TM
The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illinois 60126-1196
Complies with UL 325 |
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Regulations effective |
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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.
Contents |
Page |
A review of safety alert symbols ............................. |
2 |
Safety information regarding garage door locks |
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and ropes.............................................................. |
3 |
Testing your garage door for sticking, binding |
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and balance .......................................................... |
3 |
Illustration of sectional door installation ................. |
4 |
Illustration of one-piece door installation ............... |
4 |
Carton inventory ..................................................... |
5 |
Assembly section - pages 6 – 7 |
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Fasten T-rail to opener ......................................... |
6 |
Tighten the belt..................................................... |
6 |
Attach belt cap retainer......................................... |
7 |
Installation safety instructions............................... |
7 |
Installation section - pages 8 – 23 |
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Determine header bracket location |
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Sectional door..................................................... |
8 |
One-piece door................................................... |
9 |
Install the header bracket ................................... |
10 |
Attach the T-rail to header bracket ..................... |
11 |
Position the opener............................................. |
12 |
Hang the opener................................................. |
13 |
Install the multi-function door control panel ........ |
14 |
Install the lights and lenses ................................ |
15 |
Attach manual release rope and handle............. |
15 |
Electrical requirements ....................................... |
16 |
Contents |
Page |
The Protector® System |
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safety reversing sensor information................. |
17 |
Install the safety reversing sensor ................. |
18,19 |
Fasten door bracket (sectional door).................. |
20 |
Fasten door bracket (one-piece door) ................ |
21 |
Connect door arm to trolley (sectional door) ...... |
22 |
Connect door arm to trolley (one-piece door).....23 |
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Adjustment section - pages 24 – 26 |
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Travel limit adjustments...................................... |
24 |
Force adjustments .............................................. |
25 |
Test The Protector® System .............................. |
26 |
Test the safety reverse system .......................... |
26 |
Operation safety instructions ................................ |
27 |
Care of your opener.............................................. |
27 |
Maintenance schedule.......................................... |
27 |
Operation of your opener...................................... |
28 |
Receiver & remote control programming.............. |
29 |
Having a problem? ......................................... |
30, 31 |
Repair parts, rail assembly ................................... |
32 |
Repair parts, installation ....................................... |
32 |
Repair parts, opener assembly............................. |
33 |
Accessories .......................................................... |
34 |
Index..................................................................... |
35 |
How to order repair parts...................................... |
36 |
Warranty ............................................................... |
36 |
Start by reviewing these important safety alert symbols
When you see these safety symbols on the following pages, they will alert you to the possibility of serious injury or death if you do not comply with the corresponding instructions. The hazard may come from something mechanical or from electric shock. Read the instructions carefully.
WARNING |
WARNING |
Mechanical |
Electrical |
When you see this Safety Symbol on the following pages, it will alert you to the possibility of damage to your garage door and/or the garage door opener if you do not comply with the corresponding instructions. Read the instructions carefully.
CAUTION
This garage door opener is designed and tested to offer safe service provided it is installed, operated, maintained and tested in strict accordance with the safety instructions contained in this manual.
2
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!
Ropes left on a garage door could cause someone to become entangled and killed.
Remove all ropes connected to the door before installing and operating the opener.
Identify the type and height of your door, any special conditions that exist, and any additional materials that may be required, by referring to page 4.
CAUTION
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.
Test your Door
Before you begin, complete the following test to make sure your door is balanced, and is not sticking or binding:
•Lift the door about halfway as shown. Release the door. It should stay in place, supported entirely by its springs.
•Raise and lower the door to see if there is any binding or sticking.
SECTIONAL DOOR |
ONE-PIECE DOOR |
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Safety Reversing Sensor |
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Installation Hardware |
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Installation Hardware |
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Lag Screw 1/4 x 1-1/2" (4) |
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Hex Screw 5/16"-18 x 7/8" (4) |
Screw 6AB x 1" (2) |
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Hex Screw #8 x 3/8" (2) |
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Insulated Staples (10) |
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Hex Screw 1/4-20 x 1-1/2" (2) |
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Lag Screw 5/16"-18 x 1-7/8" (4) |
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Ring Fastener (3) |
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Carriage Bolts 1/4" - 20 x 1/2" (4) |
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Carriage Bolt 5/16"-18 x 2-1/2" (2) |
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Handle |
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Screw #10 - 32 x 3/8" (4) |
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Clevis Pin 5/16" x 2-3/4" (1) |
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Dry Wall Anchors (2) |
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Lock Nut 1/4" - 20 (4) |
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Clevis Pin 5/16" x 1" (2) |
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Rail Grease |
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Lock Nut #10 x 32 (4) |
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Nut 5/16" - 18 (6) |
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Rope |
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Wing Nut (2) |
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Lock Washer 5/16" (6) |
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Insulated Staples (20) |
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3
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
Horizontal and vertical reinforcement |
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is needed for lightweight garage doors |
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Slack in belt tension |
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(fiberglass, steel, aluminum, door with glass panels, etc.). |
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is normal when |
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See page 20 for details. |
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garage door is closed. |
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FINISHED CEILING Support bracket & fastening hardware is required.
