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®

Garage Door OpenerModel 8100CM

1/2 HPFor 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 andproperly 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 panelof your opener.

Start by reviewing these important safety alert symbols:

2

Contents PageA review of safety alert symbols . . . . . . . . . . . . . .2You'll need tools . . . . . . . . . . . . . . . . . . . . . . . . . . .3Safety information regarding garage doorlocks and ropes . . . . . . . . . . . . . . . . . . . . . . . . . .3

Testing your garage door for sticking,binding and balance . . . . . . . . . . . . . . . . . . . . . . .3

Illustration of sectional door installation . . . . . . . .4Illustration of one-piece door installation . . . . . . . .5Carton inventory . . . . . . . . . . . . . . . . . . . . . . . . . . .6Hardware inventory . . . . . . . . . . . . . . . . . . . . . . . .7Assembly section – pages 8 - 11

Assemble T-rail . . . . . . . . . . . . . . . . . . . . . . . . . .8Attach belt pulley bracket . . . . . . . . . . . . . . . . . . .8Install trolley . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9Fasten T-rail to opener . . . . . . . . . . . . . . . . . . . . .9Install belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10Set the belt tension . . . . . . . . . . . . . . . . . . . . . .10Attach belt cap retainer . . . . . . . . . . . . . . . . . . .11

Installation section – pages 11 - 27Installation safety instructions . . . . . . . . . . . . . .11Determine header bracket locationSectional door . . . . . . . . . . . . . . . . . . . . . . . . .12One-piece door . . . . . . . . . . . . . . . . . . . . . . . .13

Install the header bracket . . . . . . . . . . . . . . . . . .14Attach the T-rail to header bracket . . . . . . . . . . .15Position the opener . . . . . . . . . . . . . . . . . . . . . .16Hang the opener . . . . . . . . . . . . . . . . . . . . . . . .17Install the door control . . . . . . . . . . . . . . . . . . . .18

Contents PageInstall the lights and lenses . . . . . . . . . . . . . . . .19Attach manual release rope and handle . . . . . .19Electrical requirements . . . . . . . . . . . . . . . . . . .20The Protector System® safety reversing sensorinformation . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Install the safety reversing sensor . . . . . . . .22, 23Fasten door bracket (sectional door) . . . . . . . . .24Fasten door bracket (one-piece door) . . . . . . . .25Connect door arm to trolley (sectional door) . . .26Connect door arm to trolley (one-piece door) . .27

Adjustment section – pages 28 - 30Travel limit adjustments . . . . . . . . . . . . . . . . . . .28Force adjustments . . . . . . . . . . . . . . . . . . . . . . .29Test the Protector System® . . . . . . . . . . . . . . . .30Test the safety reverse system . . . . . . . . . . . . .30

Operation safety instructions . . . . . . . . . . . . . . . .31Care of your opener . . . . . . . . . . . . . . . . . . . . . . .31Maintenance schedule . . . . . . . . . . . . . . . . . . . . .31Operation of your opener . . . . . . . . . . . . . . . . . . .32Receiver and remote control programming . . . . .33Having a problem? . . . . . . . . . . . . . . . . . . . . .34, 35Repair parts, rail assembly . . . . . . . . . . . . . . . . .36Repair parts, installation . . . . . . . . . . . . . . . . . . .36Repair parts, opener assembly . . . . . . . . . . . . . .37Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39How to order repair parts . . . . . . . . . . . . . . . . . . .40Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

When you see these Safety Symbols on the following pages, they will alert you to the possibility ofserious injury or death if you do not comply with the corresponding instructions. The hazard maycome 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 damageto your garage door and/or the garage door opener if you do not comply with the correspondinginstructions. 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 WARNING

CAUTION

Pliers

Wire Cutters

Claw Hammer

Hack Saw

ScrewdriverAdjustable End Wrench

1/2" and 7/16" Socketsand Wrench

Drill

Tape Measure

21

Stepladder

Pencil

3/16", 5/16" and5/32" Drill Bits

Carpenter'sLevel

You'll Need ToolsDuring assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.

SECTIONAL DOOR ONE-PIECE DOOR

3

An unbalanced garage door might not reversewhen required and someone under the doorcould be seriously injured or killed. If your garage door binds, sticks or is out ofbalance, call for professional garage doorservice. Garage doors, door springs, cables,pulleys, brackets and their hardware are underextreme tension and can cause serious injuryor death. Do not try to loosen, move or adjustthem yourself!Ropes left on a garage door could causesomeone to become entangled and killed.Remove all ropes connected to the door beforeinstalling and operating the opener.

To avoid damage to the garage door andopener, disable locks before installing andoperating the opener. Use a wood screw or nailto hold locks in the "open" (unlocked)position.Operation at other than 120V 60 Hz will causeopener malfunction and damage.

Identify the type and height of your door and anyspecial conditions that exist and any additionalmaterials that may be required by referring to the listson pages 4 or 5.

WARNING CAUTION

Before you begin, complete the following test tomake sure your door is balanced, and is notsticking or binding:• Lift the door about halfway as shown. Release the

door. It should stay in place, supported entirely byits springs.

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

4

Safety Reversing Sensor

Horizontal and vertical reinforcementis needed for lightweight garage doors

(fiberglass, steel, aluminum, door with glass panels, etc.).See page 24 for details.

Support bracket & fastening hardware

is required.See page 17.

— —

— —

— —

— —

Door Center

Header Wall

SafetyReversing

Sensor

Floor must be levelacross width of door

FINISHED CEILING

Extension Spring

Torsion Spring

Access Door

OR

Slack in belt tensionis normal when

garage door is closed.

Before you begin, survey your garage area tosee whether any of the conditions below applyto your installation.

Based on your particular requirements, there areseveral installation steps which might call formaterials and/or hardware not included in thecarton.

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

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

• Safety reversing sensor, page 21 - Dependingupon garage construction, wood blocks may needto be fastened to mounting locations beforesensors are installed.

