Chamberlain Garage Door Opener 1280 298LMC User Manual

®
TM  
Garage Door Opener  
Model 1280-298LMC  
- 1/2 HP -  
For Residential Use Only  
Owner's Manual  
Please read this manual and the enclosed safety materials carefully!  
Fasten the manual near the garage door after installation.  
The door WILL NOT CLOSE unless the Protector System® is connected and  
properly aligned.  
Periodic checks of the opener are required to ensure safe operation.  
The model number label is located under the light lens on the left side of  
your opener.  
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You'll Need Tools  
During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.  
Pencil  
Carpenter's  
2
1
Level  
Hack Saw  
Tape Measure  
Wire Cutters  
Drill  
Claw Hammer  
3/16", 5/16" and  
5/32" Drill Bits  
Pliers  
1/2" and 7/16" Sockets  
and Wrench  
Stepladder  
Screwdriver  
Adjustable End Wrench  
CAUTION  
WARNING  
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!  
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.  
Before you begin, complete the following test to  
make sure your door is balanced, and is not  
sticking or binding:  
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.  
• 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 and 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.  
ONE-PIECE DOOR  
SECTIONAL DOOR  
3
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Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.  
You may find it helpful to refer back to this page as you proceed with the installation of your opener.  
FINISHED CEILING  
Support bracket &  
fastening hardware  
is required.  
Sectional Door Installation  
See page 13.  
Horizontal and vertical reinforcement  
is needed for lightweight garage doors  
(fiberglass, steel, aluminum,  
door with glass panels, etc.).  
See page 20 for details.  
Header Wall  
Extension Spring  
OR  
Torsion Spring  
Access Door  
Door Center  
Safety  
Reversing  
Sensor  
Floor must be level  
across width of door  
Model 1702LMC Outisde Quick Release  
is required if there is no access door.  
Safety Reversing Sensor  
One-Piece Door Installation without Track  
FINISHED CEILING  
Support bracket  
& fastening  
hardware is required.  
See page 13.  
Header  
Wall  
One-Piece Door with Track  
Access Door  
Access  
Door  
Safety  
Reversing  
Gap between floor  
Sensor  
Safety  
Reversing Sensor  
and bottom of door  
Safety  
Reversing  
Sensor  
must not exceed 1/4".  
Floor must be level  
across width of door  
Safety  
Reversing Sensor  
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 for installation is  
also listed below.  
Remote Control  
LOCK  
Transmitter Visor Clip  
LIGHT  
SECURITY✚  
Keyless Entry  
SECURITY3-Channel  
Remote Control (2)  
Motion Detecting  
Door Control Panel  
Styrofoam  
Belt  
Belt Cap Retainer  
Light Lens (2)  
2-Conductor Bell Wire  
White & White/Red  
One-Piece  
T-rail  
CEILING MOUNT ONLY  
UP  
Curved Door  
Arm Section  
Header Bracket  
Trolley  
Door Bracket  
Belt  
Pulley Bracket  
Safety Labels  
and  
Literature  
Straight Door  
Arm Section  
(2) Safety Reversing Sensors  
(1 Sending Eye and 1 Receiving Eye)  
with  
2-Conductor White & White/Black Bell Wire  
attached  
Safety Sensor  
Bracket (2)  
INSTALLATION HARDWARE  
Insulated Staples (10)  
Ring Fastener (3)  
Dry Wall Anchors (2)  
Rope  
Handle  
Rail Grease  
Hex Screw 5/16"-18x7/8" (4)  
Hex Screw #8x3/8" (2)  
Lag Screw 5/16"-9x1-5/8" (2)  
Lag Screw 5/16"-18x1-7/8" (2)  
Carriage Bolt 5/16"-18x2-1/2" (2)  
Clevis Pin 5/16"x2-3/4" (1)  
Clevis Pin 5/16"x1-1/4" (1)  
Clevis Pin 5/16"x1" (1)  
Nut 5/16"-18 (6)  
SAFETY REVERSING SENSOR  
INSTALLATION HARDWARE  
Carriage Bolt 1/4"-20x1/2" (2)  
Wing Nut (2)  
Insulated Staples (20)  
Lock Washer 5/16" (6)  
Screw 6ABx1-1/4" (2)  
Screw 6-32x1" (2)  
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"  
Styrofoam  
• Remove the two washered screws mounted in top  
of opener.  
• Align T-rail and styrofoam over opener sprocket.  
• Cut tape from T-rail, belt and styrofoam.  
REMOVE STYROFOAM.  
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  
belt cap retainer 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  
Hex Screw  
#8x3/8"  
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  
may not reverse and could result in severe injury or death. Repairs to cables, spring assemblies  
and other hardware must be made by a professional service person before installing opener.  
3. Disable all locks and remove all ropes connected to the garage door before installing the opener.  
Ropes connected to a garage door can cause entanglement and death.  
4. If possible, install door opener 7 feet or more above floor with the manual release handle  
mounted 6 feet above the floor.  
5. Do not connect the opener to power source until instructed to do so.  
6. Locate the Door Control within sight of the door at a minimum height of 5 feet where small  
children cannot reach and away from all moving parts of the door.  
7. Install the User Safety Instruction Label on the wall adjacent to the control button and the  
Maintenance Instruction Label in a prominent location on the inside of the garage door.  
8. Upon completion of the installation, the door must reverse when it comes in contact with a  
one-inch high object or a 2x4 laid flat on the floor.  
9. Do not wear watches, rings or loose clothing while installing or servicing an opener. Jewelry or  
loose clothing can be caught in the mechanism of the garage door or the opener.  
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 professional  
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 4 feet to the  
left or right of the door center only if  
a torsion spring or center bearing  
plate is in the way; or you can attach  
it to the ceiling (refer to page 10)  
when clearance is minimal. (It may  
be mounted on the wall upside down  
if necessary, to gain approximately  
1/2".)  