See page 13.
Header Wall
— — —
Door Center
— — —
— —
Floor must be level across width of door
Safety Reversing Sensor
Extension Spring |
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OR |
OR |
Torsion Spring |
One-Piece Door-Extension Spring |
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Header |
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Wall |
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Access Door |
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Track |
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Door |
Safety |
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Reversing |
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Sensor |
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ONE-PIECE Door Without Track Installation
FINISHED CEILING Support bracket & fastening 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
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
Multi-Function
Door Control Panel
2-Conductor Bell Wire
White & White/Red
ONLY
MOUNT
CEILING
UP
Header Bracket
Remote Control Transmitter (1) with 12V battery
Light Lens (2)
Trolley
Belt
Pulley Bracket
"C" Wrap (2)
Belt Cap Retainer
Remote Control
Transmitter Visor Clip
Styrofoam
Belt
One-Piece
T-rail
Door Bracket Plate
Door Bracket
Straight Door
Arm Section
Safety Reversing Sensor |
Safety Reversing Sensor (2) |
Mounting Bracket |
(1) Sending Eye |
With Square Holes (2) |
(1) Receiving Eye |
Safety Reversing Sensor |
2-Conductor Bell Wire with Connector |
Mounting Bracket |
White & White/Black (2 rolls) |
With Slot (2) |
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Curved Door
Arm Section
Safety Labels
and
Literature
5
Assembly Section: Pages 6 - 7
ASSEMBLY STEP 1
Attach the T-Rail To the Opener
CAUTION
To fasten rail, use only those screws mounted in the top of the opener. Any other screws will cause serious damage to the opener.
•Remove the two washered screws mounted in top of opener.
•Align T-rail and styrofoam over opener sprocket.
•Cut tape from T-rail, belt and styrofoam.
•REMOVE STYROFOAM.
•Insert both washered screws through the T-rail into the opener. Tighten both screws securely .
USE ONLY THESE SCREWS! Any other screws will cause serious damage to the opener.
Position belt over the opener sprocket.
Washered Screw
5/16"-18x1/2" 
Styrofoam
USE ONLY THIS |
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TYPE AND SIZE |
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SCREW |
Hole |
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Washered Screw |
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5/16"-18x1/2" |
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Opener |
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Sprocket |
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T-Rail |
Belt
T-Rail
Hole
ASSEMBLY STEP 2
Set the Belt Tension
Figure A
Trolley
Trolley
Threaded
Shaft
Spring
Trolley Nut
Figure B
Trolley
Threaded
Nut Shaft
Ring
Square End
Nut Ring
Slots
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).
•By hand, thread the spring trolley nut on the threaded shaft until it is finger tight against the trolley (Figure A). Do not use any tools.
•Insert a screwdriver tip into one of the nut ring slots and brace it firmly against the trolley (Figure B).
This extends the spring for optimum belt tension.
Figure C |
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Trolley |
Nut Ring |
Trolley |
Nut Ring |
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BEFORE |
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AFTER RELEASE |
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1" |
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1-1/4" |
6
ASSEMBLY STEP 3
Attach the Belt Cap Retainer
•Position the belt cap retainer over the opener sprocket so the two holes in cap align with the two holes in mounting plate. Attach with #8x3/8" hex screws provided.
Hardware Shown Actual Size
Hex Screw
#8 x 3/8"
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.
Hex Screws
# 8 x 3/8"
Belt Cap
Retainer
Opener Sprocket
Mounting Plate
Belt
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 oneinch 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
Installation Section: Pages 8 – 23
Installation Step 1
Determine Header Bracket Location
Installation procedures vary according to garage door types. Follow the instructions which apply to your door.
