Chamberlain Garage Door Opener 1280 1 2 HP User Manual

The Chamberlain Group, Inc.  
A DUCHOSSOIS ENTERPRISE  
845 Larch Avenue  
TM  
Elmhurst, Illinois 60126-1196  
Complies with UL 325  
Regulations effective  
January 1, 1993  
®
Garage Door Opener  
OWNER'S MANUAL  
Model 1280  
- 1/2 HP -  
For Residential Use Only  
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 and adjustment of the opener are required to ensure safe  
operation.  
The model number label is located under the light lens on the left side panel  
of your opener as shown.  
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CAUTION  
WARNING  
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.  
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!  
Operation at other than 120V 60 Hz will cause  
opener malfunction and damage.  
Test your Door  
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.  
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.  
Identify the type and height of your door, any special  
conditions that exist, and any additional materials that  
may be required, by referring to page 4.  
• Raise and lower the door to see if there is any  
binding or sticking.  
SECTIONAL DOOR  
ONE-PIECE DOOR  
Safety Reversing Sensor  
Installation Hardware  
Installation Hardware  
Hex Screw 5/16"-18 x 7/8" (4)  
Hex Screw #8 x 3/8" (2)  
Screw 6AB x 1" (2)  
Insulated Staples (10)  
Lag Screw 1/4 x 1-1/2" (4)  
Hex Screw 1/4-20 x 1-1/2" (2)  
Carriage Bolts 1/4" - 20 x 1/2" (4)  
Screw #10 - 32 x 3/8" (4)  
Lock Nut 1/4" - 20 (4)  
Lag Screw 5/16"-18 x 1-7/8" (4)  
Carriage Bolt 5/16"-18 x 2-1/2" (2)  
Clevis Pin 5/16" x 2-3/4" (1)  
Clevis Pin 5/16" x 1" (2)  
Ring Fastener (3)  
Handle  
Dry Wall Anchors (2)  
Rail Grease  
Rope  
Lock Nut #10 x 32 (4)  
Wing Nut (2)  
Nut 5/16" - 18 (6)  
Lock Washer 5/16" (6)  
Insulated Staples (20)  
3
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Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.  
SECTIONAL Door or ONE-PIECE Door  
with Track Installation  
FINISHED CEILING  
Support bracket &  
fastening hardware  
is required.  
Horizontal and vertical reinforcement  
is needed for lightweight garage doors  
(fiberglass, steel, aluminum, door with glass panels, etc.).  
See page 20 for details.  
See page 13.  
Slack in belt tension  
is normal when  
garage door is closed.  
Header Wall  
Extension Spring  
OR  
OR  
One-Piece Door-Extension Spring  
Torsion Spring  
Header  
Wall  
Door Center  
Access Door  
Track  
Door  
Safety  
Reversing  
Sensor  
Floor must be level  
across width of door  
Safety Reversing Sensor  
FINISHED CEILING  
Support bracket  
& fastening  
ONE-PIECE Door Without Track Installation  
hardware is required.  
See page 13.  
Header  
Wall  
Access Door  
Safety  
Reversing  
Sensor  
Gap between floor and bottom of  
door must not exceed 1/4".  
Safety Reversing Sensor  
You may find it helpful to refer back to this page as you proceed with the installation of your opener.  
4
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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 is listed on page 4.  
LOCK  
LIGHT  
Belt Cap Retainer  
Remote Control  
Transmitter Visor Clip  
Remote Control  
Transmitter (1)  
with 12V battery  
Multi-Function  
Door Control Panel  
Styrofoam  
Belt  
Light Lens (2)  
2-Conductor Bell Wire  
White & White/Red  
One-Piece  
T-rail  
Trolley  
Belt  
Pulley Bracket  
Door Bracket Plate  
CEILING MOUNT ONLY  
UP  
Header Bracket  
"C" Wrap (2)  
Door Bracket  
Straight Door  
Arm Section  
Safety Reversing Sensor  
Mounting Bracket  
With Square Holes (2)  
Safety Reversing Sensor (2)  
(1) Sending Eye  
(1) Receiving Eye  
Curved Door  
Arm Section  
Safety Labels  
and  
Literature  
Safety Reversing Sensor  
Mounting Bracket  
With Slot (2)  
2-Conductor Bell Wire with Connector  
White & White/Black (2 rolls)  
5
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Assembly Section: Pages 6 - 7  
ASSEMBLY STEP 1  
CAUTION  
Attach the T-Rail To the Opener  
To fasten rail, use only those screws mounted  
in the top of the opener. Any other screws will  
cause serious damage to the opener.  
Washered Screw  
5/16"-18x1/2"  
• Remove the two washered screws mounted in top  
of opener.  
Styrofoam  
• Align T-rail and styrofoam over opener sprocket.  
• Cut tape from T-rail, belt and styrofoam.  
REMOVE STYROFOAM.  
Belt  
USE ONLY THIS  
TYPE AND SIZE  
SCREW  
T-Rail  
Hole  
• Insert both washered screws through the T-rail  
into the opener. Tighten both screws securely .  
Washered Screw  
5/16"-18x1/2"  
USE ONLY THESE SCREWS! Any other screws  
will cause serious damage to the opener.  
Opener  
Sprocket  
T-Rail  
Hole  
Position belt over the opener sprocket.  
Belt  
T-Rail  
Hole  
Figure B  
Trolley  
Threaded  
Shaft  
ASSEMBLY STEP 2  
Set the Belt Tension  
Nut  
Ring  
Square End  
Figure A  
Trolley  
Nut Ring  
Slots  
Trolley  
Threaded  
Shaft  
Trolley  
• Place a 7/16" open end wrench on the square  
end. Rotate about 1/4 turn until the spring releases  
and snaps the nut ring against the trolley (Figure C).  
Spring  
Trolley Nut  
• By hand, thread the spring trolley nut on the  
threaded shaft until it is finger tight against the  
trolley (Figure A). Do not use any tools.  
This extends the spring for optimum belt tension.  
Figure C  
• Insert a screwdriver tip into one of the nut ring  
slots and brace it firmly against the trolley  
(Figure B).  
Trolley  
Nut Ring  
Trolley  
Nut Ring  
BEFORE  
1"  
AFTER RELEASE  
1-1/4"  
6
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ASSEMBLY STEP 3  
Attach the Belt Cap Retainer  
WARNING  
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.  
• Position the belt cap retainer over the opener  
sprocket so the two holes in cap align with the two  
holes in mounting plate. Attach with #8x3/8" hex  
screws provided.  
