Liftmaster 1260 User Manual

TM

The Chamberlain Group, Inc.

A DUCHOSSOIS ENTERPRISE

845 Larch Avenue

Elmhurst, Illinois 60126

Complies with UL 325 Regulations

effective

®

January 1, 1993.

Garage Door Opener

Owner's Manual

(Model Series 1200)

For Residential Use Only

©

©

Model 1260 - 1/2HP

Model 1256 - 1/2HP

Model 1260-166

- 1/2HP

Model 1246 - 1/3HP

Model 1260-266

- 1/2HP

Model 1250

- 1/3HP

Model 1250-266

- 1/3HP

©

©

	Model 1255 - 1/2HP						Model 1240 - 1/4HP
Model 1255-166			- 1/2HP
Model 1255-266			- 1/2HP
	Model 1245		- 1/3HP
Model 1245-266			- 1/3HP

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 and adjustment of the opener are required to ensure safe operation.

■The model number label is located on the front panel of your opener.

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 ................		5
Carton inventory .....................................................		6
Hardware inventory ................................................		7
Assembly Section - Pages 8 – 11
Fasten T-rail to opener .....................................		8, 9
Attach chain to sprocket, install sprocket cover		....8
Attach chain spreader, re-install chain ...............		10
Tighten the chain ................................................		11
Installation Section - Pages 11 – 27
Installation safety instructions.............................		11
Determine header bracket location
Sectional door...................................................		12
One-piece door.................................................		13
Install header bracket .........................................		14
Attach the T-rail to header bracket .....................		15
Position the opener.............................................		16
Hang the opener.................................................		17
Install the door control ........................................		18
Install the light(s) and lens(es)............................		19

CONTENTS	PAGE
Attach manual release rope and handle.............	19
Electrical requirements ........................................	20
Safety reversing sensor information ....................	21
Install the safety reversing sensor .................	22, 23
Fasten door bracket (sectional door) ...................	24
Fasten door bracket (one-piece door)..................	25
Connect door arm to trolley (sectional door)........	26
Connect door arm to trolley (one-piece door)	27
Adjustment Section - Pages 28 – 30
Travel limit adjustments .......................................	28
Force adjustments ...............................................	29
Test the safety reversing sensor..........................	30
Test the safety reverse system ...........................	30
Operation safety instructions .................................	31
Care of your opener ...............................................	31
Maintenance schedule ...........................................	31
Operation of your opener .......................................	32
Receiver and remote control programming............	33
Having a problem?...........................................	34, 35
Repair parts, rail assembly ....................................	36
Repair parts, installation ........................................	36
Repair parts, opener assembly ..............................	37
Accessories............................................................	38
Index ......................................................................	39
How to order repair parts .......................................	40
Maintenance agreement ........................................	40
Warranty ................................................................	40

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 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

You'll Need Tools

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

			Pencil
Carpenter's	1	2
Level				Hack Saw
	Tape Measure
			Wire Cutters
Drill		3/16", 5/16" and		Claw Hammer
		5/32" Drill Bits	Pliers
Stepladder	1/2" and 7/16" Sockets		Screwdriver	Adjustable End Wrench
	and Wrench

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 and any special conditions that exist and any additional materials that may be required by referring to the lists on page 4 or page 5.

SECTIONAL DOOR

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.

ONE-PIECE DOOR

3

Sectional Door Installation

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

FINISHED CEILING Support bracket & fastening hardware is required.

See page 13.

Slack in chain tension is normal when garage door is closed.

— — —	Door
	Center
— — —
— —
	Floor must be level
Safety	across width of door

Extension Spring

OR

Torsion Spring

Access Door

Safety

Reversing

Sensor

Reversing

Sensor

Based on your particular requirements, there are several installation steps which might call for materials and/or hardware not included in the carton.

•Step 1, page 12 - Look at the wall or ceiling above the garage door. The header bracket must be securely fastened to structural supports.

•Step 5, page 17 - Do you have a finished ceiling in your garage? If so, a support bracket and additional fastening hardware may be required.

•Safety reversing sensor, page 21 - Depending upon garage construction, wood blocks may need to be fastened to mounting locations before sensors are installed.

