Page 1
MODEL CSO – 1/2HP
COMMERCIAL STRENGTH OPERATOR
For Residential and Light Duty Commercial Use
Install on Sectional Doors Only
OWNER'S MANUAL
H
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UP
FORCE
DOWN
FORCE
®
■ 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 end panel of your opener as
shown.
The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illlinois 60126-1196
Complies with UL 325
Regulations effective
January 1, 1993.
®
Page 2
Start by reviewing these important safety alert symbols
2
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
Contents Page
A review of safety alert symbols..................................2
You'll need tools...........................................................3
Safety information........................................................3
Testing your garage door for sticking,
binding and balance...................................................3
Illustration of sectional door installation ......................4
Carton inventory...........................................................5
Hardware inventory......................................................6
Assembly section – pages 7 - 10
Assemble rail .............................................................7
Attach chain pulley bracket........................................7
Install trolley...............................................................8
Fasten rail to power head..........................................8
Install chain................................................................9
Attach rail support bracket.........................................9
Tighten the chain.....................................................10
Installation section – pages 10 - 23
Installation safety instructions..................................10
Determine header bracket location.........................11
Install the header bracket........................................12
Attach the rail to header bracket .............................13
Position the opener..................................................14
Hang the opener......................................................15
Install the door control .............................................16
Install the light...........................................................17
Contents Page
Attach manual release rope and handle..................17
Electrical requirements.............................................18
The Protector System®............................................19
Install the safety reversing sensor.....................20, 21
Fasten door bracket and plate.................................22
Connect door arm to trolley......................................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 and 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
WARNING
WARNING
CAUTIONCAUTION
Page 3
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.
This product is for use on sectional garage
doors only.
Serious personal injury could
result from the use of this product on
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, any special
conditions that exist, and any additional materials that
may be required by referring to the list on 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
You'll Need Tools
During assembly , installation and adjustment of the opener, instructions will call for hand tools shown below.
Carpenter's
Level
Drill
Stepladder
1/2" and 7/16" Sockets
and Wrench
WARNING
Pencil
2
1
Tape Measure
3/16", 5/16" and
5/32" Drill Bits
Wire Cutters
Pliers
Screwdriver
Hack Saw
Claw Hammer
Adjustable End Wrench
CAUTIONCAUTION
Page 4
4
Safety Reversing Sensor
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.).
See page 22 for details.
Support bracket &
fastening hardware
is required.
See page 15.
— — — — — — — —
Door Center
Header Wall
Safety
Reversing
Sensor
Floor must be level
across width of door
FINISHED CEILING
Extension Spring
Torsion Spring
Access Door
OR
Slack in chain tension
is normal when
garage door is closed.
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 11 - Look at the wall or ceiling above
the garage door. The header bracket
must
be
securely fastened to structural supports.
• Step 5, page 15 - 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 19 - Depending
upon garage construction, wood blocks may need
to be fastened to mounting locations before
sensors are installed.
• Step 10, page 20 - Alternate floor mounting of the
safety reversing sensor will require hardware not
provided.
• Step 11, page 22 - 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 26. Floor or door should be
repaired.
Chain Pulley
Bracket
Header
Bracket
Trolley
Straight
Door
Arm
Manual
Release
Rope & Handle
Door Bracket
Garage
Door
Curved
Door
Arm
Garage
Door
Spring
Header
Wall
Chain
Closed Position
Rail
• The opener can be installed within 2 feet to 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 11 and 22.
Do you have an access door in addition to the garage
door? If not, Model 7702CB Outside Quick Release is
required. See page 34.
Before you begin, survey your garage area. Do any of the following conditions apply to you?
You may find it helpful to refer back to this page as you proceed with the installation of your opener.
Page 5
5
Straight
Door Arm
Door Bracket
Safety Labels
and
Literature
"C" Wrap (2)
Safety Reversing Sensor
Mounting Bracket
With Slot (2)
Door Bracket Plate
Curved Door Arm
Safety Reversing Sensor
Mounting Bracket
With Square Holes (2)
Door Control Button
Rail Support
Bracket
Header Bracket with
Clevis Pin and Fastener
UP
CEILING MOUNT ONLY
2 -Conductor Bell Wire
White & White/Red
Single-Function
Remote Control Transmitter
(2) Safety Reversing Sensors
(1 Sending Eye and 1 Receiving Eye)
with
2-Conductor White & White/Black Bell Wire
attached
Trolley
Chain
Pulley Bracket
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
Remote Control
Transmitter Visor Clip
Chain
Rail - Center Section
(Interchangeable - 2)
Rail - Front Section
(To Door)
Rail - Back Section
(To Power Head)
Carton Inventory
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 assembly and
installation is listed below.
Page 6
Lock Washer
5/16" (4)
Nut 5/16"-18 (6)
Clevis Pin
5/16"x2-3/4" (1)
NOTICE
Handle
Insulated
Staples (10)
Assembly Hardware
Installation Hardware
Dry Wall Anchors (2)
Clevis Pin
5/16"x1" (2)
Hex Screw
5/16"-18x7/8" (4)
Rope
Nut
5/16"-18 (5)
Washered Screw
5/16"-18x1/2" (4)
(2 -mounted in opener)
Carriage Bolt
5/16"-18x2-1/2" (2)
Carriage Bolt
1/4"-20x1/2" (7)
Master Link (2)
Ring
Fastener (3)
Trolley Threaded Shaft (1)
Screw
6ABx1-1/2" (2)
Lock Washer 5/16" (6)
Lag Screw
5/16"-9x1-5/8" (4)
Lock Nut
1/4"-20 (4)
Carriage Bolt
1/4"-20x1/2" (4)
Safety Reversing Sensor
Installation Hardware
Hex Screw
1/4-20x1-1/2" (2)
Screw
#10-32x3/8" (4)
Lock Nut
#10x32 (4)
Wing Nut (2)
Insulated
Staples (20)
RAIL GREASE
NO. 83A4
Rail Grease
Hex Screw
5/16"-18x7/8" (3)
Lag Screw
1/4x1-1/2" (4)
Lock Nut
1/4"-20 (7)
Hex Screw
1/4"-20x5/8" (2)
Screw
#8-32x3/8" (1)
Lock Washer
1/4" (2)
6
Group all hardware found in all packages contained in the rail and opener cartons into
the three kits illustrated below.
Page 7
7
Assembly Step 1
Assemble the Rail &
Attach the Chain Pulley Bracket
T o avoid installation difficulties, do not run the garage door opener until instructed to do so.
Assembly Section: Pages 7 – 10
Right Wrong
When tightening
the screws, be
sure to keep
bracket parallel to
the rail. Otherwise,
the rail may bow
when the opener is
operated.
• Align the 4 rail sections on a flat surface exactly as
shown. Center sections are interchangeable. Front
and back sections are not. Be sure the arrow
labels are pointing toward the door.
• Insert the carriage bolts so the square bolt necks
seat in the square holes in the rail sections and
pass through the square holes in the opposing rail
sections. Assemble lock nuts, ensure alignment
and tighten.
If rail is not assembled
exactly as shown, trolley
will not travel smoothly
along length of rail or it
will hit against nuts.
• Position the chain pulley bracket on the front end
of the rail as shown. Fasten securely with the
hardware shown.