• Step 10, page 22 - Alternate floor mounting of thesafety reversing sensor will require hardware notprovided.

• Step 11, page 24 - Do you have a steel, aluminum,fiberglass or glass panel door? If so, horizontaland 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 notwork properly. See page 30. Floor or door shouldbe repaired.

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

SECTIONAL Door Installation

• The opener can be installed within 2 feet of the leftor right of the door center if there is a torsion springor center bearing plate in the way of the headerbracket or door bracket area. If your door hasextension 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 thegarage door? If not, Model 7702C Outside QuickRelease is required. See page 38.

You may find it helpful to refer back to this pageas you proceed with the installation of youropener.

Belt PulleyBracket

HeaderBracket

Trolley

StraightDoorArm Manual

ReleaseRope & Handle

Door Bracket Garage

Door

CurvedDoorArm

GarageDoor

Spring

HeaderWall

Closed Position

Belt

SafetyReversing Sensor

HeaderBracket

Trolley

StraightDoorArm

ManualRelease

Rope & Handle

DoorBracket

CurvedDoorArm

HeaderWall

Belt

Slack in Belt Tensionis Normal When

Garage Door is Closed

T-rail

GarageDoor

HeaderWall

SafetyReversing

Sensor

Access Door

Gap between floor and bottom ofdoor must not exceed 1/4"

FINISHED CEILINGSupport bracket

& fasteninghardware is required.

See page 17.

Closed PositionBelt

Pulley Bracket

5

Before you begin, survey your garage area tosee whether any of the conditions below applyto your installation.

Based on your particular requirements, there areseveral installation steps which might call formaterials and/or hardware not included in the carton.• Step 1, page 13 - Look at the wall or ceiling above

the garage door. The header bracket must besecurely fastened to structural supports.

• Step 5, page 17 - Do you have a finished ceiling inyour garage? If so, a support bracket andadditional fastening hardware (not supplied) maybe required.

• Safety reversing sensor, page 21 - Depending ongarage construction, wood blocks may need to besecurely fastened to mounting locations beforesensors are installed.

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

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

• Step 11, page 25 - Depending on your door'sconstruction, you might need additional mountinghardware for the door bracket.

• Do you have an access door in addition to thegarage door? If not, Model 7702C Outside QuickRelease is required. See page 38.

• The gap between the bottom of the garage doorand the floor cannot exceed 1/4". Otherwise,the safety reverse system may not workproperly. See page 30. The floor or the doorshould be repaired.

ONE-PIECE Door Installation

You may find it helpful to refer back to this pageas you proceed with the installation of youropener.

One-Piece Door without Track

AccessDoor

Floor must be levelacross width of doorSafety

ReversingSensor

HeaderBracket

BeltPulley Bracket

DoorBracket

StraightDoorArm

CurvedDoor Arm

Trolley

Manual ReleaseRope & Handle

HeaderWall

T-rail

GarageDoor

Belt

SafetyReversing

Sensor

Slack in Belt Tensionis Normal When

Garage Door is Closed

Closed Position

One-Piece Door with Track

Multi-FunctionRemote Control Transmitter

2-Conductor Bell WireWhite & White/Red

TrolleyDoor Bracket

Door BracketPlate

Header Bracket

Hanging Brackets

Belt

Curved DoorArm Section

Straight DoorArm Section

Safety Labelsand

Literature

Safety Reversing SensorMounting Bracket

With Square Holes (2)"C" Wrap (2)

Safety Reversing SensorMounting Bracket

With Slot (2)

Light Lens

Rail Brace (3)

T-railCenter Section

(each) (2)

T-railEnd Section (2)

UPCEILING MOUNT ONLY

LIGHT

LOCK

Multi-FunctionDoor Control Panel

Belt PulleyBracket

Belt Cap Retainer

Keyless Entry

(2) Safety Reversing Sensors(1 Sending Eye and 1 Receiving Eye)

with2-Conductor White & White/Black Bell Wire

attached

6

Opener Carton InventoryYour garage door opener is packaged in one carton which contains all parts illustrated below. If anything ismissing, carefully check the packing material. Parts may be "stuck" in the foam. Hardware for assembly andinstallation is shown on page 7.

7

Group all hardware found in all packages contained in the rail and opener cartons intothe three kits illustrated below.

8

Assembly Step 1Assemble the T-rail &Attach the Belt Pulley Bracket

T-RAIL BACK (TO OPENER)

T-RAIL FRONT (TO DOOR)

Belt pulley bracketattaches to FRONT

END of T-rail T-rail(End Section)

T-rail(Center Section)

Carriage Bolt1/4"-20x1/2"

T-rail(End Section)

Square CarriageBolt Hole

1/4" Lock Nut

Hex Screws5/16"-18x7/8"

Belt PulleyBracket

Bracket & Rail M

ust Be Aligned

Lock Washer5/16"

Nut5/16"-18

Make sure boltnecks are seatedin the squareholes and railsare aligned

before youtighten lock nuts.

(See right andwrong views).

Improperassembly cancause jerkytrolleyoperation, noise

and/or nuisancedoor reversals.

Assembly Section: Pages 8 – 11

When tighteningthe screws, besure to keepbracket parallelto the rail.Otherwise, the

rail may bow whenthe opener isoperated.Right Wrong

• Align the 4 T-rail sections on a flat surfaceexactly as shown. Center sections areinterchangeable. Front and back sections arealso interchangeable for ease of assembly.

• Insert the carriage bolts so the square boltnecks seat in the square holes in the T-railsections and pass through the round holes inthe rail braces. Assemble lock nuts, ensurealignment and tighten.

If T-rail is not assembledexactly as shown, trolleywill not travel smoothlyalong length of rail or itwill hit against nuts.

• Position the belt pulley bracket on the front end ofthe T-rail as shown. Fasten securely with thehardware shown.