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.  
Ceiling  
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  
Header  
Wall  
2"  
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  
inside vertical centerline of  
your garage door. Extend the  
Structural  
Supports  
line onto the header wall  
above door.  
If headroom clearance is  
minimal, you can install the  
2x4  
Vertical  
header bracket on the ceiling.  
Centerline of  
See page 10.  
Garage Door  
OPTIONAL CEILING MOUNT  
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  
of Travel  
Header  
Wall  
Highest Point  
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"-9x1-5/8"  
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  
Garage  
Door  
Hardware Shown Actual Size  
Highest  
Point of Travel  
(of Garage Door)  
Vertical  
Center  
Line  
Lag Screw  
5/16"-9x1-5/8"  
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  
Header  
Bracket  
• Mark holes designated for ceiling mount only. Drill  
3/16" pilot holes and fasten bracket securely to a  
structural support with the hardware provided.  
U P  
6" Maximum  
Door  
Spring  
Lag Screws  
5/16"-9x1-5/8"  
Ceiling Mounting Holes  
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.  
10  
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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  
Header  
Bracket  
If the door spring is in the way you'll need help.  
Have someone hold the opener securely on a  
temporary support to allow the T-rail to clear the  
spring.  
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"x2-3/4"  
Ring Fastener  
11  
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Installation Step 4  
Position the Opener  
CAUTION  
To prevent damage to steel, aluminum,  
fiberglass or glass panel doors, do not rest the  
opener on the door without using a 2x4.  
Follow instructions which apply to your door type  
as illustrated.  
SECTIONAL Door & ONE-PIECE Door with Track  
A 2x4 laid flat is convenient for setting an ideal  
door-to-T-rail distance.  
• Raise the opener onto a stepladder.  
2x4  
Laid Flat  
T-rail  
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 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,  
Top of Opener  
measure the distance from the floor to the top of  
the door.  
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.  
Lag Screws  
5/16"-18x1-7/8"  
• Cut both pieces of the hanging bracket to required  
lengths.  
Measure  
Distance  
Drill 3/16" pilot holes in the structural supports.  
• Attach one end of each bracket to a support with  
5/16"-18x1-7/8" lag screws.  
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" hex screws, lock washers and nuts.  
• Check to make sure the T-rail is centered over the  
door (or in line with the header bracket if the  
bracket is not centered above the door).  
• Remove the 2x4. Operate the door manually. If the  
door hits the rail, raise the header bracket.  
Figure 2  
— FINISHED CEILING —  
Bracket  
(Not Supplied)  
Hidden  
Support  
Grease the top and underside  
of the rail surface where  
the trolley slides with  
rail grease.  
Lag Screws  
5/16"-18x1-7/8"  
(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  
Hardware Shown Actual Size  
Lag Screw  
5/16"-18x1-7/8"  
Hex Screw  
5/16"-18x7/8"  
Lock Washer 5/16"  
Nut 5/16"-18  
13  
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Installation Step 6  
Install the Door Control Panel  
WARNING  
DO NOT CONNECT TO LIVE ELECTRICAL WIRING.  
CONNECT ONLY TO 24 VOLT LOW VOLTAGE  
WIRES. CONNECTION TO LIVE WIRES OR HIGHER  
VOLTAGE MAY CAUSE SERIOUS INJURY FROM  
SHOCK, BURN OR ELECTROCUTION.  
Children operating or playing with a garage door  
opener can injure themselves or others. The garage  
door could close and cause serious injury or death.  
Do not allow children to operate the push button(s)  
or the remote control transmitter(s).  
Locate the door control within sight of the door at a  
minimum height of 5 feet where small children cannot  
reach, and away from all moving parts of the door and  
door hardware.  
The door control is typically attached directly to the wall.  
If installing into drywall, drill 5/32" holes and use the  
anchors provided. For pre-wired installations (as in new  
home construction) it can be mounted to a standard single  
gang box. See illustrations.  
1. Strip 1/4" of insulation from one end of the bell wire.  
Connect the wire to the two screw terminals on back of  
door control: white wire to 2 and white/red wire to 1.  
2. Remove the push bar cover by gently prying off the top  
edge with a coin or screwdriver. Fasten with 6ABx1-1/4"  
self-tapping screws (standard installation) or 6-32x1"  
machine screws (pre-wired installation) as follows:  
• Install bottom screw, allowing 1/8" to protrude from  
the wall.  
A moving garage door could injure someone under  
it. Activate the opener only when the door is  
properly adjusted, you can see it clearly, and there  
are no obstructions to door travel.  
Do NOT connect the power and operate the  
opener at this time. The trolley will travel to the  
full open position but will not return to the close  
position until the sensor beam is connected and  
properly aligned. See Safety Reversing Sensor  
Instructions beginning on page 17.  
• Position bottom of door control on screw head and  
adjust for snug fit.  
• Install top screw with care to avoid cracking plastic  
housing. Do not overtighten.  
3. (For standard wall mount only)  
Outside Keylock Accessory Connections  
To opener terminal screws: white to 2; white/red to 1  
Run the bell wire up wall and across ceiling to opener.  
Use insulated staples to secure the wire in several  
places. Be careful not to pierce the wire with a staple,  
creating a short.  
PRE-WIRED INSTALLATION  
24 Volt  
2-Conductor Bell Wire  
4. Connect the bell wire to the terminal screws on the  
opener panel: white to 2 and white/red to 1.  
5. After testing, replace the cover by inserting top tabs  
and snapping into place.  
To Replace  
Insert Top  
Tabs First  
NOTE: After installation, the green indicator light behind the  
push bar cover will indicate proper connection.  
The automatic light feature will become functional 1-1/2  
minutes after power is restored.  