Hex Screws  
# 8 x 3/8"  
Belt Cap  
Retainer  
Opener Sprocket  
Mounting Plate  
Hardware Shown Actual Size  
Belt  
Hex Screw  
#8 x 3/8"  
You have now finished assembling your garage door opener. Please read the following  
warnings before proceeding to the Installation section.  
IMPORTANT INSTALLATION INSTRUCTIONS  
WARNING  
WARNING  
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  
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.  
7
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Installation Section: Pages 8 – 23  
Installation Step 1  
Determine Header Bracket Location  
WARNING  
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.  
Installation procedures vary according to  
garage door types. Follow the instructions  
which apply to your door.  
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.  
SECTIONAL Doors and One  
Piece Door With Track  
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 of the  
left or right of the door center only if  
a torsion spring or center bearing  
plate is in the way; or you can attach  
it to the ceiling (refer to page 10)  
when clearance is minimal.  
Vertical  
Guideline  
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 9.  
Ceiling  
Header  
Wall  
2"  
Header  
Wall  
2"  
• 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.  
Track  
Track  
Highest Point  
of Travel  
Highest Point  
of Travel  
Door  
Door  
Sectional door  
with curved track  
One-piece door with  
horizontal track  
Proceed to Step 2, page 10.  
8
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ONE-PIECE Door Without Track  
Read the Safety Instructions on page 8. They also apply to doors without tracks.  
Unfinished  
Ceiling  
Header Wall  
Vertical  
Centerline  
2x4  
• Close the door and mark the  
Structural Supports  
inside vertical centerline of  
your garage door. Extend the  
line onto the header wall  
above door.  
If headroom clearance is  
minimal, you can install the  
header bracket on the ceiling.  
See page 10.  
2x4  
Vertical  
Centerline of  
Garage Door  
Header Support  
OPTIONAL CEILING MOUNT  
FOR HEADER BRACKET  
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.  
Header Wall  
Highest Point  
Highest Point  
of Travel  
Header  
Wall  
of Travel  
Door  
Door  
Jamb  
Hardware  
Pivot  
One-piece door without track  
jamb hardware  
One-piece door without track  
pivot hardware  
• 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).  
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.)  
• Close the door and draw an intersecting horizontal  
line on the header wall at the determined height.  
If the total number of inches exceeds the height  
available in your garage, use the maximum  
height possible, or refer to page 10 for ceiling  
installation.  
Proceed to Step 2, page 10.  
9
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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.  
Installation Step 2  
Install the Header Bracket  
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.  
Wall  
Mounting Holes  
Vertical  
Center  
Header  
Wall  
Line  
Lag Screws  
5/16"x9x1-5/8"  
CEILING MOUNT ONLY  
CEILING OUNT ONLY  
UP  
Header  
Bracket  
UP  
2x4  
Structural  
Support  
Door  
Spring  
The nail hole is for positioning  
only. You must use lag screws to  
mount the header bracket.  
Optional  
Wall Mounting  
Holes  
2"  
Garage  
Door  
Hardware Shown Actual Size  
Highest  
Point of Travel  
(of Garage Door)  
Vertical  
Center  
Line  
Lag Screw  
5/16"-9 x 1-5/8"  
Fasten the Header Bracket to the Ceiling  
• Extend the vertical guideline onto the ceiling as  
shown.  
Finished  
Ceiling  
• 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.  
Vertical  
Center Line  
• 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  
U P  
6" Maximum  
Ceiling Mounting Holes  
Door  
Spring  
Lag Screws  
5/16"x9x1-5/8"  
CEILING MOUNT ONLY  
UP  
Header  
Wall  
Vertical  
Center Line  
Garage  
Door  
The nail hole is for positioning only.  
You must use lag screws to mount  
the header bracket.  
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Installation Step 3  
Attach the T-rail to the Header Bracket  
• Position the opener on the garage floor below the  
header bracket. Use packing material as a  
protective base.  
Header Wall  
k  
If the door spring is in the way you'll need help.  
Header  
Bracket  
Have someone hold the opener securely on a  
temporary support to allow the T-rail to clear the  
spring.  
Belt Pulley  
Bracket  
• 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.  
Ring Fastener  
T-rail  
Header Bracket  
Clevis Pin  
5/16"x2-3/4 "  
Belt Pulley  
Bracket  
T-rail  
Garage  
Door  
Temporary  
Support  
Hardware Shown Actual Size  
Clevis Pin  
5/16" x 2-3/4"  
Ring Fastener  
11  
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Installation Step 4  
Position the Opener  
Follow instructions which apply to your door  
type as illustrated.  
CAUTION  
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.  
T-rail  
2x4  
• 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.  
Door  
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.  
Stepladder  
Trolley  
Release Arm  
Trolley  
ONE-PIECE Door without Track  
Header  
Bracket  
• With the door fully open and parallel to the floor,  
measure the distance from the floor to the top of  
the door.  
Top of Opener  
Top of 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.  
Stepladder  
12  
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Installation Step 5  
Hang the Opener  
WARNING  
The opener could fall and injure someone if it  
is not properly secured. Fasten the opener  
securely to structural supports of the garage.  
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.  
Figure 1  
Structural  
Supports  
Measure the distance from each side of the opener  
to the structural support.  
• Cut both pieces of the hanging bracket to required  
lengths.  
Lag Screws  
5/16"-18x1-7/8  
Drill 3/16" pilot holes in the structural supports.  
Measure  
Distance  
• Attach one end of each bracket to a support with  
5/16" - 18x1-7/8" lag screws.  
5/16"-18x7/8"  
Hex Screws  
5/16" Lock Washers  
5/16"-18 Nuts  
• Fasten the opener to the hanging brackets with  
5/16" - 18x7/8" 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.  
Figure 2  
Grease the top and underside of the  
rail surface where the trolley  
slides. A tube of grease is  
supplied.  
— FINISHED CEILING —  
Bracket  
(Not Supplied)  
Hidden  
Support  
Lag Screws  
5/16"-18x1-7/8"  
Hardware Shown Actual Size  
(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  
Lag Screw  
5/16"-18x1-7/8"  
Hex Screw  
5/16"- 18 x 7/8"  
Lockwasher 5/16"  
Nut 5/16" - 18  
13  
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Installation Step 6  
WARNING  
Install the Multi-Function  
Door Control Panel  
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 button(s) or the  
remote control transmitter(s).  
• 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 by color: 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 Multi-Function Door Control securely  
with 6ABx1" screws. If installing into drywall, drill  
5/32" holes and use the anchors provided.  
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.  
• 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, creating a short.  
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.  