Right

Wrong

Lock Nut1/4"-20

Carriage Bolts1/4"-20x1/2"

Hex Screw5/16"-18x7/8"

Nut5/16"-18

Lock Washer5/16"

Hardware Shown Actual Size

To avoid installation difficulties, do notrun the garage door opener untilinstructed to do so.

Assembly Step 2Install the Trolley on the T-rail

9

• As a temporary stop, insert a screwdriver into thehole in the front end of the T-rail.

• Slide the trolley assembly along the rail to thescrewdriver stop.

If trolley hits against any nuts on the T-rail, thebolts and nuts were attached from the wrong side and must be repositioned. Review Step 1.

• Insert a 5/16"-18x7/8" hex screw into the trolleystop hole in the T-rail as shown. Tighten securelywith a 5/16" lock washer and nut. This screw limitstrolley travel in the DOWN direction.

Temporary StopScrewdriver

Trolley

Hex Screws# 8 x 3/8"

Belt CapRetainer

Assembly Step 3Faster the T-rail to the Opener

• Place the opener on packing material to protectthe cover. For convenience, put a support underthe belt pulley bracket.

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

• Align the holes in the back section of the T-rail withthe holes in the opener.

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

Remember to use only these screws! Any otherscrews will cause serious damage to the opener.• Insert a 5/16"-18x7/8" hex screw into the trolley

stop hole in the T-rail as shown. Tighten securelywith a 5/16" lock washer and nut. This screw limitstrolley travel in the UP direction.

Washered Screw5/16"-18x1/2"

USE ONLY THISTYPE AND SIZE

SCREW

T-Rail(Back Section)

TrolleyStop Hole

Nut5/16"-18


Lock Washer5/16"

To fasten rail, use only those screws mountedin the top of the opener. Any other screws willcause serious damage to the opener.

Nut5/16"-18

Lock Washer5/16"



CAUTION


TrolleyStop Hole

Lock Washer5/16"

Nut 5/16"-18

Assembly Step 4Install the Belt & Set the Belt Tension

Serious injury can result if fingers becomeentangled in moving opener sprocket. Attachbelt cap retainer securely. Never operateopener while your hand is near the openersprocket.

10

• Drop the notched side of the trolley clip into theretaining slot on top of the trolley (see Figure 1).

• Grasp the clip connector at the end ofthe belt and slip it through the beltpulley bracket from behind, aroundthe pulley and toward the trolley.

• Fasten the belt clip connector to thetrolley clip with a master link:

a. Push pins of master link bar through holes introlley clip and belt clip connector.

b. Push master link cap over pins andpast pin notches.

c. Slide clip-on spring over cap andonto pin notches until both pins aresecurely locked in place.

• With the trolley against the screwdriver,dispense the belt along the rail and around theopener sprocket. The sprocket teeth mustengage the belt (Figure 2).

• Use the second master link to connect the beltto the flat end of the trolley threaded shaft (Figure1). Check to make sure the belt is not twisted.

• Remove the screwdriver.

Figure 2

Figure 1

Figure 4

• Insert a screwdriver tip into one of the nut ring slotsand brace it firmly against the trolley. (Figure 4)

• Place a 7/16" open end wrench on the square end.Rotate about 1/4 turn until the spring releases andsnaps the nut ring against the trolley (Figure 5).

This extends the spring for optimum belt tension.

• Insert the trolley threaded shaft through the hole inthe trolley.

• Hold the belt at the trolley shaft to avoid twistingas you thread the spring/trolley nut by hand on theshaft until finger tight against the trolley (Figure 3).Do not use any tools.

Figure 5Figure 3

Hex Screws#8x3/8"

Belt CapRetainer

Opener Sprocket

Mounting Plate

Belt

Assembly Step 5Attach 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 doormay not reverse and could result in severe injury or death. Repairs to cables, spring assembliesand 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 handlemounted 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 smallchildren 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 theMaintenance 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 2x4laid flat on the floor.

9. Do not wear watches, rings or loose clothing while installing or servicing an opener. Jewelry orloose clothing can be caught in the mechanism of the garage door or the opener.

11

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

WARNING WARNING

To attach the belt cap retainer:• Position the belt cap retainer over the opener

sprocket so the two holes in cap align with the twoholes in mounting plate. Attach with 8x3/8" hexscrews provided.

Hex Screw #8x3/8"


• Open your door to the highestpoint of travel as shown. Drawan intersecting horizontal lineon the header wall 2" abovethe high point. This height willprovide travel clearance for thetop edge of the door.

HeaderWall

Ceiling

Track

Highest Pointof Travel

Door

2"

12

Proceed to Step 2, page 14.

Door

Track

HeaderWall

Highest Pointof Travel

2"

VerticalGuideline

FinishedCeilingVertical

GuidelineHeaderWall

2x4StructuralSupports

SECTIONAL Door and ONE-PIECE Door With Track

• Close the door and mark the insidevertical centerline of the garage door.

• Extend the line onto the header wallabove the door.

Remember, you can fasten theheader bracket within 2 feet to theleft or right of the door center only ifa torsion spring or center bearingplate is in the way; or you can attachit to the ceiling (refer to page 14)when clearance is minimal. (It maybe mounted on the wall upside downif necessary, to gain approximately1/2".)If you need to install the header bracketon a 2x4 (on wall or ceiling), use lagscrews (not supplied) to securely fastenthe 2x4 to structural supports as shownhere and on page 13.

Installation Section: Pages 12 – 27

Sectional doorwith curved track

One-piece doorwith horizontal track

Installation Step 1Determine Header Bracket LocationInstallation procedures vary according to garagedoor types. Follow the instructions which apply toyour door.

If the header bracket is not rigidly fastened toa structural support on the header wall orceiling, the safety reverse system may notwork properly (see page 30). The door mightnot reverse when required, and could causeserious injury or death.The garage door springs, cables, pulleys,brackets and their hardware are under extremetension. Do not attempt to loosen, move oradjust them yourself. Serious personal injuryor death could result. Call for professionalgarage door service.

