Chamberlain 1270LMC User Manual

Garage Door Opener

Model 1270LMC

- 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

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 of your

opener.

is connected and

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 Section - Pages 8 – 23

Installation safety instructions.................................7

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 connections ...........................................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

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 injuries 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

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.

You'll Need Tools

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

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

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 and 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

Claw Hammer

Pliers

Screwdriver

Adjustable End Wrench

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.

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

Before you begin, survey your garage area to see whether any of the conditions below apply to your installation.

Sectional Door 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

FINISHED CEILING

Support bracket & 

fastening hardware

is required.

See page 13.

Slack in belt tension

is normal when

garage door is closed.

Extension Spring

Torsion Spring

Access Door

Safety

Reversing

Sensor

Floor must be level

Safety

Reversing Sensor

across width of door

One-Piece Door Installation

One-Piece Door without Track

Header

Wall

Model 1702LMC Outside Quick Release



is required if there is no access door.

Slack in belt tension

is normal when

garage door is closed

Access Door

FINISHED CEILING

Support bracket

& fastening hardware

may be required.

See page 13.

One-Piece Door with Track

Slack in belt tension

is normal when

garage door is closed.

Access

Door

Safety

Reversing

Sensor

Safety

Reversing

Sensor

Gap between floor and bottom of door

must not exceed 1/4".

You may find it helpful to refer back to this page as you proceed with the installation of your opener.

Safety

Reversing Sensor

Safety

Reversing Sensor

Floor must be level

across width of door

Opener 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.

LOCK

LIGHT

Multi-Function

Door Control Panel

2-Conductor Bell Wire

White & White/Red

CEILING MOUNT ONLY

Header Bracket

Light Lens (2)

Belt

Pulley Bracket

Door Bracket

Single-Function Remote Control

Transmitter (1)

Trolley

Remote Control

Transmitter Visor Clip

Door Bracket Plate

One-Piece

T-rail

Safety Reversing Sensor (2)

(1) Sending Eye

(1) Receiving Eye

Belt Cap Retainer

Styrofoam

Belt

Curved Door

Arm Section

2-Conductor Bell Wire

with Connector (2 rolls)

White & White/Black

Straight Door

Arm Section

Safety Reversing Sensor

Mounting Bracket

With Slot (2)

Safety Reversing Sensor

Mounting Bracket

With Square Holes (2)

Installation Hardware

Hex Screw 5/16"-18x7/8" (4) Hex Screw #8x3/8" (2) Lag Screw 5/16"-18x1-7/8" (4) Carriage Bolt 5/16"-18x2-1/2" (2) Clevis Pin 5/16"x2-3/4" (1) Clevis Pin 5/16"x1" (2) Nut 5/16"-18 (6) Lock Washer 5/16" (6)

Screw 6ABx1" (2) Handle Insulated Staples (10) Ring Fastener (3) Rail Grease Rope Dry Wall Anchors (2)

Safety Labels

and

Literature

"C" Wrap (2)

Safety Reversing Sensor

Installation Hardware

Lag Screw 1/4"x1-1/2" (4) Carriage Bolt 1/4"-20x1/2" (4) Lock Nut 1/4"-20 (4) Wing Nut (2) Hex Screw 1/4"-20x1-1/2" (2) Screw #10-32x3/8" (4) Lock Nut #10-32 (4) Insulated Staples (20)

Assembly Section: Pages 6 – 7

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.

Remember to use only these screws!

screws will cause serious damage to the opener.

• Position belt over the opener sprocket.

Any other

CAUTION

To fasten rail, use only those screws mounted in top of the opener. Failure to do so will cause serious damage to the opener.

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

Styrofoam

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.

• Insert a small screwdriver tip into one of the insert slots of the nut ring, and hold firmly.

• Using an open end wrench at the square end, slightly rotate the assembly clockwise until the nut ring is released against the trolley, providing tension for the best operation of the opener.

Do not overtighten.

Open End

Wrench

Belt

Nut

Ring

T-rail

Hole

Trolley

Trolley

Threaded

Shaft

Spring

Trolley Nut

Trolley

Threaded Shaft

Nut Ring

Insert Slot

Trolley

Square End

Screw-

driver

Assembly Step 3

Attach the Belt Cap Retainer

WARNING

Serious injury can result if fingers become entangled in moving opener sprocket. Attach sprocket cover securely. Never operate opener while your hand is near the opener sprocket.

• Position the belt cap retainer over the opener sprocket so the two holes in cap align with the two holes in mounting plate. Attach with #8x3/8" hex screws provided.

Hardware Shown Actual Size

Hex Screw

#8x3/8"

Belt

Hex Screws

#8x3/8"

Belt Cap Retainer

Opener Sprocket

Mounting Plate

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

IMPORTANT INSTALLATION INSTRUCTIONS

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.

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 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.

Repairs to cables, spring assemblies and other hardware

An improperly balanced door

Vertical

Guideline

Finished

Ceiling

Vertical

Guideline

Header

Wall

2x4 Structural

Supports

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

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.

• 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 to 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. (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.

The door might

Call for garage door

only

• 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

Highest Point

of Travel

Track

Header

Wall

Highest Point

Door

One-piece door with

horizontal track

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

Garage Door

2x4

Vertical

Centerline of

Unfinished

Ceiling

OPTIONAL CEILING MOUNT

Header

Wall

Highest Point

of Travel

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.

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).

Vertical

Header

Wall

2x4

Structural

Support

Highest

Point of Travel

(of Garage Door)

Header Bracket

CEILING MOUNT ONLY

Center

Line

Vertical

Center

Line

Garage

Door

5/16"x18x1-7/8"

Door

Spring

• 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

Lag Screws

CEILING MOUNT ONLY

The nail hole is for positioning

only. You must use lag screws to

mount the header bracket.

Optional 

Wall Mounting

Holes

Hardware Shown Actual Size

Lag Screw

5/16"-18x1-7/8"

Fasten the Header Bracket to the Ceiling

• 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.

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"x18x1-7/8"

Header

Wall

Vertical

Center Line

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 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 "

Hardware Shown Actual Size

Belt Pulley

Bracket

T-rail

Temporary

Support

Clevis Pin

5/16"x2-3/4"

Ring Fastener

+ 25 hidden pages