LOCK  
ON  
OFF  
Detector  
Switch  
LIGHT  
Push Bar Cover  
6. Attach the User Safety Instruction label to the wall near  
the door control, and the Maintenance Instruction label  
in a prominent location on the inside of the garage  
door.  
STANDARD WALL MOUNT  
To Replace  
Insert Top  
Tabs First  
Page 28 explains how to use the door control.  
This device complies with Part 15 of the FCC Rules. Operation is subject to  
the following two conditions: (1) this device may not cause harmful  
interference, and (2) this device must accept any interference received,  
including interference that may cause undesired operation.  
Detector  
Switch  
ON  
LOCK  
LIGHT  
Push Bar Cover  
Push Bar  
OFF  
Opener  
Terminal Screws  
2-Conductor  
Bell Wire  
2-Conductor  
Hardware Shown  
Actual Size  
Bell Wire  
2
WHITE  
1
2
3
Door  
1
RED  
Control  
Terminal  
Screws  
Dry Wall Anchors  
Insulated  
Staples  
9
9
1
1
7
3
7
3
5
5
LOCK  
KG  
KG  
LIGHT  
Lock  
Button  
Screw 6-32x1" (pre-wired)  
Light Button  
6ABx1-1/4" Screw  
(std installation)  
RIGHT PANEL OF OPENER  
Antenna  
14  
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Installation Step 7  
Install the Lights and the Lenses  
Lens  
Guide  
• 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.  
75 Watt  
Maximum  
Light Bulb  
ens  
ab  
• If the bulbs burn out prematurely due to vibration,  
replace with a "Garage Door Opener" bulb.  
Watt  
ximum  
ht Bulb  
• Slide lenses into guides. Snap bottom tabs into  
lens slots.  
Lens Slot  
For convenience, the lenses may be installed  
after Adjustment Step 4 on page 26.  
Lens Tab  
• Reverse the procedure to remove the lenses.  
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  
Trolley  
Trolley  
Release Arm  
Rope  
• Thread one end of the rope through the hole in the  
top of the red handle so "NOTICE" reads right side  
up as shown. Secure with an overhand knot at least  
1" from the end of the rope to prevent slipping.  
NOTICE  
Manual  
Release Handle  
Overhand  
Knot  
• 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.  
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.  
Do NOT use an extension cord, 2-wire adapter,  
or change the plug in any way to make it fit  
your outlet.  
If the plug doesn't fit into the outlet you have,  
contact a qualified electrician to install the proper  
outlet.  
To avoid installation difficulties, do not run the  
opener at this time.  
Right  
Wrong  
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.  
Permanent wiring  
connection  
• 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.  
Ground Tab  
• Remove the attached 3-prong cord.  
Green  
Ground  
Screw  
• 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.  
Black  
Wire  
Ground Wire  
• Reinstall the cover.  
To avoid installation difficulties, do not run the  
opener at this time.  
White Wire  
Black  
Wire  
16  
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The Protector® System  
IMPORTANT INFORMATION ABOUT THE SAFETY  
REVERSING SENSOR  
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.  
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.  
To protect small children, install the safety  
reversing sensor so that the beam will be no  
higher than 4"-6" above the garage floor.  
When properly connected and aligned, the safety  
reversing sensor will detect an obstacle in the path of  
its electronic beam. The sending eye (with an orange  
indicator light) transmits an invisible light beam to the  
receiving eye (with a green indicator light). If an  
obstruction breaks the light beam while the door is  
closing, the door will stop and reverse to full open  
position, and the door control will flash for 5 seconds.  
Disconnect power to the garage door opener  
before installing the safety reversing sensor.  
If it is necessary to mount the units on the wall, the  
brackets must be securely fastened to a solid surface  
such as the wall framing. Extension brackets (see  
accessories) are available if needed. If installing in  
masonry construction, add a piece of wood at each  
location to avoid drilling extra holes in masonry if  
repositioning is necessary.  
The units must be installed inside the garage so that  
the sending and receiving eyes face each other  
across the door, between 4 – 6" above the floor.  
Either can be installed on the left or right of the door  
as long as the sun never shines directly into the  
receiving eye lens.  
The invisible light beam path must be unobstructed.  
No part of the garage door (or door tracks, springs,  
hinges, rollers or other hardware) may interrupt the  
beam while the door is closing.  
The mounting brackets are designed to clip onto the  
track of sectional garage doors without additional  
hardware.  
Sensor Beam  
4-6" max.  
Sensor Beam  
4-6" max.  
above floor  
above floor  
Invisible Light Beam  
Protection Area  
: Facing the door from inside the garage  
Figure 1  
17  
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Figure 2  
DOOR TRACK MOUNT (Right Side)  
Installation Step 10  
Install the Safety Reversing Sensor  
Door  
Track  
INSTALLING THE BRACKETS  
Lip  
Be sure power to the opener is disconnected.  
Install and align the brackets so the sensors will face  
each other across the garage door, with the beam  
from 4 – 6" above the floor.  
Indicator  
light  
Sensor  
Bracket  
They may be installed in one of three ways, as  
follows.  
Lens  
Garage door track installation (preferred):  
• Slip the curved arms over the rounded edge of each  
door track, with the curved arms facing the door.  
Snap into place against the side of the track. It  
should lie flush, with the lip hugging the back edge  
of the track, as shown in Figure 2.  
Figure 3  
WALL MOUNT (Right Side)  
Optional  
Extension  
Bracket  
Inside  
Garage  
Wall  
If your door track will not support the bracket  
securely, wall installation is recommended.  
(See Accessories)  
(Provided with  
Extension  
Bracket)  
Wall installation:  
• Place the bracket against the wall with curved arms  
facing the door. Be sure there is enough clearance  
for the sensor beam to be unobstructed.  
• If additional depth is needed, an extension bracket  
(see Accessories) or wood blocks can be used.  