WARNING

Header WallVertical

Centerline

Vertical Centerline of Garage Door

2x4

Unfinished Ceiling

Structural Supports

2x4

OPTIONAL CEILING MOUNT FOR HEADER BRACKET

• Close the door and mark theinside vertical centerline ofyour garage door. Extend theline onto the header wall abovedoor.

If headroom clearance isminimal, you can install theheader bracket on the ceiling.See page 14.

• If you need to install theheader bracket on a 2x4 (onwall or ceiling), use lag screws(not supplied) to securelyfasten the 2x4 to structuralsupports as shown.

ExampleDistance 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 14.

13

Header Wall

Highest Point of Travel

Door

Dis

tanc

e

Jamb Hardware

Door

Highest Point of Travel

Header Wall

Pivot

Dis

tanc

e

ONE-PIECE Door Without Track

• Open your door to the highest point of travel asshown. Measure the distance from the top of thedoor to the floor. Subtract the actual height of thedoor. Add 8" to the remainder. (See Example.)

• Close the door and draw an intersecting horizontalline on the header wall at the determined height.

If the total number of inches exceeds the heightavailable in your garage, use the maximumheight possible, or refer to page 14 for ceilinginstallation.

One-piece door without trackpivot hardware

One-piece door without trackjamb hardware

Read the Safety Instructions on page 12. They also apply to doors without tracks.

14

You can attach the header bracket either to thewall above the garage door, or to the ceiling.Follow the instructions which will work best foryour particular requirements.

Fasten the Header Bracket to the Wall

• Center the bracket on the vertical guideline withthe bottom edge of the bracket on the horizontalline as shown (with the arrow pointing toward theceiling).

• Mark either set of bracket holes (do not use theholes designated for ceiling mount). Drill 3/16" pilotholes and fasten the bracket securely to a structuralsupport with the hardware provided.

Fasten the Header Bracket to the Ceiling

Installation Step 2Install the Header Bracket


• Extend the vertical guideline onto the ceiling asshown.

• Center the bracket on the vertical mark, no morethan 6" from the wall. Make sure the arrow ispointing toward the wall. The bracket can bemounted flush against the ceiling when clearanceis minimal.

• Mark holes designated for ceiling mount only. Drill3/16" pilot holes and fasten bracket securely to astructural support with the hardware provided.

HeaderBracket

Belt PulleyBracket

TemporarySupport

Header Wall

GarageDoor

The Chamberlain Group, Inc.Liftmaster Synchro DriveAttach Tee Rail to Header Bra5/16/92

T-rail

Clevis Pin5/16"x2-3/4 "

Ring Fastener

Header Bracket

Belt PulleyBracket

T-rail

• Position the opener on the garage floor below theheader bracket. Use packing material as aprotective base.

If the door spring is in the way you'll need help.Have someone hold the opener securely on atemporary support to allow the T-rail to clearthe spring.• Position the belt pulley bracket against the header

bracket.

• Align the bracket holes and join with a clevis pinas shown.

• Insert a ring fastener to secure.

15

Installation Step 3Attach the T-rail to the Header Bracket

Clevis Pin 5/16" x 2-3/4" Ring Fastener


Installation Step 4Position the OpenerFollow instructions which apply to your door typeas illustrated.

To prevent damage to steel, aluminum,fiberglass or glass panel doors, do not rest theopener on the door without using a 2x4.

SECTIONAL Door & ONE-PIECE Door with Track

A 2x4 laid flat is convenient for setting an idealdoor-to-T-rail distance. • Raise the opener onto a stepladder.

You will need help at this point if the ladder isnot tall enough. • Open the door all the way and place a 2x4 laid flat

on the top section beneath the T-rail.

If the top panel hits the trolley when you raisethe door, pull down on the trolley release arm todisconnect the inner and outer sections. Thetrolley can remain disconnected until Step 12 iscompleted.

T-rail 2x4

Door

Stepladder

Top of Opener

HeaderBracket

Top of Door

Stepladder

ONE-PIECE Door without Track

• With the door fully open and parallel to the floor,measure the distance from the floor to the top ofthe door.

• Using a stepladder as a support, raise the openerto the same distance as the door from the floor (itwill be at a slight angle as shown).

• The top of the door should be level with the top ofthe opener. Do not position the opener more than2" above this point.

16

CAUTION

Trolley

Trolley Release Arm

Installation Step 5Hang the Opener

Two representative installations are shown.Yours may be different. Hanging brackets shouldbe angled, Figure 1, to provide rigid support. Onfinished ceilings, Figure 2, attach a sturdy metalbracket to structural supports before installing theopener. The bracket and fastening hardware are notsupplied.

• Measure the distance from each side of the openerto the structural support.

• Cut both pieces of the hanging bracket to requiredlengths.

• Drill 3/16" pilot holes in the structural supports.

• Attach one end of each bracket to a support with5/16"x1-7/8" lag screws.

• Fasten the opener to the hanging brackets with5/16"-18x7/8" hex screws, lock washers and nuts.

• Check to make sure the T-rail is centered over thedoor (or in line with the header bracket if thebracket is not centered above the door).

• Remove the 2x4. Operate the door manually. If thedoor hits the rail, raise the header bracket.

Measure Distance

Lag Screws 5/16"x1-7/8"

5/16"-18x7/8" Hex Screws

5/16" Lock Washers 5/16"-18 Nuts

Structural Supports

Bracket (Not Supplied)

Lag Screws 5/16"x1-7/8"

(Not Supplied) 5/16"-18x7/8" Screw 5/16" Lock Washer

5/16"-18 Nut

— FINISHED CEILING —

Hidden Support

5/16"-18x7/8" Screw 5/16" Lock Washer

5/16"-18 Nut

17

The opener could fall and injure someone if itis not properly secured. Fasten the openersecurely to structural supports of the garage.

