Chamberlain Security+ 9500-3K User manual

®
Garage Door Opener
Model 9500-3K
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 side panel of
your opener.
®
The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illlinois 60126-1196
www.chamberlaingroup.com
Complies with UL 325
Regulations effective
January 1, 1993.

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
Illustration of sectional door installation ......................4
Illustration of one-piece door installation.....................5
Carton inventory...........................................................6
Hardware inventory......................................................7
Assembly section – pages 8 - 11
Assemble T-rail..........................................................8
Attach belt pulley bracket ..........................................8
Install trolley...............................................................9
Fasten T-rail to opener ..............................................9
Install belt.................................................................10
Set the belt tension..................................................10
Attach belt cap retainer............................................11
Installation section – pages 11 - 27
Installation safety instructions..................................11
Determine header bracket location
Sectional door........................................................12
One-piece door......................................................13
Install the header bracket........................................14
Attach the T-rail to header bracket..........................15
Position the opener..................................................16
Hang the opener......................................................17
Install the door control ............................................18
Contents Page
Install the lights and lenses......................................19
Attach manual release rope and handle..................19
Electrical requirements.............................................20
The Protector System®.............................................21
Install the safety reversing sensor.....................22, 23
Fasten door bracket (sectional door).......................24
Fasten door bracket (one-piece door).....................25
Connect door arm to trolley (sectional door) ...........26
Connect door arm to trolley (one-piece door)..........27
Adjustment section – pages 28 - 30
Travel limit adjustments ...........................................28
Force adjustments....................................................29
Test the Protector System®......................................30
Test the safety reverse system ...............................30
Operation safety instructions .....................................31
Care of your opener ...................................................31
Maintenance schedule...............................................31
Operation of your opener...........................................32
Receiver and remote control programming...............33
Having a problem?...............................................34, 35
Repair parts, rail assembly.........................................36
Repair parts, installation.............................................36
Repair parts, opener assembly..................................37
Accessories................................................................38
Index...........................................................................39
How to order repair parts ...........................................40
Warranty.....................................................................40
When you see these Safety Symbols on the following pages, they will alert you to the possibility of
serious injury 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
CAUTIONCAUTION

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
3
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.
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.
Identify the type and height of your door and any
special conditions that exist and any additional
materials that may be required.
WARNING CAUTIONCAUTION
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 24 for details.
Support bracket &
fastening hardware
is required.
See page 17.
— — — — — — — —
Door Center
Header Wall
Safety
Reversing
Sensor
Floor must be level
across width of door
FINISHED CEILING
Extension Spring
Torsion Spring
Access Door
OR
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.
Based on your particular requirements, there are
several installation steps which might call for
materials and/or hardware not included in the
carton.
• Step 1, page 12 - Look at the wall or ceiling above
the garage door. The header bracket must be
securely fastened to structural supports.
• Step 5, page 17 - Do you have a finished ceiling in
your garage? If so, a support bracket and
additional fastening hardware may be required.
• Safety reversing sensor, page 21 - Depending
upon garage construction, extension brackets (see
Accessories) or wood blocks may be needed to
fasten sensors to mounting locations.
• Step 10, page 22 - Floor mounting of the safety
reversing sensor will require hardware not
provided.
• Step 11, page 24 - Do you have a steel, aluminum,
fiberglass or glass panel door? If so, horizontal
and vertical reinforcement is required.
• Look at the garage door where it meets the floor.
It must close on the floor all the way across.
Otherwise, the safety reverse system may not
work properly. See page 30. Floor or door should
be repaired.
SECTIONAL Door Installation
• The opener can be installed within 4 feet of the left
or right of the door center if there is a torsion spring
or center bearing plate in the way of the header
bracket or door bracket area. If your door has
extension springs, the opener must be installed in
the center of the door. See pages 12 and 24.
• Do you have an access door in addition to the
garage door? If not, Model 7702CB Outside Quick
Release is required. See page 38.
• If your door is more than 7 feet high, see rail
extension kit listed on page 38.
Belt Pulley
Bracket
Header
Bracket Trolley
Straight
Door
Arm Manual
Release
Rope & Handle
Door Bracket
Garage
Door
Curved
Door
Arm
Garage
Door
Spring
Header
Wall
Closed Position
Belt

