3280CM -267 ONLY
INSTALLATION HARDWARE
Hex Bolt 5/16"-18x7/8" (4)
Lag Screw 5/16"-9x1-5/8" (2)
Lag Screw 5/16"-18x1-7/8" (2)
Clevis Pin 5/16"x2-3/4" (1)
Clevis Pin 5/16"x1-1/4" (1)
Clevis Pin 5/16"x1" (1)
Nut 5/16"-18 (4)
Lock Washer 5/16" (4)
Screw 6ABx1-1/4" (2)
Screw 6-32x1" (2)
Self-Threading Screw 1/4"-14x5/8" (2)
Insulated Staples (30)
Ring Fastener (3)
Drywall Anchors (2)
Rail Grease
Carriage Bolt 1/4"-20x1/2" (2)
Wing Nut 1/4"-20 (2)
Rope
Handle

6
ASSEMBLY STEP 1
Attach the Rail to the Motor Unit
To avoid installation difficulties, do not run the garage
door opener until instructed to do so.
• Remove the two washered bolts mounted in top of
motor unit.
• Align rail and styrofoam over sprocket. Cut tape from
rail, belt and styrofoam.
• REMOVE STYROFOAM.
• Insert washered bolts through the rail into the motor
unit. Tighten bolts securely.
Use only these bolts! Use of any other bolts will
cause serious damage to door opener.
• Position belt over the motor unit sprocket.
ASSEMBLY STEP 2
Set the Belt Tension
• By hand, thread the spring trolley nut on the threaded
shaft until it is finger tight against the trolley (Figure 1).
Do not use any tools.
• Insert a screwdriver tip into one of the nut ring slots and
brace it firmly against the trolley (Figure 2).
• Place a 7/16" open end wrench on the square
end. Rotate about 1/4 turn until the spring releases and
snaps the nut ring against the trolley (Figure 3).
This extends the spring for optimum belt tension.
Trolley
Threaded
Shaft
Spring/Trolley Nut
The Chamberlain Group, Inc.
Liftmaster Synchro Drive
Spring Trolley Nut Assembly
3/5/92 - 5/16 /92 - 5/21/92 - 6/2/92
6/11/92
Nut
Ring
Trolley
Threaded
Shaft
Nut Ring
Slots
Square
End
Nut Ring Trolley Nut Ring Trolley
1" (2.5 cm) 1-1/4" (3.18 cm)
BEFORE AFTER RELEASE
Figure 1
Figure 2
Figure 3
USE ONLY THIS
TYPE AND SIZE
BOLT
Washered Bolt
5/16"-18x1/2"
Rail
Hole
Sprocket
Rail
Hole
To avoid SERIOUS damage to opener, ONLY use bolts/
fasteners mounted in top of motor unit.

7
INSTALLATION
ASSEMBLY STEP 3
Attach the Belt Cap Retainer
• Position the belt cap retainer over the motor unit sprocket
so the two holes in cap align with the two holes in
mounting plate. Attach with 8x3/8" hex screws provided.
You have now finished assembling your garage door
opener. Please read the following warnings before
proceeding to the installation section.
Motor Unit
Sprocket
Mounting Plate
Hex Screws 8x3/8" Belt Cap
Retainer
Hex Screw
#8x3/8"
HARDWARE SHOWN
ACTUAL SIZE
To avoid possible SERIOUS INJURY to fingers from moving
garage door opener:
• ALWAYS keep hand clear of sprocket while operating opener.
• Securely attach sprocket cover BEFORE operating.
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of SEVERE INJURY or DEATH:
WARNING
WARNING
WARNINGWARNING
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 emergency release handle 6 feet (1.83 m) above
floor.
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:
• within sight of the 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 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 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.