Figure 1

Figure 2

Lag Screw5/16"-18x1-7/8"

Hex Screw5/16"-18x7/8" Nut 5/16"-18 Lock Washer 5/16"


WARNING

Grease the top andunderside of therail surfacewhere the trolleyslides with rail grease.

RAIL GREASE

NO. 83A4

OpenerTerminal Screws

Antenna

Right Panelof Opener

Multi-FunctionDoor Control Panel

Multi-FunctionDoor Control PanelTerminal Screws

RED WHITE

The Chamberlain Group, Inc.Liftmaster Belt Drive CDOInstall Wall Control3/5/92 - 3/13/92

LIGHT

LOCK

Door ControlButton

Light Button

Lock Button

KG KG

1

3

9

7

5

1

3

9

7

5

2 31

1 2

Installation Step 6Install the Multi-FunctionDoor Control Panel

18

Children operating or playing with a garagedoor opener can injure themselves or others.The garage door could close and causeserious injury or death. Install the door control(or any additional push buttons) out of thereach of children and away from all movingparts of the door and door hardware, butwhere the garage door is visible. Do not allowchildren to operate the push button(s) or theremote control transmitter(s).A moving garage door could injure someoneunder it. Activate the opener only when thedoor is properly adjusted, you can see it clearly,and there are no obstructions to door travel.

• Strip 1/4" of insulation from one end of the bellwire; connect the wire to the two screw terminalson the back of the door control by color: white to 2and white/red to 1.

• Locate the door control within sight of the doorat a minimum height of 5 feet where smallchildren cannot reach, and away from allmoving parts of the door and door hardware.Fasten the Multi-Function Door Control securelywith 6ABx1" screws. If installing into drywall, drill5/32" holes and use the anchors provided.

• Run the bell wire up the wall and across the ceilingto the opener. Use insulated staples to secure thewire in several places. Be careful not to pierce thewire with a staple, creating a short.

• Receiver terminal screws and the antenna arelocated on the right panel of the opener. Positionthe antenna wire as shown.

• Then connect the bell wire to the opener terminalscrews: white to 2 and white/red to 1.

• Remember to affix the User Safety Instructionlabel to the wall near the door control, and theMaintenance Instruction label in a prominentlocation on the inside of the garage door.

If the label adhesive will not adhere to your garagewall surface (or becomes loose with time) use tacksto secure the label alongside the door control.

Page 32 explains how to operate the opener usingthe lighted push button and the Lock & Lightfeatures available on the Multi-Function DoorControl Panel.

Dry Wall AnchorsInsulated Staples

6AB x 1" ScrewMulti-Function Door Control


Outside Keylock Accessory Connections

To opener terminal screws: white to 2; white/red to 1

WARNING

Do NOT connect the power and operate theopener at this time. The trolley will travel to thefull open position but will not return to theclose position until the sensor beam isconnected and properly aligned.See Safety Reversing Sensor Instructionsbeginning on page 21.

• Install a 75 watt maximum light bulb in eachsocket. The lights will turn ON and remain lit forapproximately 4-1/2 minutes when power isconnected. Then the lights will turn OFF.

• If the bulbs burn out prematurely due to vibration,replace them with "Garage Door Opener" bulbs.

• Slide lenses into guides as shown. Snap bottomtabs into lens slots.

• For convenience, the lenses may be installedafter Adjustment Step 4 on page 30.

• Reverse the procedure to remove the lenses.

Installation Step 7Install the Lights and the Lenses

Installation Step 8Attach the Manual Release Rope and Handle Do not use the red handle to pull the door

open or closed. The rope knot could becomeuntied and you could fall. Use the manualrelease only to disengage the trolley and, ifpossible, only when the door is closed.Garage doors are heavy. If the door is openwhen the handle is pulled, the door couldclose inadvertently if it is not properlybalanced. Serious injury may result to personsunder the door. Make sure the doorway is clearof persons and obstructions before pullinghandle when door is open.

• Thread one end of the rope through the hole in thetop of the red handle so "NOTICE" reads right sideup as shown. Secure with an overhand knot.

The knot should be at least 1" from the end ofthe rope to prevent slipping.• Thread the other end of the rope through the hole

in the release arm of the outer trolley.

• Adjust rope length so the handle is 6 feet abovethe floor. Secure with an overhand knot .

If it is necessary to cut the rope, heat seal thecut end with a match or lighter to preventunraveling.

Trolley

NOTICE

OverhandKnot

ManualRelease Handle

Rope

OverhandKnot

TrolleyRelease Arm

19

75 WattMaximumLight Bulb

LensGuide

LensTab

Lens Slot

Lens Tab

75 WattMaximumLight Bulb

WARNING

To prevent electrocution, remove power fromthe garage door opener and from the circuityou plan to use for the permanent connection.

To reduce the risk of electric shock, your garagedoor opener has a grounding type plug with a thirdgrounding pin. This plug will only fit into a groundingtype outlet.

If the plug doesn't fit into the outlet you have,contact a qualified electrician to install the propertype outlet.

Installation Step 9Electrical Requirements

Ground Tab

GreenGroundScrew

Ground Wire

BlackWire

Permanent wiring connection

White Wire

BlackWire

• To make a permanent connection through the7/8" diameter hole in the top of the opener(according to local code):

• Remove the opener cover screws and set thecover aside.

• Remove the attached 3-prong cord.

• Connect the black (line) wire to the screw on thebrass terminal; the white (neutral) wire to thescrew on the silver terminal; and the ground wireto the green ground screw. The opener must begrounded.

• Reinstall the cover.

20

To prevent electrocution or fire, installationand wiring must be in compliance with localelectrical and building codes.Do NOT use an extension cord, 2-wire adapter,or change the plug in any way to make it fityour outlet.

Right Wrong

To avoid installation difficulties, do not run the opener at this time.

