Chamberlain 1280-298LMC - 1/2 HP User manual

TM
Garage Door Opener
Model 1280-298LMC
- 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 under the light lens on the left side of
your opener.

Start by reviewing these important safety alert symbols
2
CONTENTS PAGE
A review of safety alert symbols ...............................2
You'll need tools........................................................3
Safety information regarding garage door locks
and ropes...............................................................3
Testing your garage door for sticking, binding
and balance ...........................................................3
llustration of sectional door installation ....................4
Illustration of one-piece door installation...................4
Carton inventory........................................................5
Hardware inventory...................................................5
Assembly Section - Pages 6 – 7
Attach T-rail to opener ............................................6
Set the belt tension .................................................6
Attach belt cap retainer...........................................7
Installation safety instructions.................................7
Installation Section - Pages 8 – 23
Determine header bracket location
Sectional door.......................................................8
One-piece door .....................................................9
Install header bracket............................................10
Attach the T-rail to header bracket........................11
Position the opener...............................................12
Hang the opener ...................................................13
Install the door control...........................................14
Install the lights and lenses...................................15
Attach manual release rope and handle ...............15
CONTENTS PAGE
Electrical requirements .........................................16
The Protector System®safety reversing
sensor information ................................................17
Install the safety reversing sensor ..................18, 19
Fasten door bracket (sectional door) ....................20
Fasten door bracket (one-piece door)...................21
Connect door arm to trolley (sectional door).........22
Connect door arm to trolley (one-piece door) .......23
Adjustment Section - Pages 24 – 26
Travel limit adjustments ........................................24
Force adjustments ................................................25
Test the Protector System®...................................26
Test the safety reverse system.............................26
Operation safety instructions ..................................27
Care of your opener................................................27
Maintenance schedule............................................27
Operation of your opener........................................28
Receiver & remote control programming ................29
Having a problem?............................................30, 31
Repair parts, rail assembly .....................................32
Repair parts, installation .........................................32
Repair parts, opener assembly...............................33
Accessories.............................................................34
Index .......................................................................35
How to order repair parts ........................................36
Warranty .................................................................36
When you see these Safety Symbols on the following pages, they will alert you to the possibility of
serious injuries or death if you do not comply with the corresponding instructions. The hazard may
come from something mechanical or from electric shock. Read the instructions carefully.
When you see this Safety Symbol 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 corresponding
instructions. Read the instructions carefully.
This garage door opener is designed and tested to offer safe service provided it is installed, operated,
maintained and tested in strict accordance with the safety instructions contained in this manual.
Mechanical Electrical
WARNING WARNING
CAUTION

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
You'll Need Tools
During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.
SECTIONAL DOOR ONE-PIECE DOOR
WARNING CAUTION
3
To avoid damage to the garage door and
opener, disable locks before installing and
operating the opener. Use a wood screw or nail
to hold locks in the "open" (unlocked) position.
Operation at other than 120V 60 Hz will cause
opener malfunction and damage.
An unbalanced garage door might not reverse
when required and someone under the door
could be seriously injured or killed.
If your garage door binds, sticks or is out of
balance, call for professional garage door
service. Garage doors, door springs, cables,
pulleys, brackets and their hardware are under
extreme tension and can cause serious injury
or death. Do not try to loosen, move or adjust
them yourself!
Ropes left on a garage door could cause
someone to become entangled and killed.
Remove all ropes connected to the door before
installing and operating the opener.
Identify the type and height of your door and any
special conditions that exist and any additional
materials that may be required by referring to page 4.
Before you begin, complete the following test to
make sure your door is balanced, and is not
sticking or binding:
• Lift the door about halfway as shown. Release the
door. It should stay in place, supported entirely by
its springs.
• Raise and lower the door to see if there is any
binding or sticking.