8
INSTALLATION STEP 1
Determine the Header Bracket Location
Installation procedures vary according to garage door
types. Follow the instructions which apply to your door.
1. Close the door and mark the inside vertical centerline of
the garage door.
2. Extend the line onto the header wall above the door.
You can fasten the header bracket within 4 feet
(1.22 m) of the left or right of the door center only if
a torsion spring or center bearing plate is in the way;
or you can attach it to the ceiling (see page 9) when
clearance 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 as
shown here and on page 9.
3. Open your door to the highest point of travel as shown.
Draw an intersecting horizontal line on the header wall
above the high point:
• 2" (5 cm) above the high point for sectional door and
one-piece door with track.
• 8" (20 cm) above the high point for one-piece door
without track.
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 9 for ceiling installation.
Header Wall
Sectional door with curved track
Highest Point
of Travel
Door
Track
2" (5 cm)
One-piece door with horizontal track
Door
Track
Header Wall
Highest Point
of Travel
2" (5 cm)
Header Wall
Vertical Centerline
of Garage Door
Level
(optional)
2x4
2x4
Structural
Supports
OPTIONAL
CEILING
MOUNT
FOR
HEADER
BRACKET
Unfinished
Ceiling
Door
Jamb
Hardware
One-piece door without track:
jamb hardware
8" (20 cm)
Highest
Point
of Travel Door
Pivot
8" (20 cm)
One-piece door without track:
pivot hardware
Highest
Point
of Travel
Header Wall
Header Wall
To prevent possible SERIOUS INJURY or DEATH:
• Header bracket MUST be RIGIDLY fastened to structural
support on 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 out of balance. An unbalanced
garage door might not reverse when required.

9
INSTALLATION STEP 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. Do
not install the header bracket over drywall. If installing
into masonry, use concrete anchors (not provided).
WALL HEADER BRACKET INSTALLATION
• 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).
• Mark the vertical set of bracket holes (do not use the
holes designated for ceiling mount). Drill 3/16" pilot holes
and fasten the bracket securely to a structural support
with the hardware provided.
Lag Screw
5/16"-9x1-5/8"
HARDWARE SHOWN ACTUAL SIZE
Lag Screws
5/16"-9x1-5/8"
Highest Point of
Garage Door Travel
Vertical
Centerline of
Garage Door
Header
Wall
Garage
Door
UP
CEILING MOUNT ONLY
Wall Mounting Holes
Optional
Wall Mounting Holes
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
UP
CEILING MOUNT ONLY
Door Spring
Header
Bracket
2x4
Structural
Support
Vertical
Centerline of
Garage Door
Horizontal
Line
UP
CEILING MOUNT ONLY
Ceiling Mounting Holes
The nail hole is for
positioning only.
You must use lag screws
to mount the header bracket.
UP
Lag Screws
5/16"-9x1-5/8"
Garage Door
Vertical
Centerline
of Garage Door
Header Wall
– Finished Ceiling –
Header
Bracket
6" (15 cm)
Maximum
Vertical
Centerline
of Garage Door
Door
Spring
CEILING HEADER BRACKET INSTALLATION
• Extend the vertical centerline onto the ceiling as shown.
• 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
against the ceiling when clearance is minimal.
• Mark the side holes. Drill 3/16" pilot holes and fasten
bracket securely to a structural support with the
hardware provided.

Header
Bracket
Belt Pulley
Bracket
Temporary
Support
Header Wall
Garage
Door
Clevis Pin
5/16"x2-3/4"
Ring
Fastener
Header
Bracket
Belt Pulley
Bracket
Rail
10
Clevis Pin
5/16"x2-3/4" Ring Fastener
INSTALLATION STEP 3
Attach the Rail to the Header Bracket
• Position the opener on the garage floor below the
header bracket. Use packing material as a protective
base. NOTE: If the door spring is in the way you’ll need
help. Have someone hold the opener securely on a
temporary support to allow the rail to clear the spring.
• Position the rail bracket against the header bracket.
• Align the bracket holes and join with a clevis pin
as shown.
• Insert a ring fastener to secure.
HARDWARE SHOWN ACTUAL SIZE