To avoid installation difficulties,do not run the opener at this time.

If permanent wiring is required by your local code, refer to the following procedure:

WARNING

WARNING

Without a properly working safety reversingsensor, persons (particularly children) couldbe injured or killed by a closing garage door.Read and follow all instructions.To protect small children, install the safetyreversing sensor so that the beam will be nohigher than 4"-6" above the garage floor.Disconnect power to the garage door openerbefore installing the safety reversing sensor.

The safety reversing sensor must be connectedand aligned correctly before the garage dooropener will move in the down direction. This is arequired safety device and cannot be disabled.

Installation procedures are the same for sectionaland one-piece doors.

Invisible Light BeamProtection Area

Sensor Beam4-6" max.

above floor

Sensor Beam4-6" max.

above floor

Figure 1: Facing the door from inside the garage

The brackets must be securely fastened to a solidsurface such as the studs on either side of the door,or add a piece of wood at each location if installing inmasonry construction.

The invisible light beam path must be unobstructed.No part of the garage door (or door tracks, springs,hinges, rollers or other hardware) can interrupt thebeam while the door is closing. If it does, use a pieceof wood to build out each sensor mounting location tothe minimum depth required for light beam clearance.

21

The Protector System®

Information you'll need before you begin the installation of the safety reversing sensor.

Be sure power to the opener is disconnected.The sending eye transmits an invisible light beam tothe receiving eye. The units can be installed oneither side of the garage door as long as the sunnever shines directly into the receiving eye lens.

Look at the label on the connector end of each caseto identify the sensors.

The brackets must be connected and fastened sothat the sending and receiving eyes face each otheras shown in Figure 1.

If an obstruction breaks the light beam while thegarage door is closing, the door will stop andreverse to full open position, and the opener lightswill flash for 5 seconds.

WARNING

1/4x1-1/2" Lag Screw

#10-32x3/8" Screw

1/4"-20 Lock Nut

#10x32 Lock Nut

Staples

1/4"-20x1/2" Carriage Bolts

Installation Step 10Install the Safety Reversing Sensor

Mounting BracketWith Square Holes

#10-32x3/8"Screws

"C" Wrap

#10-32Lock Nuts

Mounting Bracketwith Slot

1/4"-20Lock Nuts

1/4x1-1/2"Lag Screws

1/4-20x1/2" Carriage Bolts(with square shoulder)

InsideGarage

Wall

"C" Wrap

Mounting Bracketwith Square Holes

Garage WALL or DOOR TRACK Installation

Garage WALL Installation

Figures 2 and 3 show assembly of brackets and"C" wrap based on the recommended installation ofthe sensors on each side of the garage door asshown on page 21.

However, Figures 4 and 5 are variations which mayfit your installation requirements better. Make surethe wraps and brackets are aligned so thesensors will face each other across the garagedoor.• Fasten the "C" wraps to the mounting brackets

having square holes, using the hardware shownin Figure 2.

• Connect each assembly to a slotted bracket, usingthe hardware shown in Figure 3.

Note the alignment of the brackets for left andright sides of the door.• Finger tighten the lock nuts.

• Use bracket mounting holes as a template tolocate and drill (2) 3/16" diameter pilot holes onboth sides of the garage door, 4"-6" above thefloor but not exceeding 6". (See warning onpage 21.)

• Attach bracket assemblies with 1/4"x1-1/2" lagscrews as shown in Figure 3.

• Adjust right and left side bracket assemblies to thesame distance out from the mounting surface.Make sure all door hardware obstructions arecleared. Tighten the nuts securely.

"C" Wrap

InsideGarage

Wall


GarageFloor


Alternate Wall Mount

Sensorwith wire

Indicator Light

Indicator Light

InsideGarage

Wall

Alternate Floor Mount


Attach withconcrete anchors

(not provided)


"C" Wrap

Sensor with wire

GarageFloor

22


Figure 2

Figure 3

Figure 4 Figure 5

• Center each sensor unit in a "C" wrap with lensespointing toward each other across the door (seeFigure 6).

• Secure sensors with the hardware shown. Fingertighten the wing nut on the receiving eye to allow forfinal adjustment. Securely tighten the sending eyewing nut.

• Run the wires from both sensors to the opener.Use insulated staples to secure the wire to the walland ceiling.

• Strip 1/4" of insulation from each set of wires.Separate white and white/black wires sufficiently toconnect to the opener terminal screws: white to 2and white/black to 3.

Aligning the Safety Sensors• Plug in the opener. Green indicator lights in both

the sending and receiving eyes will glow steadily ifwiring connections and alignment are correct.

The sending eye indicator light will glow regardlessof alignment or obstruction. If the indicator light isoff, dim, or flickering in the receiving eye (and theinvisible light beam path is not obstructed),alignment is required.

• Loosen the sending eye wing nut and re-adjust,aiming directly at the receiving eye. Lock in place.

• Loosen the receiving eye wing nut and adjustsensor vertically and/or horizontally until it receivesthe sender’s beam. When the green indicator lightglows steadily, tighten the wing nut.

23

Trouble Shooting1. If the sending eye indicator light does not glow

steadily after installation, check for:

• Electric power to the opener.

• A short in the white or white/black wires. Thesecan occur under staples or at screw terminalconnections.

• Incorrect wiring between sensors and opener.

• An open wire (wire break).

2. If the sending eye indicator light glows steadily butthe receiving eye indicator light doesn't:

• Check alignment.

• Check for an open wire to the receiving eye.

3. If the receiving eye indicator light is dim, realigneither sensor.

NOTE: When the invisible beam path is obstructed ormisaligned while the door is closing, the door willreverse. If the door is already open, it will not close.The opener lights will flash 10 times. (If bulbs are notinstalled, 10 clicks are audible.) See page 21.


Figure 6

Installation Step 11Fasten Door Bracket

Follow instructions which apply to your door typeas illustrated below or on page 25.