Safety Reversing Sensor
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 17.
Safety
Reversing
Sensor
Header
Wall
Access Door
Gap between floor and bottom
of door must not exceed 1/4".
5
Closed Position
Belt
Pulley Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Manual
Release
Rope & Handle
Door
Bracket
Curved
Door
Arm
Header
Wall
Belt
T-rail
Garage
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.
Based on your particular requirements, there are
several installation steps which might call for
materials and/or hardware not included in the carton.
• Step 1, page 13 - Look at the wall or ceiling above
the garage door. The header bracket must be
securely fastened to structural supports.
• Step 5, page 17 - Do you have a finished ceiling in
your garage? If so, a support bracket and additional
fastening hardware (not supplied) may be required.
• Safety reversing sensor, page 21 - Depending on
garage construction, extension brackets (see
Accessories) or wood blocks may be needed to
fasten sensors to mounting locations.
• Step 10, page 22 - Floor mounting of the safety
reversing sensor will require hardware that is not
provided.
• Step 11, page 25 - Generally, a one-piece door
does not require reinforcement. If your door is
lightweight, you can refer to the information
relating to sectional doors on page 24.
• Step 11, page 25 - Depending on your door's
construction, you might need additional mounting
hardware for the door bracket.
• Do you have an access door in addition to the
garage door? If not, Model 7702CB Outside Quick
Release is required. See page 38.
• The gap between the bottom of the garage door
and the floor cannot exceed 1/4". Otherwise, the
safety reverse system may not work properly.
See page 30. The floor or the door should be repaired.
ONE-PIECE Door Installation One-Piece Door without Track
Access
Door
Floor must be level
across width of door
Safety
Reversing Sensor
Safety
Reversing
Sensor
One-Piece Door With Track
Closed Position
Header
Bracket
Belt
Pulley Bracket
Door
Bracket Straight
Door
Arm
Curved
Door Arm
Trolley
Manual Release
Rope & Handle
T-rail
Garage
Door
Belt
Header
Wall

2-Conductor Bell Wire
White & White/Red
Trolley
Header Bracket
Hanging Brackets
Belt
Curved Door
Arm Section Straight Door
Arm Section
Light Lens (2)
Rail Brace (3)
T-rail
Center Section
(each) (2)
T-rail
End Section (2)
UP
CEILING MOUNT ONLY
Motion Detecting
Control Panel
Belt Cap Retainer
SECURITY✚
Keyless Entry
Door Bracket
Belt Pulley
Bracket
SECURITY✚
Multi-Function
Remote Control Transmitter (2)
LOCK LIGHT
SECURITY✚
Mini Remote Control
Safety Labels
and
Literature
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with
2-Conductor White & White/Black Bell Wire
attached
Safety Sensor
Bracket (2)
6
Carton Inventory
Your garage door opener is packaged in one carton which contains all parts illustrated below. If anything is
missing, carefully check the packing material. Parts may be "stuck" in the foam. Hardware for assembly and
installation is shown on page 7.