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
Hex Screws
5/16"-18x7/8"
Chain Pulley
Bracket
Lock Washer
5/16"
Bracket and Rail Must Be Aligned
Nut - 5/16"
TO GARAGE DOOR
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.
Right
Wrong
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
Chain pulley bracket
attaches to FRONT
END of Rail
Rail Assembly
(Door End)
Rail Assembly
(Center Section)
Rail Assembly
(Center Section)
Rail Assembly
(Power Head End)
1/4" Lock
Nuts
Carriage Bolt
1/4"-20x1/2"
RAIL BACK
(TO POWER HEAD)
RAIL FRONT
(TO DOOR)
Page 8
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
Temporary Stop
Screwdriver
Trolley
Trolley Stop
Hole
Hex Screw
5/16"-18x7/8"
Nut
5/16"-18
Lock Washer
5/16"
Trolley
Threaded
Shaft
Lock
Washer
5/16"
Outer Nut
5/16"
Inner Nut
5/16"
Trolley
Assembly Step 2
Install the Trolley on the Rail
• Place the power head on packing material to
protect the cover. For convenience, put a support
under the chain pulley bracket.
• Remove the (2) 5/16"-18x1/2" washered screws
mounted in the top of the power head.
• Align the holes in the back section of the rail with
the holes in the power head, as shown.
• 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 power
head.
5/16"-18x1/2"
Washered Screws
Trolley Stop
Hole
TO GARAGE DOOR
USE ONLY THIS
TYPE AND SIZE
SCREW
8
• Attach the threaded shaft to the trolley with the
lock washer and nuts as shown.
• As a temporary stop, insert a screwdriver into the
hole in the front end of the rail.
• Slide the trolley assembly along the rail to the
screwdriver stop.
If trolley hits against any nuts on the 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 rail as shown. Tighten securely with a
5/16” lock washer and nut. This screw limits trolley
travel in the UP direction.
Assembly Step 3
Fasten the Rail to the Power Head
To fasten rail, use only those screws mounted
in the top of the power head. Any other screws
will cause serious damage to the power head.
Hardware Shown Actual Size
Hex Screw
5/16"-18x7/8"
Nut
5/16"
Lock Washer
5/16"-18
CAUTIONCAUTION
Page 9
Assembly Step 4
Attach the Chain
& Rail Support Bracket
9
To attach the rail support bracket:
• Position the rail support bracket on the power head.
• Attach the bracket to the rail with 1/4"20x5/8" hex
screws and lock washers.
• Attach the bracket to the power head by inserting a
5/16"-18x1/2" washered screw through a hole in
each side flange and a matching hole in the
bracket. Complete the connection by inserting the
#8-32x3/8" screw through the back flange and the
hole in the rail support.
• Remove the chain end from the carton and fasten
it to the trolley with a master link from the
hardware bag. See master link procedure,
Figure 1.
• With the trolley against the screwdriver, dispense
the chain around the pulley.
• Proceed back around the rail to the power head,
Figure 2. Guide the chain around the chain
spreader and sprocket. Be sure sprocket teeth
engage the chain.
• Continue forward to the trolley threaded shaft,
Figure 3.
• Use the second master link to connect the chain
to the flat end of the shaft. If necessary, loosen the
outer nut on the trolley to obtain more chain slack.
Check to make sure the chain is not twisted.
• Remove the screwdriver.
Figure 2
Figure 1
Serious injury can result if fingers become
entangled in moving opener sprocket. Attach
sprocket cover securely. Never operate opener
while your hand is near the opener sprocket.
Hardware Shown Actual Size
Chain
Pulley
Bracket
Chain
Master
Link Bar
Trolley
Chain
Rail
Pin Notch
Pin
Master Link
Clip-On Spring
Master
Link Cap
Master Link
Clip-On Spring
Master
Link Cap
Install Chain
In This Direction
Flat End
of Trolley
Threaded
Shaft
Figure 3
Master Link Procedure:
Push pins of master link bar through
chain end and hole in front end of
trolley. Push cap over pins and past
notches. Slide clip-on spring over
cap and into notches until both pins
are securely locked.
WARNING
Chain
Spreader
Sprocket
Power Head
1/4"-20x5/8" Hex Screws
5/16"-18x1/2"
Washered Screw
Rail Support
Bracket
with Lock Washers
#8-32x3/8"
Screw
5/16"-18x1/2"
Washered Screw
Power Head
Back Flange
Power Head
Side Flange
Hex Screw
1/4"-20x5/8" (2)
Washered Screw
5/16"-18x1/2" (2)
Lock Washer
Screw
#8-32x3/8" (1)
(2)
Page 10
• Spin the inner nut and lock washer down the
threaded shaft, away from the trolley.
• To tighten the chain, turn outer nut in the direction
shown. As you turn the nut, keep the chain
from twisting.
• When the chain is approximately 1/2" above the
base of the rail at its midpoint, re-tighten the inner
nut to secure the adjustment.
Sprocket noise can result if chain is either too
loose or too tight.
When installation is complete, you may notice some
chain droop with the door closed. This is normal. If
the chain returns to the position shown when the
door is open,
do not re-adjust the chain.
NOTE: During future maintenance,
ALWAYS
pull
the manual release handle to disconnect trolley
before adjusting chain.
Lock
Washer
To Tighten Outer Nut
Inner Nut
Trolley
Chain
Base of rail
1/2"
To Tighten
Inner Nut
Outer Nut
Assembly Step 5
Tighten the Chain
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 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 qualified 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.
10
You have now finished assembling your garage door opener. Please read the following
warnings before proceeding to the installation section:
WARNING
WARNING
Page 11
• 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"
11
Proceed to Step 2, page 12.
Vertical
Guideline
Finished
Ceiling
Vertical
Guideline
Header
Wall
2x4 Structural
Supports
• 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 2 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 12)
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.
Installation Section: Pages 11 – 23
Installation Step 1
Determine Header Bracket Location
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 garage door
service.
WARNING
Page 12
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
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
Hardware Shown Actual Size
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
UP
CEILING MOUNT ONLY
Ceiling Mounting Holes
The nail hole is for positioning only.
You must use lag screws to mount
the header bracket.
• 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 the bracket securely to
a structural support with the hardware provided.
Lag Screw
5/16"-9x1-5/8"
Page 13
Header
Bracket
Chain
Pulley
Bracket
Temporary
Support
Header Wall
Garage
Door
Rail
INCREASE
DOWN
TRAVEL
UP
Clevis Pin
5/16"x2-3/4 "
Ring Fastener
Header Bracket
Chain
Pulley
Bracket
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 rail to clear the
spring.
• Position the chain pulley bracket against the header
bracket.
• Align the bracket holes and join with a clevis pin as
shown.
• Insert a ring fastener to secure.
13
Installation Step 3
Attach the Rail to the Header Bracket
Hardware Shown Actual Size
Clevis Pin
5/16" x 2-3/4"
Ring Fastener
Page 14
Installation Step 4
Position the Opener
To prevent damage to steel, aluminum,
fiberglass or glass panel doors, do not rest the
opener on the door without using a 2x4.
14
• 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.
A 2x4 laid flat is convenient for setting an ideal
door-to-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 rail.