To prevent damage to steel, aluminum,fiberglass or glass panel doors, alwaysreinforce the inside of the door both verticallyand horizontally with an angle iron.

A horizontal brace should be long enough to be secured to 2 vertical supports. A vertical brace shouldcover the height of the top panel. The illustration shows one piece of angle iron as the horizontal brace. For the vertical brace, 2 pieces ofangle iron are used to create a "U"-shaped support. The best solution is to check with your garage doormanufacturer for an opener installation door reinforcement kit.

• Center the door bracket on the previously markedvertical guideline used for the header bracketinstallation. Note correct UP placement, asstamped inside the bracket.

• Position the bracket on the face of the door withinthe following limits:

A) The top edge of the bracket 2"-4" below the topedge of the door.

B) The top edge of the bracket directly below anystructural support across the top of the door.

• Mark and drill 5/16" left and right fastening holes.Secure the bracket as shown in Figure 1 if there isvertical reinforcement.

If your installation doesn't require vertical reinforce-ment but does need top and bottom fastening holesfor the door bracket, fasten as shown in Figure 2.

24

SECTIONAL Door Installation Procedure

Figure 1

Figure 2


All ONE-PIECE Door Installation Procedure

• Center the bracket on the top of the door, in linewith the header bracket as shown. Mark holes.

• Drill 5/16" pilot holes and fasten the door bracketwith hardware supplied.

25

Please read and comply with the warnings and reinforcement instructions on page 24.They apply to one-piece doors also.


Installation Step 12 Connect Door Arm to TrolleyFollow instructions which apply to your door typeas illustrated below and on page 27.

Make sure garage door is fully closed. Pull the manual release handle to disconnect the outer trolleyfrom the inner trolley. Slide the outer trolley back (away from the door) about 2” as shown inFigures 1, 2 and 3.

Figure 2:• Bring arm sections together. Find two pairs of holes

that line up and join sections. Select holes as farapart as possible to increase door arm rigidity.

Ring Fastener

Door Bracket

Clevis PinCurved

Door Arm

Straight Door Arm

Clevis Pin

Inner Trolley

Outer Trolley

Lock Washers

5/16"

Nuts 5/16"-18

Door Bracket

Screws 5/16"-18x7/8"

Manual Release Handle

Rope

Figure 3:• If holes in curved arm are above holes in straight

arm, disconnect straight arm. Cut about 6" fromthe solid end. Reconnect to trolley with cut enddown as shown.

• Bring arm sections together.

• Find two pairs of holes that line up and join withscrews, lock washers and nuts.

Lock Washers

5/16"

Nuts 5/16"-18

Screws 5/16"-18x7/8"

Cut This End

Proceed to Adjustment Step 1, page 28. Trolley will re-engage automatically when the opener is operated.

26

Figure 1:• Fasten straight door arm section to outer trolley

with a clevis pin. Secure the connection with a ringfastener.

• Fasten curved section to the door bracket in thesame way as shown.

Figure 1 Figure 2

Figure 3

SECTIONAL Doors Only

Lock Washer 5/16"Nut 5/16"-18 Ring Fastener

Hex Screw 5/16"-18x7/8"

Clevis Pin 5/16"x1"


Hole Alignment Alternative

All ONE-PIECE Doors

Assemble the Door Arm:• Fasten the straight and curved door arm sections

together to the longest possible length (with a2 or 3 hole overlap).

• With the door closed, connect the straight doorarm section to the door bracket with a clevis pin.

• Secure with a ring fastener.

Nuts5/16"-18Lock

Washers5/16"

RingFastener

StraightDoor Arm

Screws5/16"-18x7/8"

DoorBracket

Clevis PinCurved

Door Arm

On one-piece doors, before connecting the door arm to the trolley the travel limits must be adjusted. Limitadjustment screws are located on the left side panel as shown on page 28. Follow adjustment proceduresbelow.

Fully OpenTrolley

Door ArmConnector Hole

Door ArmClosedDoor Open Door

Door withBackward Slant

Door ArmConnector Hole

Fully ClosedTrolley

Door Arm

Adjustment Procedures for One-Piece Doors

Open Door Adjustment:Decrease UP limit

• Turn the UP limit adjustment screw counter-clockwise 5-1/2 turns.

• Press the Door Control push bar. The trolley willtravel to the fully open position.

• Manually raise the door to the open position(parallel to the floor), and lift the door arm to thetrolley. The arm should touch the trolley just inback of the door arm connector hole. Refer to thefully open trolley/door arm positions in theillustration. If the arm does not extend far enough,adjust the limit further. One full turn equals 2" oftrolley travel.

Closed Door Adjustment:Decrease DOWN limit

• Turn the DOWN limit adjustment screw clockwise5 complete turns.

• Press the Door Control push bar. The trolley willtravel to the fully closed position.

• Manually close the door and lift the door arm to thetrolley. The arm should touch the trolley just aheadof the door arm connector hole. Refer to the fullyclosed trolley/door arm positions in the illustration. Ifthe arm is behind the connector hole, adjust the limitfurther. One full turn equals 2" of trolley travel.

Connect the door arm to the trolley:• Close the door and join the curved arm to the connector hole in the trolley with the remaining clevis pin. It may

be necessary to lift the door slightly to make the connection.• Secure with a ring fastener.

• Run the opener through a complete travel cycle. If the door has a slight "backward" slant in full open positionas shown in the illustration, decrease the UP limit until the door is parallel to the floor.

27

Adjustment Step 1Adjust the UP and DOWN LimitsDo not make any limit adjustments until thesafety reversing sensors are completelyinstalled.

28

Limit adjustment settings regulate the points atwhich the door will stop when moving up or down.

The door will stop in the up direction if anythinginterferes with door travel. The door will reverse inthe down direction if anything interferes with thedoor travel (including binding or unbalanced doors).