• Receiver terminal screws and the antenna are  
located on the right panel of the opener. Position  
the antenna wire as shown.  
See Safety Reversing Sensor Instructions  
beginning on page 17.  
• 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.  
Outside Keylock Accessory Connections  
To opener terminal screws: white to 2; white/red to 1  
If the label adhesive will not adhere to your garage  
s
to secure the label alongside the door control.  
5
wall surface (or becomes loose with time) use tacks  
Multi-Function  
Door Control Panel  
Terminal Screws  
Page 28 explains how to operate the opener using  
the lighted push button and the Lock & Light  
features available on the Multi-Function Door  
Control Panel.  
RED  
1
WHITE  
2
Hardware Shown Actual Size  
6AB x 1" Screw  
Multi-Function Door Control  
Insulated  
Staples  
Dry Wall Anchors  
Opener  
Terminal Screws  
Lock Button  
LOCK  
TO PROGRAM RECEIVER CODE  
1
LIGHT  
2
3
FOR EACH REMOTE CONTROL  
1. Press and HOLD remote control  
transmitter push button.  
Light Button  
2. Press receiver code button. The opener  
light will flash once.  
3. Release transmnitter button. Opener  
has learned code.  
TO ERASE ALL RECEIVER CODES  
9
9
1
1
1. Press and HOLD receiver code button.  
Green indicator light alongside will turn  
ON.  
7
3
7
3
5
5
2. When light turns OFF (about  
6
K
G
K
G
seconds) ALL codes are erased from  
opener memory.  
This device complies  
with FCC Rules Part  
15. Operation of this  
device is subject to the  
following conditions:  
1. This device may  
not cause harmful  
interference. 2. This  
device must accept  
any interference  
WARNING: To reduce the risk of severe injury  
or death by entrapment, when adjusting either  
the force or limits of travel controls ensure that  
inch object (or  
board laid flat). See instructions for proper  
adjustment procedure.  
AVERTISSEMENT: Pour réduire les risques de  
blessures mortelles par happement, après tout  
réglage de la force de déclenchement ou des  
seuils de fin de course s'assurer que le sens de  
la course s'inverse lorsque la porte entre en  
contact avec un object de 13 mm (1 po) de  
the door reverses on  
a
1
a
2
x
4
that may be received,  
including interference  
that may cause  
hauteur (ou un madrier de  
plat) posé sur le sol. Effectuer les reglages  
selon les procédures décrites dans la notice.  
PART NO: Nº DE PIÈCE:  
2
x
4
de section,  
à
undesired operation.  
Door Control  
Button  
D.O.C. CERT. NO. DATE:  
PAT. #RE29,525; 4,750,201; 4,806,930 Other Patents Pending.  
M.D.C. CERT. NO. 132C2105-1  
Multi-Function  
Door Control Panel  
Right Panel  
of Opener  
Antenna  
14  
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Installation Step 7  
Install the Lights and the Lenses  
• 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.  
Lens  
Guide  
• If the bulbs burn out prematurely due to vibration,  
replace them with "Garage Door Opener" bulbs.  
75 Watt Max.  
Light Bulb  
• Slide lenses into guides as shown. Snap bottom  
tabs into lens slots.  
Lens Tab  
For convenience, the lenses may be installed  
after Adjustment Step 4 on page 26.  
75 Watt Max.  
Light Bulb  
• Reverse the procedure to remove the lenses.  
Lens Slot  
Lens Tab  
Installation Step 8  
Attach the Manual Release  
Rope and Handle  
WARNING  
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.  
Overhand  
Knot  
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.  
Trolley  
Trolley  
Release Arm  
Rope  
The knot should be at least 1" from the end of the  
rope to prevent slipping.  
NOTICE  
• Thread the other end of the rope through the hole in  
the release arm of the outer trolley.  
Manual  
Release Handle  
Overhand  
Knot  
• 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.  
15  
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Installation Step 9  
Electrical Requirements  
WARNING  
To prevent electrocution or fire, installation  
and wiring must be in compliance with local  
electrical and building codes.  
To reduce the risk of electric shock, your garage  
door opener has a grounding type plug with a third  
grounding pin. This plug will only fit into a grounding  
type outlet.  
If the plug doesn't fit into the outlet you have,  
contact a qualified electrician to install the proper  
outlet.  
Right  
Wrong  
To avoid installation difficulties,  
do not run the opener at this time  
• Do not change the plug in any way.  
• Do not use a 2-wire adapter.  
• Do not use an extension cord.  
If permanent wiring is required by your local code, refer to the following procedure:  
WARNING  
To prevent electrocution, remove power  
from the garage door opener and from the  
circuit you plan to use for the permanent  
connection.  
To make a permanent connection through the 7/8"  
diameter hole in the top of the opener (according to  
local code):  
Permanent Wiring  
Connection  
• Remove the opener cover screws and set the  
cover aside.  
• Remove the attached 3-prong cord.  
Ground Tab  
Green  
Ground Screw  
• Connect the black (line) wire to the screw on the  
brass terminal; the white (neutral) wire to the  
Ground Wire  
screw on the silver terminal; and the ground wire  
to the green ground screw. The opener must be  
Black  
Wire  
grounded.  
• Reinstall the cover.  
White Wire  
BlackWire  
To avoid installation difficulties,  
do not run the opener at this time  
16  
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The Protector System®  
Information you'll need before you begin the installation of the safety reversing sensor.  
The safety reversing sensor must be connected  
and aligned correctly before the garage door  
opener will move in the down direction. This is a  
required safety device and cannot be disabled.  
WARNING  
Without a properly working safety reversing  
sensor, persons (particularly children) could be  
injured or killed by a closing garage door. Read  
and follow all instructions.  
Installation procedures are the same for sectional  
and one-piece doors.  
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.  
Sensor Beam  
4-6" max.  
Sensor Beam  
4-6" max.  
above floor  
above floor  
Invisible Light Beam  
Protection Area  
Figure 1  
Facing the door from inside the garage  
Be sure power to the opener is disconnected.  
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 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.  
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.  
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 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.  
17  
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Figure 2  
Installation Step 10  
Install the Safety Reversing Sensor  
(Receiving and Sending Eyes)  
Garage WALL or DOOR TRACK Installation  
Mounting Bracket  
With Square Holes  
"C" Wrap  
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 17, or on the garage  
door tracks themselves.  
#10-32x3/8"  
Screws  
#10 - 32  
Lock Nuts  
Figure 3  
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 Installation  
1/4 x 1-1/2"  
Lag Screws  
1/4-20 x 1/2" Carriage Bolts  
(with square shoulder)  
Inside  
Garage  
Wall  
Garage Wall or Door Track Installation  
Procedure  
Fasten the "C" wraps to the mounting brackets  
having square holes, using the hardware shown in 2.  