SECTIONAL Doors and One
Piece Door With Track
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Vertical |
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Finished |
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Ceiling |
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Header |
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Guideline |
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Wall |
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2x4 |
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Vertical
Guideline
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.
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.
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.
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.
•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.
Ceiling |
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Header |
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Wall |
Track |
2" |
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Highest Point |
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of Travel |
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Door |
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Header |
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Wall |
Track |
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2" |
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Highest Point |
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of Travel |
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Door |
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Sectional door |
One-piece door with |
with curved track |
horizontal track |
Proceed to Step 2, page 10.
8
ONE-PIECE Door Without Track
Read the Safety Instructions on page 8. They also apply to doors without tracks.
•Close the door and mark the inside vertical centerline of your garage door. Extend the line onto the header wall above door.
If headroom clearance is minimal, you can install the header bracket on the ceiling. See page 10.
•If you need to install the header bracket on a 2x4 (on wall or ceiling), use lag screws (not supplied) to securely fasten the 2x4 to structural supports as shown.
Unfinished
Header Wall |
Vertical |
Ceiling |
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Centerline |
2x4 |
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Structural Supports
Vertical |
2x4 |
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Header Support |
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Centerline of |
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Garage Door |
OPTIONAL CEILING MOUNT |
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FOR HEADER BRACKET |
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Header Wall |
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Highest Point |
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of Travel |
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Door |
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Jamb |
Distance |
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Hardware |
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One-piece door without track jamb 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).
•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.
Header |
Highest Point |
Wall |
of Travel |
Door |
Distance |
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Pivot |
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One-piece door without track pivot hardware
EXAMPLE |
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Distance from top of door |
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(at highest point of travel) to floor |
...........................92" |
Actual height of door ............................................. |
-88" |
Remainder................................................................ |
4" |
Add......................................................................... |
+8" |
Bracket height on header wall.............................. |
=12" |
(Measure UP from top of CLOSED door.)
Proceed to Step 2, page 10.
9
Installation Step 2
Install the Header Bracket
You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow the instructions which will work best for your particular requirements.
Fasten the Header Bracket to the Wall
•Center the bracket on the vertical guideline with the bottom edge of the bracket on the horizontal line as shown (with the arrow pointing toward the ceiling).
•Mark either set of bracket holes (do not use the holes designated for ceiling mount). Drill 3/16" pilot holes and fasten the bracket securely to a structural support with the hardware provided.
Header
Wall
Header
Bracket
2x4 Structural Support
2"
Highest
Point of Travel
(of Garage Door)
ONLY MOUNT CEILING
UP
Vertical |
Wall |
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Mounting Holes |
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Center |
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Lag Screws |
CEILING MOUNT ONLY |
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5/16"x9x1-5/8" |
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UP
Door Spring The nail hole is for positioning
only. You must use lag screws to
mount the header bracket.
Optional
Wall Mounting
Holes
Garage |
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Hardware Shown Actual Size |
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Door |
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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
•Center 6" toward against
•Mark 3/16"
Ceiling Mounting Holes
CEILING MOUNT ONLY
UP
The nail hole is for positioning only. You must use lag screws to mount the header bracket.
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Finished |
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Ceiling |
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Vertical |
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Center Line |
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Header |
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Bracket |
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UP |
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6" Maximum |
Door |
Lag Screws |
Spring |
5/16"x9x1-5/8" |
Header
Wall
Vertical
Center Line
Garage
Door
10
Installation Step 3
Attach the T-rail to the Header Bracket
Header Wall
Header
Bracket
Belt Pulley
Bracket
T-rail
•Position the openerThe onChamberlainthe garage floorGroup,belowIncthe.
header bracket. Use packing material as a protective baseLiftmaster. Synchro Drive
Attach Tee Rail to Header Brac
If the door spring is in the way you'll need help.
Have someone 5/16/92hold the opener securely on a temporary support to allow the T-rail to clear the
spring.
•Position the belt pulley bracket against the header bracket.
•Align the bracket holes and join with a clevis pin as shown.
•Insert a ring fastener to secure.
Ring Fastener
Header Bracket
Clevis Pin
5/16"x2-3/4 "
Belt Pulley
Bracket
T-rail
Garage
Door
Temporary
Support
Hardware Shown Actual Size
Clevis Pin |
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5/16" x 2-3/4" |
Ring Fastener |
11
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