Rail
2x4
Door
Stepladder
CAUTIONCAUTION
Trolley
Release Arm
Trolley
Page 15
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 in ceiling 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"x1-5/8" 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 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.
Grease the top and underside of the rail
surface where the trolley slides. A tube of
grease is supplied.
15
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
RAIL GREASE
NO. 83A4
Lag Screws
5/16"x1-5/8"
Bracket
(Not Supplied)
FINISHED CEILING
Hidden
Support
(Not Supplied)
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
WARNING
Structural
Supports
Lag Screws
5/16"x1-5/8"
Measure
Distance
5/16"-18x7/8" Screw
5/16" Lock Washer
5/16"-18 Nut
Hex Screw
5/16"-18x7/8"
Lag Screw
5/16"-9x1-5/8"
5/16"-18
Nut
Lock Washer 5/16"
Page 16
Installation Step 6
Install the Door Control
16
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.
Install the Door Control (or any additional push
buttons) out of the reach of children and away
from all moving parts of the door and door
hardware,
but where the garage door is visible.
Do not allow children to operate the push
buttons or the remote control transmitters.
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.
• Strip 1/4" of insulation from one end of the bell
wire; connect the wire to the two screw terminals
on the back of the Door Control: white to 2, and
white/red to 1.
• 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.
Fasten the Door Control securely with 6ABx1-1/2"
screws. If installing into drywall, drill 5/32" holes
and use the anchors provided.
• Run the bell wire up the wall and across the ceiling
to the opener. Use insulated staples to secure the
wire in several places. Be careful not to pierce the
wire with a staple, thereby resulting in a short.
• Receiver terminal screws and the antenna are
located on the back panel of the opener. Position
the antenna wire as shown.
• Then connect the bell wire to the opener terminal
screws: white to 2 and white/red to 1.
• Remember to affix 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.
If the label adhesive will not adhere to your garage
wall surface (or becomes loose with time), use tacks
to secure the label alongside the Door Control.
Page 29 explains how to operate the opener using
the door control.
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
Opener
Terminal
Screws
Door Control
Button
2-Conductor
Bell Wire
Antenna
Back Panel
of Opener
KG
KG
1
3
9
7
5
1
3
9
7
5
2 3
1
Door Control
Terminal Screws
2-Conductor
Bell Wire
WHT
RED
-2
-1
Dry Wall Anchors
Insulated
Staples
6ABx1-1/2" Screw
Door Control Button
Hardware Shown Actual Size
WARNING
Page 17
75 Watt Max.
Light Bulb
Install the Light
• 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 bulb burns out prematurely due to vibration,
replace with a
standard neck
"Garage Door
Opener" bulb.
Installation Step 7
Install the Light
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.
The knot should be 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
17
WARNING
Page 18
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.
Installation Step 9
Electrical Requirements
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.
18
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.
Right
Wrong
To avoid installation difficulties,
do not run the opener at this time.
To avoid installation difficulties,
do not run the opener at this time.
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
Green
Ground
Screw
Ground Wire
Permanent wiring
connection
Ground Tab
Black
Wire
White Wire
Black
Wire
Page 19
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.
Without a properly working safety reversing
sensor, persons (particularly children) could
be 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.
Figure 1: Facing the door from inside the garage
The invisible light beam path must be unobstructed.
No part of the garage door (or door tracks, springs,
hinges, rollers or other hardware) can interrupt the
beam while the door is closing. If it does, use a piece
of wood to build out each sensor mounting location to
the minimum depth required for light beam clearance.
19
Information you'll need before you begin the installation of the safety reversing sensor.
Be sure power to the opener is disconnected.
The sending eye transmits an invisible light beam to
the receiving eye. The units can be installed on
either side of the garage door as long as the sun
never shines directly into the receiving eye lens.
Look at the label on the connector end of each case
to identify the sensors.
The brackets must be connected and fastened so
that the sending and receiving eyes face each other
as shown below in Figure 1.
If an obstruction breaks the light beam while the
garage door is closing, the door will stop and
reverse to full open position and the opener lights
will flash for 5 seconds.
The brackets
must
be securely fastened to a solid
surface such as the studs on either side of the door,
or add a piece of wood at each location if installing
in masonry construction.
The Protector System
®
WARNING
Sensor Beam
4-6" max.
above floor
Sensor Beam
4-6" max.
above floor
Invisible Light Beam
Protection Area
Page 20
Lag Screw
1/4x1-1/2"
Screw
#10-32x3/8"
Lock Nut
1/4"-20
Lock Nut
#10x32
Insulated Staples
Carriage Bolt
1/4"-20x1/2"
Installation Step 10
Install the Safety Reversing Sensor
(Receiving and Sending Eyes)
s
Figures 2 , 3 and 4 show recommended assembly
of bracket(s) and "C" wrap based on the
wall
installation of the sensors on each side of the
garage door as shown on page 19, or on the
garage door tracks
themselves.
For Garage Wall or Door Track
Installation
• Fasten the "C" wraps to the mounting brackets
having square holes, using the hardware shown
in Figure 2.
For Door Track
Installation Only
• Discard slotted bracket. Drill 3/8" holes in each
track and fasten securely with hardware as shown
in Figure 3.
For Wall
Installation
• Connect each assembly to a slotted bracket, using
the hardware shown in Figure 4. Note alignment
of brackets for left and right sides of the door.
• Finger tighten the lock nuts.
• Use bracket mounting holes as a template to locate
and drill (2) 3/16" diameter pilot holes on both sides
of the garage door, 4"-6" above the floor
but not
exceeding 6"
. (See warning on page 19.)
• Attach bracket assemblies with 1/4"x1-1/2"
lag screws as shown in Figure 4.
• Adjust right and left side bracket assemblies to the
same distance out from mounting surface. Make
sure all door hardware obstructions are cleared.
Tighten the nuts securely.
"C" Wrap
Inside
Garage
Wall
Mounting Bracket
with Square Holes
Garage
Floor
Mounting Bracket
with Slot
Alternate Wall Mount
Sensor
with wire
Indicator Light
Indicator Light
Inside
Garage
Wall
Alternate Floor Mount
Mounting Bracket
with Slot
Attach with
concrete anchors
(not provided)
Mounting Bracket
with Square Holes
"C" Wrap
Sensor with wire
Garage
Floor
20
Hardware Shown Actual Size
Figure 2
Figure 3
Figure 4
Figure 6
Figure 5
Figures 5 and 6 are variations which may fit your installation requirements better. Make sure the wraps and
brackets are aligned so the sensors will face each other across the garage door.
Garage WALL or DOOR TRACK Installation
Mounting Bracket
With Square Holes
"C" Wrap
1/4"-20x1/2"
Carriage Bolts
#10-32
Lock Nuts
Garage
Door Track
Drill 3/8"
Holes
Inside
Garage
Garage DOOR Track Installation
Inside
Garage
Wall
1/4"-20 Lock Nuts
Garage WALL Installation
1/4x1-1/2"
Lag Screws
Wall
Mounting Bracket
with Slot
1/4"-20
Lock Nuts
1/4-20x1/2" Carriage Bolt
(with square shoulder)
Mounting Bracket
with Square Holes
#10-32x3/8"
Screws
Mounting Bracket
with Square Holes
"C" Wrap
"C" Wrap
Page 21
Invisible Light Beam
Protection Area
Sensor
Sensor
Connect Wire to
Opener Terminals
Bell Wire
Bell Wire
Finished
Ceiling
Sensor
Connections
Door Control
Connections
(dotted line)
OPENER TERMINAL SCREWS
1
2 3
• Center each sensor unit in a "C" wrap with lenses
pointing toward each other across the door (see
Figure 7).