Lock Washer
5/16" (4)
Nut 5/16"-18 (6)
Clevis Pin
5/16"x2-3/4" (1)
NOTICE
Handle
Insulated
Staples (10)
ASSEMBLY
INSTALLATION
Dry Wall Anchors (2)
Clevis Pin
5/16"x1" (1)
Hex Screw
5/16"-18x7/8" (4)
Rope
Trolley Clip (1)
Lock Nut
1/4"-20x7/16" (12)
Nut
5/16"-18 (4)
Washered Screw
5/16"-18x1/2" (2)
(mounted in opener)
Carriage Bolt
5/16"-18x2-1/2" (2)
Carriage Bolt
1/4"-20x1/2" (12) Master Link (2)
Ring
Fastener (3)
Trolley
Threaded Shaft (1)
Lock Washer
5/16" (6)
Lag Screw
5/16"-9x1-5/8" (2)
SAFETY REVERSING SENSOR
Wing Nut (2) Insulated
Staples (20)
RAIL GREASE
NO. 83A4
Rail Grease
Hex Screw
5/16"-18x7/8" (4)
Carriage Bolt
1/4"-20x1/2" (2)
Spring Nut (1)
Lag Screw
5/16"-18x1-7/8" (2)
Clevis Pin
5/16"x1-1/4" (1)
Screw
6ABx1-1/4" (2) Screw 6-32x1" (2)
7
Group all hardware found in all packages contained in the rail and opener cartons into
the three kits illustrated below.

8
Assembly Step 1
Assemble the T-rail &
Attach the Belt Pulley Bracket
T-RAIL BACK
(TO OPENER)
T-RAIL FRONT
(TO DOOR)
Belt pulley bracket
attaches to FRONT
END of T-rail T-rail
(End Section)
T-rail
(Center Section)
Carriage Bolt
1/4"-20x1/2"
T-rail
(End Section)
Square Carriage
Bolt Hole
1/4" Lock Nut
Bracket
Lock Washer
5/16"
Nut
5/16"-18
Hex Screws
5/16"-18x7/8"
Belt Pulley
Bracket
Bracket & Rail Must Be Aligned
Lock Washer
5/16"
Nut
5/16"-18
Make sure bolt
necks are
seated in the
square holes
and rails are
aligned before
you tighten lock
nuts. (See right
and wrong
views).
Improper
assembly can
cause jerky
trolley
operation, noise
and/or nuisance
door reversals.
To avoid installation difficulties, do not run the garage door opener until instructed to do so.
Assembly Section: Pages 8 – 11
When tightening
the screws, be
sure to keep
bracket parallel
to the rail.
Otherwise, the
rail may bow
when the opener
is operated.
Right Wrong
• Align the 4 T-rail sections on a flat surface
exactly as shown. Center sections are
interchangeable. Front and back sections are
also interchangeable for ease of assembly.
• Insert the carriage bolts so the square bolt
necks seat in the square holes in the T-rail
sections and pass through the round holes in
the rail braces. Assemble lock nuts, ensure
alignment and tighten.
If T-rail is not assembled
exactly as shown, trolley
will not travel smoothly
along length of rail or it
will hit against nuts.
• Position the belt pulley bracket on the front end of
the T-rail as shown. Fasten securely with the
hardware shown.
Right
Wrong
Lock Nut
1/4"-20x7/16" Carriage Bolt
1/4"-20x1/2"
Hex Screw
5/16"-18x7/8" Nut
5/16"-18 Lock Washer
5/16"
Hardware Shown Actual Size

Assembly Step 2
Install the Trolley on the T-rail
9
• As a temporary stop, insert a screwdriver into the
hole in the front end of the T-rail.
• Slide the trolley assembly along the rail to the
screwdriver stop.
If trolley hits against any nuts on the T-rail, the
bolts and nuts were attached from the wrong
side and must be repositioned. Review Step 1.
• Insert a 5/16"-18x7/8" hex screw into the trolley
stop hole in the T-rail as shown. Tighten securely
with a 5/16" lock washer and nut. This screw limits
trolley travel in the DOWN direction.
Trolley
Temporary Stop
Screwdriver
Hex Screw
5/16"-18x7/8"
Trolley
Stop Hole
Lock Washer
5/16"
Nut
5/16"-18
Assembly Step 3
Faster the T-rail to the Opener
• Place the opener on packing material to protect
the cover. For convenience, put a support under
the belt pulley bracket.
• Remove the (2) 5/16"-18x1/2" washered screws
mounted in the top of the opener.
• Align the holes in the back section of the T-rail with
the holes in the opener.
• Fasten the rail with the (2) washered screws
previously removed. Tighten securely.
Remember to use only these screws! Any other
screws will cause serious damage to the opener.
• Insert a 5/16"-18x7/8" hex screw into the cover
protection bolt hole in the T-rail as shown. Tighten
securely with a 5/16" lock washer and nut.
NOTE: This screw prevents trolley over-travel.
Keep a 2" minimum between the trolley and this
screw when adjusting travel limits (see page 28).
Washered Screw
5/16"-18x1/2" USE ONLY THIS
TYPE AND SIZE
SCREW
T-Rail
(Back Section)
Cover Protection
BoltHole
Nut
5/16"-18
Hex Screw
5/16"-18x7/8"
Lock Washer
5/16"
To fasten rail, use only those screws mounted
in the top of the opener. Any other screws will
cause serious damage to the opener.
Lock Nut
1/4"-20x7/16" Carriage Bolt
1/4"-20x1/2"
Hex Screw
5/16"-18x7/8" Nut
5/16"-18 Lock Washer
5/16"
Hardware Shown Actual Size
CAUTIONCAUTION

