Chamberlain 1280 - 1-2 HP User Manual
TM
Garage Door Opener
OWNER'S MANUAL
Model 1280
- 1/2 HP -
For Residential Use Only
The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illinois 60126-1196
Complies with UL 325
Regulations effective
January 1, 1993
®
■ 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
and ropes..............................................................3
Testing your garage door for sticking, binding
and balance..........................................................3
Illustration of sectional door installation .................4
Illustration of one-piece door installation...............4
Carton inventory.....................................................5
Assembly section - pages 6 – 7
Fasten T-rail to opener.........................................6
Tighten the belt.....................................................6
Attach belt cap retainer.........................................7
Installation safety instructions...............................7
Installation section - pages 8 – 23
Determine header bracket location
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
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
Adjustment section - pages 24 – 26
Travel limit adjustments......................................24
Force adjustments..............................................25
Test The Protector®System ..............................26
Test the safety reverse system ..........................26
Operation safety instructions................................27
Care of your opener..............................................27
Maintenance schedule..........................................27
Operation of your opener......................................28
Receiver & 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
come from something mechanical or from electric shock.
if you do not comply with the corresponding instructions. The hazard may
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
CAUTION
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.
pulleys, brackets and their hardware, are
under extreme tension and can cause serious
injury or death.
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.
Garage doors, door springs, cables,
Do not try to loosen, move or
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
Installation Hardware
Hex Screw 5/16"-18 x 7/8" (4)
Hex Screw #8 x 3/8" (2)
Lag Screw 5/16"-18 x 1-7/8" (4)
Carriage Bolt 5/16"-18 x 2-1/2" (2)
Clevis Pin 5/16" x 2-3/4" (1)
Clevis Pin 5/16" x 1" (2)
Nut 5/16" - 18 (6)
Lock Washer 5/16" (6)
Screw 6AB x 1" (2)
Insulated Staples (10)
Ring Fastener (3)
Handle
Dry Wall Anchors (2)
Rail Grease
Rope
3
ONE-PIECE DOOR
Safety Reversing Sensor
Installation Hardware
Lag Screw 1/4 x 1-1/2" (4)
Hex Screw 1/4-20 x 1-1/2" (2)
Carriage Bolts 1/4" - 20 x 1/2" (4)
Screw #10 - 32 x 3/8" (4)
Lock Nut 1/4" - 20 (4)
Lock Nut #10 x 32 (4)
Wing Nut (2)
Insulated Staples (20)
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
is needed for lightweight garage doors
(fiberglass, steel, aluminum, door with glass panels, etc.).
See page 20 for details.
Header Wall
— — — — — — — —
Door Center
Slack in belt tension
is normal when
garage door is closed.
Torsion Spring
FINISHED CEILING
Support bracket &
fastening hardware
is required.
See page 13.
Extension Spring
OR
One-Piece Door-Extension Spring
OR
Header
Wall
Access Door
Floor must be level
across width of door
Safety Reversing Sensor
ONE-PIECE Door Without Track Installation
Header
Wall
Door
Track
Safety
Reversing
Sensor
FINISHED CEILING
Support bracket
& fastening
hardware is required.
See page 13.
Access Door
Safety
Reversing
Sensor
Gap between floor and bottom of
door must not exceed 1/4".
Safety Reversing Sensor
Y ou 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
Remote Control
Transmitter (1)
with 12V battery
Belt
Pulley Bracket
Remote Control
Belt Cap Retainer
Transmitter Visor Clip
Styrofoam
Belt
Light Lens (2)
One-Piece
T-rail
Trolley
Door Bracket Plate
CEILING MOUNT ONLY
UP
Header Bracket
Safety Reversing Sensor
Mounting Bracket
With Square Holes (2)
Safety Reversing Sensor
Mounting Bracket
With Slot (2)
"C" Wrap (2)
Safety Reversing Sensor (2)
(1) Sending Eye
(1) Receiving Eye
2-Conductor Bell Wire with Connector
White & White/Black (2 rolls)
5
Door Bracket
Straight Door
Arm Section
Curved Door
Arm Section
Safety Labels
and
Literature
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
Belt
T-Rail
Hole
USE ONLY THIS
TYPE AND SIZE
SCREW
T-Rail
Hole
Opener
Sprocket
Belt
Washered Screw
5/16"-18x1/2"
T-Rail
Hole
• 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).
• 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).
This extends the spring for optimum belt tension.