• Secure sensors with the hardware shown. Finger
tighten the wing nut on the
receiving eye
to allow
for final adjustment. Securely tighten the
sending
eye
wing nut.
• 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.
• Plug in the opener. Green indicator lights in both
the sending and receiving eyes will
glow steadily
if
wiring connections and alignment are correct.
If the indicator light is
off
in the
receiving eye
(and
the invisible light beam path is not obstructed),
alignment is required.
• Loosen the receiving eye wing nut to allow slight
rotation of unit. Adjust sensor vertically and
horizontally until the green indicator light
glows
with a steady light
.
• When indicator lights are
glowing steadily
in both
units, tighten the wing nut in the receiving eye unit.
21
1/4-20 x 1-1/2"
Hex Bolt
"C" Wrap
Sensor
with Wire
Wing
Nut
Indicator
Light
Hex Bolt
1/4-20x1-1/2"
Wing Nut
Hardware Shown Actual Size
Figure 7
Trouble Shooting
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 under staples or at screw terminal
connections.
• Incorrect wiring between sensors and opener.
• An open wire (wire break).
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.
Page 22
Vertical
Guideline
Door
Bracket
Nut
5/16"-18
Carriage Bolt
5/16"-18x2-1/2"
Lock Washer
5/16"
Vertical
Guideline
Door
Bracket
Location
Header
Bracket
Door
Bracket
Door Bracket
Plate
Inside Edge
of Door or
Reinforcement Board
Horizontal and vertical reinforcement
is needed for lightweight garage doors
(fiberglass, aluminum, steel,
doors with glass panel, etc).
Vertical
Reinforcement
Installation Step 11
Fasten Door Bracket & Plate
To prevent damage to steel, aluminum,
fiberglass or glass panel doors, always
reinforce the inside of the door both vertically
and horizontally with an 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.
• 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 reinforcement but does need top and bottom fastening holes
for the door bracket, position the door plate over the
door bracket as shown in Figure 2. Fasten securely
with hardware shown in Figure 1.
22
Nut
5/16"-18
Lock Washer
5/16"
Carriage Bolt
5/16"-18x2-1/2"
Hardware Shown Actual Size
Figure 1
Figure 2
CAUTIONCAUTION
Page 23
Installation Step 12
Connect Door Arm to Trolley
Make sure garage door is fully closed. Pull the manual release handle to disconnect the outer trolley
from the inner trolley. Slide the outer trolley back (away from the door) about 2” as shown in Figures 1,
2 and 3.
Figure 2:
• Bring arm sections together. Find two pairs of holes
that line up and join sections. Select holes as far
apart as possible to increase door arm rigidity.
Ring
Fastener
Door
Bracket
Clevis Pin
Curved
Door Arm
Straight
Door Arm
Clevis
Pin
Inner Trolley
Outer Trolley
Lock
Washers
5/16"
Nuts
5/16"-18
Door Bracket
Screws
5/16"-18x7/8"
Manual
Release
Handle
Rope
Figure 3:
• If holes in curved arm are
above
holes in straight
arm, disconnect straight arm. Cut about 6" from
the solid end. Reconnect to trolley with
cut end
down
as shown.
• Bring arm sections together.
• Find two pairs of holes that line up and join with
screws, lock washers and nuts.
Lock
Washers
5/16"
Nuts
5/16"-18
Screws
5/16"-18x7/8"
Cut This End
Proceed to Adjustment Step 1, page 24. Trolley will re-engage automatically when the opener is operated.
23
Figure 1:
• Fasten straight door arm section to outer trolley
with a clevis pin. Secure the connection with a ring
fastener.
• Fasten curved section to the door bracket in the
same way as shown.
Lockwasher 5/16"
Nut 5/16"-18
Ring Fastener
Hex Screw
5/16"-18x7/8"
Clevis Pin
5/16" x1"
Hardware Shown Actual Size
Figure 1
Figure 2
Figure 3
Hole Alignment Alternative
Page 24
Adjustment Step 1
Adjust the UP and DOWN Limits
Do not make any limit adjustments until the
Safety Reversing Sensors are completely
installed.
24
Limit adjustment settings regulate the points at
which the door will
stop
when moving up or down.
The door will
stop
in the
up
direction if anything
interferes with door travel. The door will
reverse
in
the
down
direction if anything interferes with the
door travel (including binding or unbalanced doors).
To operate the opener, press the Door Control
button. Run the opener through a complete travel
cycle.
• Does the door open and close completely?
• Does the door stay closed and not reverse
unintentionally when fully closed?
If your door passes both of these tests, no limit
adjustments are necessary unless the reversing test
fails (see page 26).
Adjustment procedures are outlined below. Run
the opener through a complete travel cycle after
each adjustment.
Repeated operation of the opener during
adjustment procedures may cause the motor to
overheat and shut off. Simply wait 15 minutes
and try again.
Read the procedures carefully before proceeding to
Adjustment Step 2. Use a screwdriver to make limit
adjustments.
Limit
Adjustment
Screws
Left Side
Panel
INCREASE
DOWN
TRAVEL
UP
INCREASE
DOWN
TRAVEL
UP
How and When to Adjust the Limits
If the door does not
open completely
but opens
at least
five feet:
Increase
up
travel. Turn the UP limit adjustment
screw clockwise. One turn equals 2" of travel.
If door does not open at least 5 feet:
Adjust the UP (open) force as explained in
Adjustment Step 2.
If the door does not
close completely:
Increase
down
travel. Turn the DOWN limit
adjustment screw counterclockwise. One turn
equals 2" of travel.
If door still won't close completely, try lengthening
the door arm. (See page 23.)
If you have adjusted the door arm to the maximum
length and the door still will not close completely,
lower the header bracket. See Installation Steps 1
and 2, pages 11 and 12.
If the opener
reverses
in fully closed position:
Decrease
down
travel. Turn the DOWN limit
adjustment screw clockwise. One turn equals 2"
of travel.
If the door
reverses
when closing and
there is no visible interference to travel cycle:
If the opener lights are flashing, the Safety Reversing
Sensor is obstructed. Remove the obstruction.
Test the door for binding: Pull the manual release
handle. Manually open and close the door. If the door
is binding, call for garage door service. If the door is
not binding or unbalanced, adjust the DOWN (close)
force. See Adjustment Step 2.
Adjustment Section: Pages 24 – 26
Improper adjustment of the travel limits could
interfere with the proper operation of the
safety reverse system. See page 26.
The door
might not reverse when required and could
seriously injure or kill someone under it.
WARNING
Page 25
Adjustment Step 2
Adjust the Force
Too much force on the door will interfere with
the proper operation of the safety reverse
system.
The door might not reverse properly
when required and could seriously injure or
kill someone under it.