• Use bracket mounting holes as a template to locate  
and drill (2) 3/16" diameter pilot holes on the wall at  
each side of the door, from 4–6" above the floor.  
Sensor  
Bracket  
Indicator  
light  
(Provided with  
Extension Bracket)  
Lens  
• Attach brackets to wall with lag screws (not  
provided).  
Figure 4  
FLOOR MOUNT (Right Side)  
• If using extension brackets or wood blocks, adjust  
right and left assemblies to the same distance out  
from the mounting surface. Make sure all door  
hardware obstructions are cleared.  
Lens  
Sensor  
Bracket  
Indicator  
light  
(Provided with  
Extension Bracket)  
Floor installation:  
• Use wood blocks or extension brackets (see  
Accessories) to elevate sensor brackets so the  
lenses will be 4-6" above the floor.  
Attach with  
concrete anchors  
(not provided)  
• Carefully measure and place right and left  
assemblies at the same distance out from the wall.  
Be sure all door hardware obstructions are cleared.  
(Provided with  
Extension  
Bracket)  
Optional  
Extension  
Bracket  
Inside  
Garage  
Wall  
• Fasten to the floor with concrete anchors as shown.  
(See Accessories)  
Hardware Shown Actual Size  
Carriage Bolt  
1/4"-20x1/2" (2)  
Insulated Staples (20)  
Wing Nut (2)  
18  
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MOUNTING AND WIRING THE SAFETY SENSORS  
Figure 5  
• Slide a 1/4"-20x1/2" carriage bolt head into the slot  
on each sensor. Use wing nuts to fasten sensors to  
brackets, with lenses pointing toward each other  
across the door. Be sure the lens is not obstructed  
by a bracket extension. See Figure 5.  
Wing nut  
1/4"-20x1/2"  
Carriage bolt  
• Finger tighten the wing nuts.  
Lens  
Run the wires from both sensors to the opener. Use  
insulated staples to secure wire to wall and ceiling.  
TROUBLESHOOTING THE SAFETY SENSORS  
• 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.  
1. If the sending eye indicator light does not glow  
steadily after installation, check for:  
• Electric power to the opener.  
• A short in the white or white/black wires. These  
can occur at staples, or at screw terminal  
connections.  
ALIGNING THE SAFETY SENSORS  
Plug in the opener. The indicator lights in both the  
sending and receiving eyes will glow steadily if  
wiring connections and alignment are correct.  
• Incorrect wiring between sensors and opener.  
• A broken wire.  
The sending eye orange indicator light will glow  
regardless of alignment or obstruction. If the green  
indicator light in the receiving eye is off, dim, or  
flickering (and the invisible light beam path is not  
obstructed), alignment is required.  
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.  
• Loosen the sending eye wing nut and readjust,  
aiming directly at the receiving eye. Lock in place.  
3. If the receiving eye indicator light is dim, realign  
either sensor.  
• Loosen the receiving eye wing nut and adjust  
sensor until it receives the sender’s beam. When  
the green indicator light glows steadily, tighten the  
wing nut.  
NOTE: When the invisible beam path is obstructed or  
misaligned while the door is closing, the door will  
reverse. If the door is already open, it will not close.  
The door control will blink 10 times. See page 17.  
Figure 6 Wiring the Safety Sensors  
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  
WARNING  
Fasten Door Bracket  
To prevent damage to steel, aluminum,  
fiberglass or glass panel doors, always  
reinforce the inside of the door both vertically  
and horizontally with angle iron.  
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  
Vertical  
Guideline  
Door  
Bracket  
Location  
UP  
Carriage Bolt  
5/16"-18x2-1/2"  
Vertical  
Guideline  
Door  
Bracket  
Lock  
Washer  
5/16"  
Nut  
5/16"-18  
Figure 2  
Inside Edge  
of Door or  
Reinforcement Board  
UP  
• Center the door bracket on the previously marked  
vertical guideline used for the header bracket  
installation. Note the correct UP placement as  
Door Bracket  
stamped inside the bracket.  
• Position the bracket on the face of the door within  
the following limits:  
Hardware Shown Actual Size  
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.  
Nut 5/16"-18  
Lock Washer 5/16"  
• Mark and drill 5/16" left and right fastening holes.  
Secure the bracket as shown in Figure 1 if there is  
vertical reinforcement.  
If your installation doesn't require vertical reinforce-  
ment but does need top and bottom fastening holes  
for the door bracket, fasten as shown in Figure 2.  
Carriage Bolt  
5/16"-18x2-1/2"  
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  
2x4 Support  
— Finished Ceiling —  
Header  
Bracket  
Horizontal and vertical reinforcement is  
Door  
needed for lightweight garage doors  
Bracket  
(fiberglass, aluminum, steel, door with  
glass panel, etc.). (Not Provided)  
Vertical  
Centerline of  
Garage Door  
Inside Edge  
of Door or  
Reinforcement Board  
Door  
Bracket  
• Center the bracket on the inside face of the door,  
in line with the header bracket as shown. Mark  
Hardware Shown Actual Size  
either the left and right, or the top and bottom  
holes.  
• Drill 5/16" pilot holes and fasten the door bracket  
with hardware supplied.  
Nut 5/16"-18  
Lock Washer 5/16"  
Carriage Bolt  
5/16"-18x2-1/2"  
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 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 1:  
Figure 2:  
Fasten straight door arm section to outer trolley  
with the 5/16"x1" 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, using the 5/16"x1-1/4" clevis pin.  
Inner Trolley  
Outer Trolley  
Lock  
Washers  
5/16"  
Rope  
Clevis Pin  
5/16"x1"  
Ring Fastener  
Nuts  
5/16"-18  
Manual  
Release  
Handle  
Straight  
Door  
Door Arm  
Bracket  
Screws  
5/16"-18x7/8"  
Door  
Bracket  
Figure 1  
Figure 2  
Curved  
Door Arm  
Clevis Pin  
5/16"x1-1/4"  
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.  