Garage Wall Installation Procedure  
"C" Wrap  
• Connect each assembly to a slotted bracket, using  
the hardware shown in 3. Note alignment of  
brackets for left and right sides of the door.  
• Finger tighten the lock nuts.  
Mounting Bracket  
with Slot  
Mounting Bracket  
with Square Holes  
1/4" - 20  
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 17.)  
• Attach bracket assemblies with 1/4"x1-1/2" lag  
screws as shown in 3.  
Figure 4  
Garage DOOR Track Installation  
1/4 " Lock Nuts  
Inside  
Garage  
Door Track  
Mounting Bracket  
with Square Holes  
Garage  
Wall  
• 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.  
Drill 3/8"  
Holes  
"C" Shaped  
Wrap  
Garage Door Track Installation Procedure  
Discard slotted bracket. Drill 3/8" holes in each track  
and fasten securely with hardware as shown in 4.  
1/4-20 x 1/2"  
Carriage Bolts  
Hardware Shown Actual Size  
#10 x 32  
Lock Nut  
1/4 x 1-1/2"  
Lag Screw  
1/4" - 20 x 1/2"  
Carriage Bolts  
#10 - 32 x 3/8"  
Screw  
1/4" - 20  
Lock Nut  
Staples  
Alternate Wall Mount  
Figure 5  
Figure 6  
Alternate Floor Mount  
Inside  
Garage  
Wall  
Inside  
Garage  
Wall  
Indicator Light  
Sensor  
Mounting Bracket  
with Slot  
Mounting Bracket  
with Square Holes  
Mounting Bracket  
with Square Holes  
"C" Wrap  
Mounting Bracket  
with Slot  
"C" Wrap  
Sensor  
Attach with  
concrete anchors  
(not provided)  
Indicator Light  
Garage  
Floor  
Garage  
Floor  
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Center each sensor unit in a "C" wrap with lenses  
pointing toward each other across the door (see  
Figure 7).  
Figure 7  
Wing  
Nut  
"C" Wrap  
Indicator  
Light  
• 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.  
Sensor  
with Wire  
1/4-20 x 1-1/2"  
Hex Bolt  
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.  
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.  
Aligning the Safety Sensors  
Plug in the opener. Green indicator lights in both  
the sending and receiving eyes will glow steadily if  
wiring connections and alignment are correct.  
• 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:  
The sending eye indicator light will glow regardless  
of alignment or obstruction. If the indicator light is  
off, dim or flickering in the receiving eye (and the  
invisible light beamm path is not obstructed),  
alignment is required.  
• Check alignment.  
• Check for an open wire to the receiving eye.  
3. If the receiving eye indicator light is dim, realign  
either sensor.  
• Loosen the sending eye wing nut and re-adjust,  
aiming directly at the receiving eye. Lock in place.  
NOTE: When the invisible beam path is obstructed or  
misaligned while the door is closing, the door will  
reverse. If the door is already open, it will not close.  
The opener lights will flash 10 times. (If bulbs are not  
installed, 10 clicks are audible.) See page 17.  
• Loosen the receiving eye wing nut and adjust  
sensor vertically and/or horizontally until it receives  
the sender’s beam. When the green indicator light  
glows steadily, tighten the wing nut.  
Hardware Shown Actual Size  
1/4-20 x 1-1/2"  
Hex Bolt  
Wing Nut  
Connect Wire to  
Opener Terminals  
Finished  
Bell Wire  
Ceiling  
Door Control  
Connections  
(dotted line)  
Sensor  
Connections  
Bell Wire  
1
2
3
OPENER TERMINAL SCREWS  
Sensor  
Invisible Light Beam  
Protection Area  
Sensor  
19  
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Installation Step 11  
Fasten Door Bracket  
CAUTION  
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.  
Follow instructions which apply to your door  
type as illustrated below or on page 21.  
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.  
SECTIONAL Door Installation Procedure  
Header  
Bracket  
Horizontal and vertical reinforcement  
is needed for lightweight garage doors  
(fiberglass, aluminum, steel,  
doors with glass panel, etc).  
Figure 1  
Vertical  
Reinforcement  
Door  
Bracket  
Location  
Lock Washer  
5/16"  
Carriage Bolt  
5/16"-18x2-1/2"  
Vertical  
Guideline  
Door  
Bracket  
Nut  
5/16"-18  
Vertical  
Guideline  
Figure 2  
Inside Edge  
of Door or  
Reinforcement Board  
Door  
Bracket  
• Center the door bracket on the previously marked  
vertical guideline used for the header bracket  
installation.  
Door Bracket  
Plate  
• 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.  
Hardware Shown Actual Size  
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.  
Nut 5/16" - 18  
Lockwasher 5/16"  
If your installation doesn't require vertical reinforce-  
ment 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.  
Carriage Bolt  
5/16"-18 x 2-1/2"  
20  
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All ONE-PIECE Door Installation Procedure  
Please read and comply with the warnings and reinforcement instructions on page 20.  
They apply to one-piece doors also.  
Header Wall  
— Finished Ceiling —  
2x4 Support  
Header  
Bracket  
Horizontal and vertical  
reinforcement is needed for  
lightweight garage doors  
(fiberglass, aluminum, steel,  
door with glass panel, etc.).  
Optional  
Placement  
of Door  
Door  
Bracket  
Bracket  
Vertical  
Centerline of  
Garage Door  
Nut  
5/16"-18  
Lock Washer  
5/16"  
Top of Door  
(Inside Garage)  
Door  
Bracket  
Top Edge  
of Door  
Optional  
Placement  
Carriage Bolt  
5/16"-18x2-1/2"  
For a door with no  
exposed framing or for  
the optional installation,  
use 5/16"x1-1/2" lag  
screws (not supplied) to  
fasten door bracket.  
• Center the bracket on the top of the door, in line  
with the header bracket as shown. Mark holes.  
Hardware Shown Actual Size  
• Drill 5/16" pilot holes and fasten the door bracket  
with hardware supplied.  
If the door has no exposed framing, drill 3/16" pilot  
holes and fasten the bracket with 5/16"x1-1/2" lag  
screws (not supplied) to the top of the door.  
Nut 5/16" - 18  
Lockwasher 5/16"  
The door bracket may be installed on the top  
edge of the door if required for your installation.  
(Refer to the dotted line optional placement  
drawing.) Drill 3/16" pilot holes and substitute  
5/16"x1-1/2" lag screws (not supplied) to fasten  
the bracket to the door.  