Do not increase the
force beyond the minimum required to close
the door. Do not use the force adjustments to
compensate for a binding or sticking garage
door. Test the safety reverse system following
all adjustments to force levels. See page 26.
KG
KG
1
3
9
7
5
1
3
9
7
5
Force Adjustment
Controls
Back Panel of Opener
KG
KG
1
3
9
7
5
1
3
9
7
5
1
2
3
Adjustment Label
How and When to Adjust the Forces
Test the DOWN (close) force:
Grasp the door bottom when the door is about
halfway through DOWN (close) travel. The door
should reverse. (Reversal halfway through down
travel does not guarantee reversal on a one inch
obstruction. See page 26.) If the door is hard to
hold or doesn't reverse, decrease the DOWN (close)
force by turning the control counterclockwise.
Make 10 degree turn adjustments until the door
reverses normally. After each adjustment, run the
opener through a complete cycle.
Test the UP (open) force:
Grasp the door bottom when the door is about
halfway through UP (open) travel. The door should
stop. If the door is hard to hold or doesn't stop,
decrease UP (open) force by turning the control
counterclockwise.
Make 10 degree turn adjustments until the door
stops easily. After each adjustment, run the opener
through a complete travel cycle.
If the door doesn't open
at least
5 feet:
Increase UP (Open) force by turning the control
clockwise. Make 10 degree turn adjustments until
door opens completely. Re-adjust the UP limit if
necessary. After each adjustment, run the opener
through a complete travel cycle.
If the door
reverses
during the down (close) cycle
and the opener lights aren't flashing:
Increase DOWN (close) force by turning the control
clockwise. Make 10 degree turn adjustments until the
door completes a close cycle. After each adjustment,
run the opener through a complete travel cycle.
Do not increase the force beyond the minimum
amount required to close the door.
25
Force adjustment controls are located on the back
panel of the opener. Force adjustment settings
regulate the amount of power required to open and
close the door.
The door will
stop
in the updirection if anything
interferes with its travel. The door will
reverse
in the
down
direction if anything interferes with its travel
(including binding or unbalanced doors).
If the forces are set too light, door travel may be
interrupted by
nuisance reversals
in the
down
direction and
stops
in the
up
direction. Weather
conditions can affect the door movement, so
occasional adjustment may be needed.
The maximum force adjustment range is 260
degrees, about 3/4 of a complete turn. Do not force
controls beyond that point. Turn force adjustment
controls with a screwdriver.
WARNING
Page 26
Adjustment Step 4
Test the Safety Reverse System
Test:
• Place a one-inch board (or a 2x4 laid flat) on the
floor, centered under the garage door.
• Operate the door in the down direction. The door
must
reverse on striking the obstruction.
Adjustment:
If the door
stops
on the obstruction, it is not traveling
far enough in the down direction.
• Increase the DOWN limit by turning the DOWN
limit adjustment screw counterclockwise 1/4 turn.
• Repeat the test.
Make sure limit adjustments do not force the
door arm beyond a straight up and down
position. See the illustration on page 23.
• When the door reverses on the one-inch object
(or 2x4 laid flat), remove the obstruction and run
the opener through 3 or 4 complete travel cycles to
test adjustment.
If the door will not reverse after repeated
adjustment attempts, call for professional
garage door service.
GARAGE DOOR
One-inch Board
(2x4 laid flat)
Failure to test and adjust the safety reverse
system may result in serious injury or death to
persons trapped by a closing garage door.
Repeat this test once a month and adjust as
needed.
26
Adjustment Step 3
Test The Safety Reversing Sensor
• Press the Door Control button to open the door.
• Place the opener carton in the path of the door.
• Press the Door Control button to close the door.
The door will not move more than an inch, and the
opener light will flash.
Professional service is required if the opener
closes the door when the safety reversing
sensor is obstructed.
The garage door opener will not close from a
remote if the indicator light in either sensor is
off,
alerting you to the fact that the sensor is
misaligned or obstructed.
The garage door can be closed by pressing and
holding the Door Control button until down travel is
completed.
Safety Reversing Sensor
Safety Reversing Sensor
Without a properly working safety reversing
sensor, persons (particularly children) could
be seriously injured or killed if trapped by a
closing garage door.
Repeat this test once a
month.
Important safety check
Repeat Adjustment Steps 1, 2 and 4 after:
• Each adjustment of door arm length, force controls
or limit controls.
• Any repair to or adjustment of the garage door
(including springs and hardware).
• Any repair to or buckling of the garage floor.
WARNING
WARNING
Page 27
IMPORTANT SAFETY INSTRUCTIONS
To reduce the risk of severe injury or death to persons:
1. READ AND FOLLOW ALL INSTRUCTIONS.
2. Do not permit children either to operate or to play with the opener. Keep a remote control in a
location inaccessible to children.
3. Operate opener only when the door is in full view and free from any obstruction. Keep the door in
sight until it is completely closed. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.
4. Check safety reversal system monthly. See page 26. The garage door
MUST
reverse on contact
with a one-inch object (or a 2x4 board laid flat) placed on the floor. If an adjustment is made to
either the force or the limit of travel, both adjustments may be needed and the safety reversal
system must be checked.
Failure to properly adjust the opener may result in severe injury or death.
5. If possible, use the manual release only when the door is in a closed position. Caution should be
taken whenever the disconnect cord is actuated with the door open.
Weak or broken springs may
cause the door to fall rapidly, causing injury or death to persons.
6. KEEP GARAGE DOORS PROPERL Y BALANCED. See page 3.
An improperly balanced door may not
reverse when required and could result in severe injury or death.
Repairs to cables, spring
assemblies and other hardware must be made by a professional garage door person.
7. Disconnect the electric power from the garage door opener before making any repairs or removing
the covers.
8. SAVE THESE INSTRUCTIONS.
Do not exceed 8 complete cycles of door operation per hour in commercial applications.
Care of Your Opener
Once a Month
Manually operate door. If it is unbalanced or
binding, call for professional garage door service.
Check to be sure door opens and closes fully.
Adjust limits and/or force if necessary. (See pages
24 and 25.)
Repeat the safety reverse test. Make any
necessary adjustments. (See page 26.)
Twice a Year
Check chain tension. Disconnect trolley first.
Adjust if necessary (See page 10).
Once a Year
Oil door rollers, bearings and hinges. The opener
does not require additional lubrication. Do not
grease the door tracks.
Weather conditions may cause some minor
changes in door operation requiring some readjustments, particularly during the first year of
operation.
Pages 24 and 25 refer to the limit and force
adjustments. Only a screwdriver is required. Follow
the instructions carefully.
Repeat the safety reverse test (page 26) after any
adjustment of limits or force.
27
Force Controls
Adjustment Label
(Located on the back panel)
KG
KG
1
3
9
7
5
1
3
9
7
5
Limit Controls
Adjustment Label
(Located on the left side panel)
INCREASE
DOWN
TRAVEL
UP
Maintenance Schedule
Limit and Force Adjustment Controls The remote control transmitter:
The opener must learn the code of any new remote
control. Page 29 explains how to program your
garage door opener and how to erase all codes if
required. Self service of your receiver and remote
controls is not recommended. If service is needed,
call the toll-free number listed on the back page.