4
Safety Reversing Sensor
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum,
door with glass panels, etc.).
See page 20 for details.
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 13.
— — — — — — — —
Door Center
Header Wall
Safety
Reversing
Sensor
Floor must be level
across width of door
Extension Spring
Torsion Spring Access Door
OR
Model 1702LMC Outisde Quick Release
is required if there is no access door.
Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.
You may find it helpful to refer back to this page as you proceed with the installation of your opener.
Sectional Door Installation
Safety
Reversing
Sensor
Header
Wall
Safety
Reversing
Sensor
Access Door
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 13.
Gap between floor
and bottom of door
must not exceed 1/4".
Access
Door
Floor must be level
across width of door
Safety
Reversing Sensor
Safety
Reversing Sensor
One-Piece Door with Track
One-Piece Door Installation without Track

5
Straight Door
Arm Section
Curved Door
Arm Section
Safety Labels
and
Literature
Header Bracket
UP
CEILING MOUNT ONLY
2-Conductor Bell Wire
White & White/Red
Remote Control
Transmitter Visor Clip
Light Lens (2)
Belt Cap Retainer
Door Bracket
One-Piece
T-rail
Styrofoam
Belt
Pulley Bracket
Belt
Trolley
SECURITY✚ 3-Channel
Remote Control (2)
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with
2-Conductor White & White/Black Bell Wire
attached
Safety Sensor
Bracket (2)
Motion Detecting
Door Control Panel
LOCK LIGHT
SECURITY✚
Keyless Entry
Your garage door opener is packaged in two cartons which contain all parts illustrated below. 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
INSTALLATION HARDWARE
Hex Screw 5/16"-18x7/8" (4)
Hex Screw #8x3/8" (2)
Lag Screw 5/16"-9x1-5/8" (2)
Lag Screw 5/16"-18x1-7/8" (2)
Carriage Bolt 5/16"-18x2-1/2" (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 (6)
Lock Washer 5/16" (6)
Screw 6ABx1-1/4" (2)
Screw 6-32x1" (2)
Insulated Staples (10)
Ring Fastener (3)
Dry Wall Anchors (2)
Rope
Handle
Rail Grease
SAFETY REVERSING SENSOR
INSTALLATION HARDWARE
Carriage Bolt 1/4"-20x1/2" (2)
Wing Nut (2)
Insulated Staples (20)

ASSEMBLY STEP 1
Attach the T-Rail To the Opener
To fasten rail, use only those screws mounted
in the top of the opener. Any other screws will
cause serious damage to the opener.
6
• Remove the two washered screws mounted in top
of opener.
• Align T-rail and styrofoam over opener sprocket.
• Cut tape from T-rail, belt and styrofoam.
• REMOVE STYROFOAM.
• Insert both washered screws through the T-rail into
the opener. Tighten both screws securely .
USE ONLY THESE SCREWS! Any other screws
will cause serious damage to the opener.
Position belt over the opener sprocket.
USE ONLY THIS
TYPE AND SIZE
SCREW
Styrofoam
Belt
T-Rail
Hole
Washered Screw
5/16"-18x1/2"
Washered Screw
5/16"-18x1/2"
T-Rail
Hole
Opener
Sprocket
Belt
T-Rail
Hole
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 A). Do not use any tools.
• Insert a screwdriver tip into one of the nut ring
slots and brace it firmly against the trolley
(Figure B).
• 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 C).
This extends the spring for optimum belt tension.
CAUTION
Assembly Section: Pages 6 - 7
Trolley
Threaded
Shaft
Spring
Trolley Nut
Trolley
Nut
Ring
Trolley
Threaded
Shaft
Nut Ring
Slots
Trolley
Square End
Figure A
Figure B
Nut Ring Trolley Nut Ring Trolley
1" 1-1/4"
BEFORE AFTER RELEASE
Figure C