11
ONE-PIECE DOOR WITHOUT TRACK
A 2x4 on its side is convenient for setting an ideal door-
to-rail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 on its side
on the top section of the door beneath the rail.
• The top of the door should be level with the top of the
motor unit. Do not position the opener more than 4" (10
cm) above this point.
INSTALLATION STEP 4
Position the Opener
Follow instructions which apply to your door type as
illustrated.
SECTIONAL DOOR OR ONE-PIECE DOOR WITH
TRACK
A 2x4 laid flat is convenient for setting an ideal
door-to-rail distance.
• Remove foam packaging.
• Raise the opener onto a stepladder. You will need help
at this point if the ladder is not tall enough.
• Open the door all the way and place a 2x4 laid flat on
the top section beneath the rail.
• If the top section or panel hits the trolley when you raise
the door, pull down on the trolley release arm to
disconnect inner and outer sections. Slide the outer
trolley toward the motor unit. The trolley can remain
disconnected until Installation Step 12 is completed.
Trolley
Release Arm
ENGAGED RELEASED
Rail
Door 2x4 is used to determine
the correct mounting height
from ceiling.
Header
Bracket
Top of Door
2x4 is used to determine
the correct mounting height
from ceiling.
To prevent damage to garage door, rest garage door opener
rail on 2x4 placed on top section of door.

Measure
Distance
Lag Screws
5/16"-18x1-7/8"
Structural
Supports
Bracket
(Not Provided)
Lag Screws
5/16"-18x1-7/8"
(Not Provided)
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
— FINISHED CEILING —
Hidden
Support
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
Lag Screws
5/16"-18x1-7/8"
(Not Provided)
Bolt 5/16"-18x7/8"
Lock Washer 5/16"
Nut 5/16"-18
FINISHED CEILING
12
INSTALLATION STEP 5
Hang the Opener
Three representative installations are shown. Yours may be
different. Hanging brackets should be angled (Figure 1) to
provide rigid support. On finished ceilings (Figure 2 and
Figure 3), attach a sturdy metal bracket to structural
supports before installing the opener. This bracket and
fastening hardware are not provided.
1. Measure the distance from each side of the motor unit to
the structural support.
2. Cut both pieces of the hanging bracket to required
lengths.
3. Drill 3/16" pilot holes in the structural supports.
4. Attach one end of each bracket to a support with 5/16"-
18x1-7/8" lag screws.
5. Fasten the opener to the hanging brackets with 5/16"-
18x7/8" hex bolts, lock washers and nuts.
6. Check to make sure the rail is centered over the door (or
in line with the header bracket if the bracket is not
centered above the door).
7. Remove the 2x4. Operate the door manually. If the door
hits the rail, raise the header bracket.
8. Grease the top and underside of the rail surface where
the trolley slides with rail grease.
NOTE: DO NOT connect power to opener at this time.
Lag Screw 5/16"-18x1-7/8"
Hex Bolt
5/16"-18x7/8" Nut 5/16"-18 Lock Washer 5/16"
HARDWARE SHOWN ACTUAL SIZE
Figure 1
Figure 2
Figure 3
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.

