Chamberlain 1280-298LMC User Manual

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.

Start by reviewing these important safety alert symbols

CONTENTS PAGE

A review of safety alert symbols ...............................2

You'll need tools........................................................3

Safety information regarding garage door locks

and ropes...............................................................3

Testing your garage door for sticking, binding

and balance ...........................................................3

llustration of sectional door installation ....................4

Illustration of one-piece door installation...................4

Carton inventory........................................................5

Hardware inventory...................................................5

Assembly Section - Pages 6 – 7

Attach T-rail to opener ............................................6

Set the belt tension .................................................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 header bracket............................................10

Attach the T-rail to header bracket........................11

Position the opener...............................................12

Hang the opener ...................................................13

Install the door control...........................................14

Install the lights and lenses...................................15

Attach manual release rope and handle ...............15

CONTENTS PAGE

Electrical requirements .........................................16

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

When you see these Safety Symbols on the following pages, they will alert you to the possibility of

serious injuries or death

if you do not comply with the corresponding instructions. The hazard may

come from something mechanical or from electric shock.

Read the instructions carefully.

When you see this Safety Symbol on the following pages, it will alert you to the possibility of damage to your garage door and/or the garage door opener if you do not comply with the corresponding instructions.

Read the instructions carefully.

This garage door opener is designed and tested to offer safe service provided it is installed, operated, maintained and tested in strict accordance with the safety instructions contained in this manual.

Mechanical Electrical

WARNING

CAUTION

You'll Need Tools

During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.

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.

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 and any special conditions that exist and any additional materials that may be required by referring to page 4.

Before you begin, complete the following test to make sure your door is balanced, and is not sticking or binding:

• Lift the door about halfway as shown. Release the door. It should stay in place, supported entirely by its springs.

• Raise and lower the door to see if there is any binding or sticking.

Pencil

Carpenter's

Level

Tape Measure

Hack Saw

Wire Cutters

Stepladder

Drill

1/2" and 7/16" Sockets

and Wrench

3/16", 5/16" and

5/32" Drill Bits

WARNING

Claw Hammer

Pliers

Screwdriver

Adjustable End Wrench

CAUTION

SECTIONAL DOOR

ONE-PIECE DOOR

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.

Sectional Door Installation

One-Piece Door with Track

One-Piece Door Installation without Track

FINISHED CEILING

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

Torsion Spring

Support bracket &

fastening hardware

is required.

See page 13.

Extension Spring OR

Access Door

Safety

Reversing

Sensor

Floor must be level

across width of door

Safety Reversing Sensor

Model 1702LMC Outisde Quick Release

is required if there is no access door.

Header

Wall

Access Door

FINISHED CEILING

Support bracket

& fastening

hardware is required.

See page 13.

Safety

Reversing

Sensor

Gap between floor

and bottom of door

must not exceed 1/4".

Safety

Reversing

Sensor

Access

Door

Safety

Reversing Sensor

Safety

Reversing Sensor

Floor must be level

across width of door

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.

Carton Inventory

INSTALLATION HARDWARE

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) Lock Washer 5/16" (6) Screw 6ABx1-1/4" (2) Screw 6-32x1" (2)

Insulated Staples (10) Ring Fastener (3) Dry Wall Anchors (2) Rope Handle Rail Grease

SAFETY REVERSING SENSOR INSTALLATION HARDWARE

Carriage Bolt 1/4"-20x1/2" (2) Wing Nut (2) Insulated Staples (20)

LOCK

LIGHT

Motion Detecting

Door Control Panel

2-Conductor Bell Wire

White & White/Red

CEILING MOUNT ONLY

Header Bracket

SECURITY✚ 3-Channel

Remote Control (2)

Light Lens (2)

Belt

Pulley Bracket

Remote Control

Transmitter Visor Clip

SECURITY✚

Keyless Entry

Styrofoam

Belt

Belt Cap Retainer

One-Piece

T-rail

Curved Door

Arm Section

Trolley

Door Bracket

Safety Sensor

Bracket (2)

(2) Safety Reversing Sensors

(1 Sending Eye and 1 Receiving Eye)

2-Conductor White & White/Black Bell Wire

Safety Labels

with

attached

and

Literature

Straight Door

Arm Section

ASSEMBLY STEP 1

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.