Assembly Step 3
Attach the Belt Cap Retainer
7
IMPORTANT INSTALLATION INSTRUCTIONS
To reduce the risk of severe injury or death to persons:
1. READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.
2. Install only on a properly balanced and lubricated garage door. An improperly balanced door
may not reverse and could result in severe injury or death. Repairs to cables, spring assemblies
and other hardware must be made by a professional service person before installing opener.
3. Disable all locks and remove all ropes connected to the garage door before installing the opener.
Ropes connected to a garage door can cause entanglement and death.
4. If possible, install door opener 7 feet or more above floor with the manual release handle
mounted 6 feet above the floor.
5. Do not connect the opener to power source until instructed to do so.
6. Locate the Door Control within sight of the door at a minimum height of 5 feet where small
children cannot reach and away from all moving parts of the door.
7. Install the User Safety Instruction Label on the wall adjacent to the control button and the
Maintenance Instruction Label in a prominent location on the inside of the garage door.
8. Upon completion of the installation, the door must reverse when it comes in contact with a
one-inch high object or a 2x4 laid flat on the floor.
9. Do not wear watches, rings or loose clothing while installing or servicing an opener. Jewelry or
loose clothing can be caught in the mechanism of the garage door or the opener.
• Position the belt cap retainer over the
opener sprocket so the two holes in cap align
with the two holes in mounting plate. Attach
with #8x3/8" hex screws provided.
Hex Screws
# 8 x 3/8" Belt Cap
Retainer
Opener Sprocket
Mounting Plate
WARNING WARNING
Hex Screw
#8x3/8"
Hardware Shown Actual Size
You have now finished assembling your garage door opener. Please read the following
warnings before proceeding to the installation section:
Serious injury can result if fingers become
entangled in moving opener sprocket. Attach
belt cap retainer securely. Never operate
opener while your hand is near the opener
sprocket.
WARNING

• Open your door to the highest
point of travel as shown. Draw
an intersecting horizontal line
on the header wall 2" above
the high point. This height will
provide travel clearance for the
top edge of the door.
Header
Wall
Ceiling
Track
Highest Point
of Travel
Door
2"
8
Proceed to Step 2, page 10.
Door
Track
Header
Wall
Highest Point
of Travel
2"
Vertical
Guideline
Finished
Ceiling
Vertical
Guideline
Header
Wall 2x4 Structural
Supports
SECTIONAL Doors and
ONE-PIECE Door With Track
• Close the door and mark the inside
vertical centerline of the garage door.
• Extend the line onto the header wall
above the door.
Remember, you can fasten the
header bracket within 4 feet to 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 (refer to page 10)
when clearance is minimal. (It may
be mounted on the wall upside down
if necessary, to gain approximately
1/2".)
If you need to install the header bracket
on a 2x4 (on wall or ceiling), use lag
screws (not supplied) to securely fasten
the 2x4 to structural supports.
Installation Section: Pages 8 – 23
Sectional door with
curved track One-piece door with horizontal track
Installation Step 1
Determine Header Bracket Location
Installation procedures vary according to garage
door types. Follow the instructions which apply to
your door.
If the header bracket is not rigidly fastened to
a structural support on the header wall or
ceiling, the safety reverse system may not
work properly (see page 26). The door might
not reverse when required, and could cause
serious injury or death.
The garage door springs, cables, pulleys,
brackets and their hardware are under extreme
tension. Do not attempt to loosen, move or
adjust them yourself. Serious personal injury
or death could result. Call for professional
garage door service.
WARNING