KG
1
3
9
7
5
KG
1
3
9
7
5
13
INSTALLATION STEP 6
Install the Door Control
Locate door control within sight of door at a minimum
height of 5 feet (1.5 m) where small children cannot reach,
and away from moving parts of door and door hardware.
The installation surface must be smooth and flat. If
installing into drywall (Figure 1), drill 5/32" holes and use
anchors provided. For pre-wired installations (as in new
home construction), it may be mounted to a single gang
box (Figure 2). NOTE: After installation, a green or amber
indicator light behind the cover will indicate proper
connection. If not lit, the Lock and Light features will not
function (reverse wires to correct).
1. Strip 7/16" (11 mm) of insulation from one end of bell
wire and connect to the two screw terminals on back of
door control by color: white wire to WHT and white/red
wire to the RED (Figure 3).
2. Remove cover by gently prying at slot in the top of the
cover with a small flat head screwdriver (Figure 4).
Fasten with 6ABx1-1/4" self-tapping screws (drywall
installation) or 6-32x1" machine screws (into gang box)
as follows:
• Drill and install bottom screw, allowing 1/8"
(3 mm) to protrude above wall surface.
• Position bottom of door control on screw head and
slide down to secure. Adjust screw for snug fit.
• Install top screw with care to avoid cracking plastic
housing. Do not overtighten.
• Insert bottom tabs and snap on cover.
NOTE: The push bar may stick if the door control is not
mounted on a smooth surface. If a click is not heard
when pressing the push bar, loosen the two mounting
screws or relocate the door control to a smoother
surface.
3. (Standard installation only) Run bell wire up wall and
across ceiling to motor unit. Use insulated staples to
secure wire in several places. Do not pierce wire with a
staple, creating a short or open circuit.
4. Strip 7/16" (11 mm) of insulation from end of bell wire.
Connect bell wire to the quick-connect terminals as
follows: white to white and white/red to red (Figure 5).
NOTE: When connecting multiple door controls to the
opener, twist same color wires together. Insert wires into
quick-connect holes: white to white and red/white to red.
5. Use tacks or staples to permanently attach entrapment
warning label to wall near door control, and manual
release/safety reverse test label in a prominent location
on inside of garage door.
NOTE: DO NOT connect power and operate opener at this
time. The trolley will travel to the full open position but will
not return to the close position until the sensor beam is
connected and properly aligned.
To release or insert wire,
push in tab with screwdriver t
Door Control
Connections
7/16" (11 mm)
Strip wire 7/16" (11 mm)
Red Grey
White
LOCK
LIGHT
Figure 4
REMOVE COVER
Bell Wire
Terminal
Screws
Bottom Mounting Hole
Top Mounting Hole
Drywall Anchors
Insulated
Staples
Screw 6ABx1-1/4"
(standard installation)
Screw 6-32x1"
(pre-wired)
HARDWARE SHOWN ACTUAL SIZE
Figure 2
To Replace
Insert Bottom Tabs First
PRE-WIRED
INSTALLATION
LOCK
LIGHT
LOCK
LIGHT
To Replace
Insert Bottom Tabs First
Figure 1
STANDARD
INSTALLATION
24 Volt
2-Conductor
Bell Wire in
Gang Box
Figure 5
Figure 3 MULTI-FUNCTION
DOOR CONTROL (BACK)
To prevent possible SERIOUS INJURY or DEATH from
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 DEATH from 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 completely closed.
NEVER permit anyone to cross path of closing garage door.

Lens
Hinge
100 Watt (Max)
Standard Light Bulb
Release Tab
100 Watt (Max)
Standard Light Bulb
14
INSTALLATION STEP 7
Install the Light
• Press the release tabs on both sides of lens. Gently
rotate lens back and downward until the lens hinge is in
the fully open position. Do not remove the lens.
• Install a 100 watt maximum light bulb in each socket.
Light bulb size should be A19, standard neck only. The
lights will turn ON and remain lit for approximately 4-1/2
minutes when power is connected. Then the lights will
turn OFF..
• Reverse the procedure to close the lens.
• Use A19, standard neck garage door opener bulbs for
replacement.
NOTE: Use only standard light bulbs. The use of short
neck or speciality light bulbs may overheat the endpanel or
light socket.
INSTALLATION STEP 8
Attach the Emergency Release Rope
and Handle
• Thread one end of the rope through the hole in the top of
the red handle so “NOTICE” reads right side up as
shown. Secure with an overhand knot at least 1" (2.5 cm)
from the end of the rope to prevent slipping.
• Thread the other end of the rope through the hole in the
release arm of the outer trolley.
• Adjust rope length so the handle is 6 feet (1.83 m) above
the floor. Ensure that the rope and handle clear the tops
of all vehicles to avoid entanglement. Secure with an
overhand knot.
NOTE: If it is necessary to cut the rope, heat seal the cut
end with a match or lighter to prevent unraveling.
NOTICE
Overhand
Knot
Emergency
Release Handle
Overhand
Knot
Trolley
Release Arm
Rope
To prevent possible OVERHEATING of the endpanel or light
socket:
• DO NOT use short neck or specialty light bulbs.
• DO NOT use halogen bulbs. Use ONLY incandescent.
To prevent damage to the opener:
• DO NOT use bulbs larger than 100W.
• ONLY use A19 size bulbs..
To prevent possible SERIOUS INJURY or DEATH from a falling
garage door:
• If possible, use emergency release handle to disengage
trolley ONLY when garage door is CLOSED. Weak or broken
springs or unbalanced door could result in 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
becomes untied, you could fall.