Lock  
Washers  
5/16"  
• Bring arm sections together.  
• Find two pairs of holes that line up and join with  
screws, lock washers and nuts.  
Nuts  
5/16"-18  
Hardware Shown Actual Size  
Screws  
5/16"-18x7/8"  
Cut This End  
Nut 5/16"-18  
Lock Washer 5/16" Ring Fastener  
Figure 3  
Clevis Pin  
5/16"x1-1/4" (Door Bracket)  
Hex Screw  
5/16"-18x7/8"  
Clevis Pin  
5/16"x1" (Trolley)  
Proceed to Adjustment Step 1, page 24. Trolley will re-engage automatically when the opener is operated.  
22  
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All ONE-PIECE Doors  
Assemble the Door Arm:  
Door  
Bracket  
Fasten the straight and curved door arm sections  
together to the longest possible length (with a 2 or 3  
hole overlap).  
Ring  
Fastener  
Lock  
Washers  
5/16"  
Nuts  
5/16"-18  
• With the door closed, connect the straight door arm  
section to the door bracket with the 5/16"x1-1/4"  
clevis pin.  
Straight  
Door Arm  
5/16"x1-1/4"  
Clevis Pin  
• Secure with a ring fastener.  
Screws  
5/16"-18x7/8"  
Curved Door Arm  
On one-piece doors, before connecting the door arm to the trolley the travel limits must be adjusted. Limit  
adjustment 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  
Door Arm  
Door Arm  
Connector Hole  
Connector Hole  
Door Arm  
Closed  
Door  
Door with  
Backward Slant  
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  
properly 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.  
2-4"  
Cover  
Protection  
Bolt  
• 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).  
Left Side  
Panel  
Limit  
Adjustment  
Screws  
Adjustment procedures are outlined below. Run  
the opener through a complete travel cycle after  
each adjustment.  
Adjustment Label  
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 continuing on  
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 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 and 9.  
Increase up travel. Turn the UP limit adjustment  
screw clockwise. One turn equals 2" of travel.  
NOTE: To prevent the trolley from hitting the  
cover protection bolt, keep a minimum distance  
of 2-4" between the trolley and the bolt.  
• 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 door does not open at least 5 feet:  
Adjust the UP (open) force as explained in  
Adjustment Step 2.  
• If the door reverses when closing and there is  
no visible interference to travel cycle:  
If the opener lights are flashing, the Safety Reversing  
Sensors are either not installed, misaligned, or  
obstructed. See Troubleshooting, page 19.  
• 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 the door still won't close completely and the trolley  
bumps into the pulley bracket (see page 4), try  
lengthening the door arm (see page 22).  
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  
side 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  
9
9
1
1
7
7
3
3
5
5
KG  
KG  
Right Side Panel  
of Opener  
Adjustment Label  
How and When to Adjust the Forces  
Test the DOWN (close) force  
If the door doesn't open at least 5 feet  
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.  
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  
Make 10 degree turn adjustments until the door  
reverses normally. After each adjustment, run the  
opener through a complete cycle.  
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.  
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.  
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.  
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 push bar until down travel  
is completed.  
Détecteur inverseur de sécurité  
Détecteur inverseur de sécurité  
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 to  
perons trapped by a closing garage door.  
Repeat this test once a month and adjust as  
needed.  
Test:  
• With the door fully open, place 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 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.  
2x4 laid flat  
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.  
• 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  
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 PROPERLY 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.  
Care of Your Opener  
The remote control transmitter:  
Limit and force adjustment controls  
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 radio controls 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
7
7
3
3
5
5
KG  
KG  
Adjustment Label  
(Located on the left side panel)  
Adjustment Label  
(Located on the right side panel)  
The remote control battery:  
The lithium battery should produce  
power for up to 5 years. To replace  
the battery, pry open case with visor  
clip or screwdriver, as shown. Insert  
battery positive side up.  
Weather conditions may cause some minor  
changes in door operation requiring some re-  
adjustments, particularly during the first year of  
operation.  
Dispose of your old battery properly.  
Pages 24 and 25 refer to the limit and force  
adjustments. Only a screwdriver is required. Follow  
the instructions carefully.  
WARNING  
Repeat the safety reverse test (page 26) after any  
adjustment of limits or force.  
Keep batteries away from small children. If  
swallowed, promptly notify doctor.  
Maintenance Schedule  
Once a Month  
Repeat the safety reverse test. Make any  
necessary adjustments. (See page 26.)  
Manually operate door. If it is unbalanced or  
binding, call for professional garage door service.  
Once a Year  
Check to be sure door opens & closes fully.  
Adjust limits and/or force if necessary. (See pages  
24 and 25.)  
Oil door rollers, bearings and hinges. The opener  
does not require additional lubrication. Do not  
grease the door tracks.  
27  
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Operation of Your Opener  
Activate the opener with any of the following:  
The Remote Control Transmitter. Hold push button  
down until the door starts to move.  
WARNING  
The Door Control. Hold push bar 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 Outside Keylock or Keyless Entry.  
(See Accessories)  
When the opener is activated:  
1. If open, the door will close. If closed, it will open.  
2. If closing, the door will reverse.  
One blink indicates that the timer is reset to 1-1/2 minutes.  
Repeat the procedure and the light will blink twice,  
resetting the timer to 2-1/2 minutes. Repeat again for a  
3-1/2 minute interval, etc., up to a maximum of four blinks  
and 4-1/2 minutes.  
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.  
Automatic Light Feature: The opener light will turn on  
automatically when a person enters the garage. When a  
person walks in front of the door control, the light will come  
on for five minutes, then shut off. This feature works by  
detecting body heat and may not work in temperatures  
around 100˚F.  