Assembly Step 4
Install the Belt & Set the Belt Tension
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.
Nut
Ring
Trolley
Threaded
Shaft
Nut Ring
Slots
Trolley
Square End
Opener
Sprocket
10
• Drop the notched side of the trolley clip into the
retaining slot on top of the trolley (see Figure 1).
• Grasp the clip connector at the end
of the belt and slip it through the belt
pulley bracket from behind, around
the pulley and toward the trolley.
• Fasten the belt clip connector to the
trolley clip with a master link:
a. Push pins of master link bar through holes in
trolley clip and belt clip connector.
b. Push master link cap over pins
and past pin notches.
c. Slide clip-on spring over cap and
onto pin notches until both pins are
securely locked in place.
• With the trolley against the screwdriver,
dispense the belt along the rail and
around the opener sprocket. The sprocket
teeth must engage the belt (Figure 2).
• Use the second master link to connect the
belt to the flat end of the trolley threaded shaft
(Figure 1). Check to make sure the belt is not
twisted.
•Remove the screwdriver.
Belt
Pulley
Slip Belt Clip Connector
around Pulley Bracket
from this direction
and attach to trolley clip
Trolley
Clip
Master Link
Clip-On Spring Master
Link Cap
Trolley
Threaded Shaft
Master
Link Bar
Master
Link Bar
Pin Notch
Pin Notch
Belt
Clip Connector
Figure 2
Figure 1
Figure 4
WARNING
• Insert a screwdriver tip into one of the nut ring slots
and brace it firmly against the trolley. (Figure 4)
• 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 5).
This extends the spring for optimum belt tension.
• Insert the trolley threaded shaft through the hole in
the trolley.
• Hold the belt at the trolley shaft to avoid twisting
as you thread the spring/trolley nut by hand on the
shaft until finger tight against the trolley (Figure 3).
Do not use any tools.
Belt Clip
Connector
Trolley
Threaded
Shaft
Spring
Trolley Nut
Trolley Nut Ring Trolley Nut Ring
Trolley
1" 1-1/4"
BEFORE AFTER RELEASE
Figure 5Figure 3

Hex Screws
# 8 x 3/8" Belt Cap
Retainer
Opener Sprocket
Mounting Plate
Assembly Step 5
Attach the Belt Cap Retainer
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.
11
You have now finished assembling your garage door opener. Please read the following
warnings before proceeding to the installation section:
WARNING WARNING
To attach the belt cap retainer:
• 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 Screw
#8x3/8"
Hardware Shown
Actual Size

• 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"
12
Proceed to Step 2, page 14.
Door
Track
Header
Wall
Highest Point
of Travel
2"
Vertical
Guideline
Finished
Ceiling
Vertical
Guideline
Header
Wall 2x4 Structural
Supports
SECTIONAL Door 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 14) 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 as shown
here and on page 13.
Installation Section: Pages 12 – 27
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 30). 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

Header Wall Vertical
Centerline
Vertical
Centerline of
Garage Door
2x4
Unfinished
Ceiling
Structural
Supports
2x4
OPTIONAL CEILING MOUNT
FOR HEADER BRACKET
• 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 14.
• 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 14.
13
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 14 for ceiling
installation.
One-piece door without track
pivot hardware
One-piece door without track
jamb hardware
Read the Safety Instructions on page 12. They also apply to doors without tracks.