Carriage Bolt  
5/16"-18 x 2-1/2"  
21  
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Installation Step 12  
Connect Door Arm to Trolley  
Follow instructions which apply to your door  
type as illustrated below and on page 23.  
SECTIONAL Doors Only  
Make sure garage door is fully closed. Pull the emergency 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 1-3.  
Figure 1:  
Figure 2:  
Fasten straight door arm section to outer trolley  
with a clevis pin. Secure the connection with a ring  
fastener.  
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.  
• Fasten curved section to the door bracket in the  
same way as shown.  
Inner Trolley  
Outer Trolley  
Lock  
Washers  
5/16"  
Rope  
Clevis  
Pin  
Ring  
Fastener  
Manual  
Release  
Handle  
Nuts  
5/16"-18  
Door  
Screws  
5/16"-18x7/8"  
Straight  
Bracket  
Door Arm  
Door Bracket  
Curved  
Door Arm  
Clevis Pin  
Figure 1  
Figure 2  
Hole Alignment Alternative  
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  
Hardware Shown Actual Size  
Screws  
5/16"-18x7/8"  
Nut 5/16" - 18  
Ring Fastener  
Lockwasher 5/16"  
Cut This End  
Figure 3  
Clevis Pin  
5/16" x 1"  
Hex Screw  
5/16"- 18 x 7/8"  
Proceed to Adjustment Step 1, page 24. Trolley will re-engage automatically when the opener is operated.  
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All ONE-PIECE Doors  
Door  
Bracket  
Assemble the Door Arm:  
Ring  
Fastener  
Fasten the straight and curved door arm sections  
together to the longest possible length (with a 2 or  
3 hole overlap).  
Nuts  
5/16"-18  
Lock  
Washers  
5/16"  
Clevis Pin  
Straight  
Arm  
• With the door closed, connect the straight door  
arm section to the door bracket with a clevis pin.  
Screws  
5/16"-18x7/8  
• Secure with a ring fastener.  
Curved  
Door Arm  
On one-piece doors, before connecting the door arm to the trolley the travel limits must be adjusted. Limit adjust-  
ment screws are located on the left side panel as shown on page 24. Follow adjustment procedures below.  
Fully Closed  
Trolley  
Fully Open  
Trolley  
Door Arm  
Connector Hole  
Door Arm  
Door Arm  
Connector Hole  
Closed  
Door  
Door with  
Backward Slant  
Door Arm  
Open Door  
Adjustment Procedures for One-Piece Doors  
Open Door Adjustment:  
Decrease UP limit  
Closed Door Adjustment:  
Decrease DOWN limit  
• Turn the UP limit adjustment screw counter-  
clockwise 5 1/2 turns.  
• Turn the DOWN limit adjustment screw clockwise  
5 complete turns.  
• Press the Door Control push bar. The trolley will  
travel to the fully open position.  
• Press the Door Control push bar. The trolley will  
travel to the fully closed position.  
• Manually raise the door to the open position  
(parallel to the floor), and lift the door arm to the  
trolley. The arm should touch the trolley just in  
back of the door arm connector hole. Refer to the  
fully open trolley/door arm positions in the  
illustration. If the arm does not extend far enough,  
adjust the limit further. One full turn equals 2" of  
trolley travel.  
• Manually close the door and lift the door arm to the  
trolley. The arm should touch the trolley just ahead  
of the door arm connector hole. Refer to the fully  
closed trolley/door arm positions in the illustration. If  
the arm is behind the connector hole, adjust the limit  
further. One full turn equals 2" of trolley travel.  
Connect the door arm to the trolley.  
Close the door and join the curved arm to the connector hole in the trolley with the remaining clevis pin. It may  
be necessary to lift the door slightly to make the connection.  
• Secure with a ring fastener.  
• Run the opener through a complete travel cycle. If the door has a slight "backward" slant in full open position  
as shown in the illustration, decrease the UP limit until the door is parallel to the floor.  
23  
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Adjustment Section: Pages 24 – 26  
Adjustment Step 1  
Adjust the UP and DOWN Limits  
WARNING  
Improper adjustment of the travel limits will  
interfere with the proper operation of the safety  
reverse system. The door might not reverse  
when required and could seriously injure or kill  
someone under it. Test the safety reverse  
system following all adjustments to the travel  
limits. See page 26.  
Do not make any limit adjustments until the  
Safety Reversing Sensors are completely  
installed.  
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 push  
bar. Run the opener through a complete travel  
cycle.  
Left Side  
Panel  
• Does the door open and close completely?  
• Does the door stay closed and not reverse  
unintentionally when fully closed?  
INCREASE INCREASE  
DOWN  
UP  
TRAVEL  
TRAVEL  
If your door passes both of these tests, no limit  
adjustments are necessary unless the reversing  
test fails (see page 26).  
Limit Adjustment Screws  
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.  
INCREASE  
DOWN  
INCREASE  
UP  
TRAVEL  
TRAVEL  
Limit Adjustment Label  
Read the procedures carefully before proceeding to  
Adjustment Step 2. Use a screwdriver to make limit  
adjustments.  
How and When to Adjust the Limits  
If the door does not open completely  
but opens at least five feet  
If the opener reverses in fully closed position  
Decrease down travel. Turn the DOWN limit adjustment  
screw clockwise. One turn equals 2" of travel.  
Increase up travel. Turn the UP 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 door does not open at least 5 feet: Adjust the  
UP (open) force as explained in Adjustment Step 2.  
If the opener lights are flashing, the Safety Reversing  
Sensor is obstructed. Remove the obstruction.  
If the door does not close completely  
Increase down travel. Turn the DOWN limit  
adjustment screw counterclockwise. One turn  
equals 2" of travel.  
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.  
If door still won't close completely, try lengthening  
the door arm. (Page 22.)  
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 Step 1,  
pages 8/9.  
24  
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Adjustment Step 2  
Adjust the Force  
WARNING  
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 amount 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.  
Force adjustment controls are located on the right  
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 up direction 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.  
Force  
Adjustment  
Controls  
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.  
1
2
3
9
9
1
1
7
3
7
3
5
5
KG  
KG  
This device complies  
with FCC Rules Part  
15. Operation of this  
device is subject to the  
following conditions:  
1. This device may  
not cause harmful  
interference. 2. This  
device must accept  
any interference  
WARNING: To reduce the risk of severe injury  
or death by entrapment, when adjusting either  
the force or limits of travel controls ensure that  
the door reverses on  
a
1
inch object (or  
a
2
x
4
board laid flat). See instructions for proper  
adjustment procedure.  