To disable this feature, slide the Detector Switch on the  
right side of the door control down (off).  
We recommend that you disable the motion sensor when  
using the opener lights as working lights. Otherwise, they  
will turn off automatically if you are working beyond the  
sensor’s range.  
5. If obstructed while closing, the door will reverse. If the  
obstruction interrupts the sensor beam, the opener lights  
will blink for 5 seconds.  
6. If obstructed while opening, the door will stop.  
7. 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 correctly installed and aligned, 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.  
Energy Saving Feature: This door control senses the  
brightness inside the garage, and will not turn the light on if  
it is already bright enough. If the light sensor turns on the  
light when it is not needed or does not turn it on when it is  
dark, the sensitivity can be adjusted. Remove the push bar  
cover by gently prying off the top edge with a coin or  
screwdriver. Underneath there is a dial below the red light  
on the right side. Use a small screwdriver to turn the dial  
toward “L” (counterclockwise) to make the light come on, or  
toward “H” (clockwise) to make the light go off. Replace the  
cover by inserting top tabs and snapping into place.  
Lock Feature: Designed to prevent operation of the door  
from portable remote controls. However, the door will open  
and close from the Door Control push bar and from the  
Outside Keylock and the Keyless Entry accessories.  
To activate: Press and hold the Lock button for 2 seconds.  
The push button indicator light will flash as long as the lock  
is on.  
The Opener Lights will turn on under the following  
conditions: When the opener is initially plugged in; when  
the power is restored after interruption; when the opener  
is activated. It 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.  
OPERATION OF THE MOTION DETECTING  
DOOR CONTROL PANEL  
This door control contains a motion detector that will  
automatically turn on the light when it detects a person  
entering the garage. This feature can be easily turned off  
for extended work light use.  
Door Control Push Bar: Press to open or close the door.  
Press again to reverse the door during the closing cycle,  
or to stop the door while it is opening.  
Light Feature: Press the Light button to switch the opener  
light on or off. When the door is opened or closed, the light  
will remain on for 4-1/2 minutes. Press the Light button to  
turn it off sooner. The Light button will not control the opener  
light when the door is in motion. When using the opener  
lights as working lights, we recommend that you first disable  
the motion sensor. See Automatic Light Feature, following.  
To turn off: Press and hold the Lock button again for  
2 seconds. The indicator light will stop flashing. Normal  
operation will resume. The Lock feature will also turn off  
whenever the Smart button on the opener end panel is  
activated.  
The 4-1/2 minute interval can be changed to 1-1/2, 2-1/2, or  
3-1/2 minutes as follows: Press and hold the Lock button  
until the light blinks (about 10 seconds).  
TO OPEN THE DOOR MANUALLY  
To open the door  
manually: The door  
should be fully closed if  
possible. Pull down on the  
manual release handle  
and lift the door manually.  
To reconnect the door to  
the opener, press the  
Door Control push bar.  
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 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  
Release Arm  
Trolley  
Release Arm  
Trolley  
Manual  
Release Handle  
(Pull Down & Back  
Towards Opener)  
Trolley  
Manual  
Release  
Handle  
NOTICE  
NOTICE  
(Pull Down)  
Manual disconnect position  
Lockout position  
28  
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Receiver and Remote Control Programming  
NOTICE: To comply with FCC/IC rules, adjustment or modifications of this  
receiver and/or transmitter are prohibited, except for changing the code  
setting or replacing the 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 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.  
SECURITY✚  
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 LARGE  
remote control push button.  
Your SECURITYopener will operate with:  
• several SECURITYremote controls utilizing up to 8  
functions. NOTE: Open/Close/Stop operation counts  
as 1 function.  
Model 973LM  
SECURITY3-Channel Remote Control  
• one Keyless Entry System (with SECURITYlogo)  
Follow the instructions below to program your opener to  
match any additional remotes you may purchase. See  
Accessories on page 34.  
Select a  
push button  
To Add A Remote Control  
Figure 1  
1. Press and hold the selected remote control push  
button. See Figure 1.  
SECURITY✚  
Garage Door Opener  
2. Press and release the “Smart” (learn) button on the  
right side of the opener (see Figure 2). The indicator  
light on the panel will begin to blink and the opener  
lights will flash once.  
1
2
3
Figure 2  
9
9
1
1
3. Release the remote push button.  
7
7
3
3
5
5
KG  
KG  
Now the opener will operate when that remote control  
button is pressed. Test it by pressing the remote button  
to see that the door goes up and down.  
"Smart" (learn)  
Button  
Indicator Light  
RIGHT PANEL  
1
2
3
Adding a remote can also be done from the door  
control, as follows:  
9
1
9
1
7
3
7
3
5
5
KG  
KG  
Code programming instructions  
are also located  
1. With the door closed, press and hold a remote push  
button.  
on the opener panel.  
2. Press and hold the Light button on the door control.  
3. Press and hold the door control push bar.  
4. After the opener lights flash, release all buttons.  
Test by pressing the remote push button.  
Open/Close/Stop Operation  
Your SECURITYremote control can be programmed  
to operate one door using all 3 buttons: the large button  
will only open the door, the middle button will only close  
the door, and the third button will stop the door’s  
movement. You may set up this feature as follows:  
To Erase All Remote Control Codes  
Press and hold the “Smart” button on the opener panel  
until the indicator light turns off (about 6 seconds). All  
transmitter codes are now erased. Then follow the steps  
above to re-program each remote control.  
1. With the door closed, press and hold the  
large remote push button.  
2. Press and hold the Lock button  
on the door control.  
Open  
Close  
To Control the Opener Lights  
3. Press and hold the door control  
Stop  
With SECURITYtransmitters, a remote push button  
can be programmed to operate the opener lights without  
opening the door.  
push bar.  