WARNING
CAUTION
WARNING
Assembly Section: Pages 6 - 7
Trolley
Threaded
Shaft
Spring
Trolley Nut
Trolley
Nut
Ring
Trolley
Threaded
Shaft
Nut Ring
Slots
Trolley
Square End
Figure A
Figure B
Nut Ring Trolley
Nut Ring
Trolley
1" 1-1/4"
BEFORE AFTER RELEASE
Figure C
ASSEMBLY STEP 1
Attach the T-Rail 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!
will cause serious damage to the opener.
Position belt over the opener sprocket.
Any other screws
ASSEMBLY STEP 2
Set the Belt Tension
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 INST ALLATION 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.
could result in severe injury or death.
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.
Repairs to cables, spring assemblies and other hardware
An improperly balanced 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
Vertical
Header
Wall
Guideline
2x4
Vertical
Guideline
Finished
Ceiling
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).
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.
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
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.
The door might
Call for garage door
only
if
• 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.
Proceed to Step 2, page 10.
Door
Sectional door
with curved track
Ceiling
Header
Wall
2"
Highest Point
of Travel
8
Track
Header
Highest Point
Door
One-piece door with
horizontal track
Wall
2"
of Travel
Track
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.
Header Wall
Highest Point
of Travel
Header Wall
Vertical
Centerline
2x4
Vertical
Centerline of
Garage Door
Unfinished
Ceiling
Header Support
OPTIONAL CEILING MOUNT
FOR HEADER BRACKET
Wall
Highest Point
of Travel
Header
Structural Supports
2x4
Door
Jamb
Hardware
Distance
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.
Door
Distance
Pivot
One-piece door without track
pivot hardware
EXAMPLE
Distance from top of door
(at highest point of travel) to floor...........................92"
Actual height of door.............................................-88"
Remainder................................................................4"
Add.........................................................................+8"
Bracket height on header wall..............................=12"
(Measure UP from top of CLOSED door.)
Proceed to Step 2, page 10.
9
Lag Screws
5/16"x9x1-5/8"
Highest
Point of Travel
(of Garage Door)
Vertical
Center
Line
Header
Wall
Garage
Door
UP
CEILING MOUNT ONLY
Wall
Mounting Holes
Optional
Wall Mounting
Holes
The nail hole is for positioning
only. You must use lag screws to
mount the header bracket.
UP
CEILING MOUNT ONLY
2"
Door
Spring
Header
Bracket
2x4
Structural
Support
Vertical
Center
Line
Installation Step 2
Lag Screw
5/16"-9 x 1-5/8"
Lag Screws
5/16"x9x1-5/8"
Highest
Point of Travel
(of Garage Door)
Vertical
Center
Line
Header
Wall
Garage
Door
UP
CEILING MOUNT ONLY
Wall
Mounting Holes
Optional
Wall Mounting
Holes
UP
CEILING MOUNT ONLY
Ceiling Mounting Holes
The nail hole is for positioning
only. You must use lag screws to
mount the header bracket.
The nail hole is for positioning only.
You must use lag screws to mount
the header bracket.
UP
CEILING MOUNT ONLY
2"
Door
Spring
Header
Bracket
2x4
Structural
Support
Vertical
Center
Line
UP
Lag Screws
5/16"x9x1-5/8"
Garage
Door
Vertical
Center Line
Header
Wall
Finished
Ceiling
Header
Bracket
6" Maximum
Vertical
Center Line
Door
Spring
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.
Hardware Shown Actual Size
• Extend the vertical guideline onto the ceiling as
shown.
• Center the bracket on the vertical mark, no more than
6" from the wall. Make sure the arrow is pointing
toward the wall. The bracket can be mounted flush
against the ceiling when clearance is minimal.
• Mark holes designated for ceiling mount only. Drill
3/16" pilot holes and fasten bracket securely to a
structural support with the hardware provided.
Fasten the Header Bracket to the Ceiling
10
k
Installation Step 3
Attach the T-rail to the Header Bracket
Header Wall
Header
Bracket
Belt Pulley
Bracket
T-rail
• Position the opener on the garage floor below the
header bracket. Use packing material as a
protective base.
If the door spring is in the way you'll need help.
Have someone hold the opener securely on a
The Chamberlain Group, Inc.
Liftmaster Synchro Drive
Attach Tee Rail to Header Brac
5/16/92
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
Garage
Door
Clevis Pin
5/16"x2-3/4 "
INCREASE
DOWN
TRAVEL
INCREASE
TRAVEL
UP
Hardware Shown Actual Size
Belt Pulley
Bracket
T-rail
Temporary
Support
Clevis Pin
5/16" x 2-3/4"
Ring Fastener
11
Loading...