•Step 10, page 22 - Alternate floor mounting of the safety reversing sensor will require hardware not provided.

•Step 11, page 24 - Do you have a steel, aluminum, fiberglass or glass panel door? If so, horizontal and vertical reinforcement is required.

•Look at the garage door where it meets the floor. It must close on the floor all the way across. Otherwise, the safety reverse system may not work properly. See page 30. Floor or door should be repaired.

•If your door is more than 7 feet high, see longer rails available on page 38.

	Header	Chain	Closed Position
	Bracket	Pulley		Chain
		Bracket	Trolley
	Garage
		Door
	Spring			Manual
			Straight	Release
				Rope & Handle
			Door
			Arm
		Curved
Header			Door
			Arm
Wall	Door Bracket
Garage
Door

•The opener can be installed within 2 feet to the left or right of the door center if there is a torsion spring or center bearing plate in the way of the header bracket or door bracket area. If your door has extension springs, the opener must be installed

in the center of the door. See pages 12 and 24.

•Do you have an access door in addition to the garage door? If not, Model 1702 Outside Quick Release is required. See page 38.

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

4

One-Piece Door Installation

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

Slack in chain tension is normal when garage door is closed.

Header

Wall

One-Piece Door without Track

FINISHED CEILING Support bracket & fastening hardware is required. See page 17.

Access Door

		Safety Reversing Sensor
	Safety	Gap between floor and bottom of
		door must not exceed 1/4".
	Reversing
	Sensor

Based on your particular requirements, there are several installation steps which might call for materials and/or hardware not included in the carton.

•Step 1, page 12 - Look at the wall or ceiling above the garage door. The header bracket must be securely fastened to structural supports.

•Step 5, page 17 - Do you have a finished ceiling in your garage? If so, a support bracket and additional fastening hardware (not supplied) may be required

•Safety reversing sensor, page 21 - Depending on garage construction, wood blocks may need to be securely fastened to mounting locations before sensors are installed.

•Step 10, page 22 - Alternate floor mounting of the safety reversing sensor will require hardware that is not provided.

•Step 11, page 25 - Generally, a one-piece door does not require reinforcement. If your door is lightweight, you can refer to the information relating to sectional doors on page 24.

•Step 11, page 25 - Depending on your door's construction, you might need additional mounting hardware for the door bracket.

•Do you have an access door in addition to the garage door? If not, Model 1702 Outside Quick Release is required. See page 38.

•The gap between the bottom of the garage door and the floor cannot exceed 1/4". Otherwise, the safety reverse system may not work properly. See

page 30. The floor or the door should be repaired.

		Closed Position
	Chain
	Pulley Bracket			Trolley
	Header
	Bracket	T-rail
	Door
	Bracket
					Manual
		Straight	Curved		Release
					Rope & Handle
		Door	Door
	Garage
		Arm	Arm
Header	Door
Wall

	One-Piece Door with Track
			Slack in Chain Tension
			is Normal When
			Garage Door is Closed
					Access
					Door
					Safety
			Floor must be level		Reversing
	Safety				Sensor
	Reversing		across width of door
	Sensor
			Closed Position
			Chain	Chain	Trolley
			Pulley
			Bracket
Header
Wall	Header			Curved
	Bracket			Door Arm	T-rail
			Door		Manual Release
				Straight	Rope & Handle
		Bracket
Door				Door Arm

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

5

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 shown on page 7.

				(Models 1260-266 &	(All Models except
	(Models 1260,	1260-266,	(Models 1256, 1255, 1255-266,	1255-266 (2)
					1256 & 1246)
	1260-166, 1250	&1250-266)	1255-166, 1246, 1245, 1245-266, & 1240)	All Other Models (1))

LOCK

LIGHT

Lighted Door Control Button

Multi-Function Door w/6ABx1-1/2" screws

Control Panel

(Models 1260, 1260-266,	(Models 1260-266, 1260-166, 1255-266,
1260-166, 1250 & 1250-266)	1255-166, 1250-266 & 1245-266 only)

Keyless Entry

Light Lens (2)