When the opener lights flash, release all buttons. Test  
by pressing the large (Open) button on the remote. The  
door should open. Press it again while the door is open  
and nothing should happen. Press the middle (Close)  
button and the door should close. Press the third (Stop)  
button while the door is moving and it should stop  
immediately.  
1. With the door closed, press and hold the remote  
button that you want to control the light.  
2. Press and hold the Light button on the door control.  
3. Press and hold the Lock button on the door control.  
4. After the opener lights flash, release all buttons.  
Model 976LMC SECURITYKeyless Entry  
Follow instructions on page 34 (Accessories).  
Test by pressing the remote push button. The opener  
lights should turn on or off but the door should not move.  
29  
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Having a Problem?  
Situation  
Probable Cause & Solution  
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.  
The opener doesn't  
operate from either  
the Door Control or  
the remote control:  
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  
the remote, but not  
from Door Control:  
1. Is the door control lit? If not, remove the bell wire from the opener terminals. 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 remote control:  
1. Is the door push bar flashing? If your model has the Lock feature, turn it off.  
2. Your opener needs to re-learn a remote control code. Refer to instructions on the  
opener panel.  
3. Program the receiver to match the remote control code.  
4. Repeat the receiver programming procedure with all remote controls.  
The remote control  
has short range:  
1. Change the location of the remote control in your car.  
2. Check to be sure the antenna on the side or back panel of opener extends  
fully downward.  
3. 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 are off.  
2. Remove the bell wire from the door control terminals and operate from the remote  
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.  
3. Clear memory and reprogram all remote controls.  
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 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.  
Check the safety reversing sensor. Remove any obstruction or align the receiving eye.  
See page 19.  
The door reverses for  
no apparent reason  
and opener lights  
blink for 5 seconds  
after reversing:  
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 door may be out of balance or the springs are broken. Close the door and use the  
manual release 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 a professional garage door  
serviceman. Do not increase the force to operate the opener.  
The opener strains or  
maximum force is  
needed to operate  
door:  
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 to disconnect the trolley. The door can be opened and  
closed manually. When the 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  
5
3
1
6
7
2
KEY  
NO.  
PART  
NO.  
4
DESCRIPTION  
1
2
3
4
5
6
7
1A995  
Master link kit  
41A3588-1  
41B3869-1  
183B99  
Belt pulley bracket  
Complete trolley assembly  
One-piece T-rail  
41A3589-12  
41B4103  
109B33  
Full belt assembly  
Tensioner assembly  
Trolley clip  
Installation Parts  
6
4
2
5
3
LOCK  
1
LIGHT  
NOTICE  
KEY PART  
8
NO.  
NO.  
DESCRIPTION  
1
2
41C0472-3  
41A5056-3  
Motion detecting door control panel  
3-channel remote control housing  
(no circuit board)  
CEILING MOUNT ONLY  
UP  
7
3
4
5
6
7
8
9
10A20  
29B137  
3V2032 Lithium battery  
Transmitter visor clip  
10  
41A2828  
217A238  
41A5047-1  
41A4353-1  
41A5034  
Manual release rope & handle assy.  
2-conductor bell wire, white & white/red  
Door bracket w/clevis pin & fastener  
Header bracket w/clevis pin & fastener  
Safety sensor kit  
9
(receiving and sending eyes)  
with 3' 2-conductor bell wire attached  
Straight door arm section  
Curved door arm section  
Safety sensor brackets (2)  
NOT SHOWN  
11  
10  
11  
12  
178B34  
178B35  
41A5266-1  
12  
41A2770-5  
114A2478  
Installation hardware bag  
(includes hardware listed on page 5).  
Owner's manual  
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  
KEY  
NO.  
PART  
NO.  
NO.  
NO.  
DESCRIPTION  
DESCRIPTION  
1
2
41A4371  
Belt cap retainer  
10  
11  
12  
13  
30B363  
12A373  
41D3150  
41C4842  
Capacitor - 1/2HP  
Capacitor bracket  
41A4885-2  
Gear and sprocket assembly  
Complete with:  
Spring washer  
Thrust washer  
Retaining ring  
Bearing plate  
Roll pins (2)  
Drive gear and worm gear  
Terminal block w/screws  
Universal replacement motor &  
bracket assembly  
Complete with: Motor, worm,  
bracket, bearing assembly, RPM  
sensor  
Helical gear w/retainer and grease  
14  
15  
16  
17  
18  
19  
20  
41A3583-7  
41A2818  
Cover  
3
41A2817  
Drive/worm gear kit w/grease  
Roll pins (2)  
Helical gear & retainer w/grease  
Limit switch assembly  
RPM sensor assembly  
Shaft bearing kit  
41D3452  
41C4398A  
41A2826-1  
41A2822A  
41A4889  
4
5
6
41B4245  
41C4876  
Line cord  
Wire harness assembly with plug  
41A5021-5E Receiver logic board assembly  
Complete with: Logic board,  
End panel w/all labels  
Interrupter cup assembly  
End panel  
NOT SHOWN  
7
8
9
41A4888  
4A1344  
108D34  
End panel w/all labels  
Light socket  
Lens  
41A2825  
Opener assembly hardware kit  
(includes screws not designated  
by a number in illustration).  
33  
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Accessories Available For Your Opener  
Model 1702LMC Outside Quick Release:  
Model 59LMC  
Outside Keylock:  
Required for a garage with NO  
access door.  
Opens the garage door  
automatically from outside when  
remote control is not handy.  
Model 1778LMC  
Model 1770LMC  
8 foot Complete Rail:  
Model 973LMC SECURITY3-Channel  
Remote Control:  
To allow an 8 foot door to  
open fully.  
Includes visor clip.  