15
INSTALLATION STEP 9
Electrical Requirements
To avoid installation difficulties, do not run the opener
at this time.
To reduce the risk of electric shock, 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 fit into the outlet you have, contact a qualified
electrician to install the proper outlet.
If permanent 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:
• Remove the motor unit cover screws and set the cover
aside.
• Remove the attached 3-prong cord.
• Connect the black (line) wire to the screw on the brass
terminal; the white (neutral) wire to the screw on the
silver terminal; and the ground wire to the green ground
screw.
The opener must be grounded.
• Reinstall the cover.
To avoid installation difficulties, do not run the opener
at this time.
RIGHT WRONG
Ground Tab
Green
Ground Screw
Ground Wire
Black Wire
PERMANENT WIRING
CONNECTION
White Wire
Black
Wire
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fire:
• Be sure power is not connected to the opener, and
disconnect power 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.

16
Invisible Light Beam
Protection Area
Safety Reversing Sensor
6" (15 cm) max. above floor Safety Reversing Sensor
6" (15 cm) max. above floor
Facing the door from inside the garage
INSTALLATION STEP 10
Install The Protector System®
The safety reversing sensor must be connected and
aligned correctly before the garage door opener will
move in the down direction.
IMPORTANT INFORMATION ABOUT
THE SAFETY REVERSING SENSOR
When properly connected and aligned, the sensor will
detect an obstacle in the path of its electronic beam. The
sending eye (with an amber indicator light) transmits an
invisible light beam to the receiving eye (with a green
indicator light). If an obstruction breaks the light beam
while the door is closing, the door will stop and reverse to
full open position, and the opener lights will flash 10 times.
The units must be installed inside the garage so that the
sending and receiving eyes face each other across the
door, no more than 6" (15 cm) above the floor. Either can
be installed on the left or right of the door as long as the
sun never shines directly into the receiving eye lens.
The mounting brackets are designed to clip onto the track
of sectional garage doors without additional hardware.
If it is necessary to mount the units on the wall, the
brackets must be securely fastened to a solid surface such
as the wall framing. Extension brackets (see accessories)
are available if needed. If installing in masonry
construction, add a piece of wood at each location to avoid
drilling extra holes in masonry if repositioning is necessary.
The invisible light beam path must be unobstructed. No
part of the garage door (or door tracks, springs, hinges,
rollers or other hardware) may interrupt the beam while the
door is closing.
Be sure power is not connected to the garage door opener
BEFORE installing the safety reversing sensor.
To prevent SERIOUS INJURY or DEATH from a closing garage
door:
• Correctly connect and align the safety reversing sensor. This
required safety device MUST NOT be disabled.
• Install the safety reversing sensor so beam is NO HIGHER
than 6" (15 cm) above garage floor.

17
DOOR TRACK MOUNT (RIGHT SIDE)
Indicator
Light
Lens
Lip
Sensor
Bracket
Door
Track
FLOOR MOUNT (RIGHT SIDE)
WALL MOUNT (RIGHT SIDE)
Indicator
Light
Sensor
Bracket
Lens
Extension
Bracket
(See Accessories)
Inside
Garage
Wall
(Provided with
Extension
Bracket)
(Provided with
Extension Bracket)
Figure 1
Figure 2
Figure 3
Figure 4
WALL MOUNT (RIGHT SIDE)
Attach with
Concrete Anchors
(Not Provided)
Inside
Garage
Wall
Sensor
Bracket
Lens Indicator
Light
Inside
Garage
Wall
Indicator
Light Sensor
Bracket
Lens
Lag Screws
(Not Provided)
Fasten Wood Block to Wall with
Lag Screws (Not Provided)
INSTALLING THE BRACKETS
Be sure power to the opener is disconnected. Install
and align the brackets so the sensors will face each other
across the garage door, with the beam no higher than 6"
(15 cm) above the floor. They may be installed in one of
three ways, as follows.
Garage door track installation (preferred):
• Slip the curved arms over the rounded edge of each
door track, with the curved arms facing the door. Snap
into place against the side of the track. It should lie flush,
with the lip hugging the back edge of the track, as shown
in Figure 1.
If your door track will not support the bracket securely, wall
installation is recommended.
Wall installation (Figure 2 & 3):
• Place the bracket against the wall with curved arms
facing the door. Be sure there is enough clearance for
the sensor beam to be unobstructed.
• If additional depth is needed, an extension bracket (see
accessories) or wood blocks can be used.
• Use bracket mounting holes as a template to locate and
drill (2) 3/16" diameter pilot holes on the wall at each
side of the door, no higher than 6" (15 cm) above
the floor.
• Attach brackets to wall with lag screws (Not provided).
• If using extension brackets or wood blocks, adjust right
and left assemblies to the same distance out from the
mounting surface. Make sure all door hardware
obstructions are cleared.
Floor installation (Figure 4):
• Use wood blocks or extension brackets (see
accessories) to elevate sensor brackets so the lenses
will be no higher than 6" (15 cm) above the floor.
• Carefully measure and place right and left assemblies at
the same distance out from the wall. Be sure all door
hardware obstructions are cleared.
• Fasten to the floor with concrete anchors as shown.
Wing Nut
1/4"-20
Staples
Carriage Bolt
1/4"-20x1/2"
HARDWARE SHOWN ACTUAL SIZE