(Models 1256, 1255, 1255-266, 1255-166, 1246, 1245, & 1245-266)

Trolley

Light Lens (1)

Chain

Pulley Bracket

ONLY

MOUNT

CEILING

UP

Header Bracket	2-Conductor Bell Wire
	White & White/Red

"C" Wrap (2)

Safety Reversing Sensor

Mounting Bracket

With Square Holes (2)

Safety Reversing Sensor (2)

(1) Sending Eye

(1) Receiving Eye

Safety Reversing Sensor

Mounting Bracket

With Slot (2)

		Sprocket Cover
	Remote Control
	Transmitter	Styrofoam
	with 12V battery

Chain

Remote Control

Transmitter Visor Clip

(Models 1256 & 1246 only)

One-Piece

T-rail

Chain Spreader with

Screws and Washers

Door Bracket Plate

Door Bracket

Curved Door

Arm Section

Safety Labels

and

Literature

Straight Door

Arm Section

2 Conductor Bell Wire with Connector White & White/Black (2 rolls)

6

Group all hardware found in all packages contained in the opener carton into the two kits illustrated below.

	Installation Hardware Kit # 41A2770
					GREASE
					RAIL .83A4
					NO
Hex Screw
5/16"-18x7/8" (4)	Nut 5/16"-18 (6)		Lock Washer 5/16" (6)		Rail Grease
Lag Screw		Screw	NOTICE		Ring Fastener (3)
5/16"-18 x1-7/8" (4)		6ABx1" (2)
			Handle
Carriage Bolt		Insulated Staples (10)
5/16"-18x2-1/2" (2)
					Dry Wall Anchors (2)
Clevis Pin			Clevis Pin		Rope
5/16"x2-3/4" (1)			5/16"x1"	(2)

Safety Reversing Sensor

Installation Hardware Kit #41A4116

Lag Screw	Carriage Bolts	Lock Nut	Wing Nut (2)
1/4x1-1/2" (4)
	1/4"-20x1/2" (4)	1/4"-20 (4)

Hex Screw	Screw	Lock Nut	Insulated
1/4-20x1-1/2" (2)	#10-32 x3/8" (4)	#10x32 (4)	Staples (20)

7

Assembly Step 1

Attach the T-rail to the Opener

For Models 1260, 1260-266, 1255,1255-266, 1250, 1250-266, 1245, 1245-266 and 1240

CAUTION

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

See page 9 for Models 1256 and 1246.

•Remove the two washered screws mounted in top of opener

•Align T-rail at an angle with opener so one hole in T-rail and opener line up.

•Thread one of the washered screws part way in.

Use only these screws! Use of any other screws will cause serious damage to door opener.

•Align T-rail and styrofoam over opener sprocket. Cut tape from T-rail, chain and styrofoam.

•REMOVE STYROFOAM.

	USE ONLY THIS
	TYPE AND SIZE	Washered Screw
	SCREW
		5/16"-18x1/2"

Styrofoam

T-rail

Hole

Chain

Assembly Step 2

Attach Chain to Sprocket and

Install Sprocket Cover

For Models 1260, 1260-266, 1255,1255-266, 1250, 1250-266, 1245, 1245-266 and 1240

•Position chain over the opener sprocket. If necessary, loosen the outer nut on the trolley to obtain more chain slack.

•Insert the second washered screw.

CAUTION: Use only the screw previously removed from opener!

•Tighten both screws securely through the T-rail into the opener as shown.

Install the sprocket cover:

•Insert the back tab in the opener slot. Squeeze the cover slightly and insert the front tab in the slot on the mounting plate.

Sprocket

Cover

Back Tab Slot

Top of Opener

Front Tab Slot

Mounting

Plate

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.

	USE ONLY THIS	Washered Screw
	TYPE AND SIZE	5/16"-18x1/2"
	SCREW	Opener
		Sprocket

Proceed to Assembly Step 3, page 11.

8

Assembly Step 1

Attach the T-rail to the Opener

For Models 1256 and 1246 only

•Place the opener on packing material to protect the cover.

•Remove the (2) 5/16"-18x1/2" washered screws mounted in the top of the opener.