The transmitter battery:
The green test light will glow and the opener will
operate when the remote control is activated, as long
as there is adequate battery power.
If the test light is
dim or off
, replace the battery. Also
check the test light if transmission range decreases.
The 12V battery should produce power for at least a
year.
Dispose of your old battery properly.
WARNING
WARNING
Page 28
To open the door
manually:
The door should be fully
closed if possible. Pull
down on the red manual
release handle and lift
the door manually. To
reconnect the door to the
opener, press the Door
Control button.
28
Activate the opener with any of the following
devices:
• The Remote Control Transmitter. Hold push
button down until the door starts to move.
• The Door Control. Hold button down until the
door starts to move.
• The Outside Keylock or Keyless Entry.
(See Accessories.)
When the opener is activated with the Safety
Reversing Sensor installed and correctly aligned:
1. If open, the door will close. If closed, the door will
open.
2. If closing, the door will reverse.
3. If opening, the door will stop (allowing space for
entry and exit of pets and for fresh air).
4. If the door has been stopped in a partially open
position, it will close.
5. If obstructed while closing, the door will reverse.
6. If obstructed while opening, the door will stop.
7. The garage door will reverse in the closing cycle
when the invisible beam is broken. If fully open, the
door will not close when the beam is broken. The
sensor has no effect in the opening cycle.
If the sensor is not installed, or is not aligned
correctly, the door won't close from any remote
control transmitter. You can close the door with the
Door Control, the Outside Keylock, or Keyless Entry,
however, if you activate them until down travel is
complete. If you release them too soon, the door will
reverse.
The opener light will
blink for 5 seconds
when the
safety reversing sensor causes the door to reverse.
The Opener Light will turn on under the following
conditions: When the opener is initially plugged in;
when the power is interrupted; when the opener is
activated. It will turn off automatically after 4-1/2
minute. Bulb size is 75 watts maximum.
The lockout feature
prevents the trolley from
reconnecting automatically. Pull the red
manual release handle
down and back (toward
the opener). The door
can then be raised and
lowered manually as
often as necessary. To
disengage the Lockout
Feature, pull the manual
release handle straight
down. The trolley will
reconnect on the next UP
or DOWN operation.
Trolley
Trolley
Release Arm
NOTICE
Manual Release
Handle (Pull Down)
Trolley
Trolley
Release Arm
NOTICE
Manual Release Handle
(Pull Down & Back
Towards Opener)
Lockout position
Manual disconnect
position
Weak or broken springs could allow an open
door to fall (either rapidly or unexpectedly),
resulting in serious injury, death or property
damage.
If possible, use the manual release
rope and handle
only
when the door is fully
closed.
Operation of Your Opener
Operation of the
Door Control Button
Press to open or close the door.
Press again to
reverse
the door during the closing
cycle or to
stop
the door while it's opening.
WARNING
Page 29
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 door control or remote control
transmitter(s).
A moving garage door could injure or kill
someone under it.
Activate the opener only
when you can see the door clearly, it is free of
obstructions, and is properly adjusted.
29
Your garage door opener receiver and remote control
transmitter have been set at the factory to a matching
code. The door will open when you press the remote
control push button.
Your "Smart" garage door opener will operate with:
• up to four "Smart" remote control transmitters
(with green indicator lights),
• a Keyless Entry System, and
• code switch remote controls with red indicator
lights.
Below are instructions below for programming your
opener to match any additional remotes you may
purchase. See available accessories on page 34.
To Add A Remote
1. Press and
hold
the remote push button. See
Figure 1.
2. Then press and release the green "Smart" button
on the back panel of the opener in Figure 2. The
indicator light on the panel will
flash once.
3. Release the remote push button.
Now the opener will operate when the remote control
push button is pressed.
If you release the remote control push button
before the indicator light flashes, the opener will
not accept the code.
To Erase All Remote Control Codes
• Press and hold the green "Smart" button on the
opener panel until the indicator light turns off (about
6 seconds).
All
the codes the opener has learned
will be erased.
• To reprogram, repeat Steps 1 – 3 for each remote
control in use.
Code programming instructions are also located
on the opener panel.
Single-Function Remote Control
Push Button
Green Battery
Indicator Light
Garage Door Opener
(With "Smart" Button)
END PANEL
"Smart"
Button
Indicator
Light
KG
KG
1
3
9
7
5
1
3
9
7
5
1
2
3
Figure 1
Figure 2
Receiver and Remote Control Programming
NOTICE: To comply with FCC rules, adjustment or modification of this
receiver and/or transmitter are prohibited, except for changing the code
setting or replacing the transmitter battery. THERE ARE NO OTHER
USER SERVICEABLE PARTS.
WARNING
Page 30
1. Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light,
check the fuse box or the circuit breaker. (Some outlets are controlled by a wall switch.)
2. Have you disabled all door locks? Review installation instruction warnings on
Page 10.
3. Is there a build-up of ice or snow under the door? The door may be frozen to the
ground. Remove any restriction.
4. The garage door spring may be broken. Have it replaced.
5. Repeated operation may have tripped the overload protector in the motor. Wait
15 minutes. Try again.
Having a Problem?
Situation Probable Cause & Solution
The opener doesn't
operate from either
the door control or
the remote control:
Opener operates
from the remote
control but not from
the door control:
1. Is the door control button lit? If not, Remove the bell wire from the opener terminal
screws. Short the red and white terminals by touching both terminals at the same
time with a piece of wire. If the opener runs, check for a faulty wire connection at the
door control, a short under the staples, or a broken wire.
2. Are the wiring connections correct? Review Step 6, page 16.
The door operates
from the door control,
but not from the
remote control:
1. Does the battery test light glow when the remote control push button is pressed? If
not, replace the battery.
2. Program the receiver to match the remote control code.
3. Repeat the receiver programming procedure with all remote controls.
The remote control
has short range:
The garage door
opens and closes
by itself:
1. Be sure that all remote control push buttons and battery indicator lights are off.
2. Remove the bell wire from the door control terminals and operate from the remote
control only. If this solves the problem, the door control is faulty (replace), or there is an
intermittent short on the wire between the door control and the opener.
The door doesn't
open completely:
1. If the door has been working properly but now doesn't open all the way, increase the
up force.
See page 25.
2. Is something obstructing the door? Remove the obstruction or repair the door.
3. If door opens at least 5 feet, the travel limits may need to be increased. One turn
equals 2 inches of travel. See page 24.
Repeat the safety reverse test after the adjustment is complete.
The door stops but
doesn't close
completely:
Review the travel limits adjustment procedures on page 24.
Repeat the safety reverse test after any adjustment of door arm length, close force
or down limit.
30
1. Check the battery test light. If the light is dim, change the battery.
2. Change the location of the remote control in your car.
3. Check to be sure the antenna on the back panel of opener extends fully downward.
4. Some installations may have shorter range due to a metal door, foil backed
insulation, or metal garage siding.
Install Antenna Kit, Part No. 41A3504, to increase range.
Opener noise is
disturbing in living
quarters of home:
If operational noise is a problem because of proximity of the opener to the living
quarters, the Vibration Isolator Kit 41A3263 can be installed. This kit was designed to
minimize vibration to the house and is easy to install.