Invisible Light Beam
Protection Area
Connect Wire to
Quick-Connect Terminals
Bell Wire
Bell Wire Finished
Ceiling
Quick-Connect Terminals
1. Strip wire 7/16"
(11 mm)
2. Twist like colored
wires together
7/16"
(11 mm)
Safety Reversing Sensor
Safety Reversing Sensor
3. To insert or release
wire, push in tab with
screwdriver tip
Red Grey
White
18
Carriage Bolt
1/4"-20x1/2" Lens
Wing Nut
1/4"-20
Figure 5MOUNTING AND WIRING THE SAFETY REVERSING
SENSORS
• Slide a 1/4"-20x1/2" carriage bolt head into the slot on
each sensor. Use wing nuts to fasten sensors to
brackets, with lenses pointing toward each other across
the door. Be sure the lens is not obstructed by a bracket
extension (Figure 5).
• Finger tighten the wing nuts.
• Run the wires from both sensors to the opener. Use
insulated staples to secure wire to wall and ceiling.
• Strip 7/16" (11 mm) of insulation from each set of wires.
Separate white and white/black wires sufficiently to
connect to the opener quick-connect terminals. Twist like
colored wires together. Insert wires into quick-connect
holes: white to white and white/black to grey (Figure 6).
ALIGNING THE SAFETY REVERSING SENSORS
• Plug in the opener. The indicator lights in both the
sending and receiving eyes will glow steadily if wiring
connections and alignment are correct.
The sending eye amber indicator light will glow regardless
of alignment or obstruction. If the green indicator light in the
receiving eye is off, dim, or flickering (and the invisible light
beam path is not obstructed), alignment is required.
• Loosen the sending eye wing nut and readjust, aiming
directly at the receiving eye. Lock in place.
• Loosen the receiving eye wing nut and adjust sensor
until it receives the sender’s beam. When the green
indicator light glows steadily, tighten the wing nut.
TROUBLESHOOTING THE SAFETY REVERSING
SENSORS
1. If the sending eye indicator light does not glow steadily
after installation, check for:
• Electric power to the opener.
• A short in the white or white/black wires. These can
occur at staples, or at opener connections.
• Incorrect wiring between sensors and opener.
• A broken wire.
2. If the sending eye indicator light glows steadily but the
receiving eye indicator light doesn’t:
• Check alignment.
• Check for an open wire to the receiving eye.
3. If the receiving eye indicator light is dim, realign either
sensor.
NOTE: When the invisible beam path is obstructed or
misaligned while the door is closing, the door will reverse.
If the door is already open, it will not close. The opener
lights will blink 10 times. See page 16.
Figure 6