AVERTISSEMENT: Pour réduire les risques de  
blessures mortelles par happement, après tout  
réglage de la force de déclenchement ou des  
seuils de fin de course s'assurer que le sens de  
la course s'inverse lorsque la porte entre en  
contact avec un object de 13 mm (1 po) de  
that may be received,  
including interference  
that may cause  
hauteur (ou un madrier de  
plat) posé sur le sol. Effectuer les reglages  
selon les procédures décrites dans la notice.  
PART NO: Nº DE PIÈCE:  
2
x
4
de section,  
à
undesired operation.  
D.O.C. CERT. NO. DATE:  
M.D.C. CERT. NO. 132C2105-1  
9
9
1
1
7
7
3
3
5
5
Right Panel  
of Opener  
KG  
KG  
Force Adjustment Label  
How and When to Adjust the Forces  
Test the DOWN (close) force  
Make 10 degree turn adjustments until the door stops  
easily. After each adjustment, run the opener through  
a complete travel cycle.  
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.  
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.  
Make 10 degree turn adjustments until the door  
reverses normally. After each adjustment, run the  
opener through a complete cycle.  
If the door reverses during the down (close) cycle  
and the opener lights aren't flashing  
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.  
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  
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Adjustment Step 3  
WARNING  
Test The Protector System®  
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.  
• Press the remote control push button to open the  
door.  
• Place the opener carton in the path of the door.  
• Press the remote control push button to close the  
door. The door will not move more than an inch,  
and the opener lights will flash for 5 seconds.  
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 push bar or button until  
down travel is completed.  
Professional service is required if the opener  
closes the door when the safety reversing  
sensor is obstructed.  
Safety Reversing Sensor  
Safety Reversing Sensor  
Adjustment Step 4  
Test the Safety Reverse System  
WARNING  
Failure to test and adjust the safety reverse  
system may result in serious injury or death  
from a closing garage door. Repeat this test  
once a month and adjust as needed.  
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.  
On a sectional door, make sure limit adjustments  
do not force the door arm beyond a straight up  
and down position. See the illustration on  
page 22.  
• When the door reverses on the one-inch board,  
remove the obstruction and run the opener through  
3 or 4 complete travel cycles to test adjustment.  
One-Inch board (or a 2x4 laid flat)  
If the door will not reverse after repeated  
adjustment attempts, call for professional  
garage door service.  
Important Safety Check  
Repeat Adjustment Steps 1–4 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.  
• Any repair to or adjustment of the opener.  
26  
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IMPORTANT SAFETY INSTRUCTIONS  
WARNING  
WARNING  
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 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 one of the  
controls (either force or limits of travel), the other control may need to be adjusted also, 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 PROPERLY BALANCED. See page 4. 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 to the garage door opener before making any repairs or removing the  
covers.  
8.  
SAVE THESE INSTRUCTIONS.  
Care of Your Opener  
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  
receiver 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.  
Limit Controls  
Force Controls  
9
9
1
1
INCREASE INCREASE  
7
7
3
3
DOWN  
TRAVEL  
UP  
TRAVEL  
5
5
KG  
KG  
Adjustment Label  
(Located on the left side panel)  
Adjustment Label  
(Located on the right side panel)  
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.  
Weather conditions may cause some minor  
changes in door operation requiring some re-  
adjustments, particularly during the first year of  
operation.  
If the power indicator light is dim or off, replace the  
battery. Also check the test light if transmission range  
decreases.  
Pages 24 and 25 refer to the limit and force  
adjustments. Only a screwdriver is required. Follow  
the instructions carefully.  
The 12 volt battery should produce power for at least  
a year.  
Repeat the safety reverse test (page 26) after any  
adjustment of limits or force.  
Dispose of your old battery properly.  
Maintenance Schedule  
Once a Month  
Once a Year  
Manually operate door. If it is unbalanced or  
Oil door rollers, bearings and hinge.  
binding, call for professional garage door service.  
The opener does not require additional  
lubrication.  
Check to be sure door opens & closes fully.  
Adjust limits and/or force if necessary. (See pages  
24 & 25.)  
Do not grease the door tracks.  
Repeat the safety reverse test. Make any  
necessary adjustments (See page 26).  
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27  
Operation of Your Opener  
Activate the opener with any of the following:  
• The Remote Control Transmitter. Hold push  
WARNING  
button down until the door starts to move.  
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.  
• The Door Control. Hold push bar 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.  
To open the door  
manually:  
3. If opening, the door will stop (allowing space for  
entry and exit of pets and for fresh air).  
Trolley  
Release Arm  
The door should be fully  
closed if possible. Pull  
down on the manual  
4. If the door has been stopped in a partially open  
position, it will close.  
Trolley  
release handle and lift the  
door manually. To  
reconnect the door to the  
Manual  
Release Handle  
(Pull Down)  
5. If obstructed while closing, the door will reverse.  
6. If obstructed while opening, the door will stop.  
NOTICE  
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.  
opener, press the Door  
Control push bar.  
Manual disconnect  
position  
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 lockout feature  
prevents the trolley from  
reconnecting automatically.  
Pull the manual release  
handle down and back  
(toward the opener). The  
door can then be raised  
Trolley  
Release Arm  
The opener lights will blink for 5 seconds when the  
safety reversing sensor causes the door to reverse.  
Trolley  
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.  
Manual  
Release Handle  
(Pull Down & Back  
Towards Opener)  
Opener Lights will turn on under the following  
conditions: When the opener is initially plugged in;  
when the power is interrupted; when the opener is  
activated. They will turn off automatically after 4-1/2  
minutes or provide constant light when the Light  
feature is activated. Bulb size is 75 watts maximum.  
NOTICE  
Lockout position  
Operation of the Multi-Function Door Control Panel  
Lighted Push Bar  
Lock Feature  
Press to open or close the door.  
The Lock feature is designed to prevent operation of  
the door from remote controls. However, the door will  
open and close from the Door Control push bar, the  
Outside Keylock and the Keyless Entry Accessories.  
Press again to reverse the door during the closing  
cycle or to stop the door while it's opening.  
Light Feature  
Press the Light button. If the opener light is off, it will  
turn on.  
To Activate:  
Press and hold the Lock button for 2 seconds. The  
push bar light will flash as long as the Lock feature  
is on.  
If the opener light is on, (even in the 4-1/2 minute  
automatic cycle) it will turn off.  
To Turn Off:  
But if you use the Light button to turn the light(s) on  
and then activate the opener, the light(s) will turn off  
after 4-1/2 minutes.  