Page 31
Having a Problem?
(continued)
Situation Probable Cause & Solution
The opener strains or
maximum force is
needed to operate
door:
The door may be out of balance or the springs are broken. Close the door and use the
manual release handle to disconnect the trolley. Open and close the door manually.
A properly balanced door will stay in any point of travel while being supported entirely by its
springs. If it does not, disconnect the opener and call for professional garage door service.
Do not increase the force to operate the opener.
The opener motor
hums briefly, then
won't work:
1. The garage door springs are broken. See above.
2. If the problem occurs on the first operation of the opener, door may be locked.
Disable
the door lock
. If the chain was removed and re-installed, the motor may be out of phase.
Remove the chain; cycle the motor to the down position. Observe the drive sprocket.
When it turns in a clockwise direction and stops in the down position, reinstall the chain.
Repeat the safety reverse test after the adjustment is complete.
The opener won't
operate due to
power failure:
1. Use the manual release rope and handle to disconnect the trolley. The door can be
opened and closed manually. When power is restored, press the door control button
and trolley will automatically reconnect (unless trolley is in lockout position.) See
page 28.
2. The Outside Quick Release accessory (for use on garages with no service door)
disconnects the trolley from outside the garage in case of power failure.
The chain droops
or sags:
It is normal for the chain to droop slightly in the closed door position. Use the manual
release rope and handle to disconnect the trolley. If the chain returns to the normal
height when the trolley is disengaged and the door reverses on a one-inch board
(or a 2x4 laid flat), no adjustments are needed. (See page 10.)
31
The door opens but
won't close:
The door reverses for
no apparent reason
and opener light
doesn't blink:
1. Is something obstructing the door? Pull the manual release handle. Operate the door
manually. If it is unbalanced or binding, call for professional garage door service.
2. Clear any ice or snow from the garage floor area where the door closes.
3. Review the force adjustment procedures on page 25.
Repeat the safety reverse test after the adjustment is complete.
4. If door reverses in the
fully closed
position, decrease the travel limits (page 24).
Repeat safety reverse test after the adjustment is complete. The need for
occasional adjustment of the force and limit settings is normal. Weather
conditions in particular can affect door travel.
The opener light
The door reverses for
no apparent reason
and opener light
blinks for 5 seconds
after reversing:
. . . doesn't turn on:
Replace the light bulb (75 watts maximum). Use a
standard neck
garage door opener
bulb if regular bulb burns out.
. . . doesn't turn off:
There may be a defective ground at the ceiling or wall receptacle. The unit must be
grounded.
Check the safety reversing sensor. Remove any obstruction or align the receiving eye.
See page 21.
1. If the opener lights blink, check the safety reversing sensor. See page 21.
2. If the opener lights do not blink and it is a new installation, check the down force.
See Adjustment Step 2, page 25. For an existing installation, see below.
Repeat the safety reverse test after the adjustment is complete.
Page 32
7
UP
CEILING MOUNT ONLY
12
1
NOTICE
5
8
13
9
11
10
14
6
12VDC
3
4
15
2
2
1
6
3
RAIL GREASE
NO. 83A4
7
4
5
8
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
TO GARAGE DOOR
Repair Parts
Rail Assembly Parts
Installation Parts
32
KEY PART
NO. NO. DESCRIPTION
1 1A995 Master link kit
2 41A2780 Chain pulley bracket
3 41A3489 Complete trolley assembly
4 1B4935 Rail assy. to door end
5 1B4934 Rail assy center sections (2)
6 1B4933 Rail assy. to power head
7 83A4 Rail grease
8 41A4554 Chain
9 41A4937 Rail assy hardware kit (Includes
hardware listed on page 5).
KEY PART
NO. NO. DESCRIPTION
1 41A4166 Door control button
2 41A3984-5 Single-function remote control transmitter
housing & screw (no circuit board)
3 10A14 12V battery
4 29C128 Remote control visor clip
5 41A2828-1 Manual rope & handle assembly
6 217A238 2-Conductor bell wire-white & white/red
7 41A4353 Header bracket w/clevis pin & fastener
8 12B374 Door bracket
9 12B380 Door bracket plate
10 12B484 Square hole mounting bracket
11 178B35 Curved door arm section
12 178B34 Straight door arm section
13 12B483 C Wrap bracket
14 12B485 Slotted mounting bracket
15 41A4373A Safety sensor kit (receiving and sending
eyes) with 3’ 2-conductor bell wire attached
NOT SHOWN
41A3535 Installation hardware bag (includes
hardware listed on page 5).
41A4116 Safety sensor hardware
114A2007 Owner's manual
Page 33
Repair Parts
Opener Assembly Parts
1
9
7
12
13
14
15
18
4
8
11
17
10
16
3
5
6
18
15
2
DN
UP
Brown
Wire
(Down)
Contact
LIMIT SWITCH ASSY.
Grey
Wire
Yellow
Wire
(Up)
Contact
Center Limit
Contact
Drive
Gear
KEY PART
NO. NO. DESCRIPTION
1 41D4478 Rail support bracket assembly kit
2 144B18 Pulley (Chain)
3 41C4470 Gear and sprocket assy.
Complete with:
Spring washer
Thrust washer
Retaining washer
Bearing plate
Roll pins (2)
Drive gear and worm gear
Helical gear w/retainer and grease
Sprocket shaft plate with screws
4 41A2817 Drive/worm gear kit w/grease
Roll pins (2)
5 143D100 Front end panel
6 175B88M Light socket
7 30B432 Capacitor
8 12A461 Capacitor bracket
9 41A3150 Terminal block with screws
KEY PART
NO. NO. DESCRIPTION
10 41D4509 Replacement motor & bracket
assembly
Complete with: Motor, worm,
bracket, bearing assembly
11 41A4936 Cover
12 41A2818 Helical gear & retainer w/grease
13 41D3452 Limit switch assembly
14 41C4398A RPM sensor assembly
15 41C4246 Wire harness assembly w/plug
16 41A2826 Shaft bearing kit
17 41A2822A Interruptor cup assembly
18 41A4252-7D Receiver logic board assembly
Complete with: Logic board, end
panel with all labels
NOT SHOWN
41A2825 Opener assembly hardware kit
(includes screws not designated by
a number in illustration).
33
Page 34
1 2
3 4 5 6
7 8
9 0
ENTER
LIGHT
LOCK
Accessories Available for your Opener
853CB
760CB
740CB
7702CB
Multi-Function Standard Size
Remote Control:
Includes visor clip.
Keyless Entry:
Enables homeowner to operate
garage door opener from outside
by entering code on specially
designed keypad.
Outside Keylock:
Opens the garage door
automatically from outside when
remote control is not handy.
Wire-In Light Control:
Controls interior or exterior
lights. Wires into the electrical
box like a dimmer switch.
874CB
Plug-In Light Control:
Controls interior lights. Plugs
into a wall receptacle.
Outside Quick Release:
Required
for a garage with NO
access door.
850CB Single-Function Standard Size
Remote Control:
Includes visor clip.
856CB Multi-Function Mini Remote
Control:
With key ring & Velcro fastening
strip.
872CB
959CB Security Remote Control
Enables homeowner to operate
garage door opener by entering
2, 3, 4, or 5 digit code from
backlit keyboard. Includes visor
clip.