9
Header Wall Vertical
Centerline
Vertical
Centerline of
Garage Door
2x4
Unfinished
Ceiling
Structural
Supports
2x4
OPTIONAL CEILING MOUNT
• Close the door and mark the
inside vertical centerline of
your garage door. Extend the
line onto the header wall
above door.
If headroom clearance is
minimal, you can install the
header bracket on the ceiling.
See page 10.
• If you need to install the
header bracket on a 2x4 (on
wall or ceiling), use lag screws
(not supplied) to securely
fasten the 2x4 to structural
supports as shown.
EXAMPLE
Distance from top of door
(at highest point of travel) to floor...........................92"
Actual height of door.............................................-88"
Remainder................................................................4"
Add.........................................................................+8"
Bracket height on header wall..............................=12"
(Measure UP from top of CLOSED door.)
Proceed to Step 2, page 10.
Header Wall
Highest Point
of Travel
Door
Distance
Jamb
Hardware
Door
Highest Point
of Travel
Header
Wall
Pivot
Distance
ONE-PIECE Door Without Track
• Open your door to the highest point of travel as
shown. Measure the distance from the top of the
door to the floor. Subtract the actual height of the
door. Add 8" to the remainder. (See Example).
• Close the door and draw an intersecting horizontal
line on the header wall at the determined height.
If the total number of inches exceeds the height
available in your garage, use the maximum
height possible, or refer to page 10 for ceiling
installation.
One-piece door without track
jamb hardware One-piece door without track pivot hardware
Read the Safety Instructions on page 8. They also apply to doors without tracks.

UP
Lag Screws
5/16"-9x1-5/8"
Garage
Door
Vertical
Center Line
Header
Wall
Finished
Ceiling
Header
Bracket
6" Maximum
Vertical
Center Line
Door
Spring
Lag Screws
5/16"-9x1-5/8"
Highest
Point of Travel
(of Garage Door)
Vertical
Center
Line
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
Center
Line
10
UP
CEILING MOUNT ONLY
Ceiling Mounting Holes
The nail hole is for positioning only.
You must use lag screws to mount
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.
Fasten the Header Bracket to the Wall
• Center the bracket on the vertical guideline with
the bottom edge of the bracket on the horizontal
line as shown (with the arrow pointing toward the
ceiling).
• Mark either 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.
• Extend the vertical guideline onto the ceiling as
shown.
• Center the bracket on the vertical mark, no more
than 6" 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 holes designated for ceiling mount only. Drill
3/16" pilot holes and fasten bracket securely to a
structural support with the hardware provided.
Fasten the Header Bracket to the Ceiling
Installation Step 2
Install the Header Bracket
Lag Screw
5/16"-9x1-5/8"
Hardware Shown Actual Size

Header
Bracket
Belt Pulley
Bracket
Temporary
Support
Header Wall
Garage
Door
,
Liftmaster Synchro Drive
Tee Rail to Header Bracket
5/16/92
T-rail
Clevis Pin
5/16"x2-3/4 "
Ring Fastener
Header Bracket
Belt Pulley
Bracket
T-rail
• Position the opener on the garage floor below the
header bracket. Use packing material as a
protective base.
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 T-rail to clear the
spring.
• Position the belt pulley bracket against the header
bracket.
• Align the bracket holes and join with a clevis pin as
shown.
• Insert a ring fastener to secure.
11
Installation Step 3
Attach the T-rail to the Header Bracket
Clevis Pin
5/16"x2-3/4" Ring Fastener
Hardware Shown Actual Size

Installation Step 4
Position the Opener
Follow instructions which apply to your door type
as illustrated. To prevent damage to steel, aluminum,
fiberglass or glass panel doors, do not rest the
opener on the door without using a 2x4.
SECTIONAL Door & ONE-PIECE Door with Track
T-rail 2x4
Laid Flat
Door
Stepladder
ONE-PIECE Door without Track
• With the door fully open and parallel to the floor,
measure the distance from the floor to the top of
the door.
• Using a stepladder as a support, raise the opener
to the same distance as the door from the floor (it
will be at a slight angle as shown).
• The top of the door should be level with the top of
the opener. Do not position the opener more than
2" above this point.
Top of Opener
Top of Door
Stepladder
Header
Bracket
12
CAUTION
A 2x4 laid flat is convenient for setting an ideal
door-to-T-rail distance.
• 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 T-rail.
• If the top panel hits the trolley when you raise
the door, pull down on the trolley release arm
to disconnect inner and outer sections. The
trolley can remain disconnected until Step 12
is completed.
Trolley
Trolley
Release Arm