Press and hold the Lock button for 2 seconds  
again.The push bar light will stop flashing. Normal  
operation will resume. The Lock feature will also turn  
off whenever the "Smart" button on the opener side  
panel is activated.  
The Light button will not control the opener lights  
when the door is in motion.  
28  
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Receiver & 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  
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(s) or remote  
control transmitter(s).  
Your garage door opener receiver and remote  
control transmitter have been set at the factory to a  
matching code. The door will activate when the  
remote control push button is pressed.  
Your "Smart" garage door opener will operate with:  
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.  
• 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 for programming your opener  
to match any additional remotes you may purchase.  
See available accessories on page 34.  
Figure 1  
Model 81LM  
"Smart"  
To Add a Single Function Remote Control  
Single Function Remote Control  
1. Press and hold the remote push button (Figure 1).  
Green Battery  
Indicator Light  
2. Then press and release the "Smart" button on the  
right side panel of the opener, Figure 2. The  
opener lights will flash once.  
3. Release the remote push button.  
Now the opener will operate when the remote  
control push button is pressed.  
Push Button  
If you release the remote control push button  
before the opener lights flash, the opener will  
not accept the code.  
To Change the Selected Push Button  
on the Same Remote  
Figure 2  
Garage Door Opener  
(With "Smart" Button)  
If you decide to use a different remote control button  
than originally programmed into the opener, you  
need to erase all the learned codes and reprogram  
each remote used to operate the garage door  
opener.  
1
2
3
9
9
1
1
To Erase all Remote Control Codes:  
7
7
3
3
5
5
• Press and hold the "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.  
KG  
KG  
"Smart"  
Button  
Indicator  
Light  
• To reprogram, repeat Steps 1 - 3 for each remote  
control in use.  
Code programming instructions are also located  
on the opener panel.  
29  
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Having a Problem?  
Situation  
Probable Cause & Solution  
The opener doesn't  
operate from either  
the door control or  
the remote control:  
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 7.  
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.  
Opener operates from 1. Is the door control push bar lit? If not, Remove the bell wire from the opener terminal  
remote control, but  
not from door control:  
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 14.  
The door operates  
from the door control,  
but not from the  
1. If your model has the Lock feature, turn it off.  
2. Is the wall push button flashing? Your opener needs to re-learn a remote control  
code. Refer to instructions on the opener panel.  
remote control:  
3. Does the battery test light glow when the remote control push button is pressed? If  
not, replace the battery.  
4. Program the receiver to match the remote control code.  
5. Repeat the receiver programming procedure with all remote controls.  
The remote control  
has short range:  
1. Check the battery test light. If the light is dim, replace the battery.  
2. Change the location of the remote control in your car.  
3. Check to be sure the antenna on the side or back panel of the opener extends fully  
downward.  
4. Some installations may have shorter range due to a metal door, foil backed  
insulation, or metal garage siding.  
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.  
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  
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Having a Problem? (continued)  
Situation  
Probable Cause & Solution  
The door opens but  
won't close:  
1. If the opener lights blink, check the safety reversing sensor. See page 19.  
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.  
The door reverses for  
no apparent reason  
and opener lights  
don'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.  
4. If door reverses in the fully closed position, decrease the travel limits (page 24).  
Repeat the safety reverse test after adjustments to force or travel limits. The need  
for occasional adjustment of the force and limit settings is normal. Weather  
conditions in particular can affect door travel.  
The door reverses for  
no apparent reason  
and opener lights  
blink for 5 seconds  
after reversing:  
Check the safety reversing sensor. Remove any obstruction or align the receiving eye.  
See page 19.  
The opener lights …  
don't turn on:  
Replace the light bulbs (75 watts maximum). Use a standard neck garage door opener  
bulb if regular bulb burns out.  
don't turn off:  
Is the Light feature on? Turn it off.  
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 belt was removed and reinstalled, the motor may be out of phase.  
Remove the belt; 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 belt.  
Repeat the safety reverse test after the adjustment is complete.  
The opener won't  
operate due to  
power failure:  
1. Use the manual release handle to disconnect the trolley. The door can be opened  
and closed manually. When power is restored, press the Door Control push bar 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.  
31  
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Repair Parts  
Rail Assembly Parts  
6
3
1
7
4
2
5
KEY  
NO.  
PART  
NO.  
DESCRIPTION  
1
2
3
4
5
6
7
8
1A995  
Master link kit  
Belt pulley bracket  
41A3588  
41B3869-1  
109B33  
183B99  
41A3589  
41B4103  
83A4  
Complete trolley assembly  
Trolley clip  
One-piece T-rail  
Full belt assembly  
Tensioner assembly  
Rail grease  
8
Installation Parts  
6
2
LOCK  
LIGHT  
4
5
3
12VDC  
1
NOTICE  
KEY  
NO.  
PART  
NO.  
9
DESCRIPTION  
7
8
CEILING MOUNT ONLY  
UP  
1
2
3
4
41A4202A  
10A14  
29C128  
Multi-function door control panel  
12V battery  
Transmitter visor clip  
Remote control case, cover & screw only  
(no circuit board)  
Manual release rope & handle assy.  
2-Conductor bell wire - white & white/red  
Door bracket  
41A3984-7  
11  
5
6
7
8
9
41A2828  
217A238  
12B374-1  
12B380-1  
41A4353-1  
41A4373  
10  
13  
Door bracket plate  
Header bracket w/clevis pin & fastener  
Safety sensor kit (receiving and sending  
eyes only)  
2-Conductor bell wire with connector  
white & white/black (2 rolls)  
Curved door arm section  
Straight door arm section  
C-wrap bracket  
10  
14  
11  
41B4115  
12  
12  
13  
14  
15  
16  
178B35  
178B34  
12B483  
12B484  
12B485  
Square hole bracket  
Slotted bracket  
16  
15  
NOT SHOWN  
41A4116  
41A2770-1  
Safety sensor hardware  
Installation hardware bag (includes  
hardware listed on page 4  
Owner's manual  
114A1893  
32  
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Repair Parts  
Opener Assembly Parts  
1
2
4
9
7
3
5
6
8
8
10  
11  
20  
12  
18  
19  
5
3
9
13  
15  
17  
14  
(Down)  
Contact  
16  
LIMIT SWITCH ASSY.  
Brown  
Wire  
D N  
Grey  
Wire  
U P  
Drive  
Gear  
Center Limit  
Contact  
(Up)  
Contact  
Yellow  
Wire  
KEY PART  
NO. NO.  
KEY PART  
DESCRIPTION  
NO.  