•Align T-rail and styrofoam over opener sprocket.

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.

Styrofoam

Packaging

Chain

T-rail

Washered

Screws

5/16"-18x1/2"

USE ONLY THIS TYPE AND SIZE SCREW

Opener

Sprocket

•Cut tape from T-rail, chain and styrofoam. Remove styrofoam and pull the chain back (away from mounting plate)

•Fasten the rail with the (2) washered screws previously removed. Tighten securely.

Remember to use only these screws! Any other screws will cause serious damage to the opener.

USE ONLY THIS

	TYPE AND SIZE	Washered Screws
		5/16"-18x1/2"	Mounting
	SCREW
			Plate

Chain

T-rail

Styrofoam

Packaging

Opener

Chassis

9

Assembly Step 2

Attach the Chain Spreader

and Re-install the Chain

For Models 1256 and 1246 only

•Line up the holes in the chain spreader with the holes in the opener as shown. The slot in the chain spreader must fit over the T-rail flange.

•Securely fasten the chain spreader with the hardware provided.

•Remove the trolley threaded shaft from the trolley by loosening the inner nut and lock washer.

•Guide the chain around the selected groove in the chain spreader (to engage either the

8-tooth sprocket or the 6-tooth sprocket) as shown.

•Continue dispensing the chain forward to the trolley. Reconnect the trolley to the trolley threaded shaft. Proceed to page 11 for chain tightening instructions.

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.

	USE ONLY	#8x1"
		Hex Screw
	THIS TYPE
		Washers
	AND SIZE
	SCREW	Chain
		Spreader
		Slot
		T-rail
		Flange

Outer

Inner Nut

Trolley

Threaded

Nut

and Washer

Shaft

T-rail

Trolley

Chain

Spreader 8-Tooth

Sprocket

Opener

Mounting Plate

Chain

Spreader 6-Tooth

Sprocket

Opener

Mounting Plate

Install Chain

In This Direction

Chain

Spreader Opener

Sprocket

Chain

10

Assembly Step 3

Tighten the Chain

(All Models)

•Spin the inner nut and lock washer down the threaded shaft, away from the trolley.

•To tighten the chain, turn outer nut in the direction shown. As you turn the nut, keep the chain from twisting.

•When the chain is approximately 1/2" above the base of the T-rail at its midpoint, re-tighten the inner nut to secure the adjustment.

Sprocket noise can result if chain is either too loose or too tight.

When installation is complete, you may notice some chain droop with the door closed. This is normal. If the chain returns to the position shown when the door is open, do not re-adjust the chain.

NOTE: During future maintenance, ALWAYS pull the manual release handle to disconnect trolley before adjusting chain.

Outer Nut	Lock
	Washer

Inner Nut

To Tighten Outer Nut

To Tighten

Inner Nut

Trolley

Chain

1/2"

Base of T-rail

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 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.

11

	Installation Section: Pages 12 – 27
Installation Step 1				WARNING
Determine Header Bracket Location
Installation procedures vary according to garage			If the header bracket is not rigidly fastened to
door types. Follow the instructions which apply to			a structural support on the header wall or
your door.			ceiling, the safety reverse system may not
			work properly (see page 30). The door might
			not reverse when required, and could cause
			serious injury or death.
	SECTIONAL Doors and		The garage door springs, cables, pulleys,
	ONE-PIECE Door With Track		brackets and their hardware are under extreme
			tension. Do not attempt to loosen, move or
			adjust them yourself. Serious personal injury
		Finished	or death could result. Call for garage door
	Vertical		service.
		Ceiling
Header	Guideline
Wall	2x4
			Structural	• Close the door and mark the inside
			Supports	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 only if
	Vertical			a torsion spring or center bearing
				plate is in the way; or you can attach
	Guideline
				it to the ceiling (refer to page 14)
				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 13.

•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
Header
Wall	Track
2"
Highest Point
of Travel
Door

	Header
	Wall	Track
	2"
	Highest Point
	of Travel
	Door

Sectional door with	One-piece door with
curved track	horizontal track

Proceed to Step 2, page 14.

12