Installation Step 5
Hang the Opener
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 sturdy metal
bracket to structural supports before installing the
opener. The bracket and fastening hardware are not
supplied.
• Measure the distance from each side of the opener
to the structural support.
• Cut both pieces of the hanging bracket to required
lengths.
• Drill 3/16" pilot holes in the structural supports.
• Attach one end of each bracket to a support with
5/16"-18x1-7/8" lag screws.
• Fasten the opener to the hanging brackets with
5/16"-18x7/8" hex screws, lock washers and nuts.
• Check to make sure the T-rail is centered over the
door (or in line with the header bracket if the
bracket is not centered above the door).
• Remove the 2x4. Operate the door manually. If the
door hits the rail, raise the header bracket.
Measure
Distance
Lag Screws
5/16"-18x1-7/8"
5/16"-18x7/8"
Hex Screws
5/16" Lock Washers
5/16"-18 Nuts
Structural
Supports
Bracket
(Not Supplied)
Lag Screws
5/16"-18x1-7/8"
(Not Supplied)
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
— FINISHED CEILING —
Hidden
Support
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
13
The opener could fall and injure someone if it
is not properly secured. Fasten the opener
securely to structural supports of the garage.
Hex Screw
5/16"-18x7/8" Nut 5/16"-18 Lock Washer 5/16"
Lag Screw
5/16"-18x1-7/8"
Hardware Shown Actual Size
WARNING
Figure 1
Figure 2
Grease the top and underside
of the rail surface where
the trolley slides with
rail grease.

Outside Keylock Accessory Connections
To opener terminal screws: white to 2; white/red to 1
WARNING
DO NOT CONNECT TO LIVE ELECTRICAL WIRING.
CONNECT ONLY TO 24 VOLT LOW VOLTAGE
WIRES. CONNECTION TO LIVE WIRES OR HIGHER
VOLTAGE MAY CAUSE SERIOUS INJURY FROM
SHOCK, BURN OR ELECTROCUTION.
Children operating or playing with a garage door
opener can injure themselves or others. The garage
door could close and cause serious injury or death.
Do not allow children to operate the push button(s)
or the remote control transmitter(s).
A moving garage door could injure someone under
it. Activate the opener only when the door is
properly adjusted, you can see it clearly, and there
are no obstructions to door travel.
Do NOT connect the power and operate the
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. See Safety Reversing Sensor
Instructions beginning on page 17.
Installation Step 6
Install the Door Control Panel
14
Opener
Terminal Screws
Antenna
RIGHT PANEL OF OPENER
KG KG
1
3
9
75
1
3
9
75
23
1
2-Conductor
Bell Wire
Push Bar
Light Button
Lock
Button
LOCK LIGHT
1
RED
2
WHITE
Door
Control
Terminal
Screws
2-Conductor
Bell Wire
LOCK LIGHT
To Replace
Insert Top
Tabs First
STANDARD WALL MOUNT
Detector
Switch
Push Bar Cover ON
OFF
Locate the door control within sight of the door at a
minimum height of 5 feet where small children cannot
reach, and away from all moving parts of the door and
door hardware.
The door control is typically attached directly to the wall.
If installing into drywall, drill 5/32" holes and use the
anchors provided. For pre-wired installations (as in new
home construction) it can be mounted to a standard single
gang box. See illustrations.
1. Strip 1/4" of insulation from one end of the bell wire.
Connect the wire to the two screw terminals on back of
door control: white wire to 2 and white/red wire to 1.
2. Remove the push bar cover by gently prying off the top
edge with a coin or screwdriver. Fasten with 6ABx1-1/4"
self-tapping screws (standard installation) or 6-32x1"
machine screws (pre-wired installation) as follows:
• Install bottom screw, allowing 1/8" to protrude from
the wall.
• Position bottom of door control on screw head and
adjust for snug fit.
• Install top screw with care to avoid cracking plastic
housing.
Do not overtighten.
3. (For standard wall mount only)
Run the bell wire up wall and across ceiling to opener.
Use insulated staples to secure the wire in several
places. Be careful not to pierce the wire with a staple,
creating a short.
4. Connect the bell wire to the terminal screws on the
opener panel: white to 2 and white/red to 1.
5. After testing, replace the cover by inserting top tabs
and snapping into place.
NOTE: After installation, the green indicator light behind the
push bar cover will indicate proper connection.
The automatic light feature will become functional 1-1/2
minutes after power is restored.
6. Attach the User Safety Instruction label to the wall near
the door control, and the Maintenance Instruction label
in a prominent location on the inside of the garage
door.
Page 28 explains how to use the door control.
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
24 Volt
2-Conductor Bell Wire
PRE-WIRED INSTALLATION
LOCK LIGHT
To Replace
Insert Top
Tabs First
Detector
Switch
Push Bar Cover ON
OFF
6ABx1-1/4" Screw
(std installation)
Insulated
Staples
Dry Wall Anchors
Screw 6-32x1" (pre-wired)
Hardware Shown
Actual Size