NO.  
DESCRIPTION  
1
2
41A4371  
41A4885  
Belt cap retainer  
Gear and sprocket assy.,  
Complete with:  
Spring washer  
Thrust washer  
Retaining ring  
Bearing plate  
Roll pins (2)  
Drive gear and worm gear  
Helical gear w/retainer and grease  
Drive/worm gear kit w/grease  
Roll pins (2)  
Line cord  
Wire harness assembly with plug  
10  
11  
12  
13  
30B363  
12A373  
41D3150  
41C4842  
Capacitor – 1/2 h.p.  
Capacitor bracket  
Terminal block w/screws  
Universal replacement motor &  
bracket assembly, Complete with:  
Motor, worm, bracket,  
bearing assembly, RPM sensor.  
14  
15  
16  
17  
18  
19  
20  
41A3583-7 Cover  
41A2818  
41D3452  
41C4398A RPM sensor assembly  
41A2826-1 Shaft bearing kit  
41A2822A Interrupter cup assembly  
Helical gear & retainer w/grease  
Limit switch assembly  
3
41A2817  
4
5
6
41B4245  
41C4876  
41A4889  
End panel  
41A4252-6C Receiver logic board assembly  
Complete with Logic board  
41A4888  
4A1344  
108D34  
NOT SHOWN  
Opener assembly hardware kit  
(includes screws not designated by  
a number in illustration.  
41A2825  
7
8
9
End panel w/all labels  
Light socket  
Lens  
33  
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Accessories Available For Your Opener  
Outside Quick Release:  
Model 81LM  
"Smart" Remote Control:  
Model 1702  
Model 60  
Required for a garage with NO  
access door.  
Includes visor clip.  
Outside Keylock:  
Model 61LM  
Single-Function Standard Size  
Remote Control:  
Opens the garage door  
automatically from outside when  
remote control is not handy.  
Includes visor clip.  
Model 1778LM  
Model 1770LM  
8 foot Complete Rail:  
To allow an 8 foot door to open fully.  
Model 82LM  
2-Channel Remote Control:  
Includes visor clip.  
10 foot Complete Rail:  
To allow a 10 foot door to open fully.  
Model 83LM  
3-Channel Remote Control:  
Includes visor clip.  
Model 66LM  
Model 722LM  
Keyless Entry:  
Enables homeowner to operate  
garage door opener from outside  
by entering code on specially  
designed keyboard.  
Model 84LM  
Model 99LM  
4-Channel Remote Control:  
Wire-In Light Control:  
Includes visor clip.  
Controls interior or exterior lights.  
Wires into the electrical box like a  
dimmer switch.  
Model 742LM  
Plug-In Light Control:  
Security Remote Control:  
Controls interior lights. Plugs into a  
wall receptacle.  
Operate garage door opener by  
entering 2-3-4 or 5 digit code from  
backlit keyboard. Includes visor  
clip.  
E
N
T
E
R
9
0
7
8
5
6
3
4
2
1
34  
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Index  
Access Door/Outside Quick Release Accessory........................................................................................31, 34  
Electrical Safety Warnings........................................................................................................................7, 16, 27  
Garage Door  
Testing for balance, binding and sticking...................................................................................................3, 24, 27  
Determining high point of travel:  
Sectional door.....................................................................................................................................................8  
One-piece door...................................................................................................................................................9  
Disabling existing locks......................................................................................................................................3, 7  
Force controls  
Adjustment procedures.....................................................................................................................................25  
Problems that might require force adjustments ..........................................................................................30, 31  
Safety warnings ..........................................................................................................................................25, 27  
Door hardware.............................................................................................................................3, 7, 8, 14, 27, 28  
Maintenance instruction label ..........................................................................................................................7, 24  
Reinforcement requirements .....................................................................................................................3, 20, 21  
Removing of all ropes........................................................................................................................................3, 7  
Possible door damage...............................................................................................................................3, 12, 20  
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  
Safety warnings ..................................................................................................................................7, 15, 27, 28  
Opener Terminals  
Door control connections....................................................................................................................................14  
Safety reversing sensor connections..................................................................................................................19  
Outside Keylock accessory connections ............................................................................................................14  
Operational Noise  
Sprocket noise......................................................................................................................................................7  
Vibration noise (isolator kit) ................................................................................................................................30  
The Protector® System ..................................................................................................................................17, 26  
Receiver & Remote Controls  
Programming the receiver ..................................................................................................................................29  
Erasing all codes ................................................................................................................................................29  
Safety warning....................................................................................................................................................29  
Problems with remote control transmitter operation ...........................................................................................30  
Safety Reverse Test Procedure..........................................................................................................................26  
Testing required..................................................................................................................................7, 26, 30, 31  
Safety reverse system problems  
Securing header bracket to wall .........................................................................................................................8  
Adjusting travel limits........................................................................................................................................24  
Applying excessive force on the door...............................................................................................................25  
Buckling or uneven floor .....................................................................................................................................4  
Safety Warnings........................................................2, 3, 6, 7, 8, 12,13, 14, 15, 16, 17, 20, 24, 25, 26, 27, 28, 29  
User Instruction Label for Garage Wall .........................................................................................................7, 14  
35  
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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.  
LIFT-MASTER SERVICE IS  
ON CALL  
OUR LARGE SERVICE ORGANIZATION  
SPANS AMERICA  
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE  
THE FOLLOWING INFORMATION:  
• PART NUMBER  
INSTALLATION AND SERVICE INFORMATION IS AS  
NEAR AS YOUR TELEPHONE SIX DAYS A WEEK.  
SIMPLY DIAL OUR TOLL FREE NUMBER:  
• PART NAME  
• MODEL NUMBER  
1-800-528-2817  
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  
ADDRESS ORDERS TO:  
THE CHAMBERLAIN GROUP, INC.  
Parts and Service Department  
2301 N. Forbes Boulevard, Suite 104  
Tucson, Arizona 85745  
For professional installation, parts and service,  
contact your local LIFT-MASTER/ CHAMBERLAIN  
dealer. Look for him in the Yellow Pages, or call our  
Service number for a list of dealers in your area.  
SERVICE INFORMATION  
TOLL FREE NUMBER:  
1-800-528-2817  
LIFT-MASTER GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTY  
Chamberlain/Lift-Master (“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 (1-800-528-2817). 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 SELLER’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 ALTERATIONS 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 1280  
The motor is fully warranted for the lifetime of the product to the first-time purchaser.  
© 1996, The Chamberlain Group, Inc.  
114A1945D-xxx  
All Rights Reserved  
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Printed in Mexico  

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