Lag Screws
5/16"x9x1-5/8"
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
14
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.
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
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"x9x1-5/8"
Garage
Door
Vertical
Center Line
Header
Wall
Finished
Ceiling
Header
Bracket
6" Maximum
Vertical
Center Line
Door
Spring
• 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.

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
INCREASE
DOWN
TRAVEL
INCREASE
UP
TRAVEL
• 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.
15
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
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 the inner and outer sections. The
trolley can remain disconnected until Step 12 is
completed.
T-rail 2x4
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
Header
Bracket
Top of Door
Stepladder
16
CAUTIONCAUTION
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
17
The opener could fall and injure someone if it
is not properly secured. Fasten the opener
securely to structural supports of the garage.
Figure 1
Figure 2
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
RAIL GREASE
NO. 83A4
Grease the top and
underside of the rail
surface where the
trolley slides with rail
grease.

Installation Step 6
Install the Door Control
18
Opener Terminal Screws
Antenna
Right Panel of Opener
KG KG
1
3
9
75
1
3
9
75
23
1
Push Bar
Light Button
Lock
Button
LOCK LIGHT
1
RED
2
WHITE
Door
Control
Terminal
Screws
2-Conductor
Bell Wire
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 may be mounted to
a standard single gang box. See illustrations.
1. Strip 1/4" of insulation from one end of the bell
wire. Connect wire to the two screw terminals on
the back of the 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 wire in
several places. Be careful not to pierce wire with a
staple, creating a short.
4. Connect the bell wire to the terminal screws on
the opener panel: white to 2; 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.
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.
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 buttons or remote controls.
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.
6ABx1-1/4" Screw
Door Control
Insulated
Staples
Dry Wall
Anchors
Screw 6-32x1"
Hardware Shown
Actual Size
WARNING
LOCK LIGHT
To Replace
Insert Top
Tabs First
STANDARD WALL MOUNT
Detector
Switch
Push Bar Cover ON
OFF
24 Volt
2-Conductor
Bell Wire
PRE-WIRED INSTALLATION
LOCK LIGHT
To Replace
Insert Top
Tabs First
Detector
Switch
Push Bar Cover ON
OFF
Outside Keylock Accessory Connections
To opener terminal screws: white to 2; white/red to 1

• Install a 75 watt maximum light bulb in each
socket. The lights will turn ON and remain lit for
approximately 4-1/2 minutes when power is
connected. Then the lights will turn OFF.
• If the bulbs burn out prematurely due to vibration,
replace them with "Garage Door Opener" bulbs.
• Slide lenses into guides as shown. Snap bottom
tabs into lens slots.
• For convenience, the lenses may be installed
after Adjustment Step 4 on page 30.
• Reverse the procedure to remove the lenses.
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 32 explains how to use the door control.
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
19
75 Watt Max.
Light Bulb
Lens
Guide
Lens Tab
Lens Slot
Lens Tab
75 Watt Max.
Light Bulb
WARNING
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 21.

To prevent electrocution, remove power from
the garage door opener and from the circuit
you plan to use for the permanent connection.
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
type outlet.
To avoid installation difficulties, do not run the
opener at this time.
Right Wrong
Installation Step 9
Electrical Requirements
Ground Tab
Green Ground
Screw
Ground Wire
Black
Wire
Permanent Wiring
Connection
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.
20
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 anyway to make it fit
your outlet.
Right Wrong
If permanent wiring is required by your local code, refer to the following procedure:
WARNING
WARNING