Watt
x
imum
h
t Bulb
Lens
Guide
e
ns
a
b
Lens Slot
Lens Tab
75 Watt
Maximum
Light Bulb
• Install a 75 watt maximum light bulb in the socket.
The light will turn ON and remain lit for
approximately 4-1/2 minutes when power is
connected. Then the light will turn OFF.
• If the bulbs burn out prematurely due to vibration,
replace with a "Garage Door Opener" bulb.
• Slide lenses into guides. Snap bottom tabs into
lens slots.
• For convenience, the lenses may be installed
after Adjustment Step 4 on page 26.
• Reverse the procedure to remove the lenses.
Installation Step 7
Install the Lights and the Lenses
Installation Step 8
Attach the Manual Release
Rope and Handle
Do not use the red handle to pull the door
open or closed. The rope knot could become
untied and you could fall. Use the manual
release only to disengage the trolley and, if
possible, only when the door is closed.
Garage doors are heavy. If the door is open
when the handle is pulled, the door could
close inadvertently if it is not properly
balanced. Serious injury may result to persons
under the door. Make sure the doorway is clear
of persons and obstructions before pulling
handle when door is open.
• 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" 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 above the
floor. Secure with an overhand knot.
If it is necessary to cut the rope, heat seal the cut end
with a match or lighter to prevent unraveling.
Trolley
NOTICE
Overhand
Knot
Manual
Release Handle
Rope
Overhand
Knot
Trolley
Release Arm
15
WARNING

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.
To avoid installation difficulties, do not run the
opener at this time.
Installation Step 9
Electrical Requirements
Ground Tab
Green
Ground
Screw
Ground Wire
Black
Wire
White Wire
Black
Wire
• To make a permanent connection through the
7/8" diameter hole in the top of the opener
(according to local code):
• Remove the opener 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.
16
To prevent electrocution or fire, installation
and wiring must be in compliance with local
electrical and building codes.
Do NOT use an extension cord, 2-wire adapter,
or change the plug in any way to make it fit
your outlet.
Permanent wiring
connection
Right Wrong
If permanent wiring is required by your local code, refer to the following procedure:
To prevent electrocution, remove power from
the garage door opener and from the circuit
you plan to use for the permanent
connection.
WARNING
WARNING

Without a properly working safety reversing
sensor, persons (particularly children) could be
injured or killed by a closing garage door. Read
and follow all instructions.
To protect small children, install the safety
reversing sensor so that the beam will be no
higher than 4"-6" above the garage floor.
Disconnect power to the garage door opener
before installing the safety reversing sensor.
17
WARNING
Invisible Light Beam
Protection Area
Sensor Beam
4-6" max.
above floor
Sensor Beam
4-6" max.
above floor
Figure 1: Facing the door from inside the garage
The Protector®System
IMPORTANT INFORMATION ABOUT THE SAFETY
REVERSING SENSOR
The safety reversing sensor must be connected
and aligned correctly before the garage door
opener will move in the down direction. This is a
required safety device and cannot be disabled.
When properly connected and aligned, the safety
reversing sensor will detect an obstacle in the path of
its electronic beam. The sending eye (with an orange
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 door control will flash for 5 seconds.
The units must be installed inside the garage so that
the sending and receiving eyes face each other
across the door, between 4 – 6" 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.