34
945CB Multi-Function Door Control
Panel:
Provides a Lock Feature which
prevents operation of garage door
opener from portable remotes and
a Light Feature for constant light.
NEMA 1 Push Button:
Heavy Duty Door Control Push
Button (one button).
Antenna Extender Kit:
If the metal environment in which
the operator has been installed
causes short radio control range,
install Antenna Extender Kit,
Part No. 41A3504.
180C139
41A3504
Coaxial
Cable
Page 35
Index
Access Door/Outside Quick Release Accessory..........................................................................................4, 34
Chain Tension............................................................................................................................................4, 10, 31
Electrical Safety Warnings..................................................................................................................2, 10, 18, 27
Garage Door
Testing for balance, binding and sticking...................................................................................................3, 25, 27
Determining high point of travel:..........................................................................................................................11
Disabling existing locks....................................................................................................................................3, 10
Force Controls
Adjustment procedures.....................................................................................................................................25
Problems that might require force adjustments..........................................................................................30, 31
Safety warnings..........................................................................................................................................25, 27
Door hardware.........................................................................................................................3, 10, 11, 16, 27, 28
Maintenance Instruction Label.......................................................................................................................10, 16
Reinforcement requirements ...........................................................................................................................4, 22
Removing all ropes..........................................................................................................................................3, 10
Possible door damage...............................................................................................................................3, 14, 22
Travel Limits
Adjustment procedures.....................................................................................................................................24
Problems that might require limit adjustments............................................................................................30, 31
Safety warnings..........................................................................................................................................24, 27
Manual Release Rope & Handle
Lockout feature...................................................................................................................................................28
Manual disconnect........................................................................................................................................28, 31
Safety warnings................................................................................................................................10, 17, 27, 28
Opener Terminals
Door control connections....................................................................................................................................16
Safety reversing sensor connections..................................................................................................................21
Operational Noise
Sprocket noise....................................................................................................................................................10
Vibration noise (isolator kit) ................................................................................................................................30
Protector System®..........................................................................................................................................19, 26
Receiver and Remote Controls
Programming the receiver ...................................................................................................................................29
Erasing all codes .................................................................................................................................................29
Safety warning.....................................................................................................................................................29
Problems with remote control operation..............................................................................................................30
Safety Reverse Test Procedure..........................................................................................................................26
Testing required................................................................................................................................10, 26, 30, 31
Safety Reverse System Problems
Securing header bracket to wall .........................................................................................................................11
Adjusting travel limits..........................................................................................................................................24
Applying excessive force on the door.................................................................................................................25
Buckling or uneven floor.......................................................................................................................................4
Safety Warnings...............................................2, 3, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 22, 24, 25, 26, 27, 28, 29
User Instruction Label for garage wall ........................................................................................................10, 16
35
Page 36
CHAMBERLAIN SERVICE
IS ON CALL
OUR LARGE SERVICE ORGANIZATION
SPANS AMERICA
INST ALLATION AND SERVICE INFORMATION IS AS
NEAR AS YOUR TELEPHONE SIX DA YS A WEEK.
SIMPL Y DIAL OUR T OLL FREE NUMBER:
1-800-528-9131
HOURS: (Mountain Std. Time)
6:00 A.M. TO 6:00 P.M. - Monday through Friday
7:00 A.M. TO 3:00 P.M. - Saturday
Closed Sunday
For professional installation, parts and service,
contact your local CHAMBERLAIN dealer. Look for him
in the Yellow Pages, or call our Service number for a list
of dealers in your area.
HOW TO ORDER
REPAIR PARTS
Selling prices will be furnished on request or parts will
be shipped at prevailing prices and you will be billed
accordingly.
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE
THE FOLLOWING INFORMATION:
• PART NUMBER
• PART NAME
• MODEL NUMBER
ADDRESS ORDERS TO:
THE CHAMBERLAIN GROUP, INC.
Parts and Service Department
2301 N. Forbes Boulevard, Suite 104
Tucson, Arizona 85745
SERVICE INFORMATION
TOLL FREE NUMBER:
1-800-528-9131
CHAMBERLAIN GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTY
The Chamberlain Group, Inc. (“Seller”) warrants to the first retail purchaser of this product that it is free from defect in materials and/or
workmanship for a period of one year from the date of purchase. The proper operation of this product is dependent on your
compliance with the Owner’s Manual instructions regarding installation, operation, maintenance and testing. Failure to
comply strictly with those instructions will void this warranty in its entirety. Please note that the safety reverse system, in
order to operate properly with your garage door, must be adjusted and periodically tested in accordance with the Owner’s
Manual.
If, during the limited warranty period, it appears as though this product contains a defect which is covered by this limited warranty, call
our toll free service number, before dismantling this product, at 1-800-528-9131. Then send this product, pre-paid and insured,
to our service center for warranty repair. You will be advised of shipping instructions when you call the toll free service number. Please
include a brief description of the problem and a dated proof-of-purchase receipt with any product that is returned for warranty repair.
Products returned to Seller for warranty repair, which upon receipt by Seller are confirmed to be defective and covered by this limited
warranty, will be repaired or replaced (at Seller’s sole option) at no cost to you and returned pre-paid. Defective parts will be repaired
or replaced with new or factory-rebuilt parts at Seller’s sole option.
THIS LIMITED WARRANTY IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR OTHERWISE, AND OF ANY OTHER
OBLIGATIONS OR LIABILITY ON SELLEER’S PART. THIS LIMITED WARRANTY DOES NOT COVER NON-DEFECT DAMAGE,
DAMAGE CAUSED BY IMPROPER INSTALLATION, OPERATION OR CARE (INCLUDING, BUT NOT LIMITED TO ABUSE,
MISUSE, FAILURE TO PROVIDE REASONABLE AND NECESSARY MAINTENANCE, OR ANY ALTERNATIONS TO THIS
PRODUCT), LABOR CHARGES FOR DISMANTLING OR REINSTALLING A REPAIRED OR REPLACED UNIT, OR
REPLACEMENT BATTERIES.
UNDER NO CIRCUMSTANCES SHALL SELLER BE LIABLE FOR CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES
ARISING IN CONNECTION WITH THE USE, OR INABILITY TO USE, THIS PRODUCT. IN NO EVENT SHALL SELLER’S
LIABILITY FOR BREACH OF WARRANTY, BREACH OF CONTRACT, NEGLIGENCE OR STRICT LIABILITY EXCEED THE COST
OF THE PRODUCT COVERED HEREBY. NO PERSON IS AUTHORIZED TO ASSUME FOR US ANY OTHER LIABILITY IN
CONNECTION WITH THE SALE OF THIS PRODUCT.
Some states do not allow the exclusion or limitation of consequential, incidental or special damages, so the above limitation or
exclusion may not apply to you. This limited warranty gives you specific legal rights, and you may also have other rights which vary
from state to state.
LIMITED WARRANTY ON MOTOR
Model CSO: The motor is warranted to be free from any defect in materials and/or workmanship for a period of
12 full months (1 year) from the date of purchase.
© 1996, The Chamberlain Group, Inc.
114A2007 All Rights Reserved Printed in Mexico
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