SECURITY4-Channel  
Remote Control:  
Model 974LMC  
Model 970LMC  
Model 98LMC  
10 foot Complete Rail:  
To allow a 10 foot door to  
open fully.  
Includes visor clip.  
SECURITY3-Channel Mini  
Remote Control:  
Model 97LMC  
Model 976LMC  
Extension Brakcets:  
(Optional) For safety sensor  
installation onto the wall or floor.  
With key ring and Velco fastening  
strip.  
Motion Detecting Door Control  
Panel:  
SECURITYKeyless Entry:  
Enables homeowner to operate  
garage door opener from outside by  
entering code on specially designed  
keyboard. Also can add a temporary  
pass code for visitors or service  
persons. This temporary code can be  
limited to a programmable number of  
hours or entries.  
Multi-function door control with  
motion sensor that automatically  
turns opener lights on for 5 minutes  
when it detects a person entering  
the garage. Sensor can be easily  
deactivated when desired.  
LOCK  
LIGHT  
To Add the Keyless Entry  
We recommend that you program your code  
before you install the Keyless Entry. You will not  
need assistance, and you can test the reception at  
the mounting location before installation.  
You may also program the Keyless Entry from the  
Multi-Function Door control, as follows:  
1. With the door closed, enter the four digit code  
desired, then press and hold Enter.  
1. Choose a 4-digit code using numbers from 0 to 9  
(a number can be used more than once, for  
example, 4, 0, 4, 1).  
2. Press and hold the light button on the door control.  
3. Press and hold the door control push bar.  
4. After the opener lights flash, release all buttons.  
2. Press the four buttons for the code, then press and  
hold the Enter button. The indicator light on the  
door opener panel will blink.  
3. Press and release the “Smart” (learn) button on  
the opener panel. After the opener lights flash,  
release the Enter button.  
Test by pressing the the code, then press Enter. The  
door should begin to move.  
34  
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Index  
Access Door/Outside Quick Release Accessory..........................................................................................4, 34  
Electrical Safety Warnings....................................................................................................................2, 7, 16, 27  
Garage Door  
Testing for balance, binding and sticking...................................................................................................3, 25, 27  
Determining high point of travel:  
Sectional Door ....................................................................................................................................................8  
One-Piece Door..............................................................................................................................................8, 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, 12, 14, 27, 28  
Maintenance Instruction Label.........................................................................................................................7, 14  
Reinforcement requirements .....................................................................................................................4, 20, 21  
Removing of all ropes........................................................................................................................................3, 7  
Possible door damage...........................................................................................................................3, 4, 12, 20  
Travel Limits  
Adjustment Procedures ....................................................................................................................................24  
Problems that might require Limit adjustments...........................................................................................30, 31  
Safety Warnings ...................................................................................................................................15, 27, 28  
Manual Release Rope & Handle  
Lockout Feature..................................................................................................................................................28  
Manual Disconnect .......................................................................................................................................28, 31  
Safety Warnings ...........................................................................................................................................24, 27  
Opener Terminals  
Door Control Connections ..................................................................................................................................14  
Safety Reversing Sensor Connections...............................................................................................................19  
Outside Keylock Accessory Connections ...........................................................................................................14  
Protector System®..........................................................................................................................................17, 26  
Receiver and Remote Controls  
Programming the receiver ..................................................................................................................................29  
Erasing all codes ................................................................................................................................................29  
Safety warning....................................................................................................................................................29  
Problems with 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, 26  
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  
Vibration Noise (isolator kit)...............................................................................................................................30  
35  
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LIFT-MASTER SERVICE  
IS ON CALL  
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.  
OUR LARGE SERVICE ORGANIZATION  
SPANS AMERICA AND CANADA  
WHEN ORDERING REPAIR PARTS, ALWAYS GIVE  
THE FOLLOWING INFORMATION:  
INSTALLATION AND SERVICE INFORMATION IS AS  
NEAR AS YOUR TELEPHONE SIX DAYS A WEEK.  
SIMPLY DIAL OUR TOLL FREE NUMBER:  
• PART NUMBER  
• PART NAME  
• MODEL NUMBER  
1-800-654-4736  
HOURS: (Central Std. Time)  
6:00 A.M. TO 7:00 P.M. - Monday through Friday  
8:00 A.M. TO 6:00 P.M. - Saturday  
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:  
1-800-654-4736  
LIFT-MASTER GARAGE DOOR OPENER FIVE-YEAR LIMITED WARRANTY  
The Chamberlain Group, Inc. (“Seller”) warrants to the first retail purchaser of this product, for the residence in which this product is  
originally installed, that it will be free from any defect in materials and/or workmanship for a period of five years from the date of purchase.  
Additionally, the motor and belt are warranted for the lifetime of the product. The product must be used in complete accordance with  
Chamberlain’s instructions for installation, operation and care. 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 (1-800-654-4736). 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, REPLACEMENT  
OF BATTERIES AND LIGHT BULBS, OR UNITS INSTALLED FOR NON-RESIDENTIAL USE.  
THIS LIMITED WARRANTY DOES NOT COVER ANY PROBLEMS WITH, OR RELATING TO, THE GARAGE DOOR OR GARAGE  
DOOR HARDWARE, INCLUDING BUT NOT LIMITED TO THE DOOR SPRINGS, DOOR ROLLERS, DOOR ALIGNMENT AND  
HINGES. ANY SERVICE CALL THAT DETERMINES THE PROBLEM HAS BEEN CAUSED BY ANY OF THESE ITEMS COULD  
RESULT IN A FEE TO YOU.  
UNDER NO CIRCUMSTANCES SHALL SELLER BE LIABLE FOR CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES  
ARISING IN CONNECTION WITH THE USE OF, 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 provinces 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 province to  
province.  
© 2000, The Chamberlain Group, Inc.  
114A2478  
All Rights Reserved  
Printed in Mexico  
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