Installation Step 10
Install the Safety Reversing Sensor
18
FLOOR MOUNT (Right Side)
WALL MOUNT (Right Side)
DOOR TRACK MOUNT (Right Side)
Indicator
light
Lens
Lip
Sensor
Bracket
Door
Track
Sensor
Bracket
Optional
Extension
Bracket
(See Accessories)
Lens Indicator
light
Attach with
concrete anchors
(not provided)
Inside
Garage
Wall
Indicator
light
Sensor
Bracket
Lens
Optional
Extension
Bracket
(See Accessories)
Inside
Garage
Wall
(Provided with
Extension
Bracket)
(Provided with
Extension Bracket)
(Provided with
Extension Bracket)
(Provided with
Extension
Bracket)
Wing Nut (2) Insulated Staples (20)
Carriage Bolt
1/4"-20x1/2" (2)
Hardware Shown Actual Size
Figure 4
Figure 2
Figure 3
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
from 4 – 6" 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 2.
If your door track will not support the bracket
securely, wall installation is recommended.
Wall installation:
• 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, from 4–6" 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:
• Use wood blocks or extension brackets (see
Accessories) to elevate sensor brackets so the
lenses will be 4-6" 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.

Invisible Light Beam
Protection Area
Sensor
Sensor
Connect Wire to
Opener Terminals
Bell Wire
Bell Wire Finished
Ceiling
OPENER TERMINAL SCREWS
Sensor
Connections
Door Control
Connections
(dotted line) 123
19
Figure 6 Wiring the Safety Sensors
1/4"-20x1/2"
Carriage bolt Lens
Wing nut
Figure 5
MOUNTING AND WIRING THE SAFETY 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. See 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 1/4" of insulation from each set of wires.
Separate white and white/black wires sufficiently to
connect to the opener terminal screws: white to 2
and white/black to 3.
ALIGNING THE SAFETY 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 orange 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 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 screw terminal
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 door control will blink 10 times. See page 17.

Installation Step 11
Fasten Door Bracket
Follow instructions which apply to your door type
as illustrated below or on page 21. To prevent damage to steel, aluminum,
fiberglass or glass panel doors, always
reinforce the inside of the door both vertically
and horizontally with angle iron.
A horizontal brace should be long enough to be secured to 2 vertical supports. A vertical brace should
cover the height of the top panel.
The illustration 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.
• Center the door bracket on the previously marked
vertical guideline used for the header bracket
installation. Note the correct UP placement as
stamped inside the bracket.
• Position the bracket on the face of the door within
the following limits:
A) The top edge of the bracket 2"-4" below the top
edge of the door.
B) The top edge of the bracket directly below any
structural support across the top of the door.
• Mark and drill 5/16" left and right fastening holes.
Secure the bracket as shown in Figure 1 if there is
vertical reinforcement.
If your installation doesn't require vertical reinforce-
ment but does need top and bottom fastening holes
for the door bracket, fasten as shown in Figure 2.
20
Vertical
Guideline Door
Bracket
Nut
5/16"-18
Carriage Bolt
5/16"-18x2-1/2"
Lock
Washer
5/16"
Vertical
Guideline
UP
UP
Door
Bracket
Location
Header
Bracket Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, aluminum, steel,
doors with glass panel, etc).
Vertical
Reinforcement
Door Bracket
Inside Edge
of Door or
Reinforcement Board
SECTIONAL Door Installation Procedure
Carriage Bolt
5/16"-18x2-1/2"
Nut 5/16"-18 Lock Washer 5/16"
Hardware Shown Actual Size
WARNING
Figure 1
Figure 2