• 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.

ASSEMBLY STEP 2

Set the Belt Tension

• 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.

Assembly Section: Pages 6 - 7

Figure A

Figure B

Figure C

CAUTION

Washered Screw

USE ONLY THIS

TYPE AND SIZE

SCREW

5/16"-18x1/2"

Belt

T-Rail

Hole

Washered Screw

5/16"-18x1/2"

T-Rail

Hole

Belt

Styrofoam

Opener

Sprocket

T-Rail

Hole

Trolley

Threaded

Shaft

Spring

Trolley Nut

Square End

Trolley

Nut

Ring

Trolley

Threaded

Shaft

Nut Ring

Slots

Trolley

Nut Ring Trolley

BEFORE AFTER RELEASE

1" 1-1/4"

Nut Ring

Assembly Step 3

Attach the Belt Cap Retainer

IMPORTANT INSTALLATION INSTRUCTIONS

To reduce the risk of severe injury or death to persons:

1. READ AND FOLLOW ALL INSTALLATION INSTRUCTIONS.

2. Install only on a properly balanced 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.

• 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

You have now finished assembling your garage door opener. Please read the following warnings before proceeding to the installation section:

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.

Hex Screw

#8x3/8"

WARNING

Hex Screws

# 8 x 3/8"

Belt Cap Retainer

Opener Sprocket

Mounting Plate

WARNING

• 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.

Vertical

Guideline

Finished

Ceiling

Vertical

Guideline

Header

Wall

2x4 Structural

Supports

SECTIONAL Doors and

ONE-PIECE Door With Track

• 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".)

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.

Installation Section: Pages 8 – 23

Sectional door with

curved track

One-piece door with

horizontal track

Installation Step 1

Determine Header Bracket Location

Installation procedures vary according to garage door types. Follow the instructions which apply to your door.

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 professional

garage door service.

WARNING

Door

Ceiling

Header

Wall

Highest Point

of Travel

Track

Header

Highest Point

Door

Wall

of Travel

Track

• 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.

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.

ONE-PIECE Door Without Track

• 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.

One-piece door without track

jamb hardware

One-piece door without track

pivot hardware

Read the Safety Instructions on page 8. They also apply to doors without tracks.

Header Wall

Highest Point

of Travel

Header Wall

Vertical

Centerline

2x4

Vertical Centerline of Garage Door

Unfinished

Ceiling

OPTIONAL CEILING MOUNT

Wall

Highest Point

of Travel

Header

Structural

Supports

2x4

Door

Jamb

Hardware

Distance

Door

Distance

Pivot

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.

• 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

Installation Step 2

Install the Header Bracket

Hardware Shown Actual Size

Vertical

Header

Wall

2x4

Structural

Support

Highest

Point of Travel

(of Garage Door)

Header

Bracket

CEILING MOUNT ONLY

Center

Line

Garage

Door

Vertical

Center

Line

Door

Spring

Mounting Holes

Lag Screws

5/16"-9x1-5/8"

CEILING MOUNT ONLY

The nail hole is for positioning

only. You must use lag screws to

mount the header bracket.

Optional

Wall Mounting

Holes

Lag Screw

5/16"-9x1-5/8"

Wall

Ceiling Mounting Holes

CEILING MOUNT ONLY

The nail hole is for positioning only.

You must use lag screws to mount

the header bracket.

Door

Spring

6" Maximum

Garage

Door

Header Bracket

Finished

Ceiling

Vertical

Center Line

Lag Screws

5/16"-9x1-5/8"

Header

Wall

Vertical

Center Line

• Position the opener on the garage floor below the header bracket. Use packing material as a protective base.

If the door spring is in the way you'll need help. Have someone hold the opener securely on a temporary support to allow the 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.

Installation Step 3

Attach the T-rail to the Header Bracket

Hardware Shown Actual Size

Header Wall

Header

Bracket

Belt Pulley

Bracket

T-rail

Liftmaster Synchro Drive Tee Rail to Header Bracket 5/16/92

Ring Fastener

Header Bracket

Garage

Door

Clevis Pin

5/16"x2-3/4 "

Belt Pulley

Bracket

T-rail

Temporary

Support

Clevis Pin

5/16"x2-3/4"

Ring Fastener

+ 25 hidden pages