19
INSTALLATION STEP 11
Fasten the Door Bracket
Follow instructions which apply to your door type as
illustrated below or on the following page.
A horizontal reinforcement brace should be long
enough to be secured to two or three vertical
supports. A vertical reinforcement brace should cover
the height of the top panel.
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
check with your garage door manufacturer for an opener
installation door reinforcement kit.
NOTE: Many door reinforcement kits provide for direct
attachment of the clevis pin and door arm. In this case you
will not need the door bracket; proceed to Step 12.
SECTIONAL DOORS
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.
2. Position the top edge of the bracket 2"-4" (5-10 cm)
below the top edge of the door, OR directly below any
structural support across the top of the door.
3. Mark, drill holes and install as follows, depending on
your door’s construction:
Metal or light weight doors using a vertical angle iron
brace between the door panel support and the door
bracket:
• Drill 3/16" fastening holes. Secure the door bracket using
the two 1/4"-14x5/8" self-threading screws. (Figure 2A)
• Alternately, use two 5/16" bolts, lock washers and nuts
(not provided). (Figure 2B)
Metal, insulated or light weight factory reinforced
doors:
• Drill 3/16" fastening holes. Secure the door bracket using
the self-threading screws. (Figure 3)
Wood Doors:
• Use top and bottom or side to side door bracket holes.
Drill 5/16" holes through the door and secure bracket
with 5/16"x2" carriage bolts, lock washers and nuts (not
provided). (Figure 4)
NOTE: The 1/4"-14x5/8" self-threading screws are not
intended for use on wood doors.
Door
Bracket
Vertical
Centerline
of Garage Door
UP
Vertical
Reinforcement
Self-Threading
Screw
1/4"-14x5/8"
Self-Threading
Screw
1/4"-14x5/8"
UP
Self-Threading
Screw
1/4"-14x5/8"
Vertical
Centerline
of Garage Door
UP
Inside Edge
of Door or
Reinforcement Board
Bolt
5/16"x2"
(Not Provided)
Vertical
Centerline
of Garage
Door
Figure 1
Figure 2A
Figure 3
Figure 4
Figure 2B
HARDWARE
SHOWN
ACTUAL SIZE
Vertical
Centerline
of Garage
Door
Door
Bracket
Location
Header
Bracket
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC.).
(NOT PROVIDED)
Door
Bracket
Nut
5/16"-18
Bolt
5/16"-18x2"
Lock Washer
5/16"
UP
Vertical
Reinforcement
(Not Provided)
Vertical
Centerline
of Garage Door
Fiberglass, aluminum or lightweight steel garage doors WILL
REQUIRE reinforcement BEFORE installation of door bracket.
Contact your door manufacturer for reinforcement kit.

20
Header Wall
Vertical
Centerline of
Garage Door
Finished Ceiling
Optional
Placement
of Door
Bracket
Header
Bracket
Door
Bracket
2x4 Support
For a door with no exposed framing,
or for the optional installation, use
lag screws 5/16"x1-1/2" (Not Provided)
to fasten door bracket.
METAL DOOR
Top of Door
(Inside
Garage)
Door
Bracket
Optional
Placement
Top Edge
of Door
Self-Threading
Screw
1/4"-14x5/8"
Door
Bracket
Top of Door
(Inside
Garage)
Carriage Bolt
5/16"x2"
(Not Provided)
Optional
Placement
Lock
Washer
5/16"
Nut
5/16"-18
Top Edge
of Door
WOOD DOOR
HORIZONTAL AND VERTICAL
REINFORCEMENT IS NEEDED
FOR LIGHTWEIGHT GARAGE
DOORS (FIBERGLASS,
ALUMINUM, STEEL, DOORS
WITH GLASS PANEL, ETC.).
(NOT PROVIDED)
ONE-PIECE DOORS
Please read and comply with the warnings and
reinforcement instructions on the previous page. They
apply to one-piece doors also.
• Center the door bracket on the top of the door, in line
with the header bracket as shown. Mark either the left
and right, or the top and bottom holes.
• Metal Doors: Drill 3/16" pilot holes and fasten the
bracket with the 1/4"-14x5/8" self-threading screws
provided.
• Wood Doors: Drill 5/16" holes and use 5/16"x2" carriage
bolts, lock washers and nuts (not provided) or 5/16"x1-
1/2" lag screws (not provided) depending on your
installation needs.
NOTE: The door bracket may be installed on the top edge
of the door if required for your installation. (Refer to the
dotted line optional placement drawing.)
Self-Threading Screw
1/4"-14x5/8"
HARDWARE SHOWN
ACTUAL SIZE