To operate the opener, press the Door Control pushbar. Run the opener through a complete travel cycle.

• Does the door open and close completely?

• Does the door stay closed and not reverseunintentionally when fully closed?

If your door passes both of these tests, no limitadjustments are necessary unless the reversing testfails (see page 30).

Adjustment procedures are outlined below. Runthe opener through a complete travel cycle aftereach adjustment. Repeated operation of the opener duringadjustment procedures may cause the motor tooverheat and shut off. Simply wait 15 minutesand try again. Read the procedures carefully before proceeding toAdjustment Step 2. Use a screwdriver to make limitadjustments.

Left Side Panel

Limit Adjustment

Screws

Adjustment Label

How and When to Adjust the Limits

If the door does not open completelybut opens at least five feetIncrease up travel. Turn the UP limit adjustmentscrew clockwise. One turn equals 2" of travel.

If door does not open at least 5 feet: Adjust theUP (open) force as explained in Adjustment Step 2.

If the door does not close completelyIncrease down travel. Turn the DOWN limitadjustment screw counterclockwise. One turnequals 2" of travel.

If door still won't close completely, try lengtheningthe door arm, page 26.

If you have adjusted the door arm to the maximumlength and the door still will not close completely,lower the header bracket. See Installation Step 1,pages 12 and 13.

If the opener reverses in fully closed positionDecrease down travel. Turn the DOWN limitadjustment screw clockwise. One turn equals 2"of travel.

If the door reverses when closing andthere is no visible interference to travel cycleIf the opener lights are flashing, the Safety ReversingSensor is obstructed. Remove the obstruction.

Test the door for binding: Pull the manual releasehandle. Manually open and close the door. If the dooris binding, call for garage door service. If the door isnot binding or unbalanced, adjust the DOWN (close)force. See Adjustment Step 2.

Adjustment Section: Pages 28 – 30

Improper adjustment of the travel limits willinterfere with the proper operation of thesafety reverse system. The door might notreverse properly when required and couldseriously injure or kill someone under it. Testthe safety reverse system following alladjustments to the travel limits. See page 30.

WARNING

Adjustment Step 2Adjust the Force

Too much force on the door will interfere withthe proper operation of the safety reversesystem. The door might not reverse properlywhen required and could seriously injure orkill someone under it. Do not increase theforce beyond the minimum amount required toclose the door. Do not use the forceadjustments to compensate for a binding orsticking garage door. Test the safety reversesystem following all adjustments to forcelevels. See page 30.

Force adjustment controls are located on the rightpanel of the opener. Force adjustment settingsregulate the amount of power required to open andclose the door.

The door will stop in the up direction if anythinginterferes with its travel. The door will reverse in thedown direction if anything interferes with its travel(including binding or unbalanced doors).

If the forces are set too light, door travel may beinterrupted by nuisance reversals in the downdirection and stops in the up direction. Weatherconditions can affect the door movement, sooccasional adjustment may be needed.

The maximum force adjustment range is 260degrees, about 3/4 of a complete turn. Do not forcecontrols beyond that point. Turn force adjustmentcontrols with a screwdriver.

ForceAdjustment

Controls

Right Panelof Opener

KG KG

1

3

9

7

5

1

3

9

7

5

1 2 3

How and When to Adjust the Forces

Test the DOWN (close) forceGrasp the door bottom when the door is abouthalfway through DOWN (close) travel. The doorshould reverse. Reversal halfway through downtravel does not guarantee reversal on a two-inchobstruction. See page 30. If the door is hard tohold or doesn't reverse, decrease the DOWN (close)force by turning the control counterclockwise.

Make 10 degree turn adjustments until the doorreverses normally. After each adjustment, run theopener through a complete cycle.

Test the UP (open) forceGrasp the door bottom when the door is abouthalfway through UP (open) travel. The door shouldstop. If the door is hard to hold or doesn't stop,decrease UP (open) force by turning the controlcounterclockwise.

Make 10 degree turn adjustments until the doorstops easily. After each adjustment, run the openerthrough a complete travel cycle.

If the door doesn't open at least 5 feetIncrease UP (Open) force by turning the controlclockwise. Make 10 degree turn adjustments untildoor opens completely. Re-adjust the UP limit ifnecessary. After each adjustment, run the openerthrough a complete travel cycle.

If the door reverses during the down (close)cycle and the opener lights aren't flashingIncrease DOWN (close) force by turning the controlclockwise. Make 10 degree turn adjustments until thedoor completes a close cycle. After each adjustment,run the opener through a complete travel cycle. Donot increase the force beyond the minimumamount required to close the door.

29

Force Adjustment Label

KG KG

1

3

9

7

5

1

3

9

7

5

WARNING

Adjustment Step 4Test the Safety Reverse System

Test:• Place a 2x4 laid flat on the floor, centered under

the garage door.

• Operate the door in the down direction. The doormust reverse on striking the obstruction.

Adjustment:If the door stops on the obstruction, it is not travelingfar enough in the down direction.

• Increase the DOWN limit by turning the DOWNlimit adjustment screw counterclockwise 1/4 turn.

• Repeat the test.

On a sectional door, make sure limitadjustments do not force the door arm beyond astraight up and down position. See theillustration on page 26.• When the door reverses on the 2x4 laid flat,

remove the obstruction and run the opener through3 or 4 complete travel cycles to test adjustment.

If the door will not reverse after repeatedadjustment attempts, call for professionalgarage door service.

Failure to test and adjust the safety reversesystem may result in serious injury or death topersons trapped by a closing garage door.Repeat this test once a month and adjust asneeded.

30

Adjustment Step 3Test the Protector System®

• Press the remote control push button to openthe door.

• Place the opener carton in the path of the door.

• Press the remote control push button to close thedoor. The door will not move more than an inch,and the opener light(s) will flash.

Professional service is required if the openercloses the door when the safety reversingsensor is obstructed.The garage door opener will not close from aremote if the indicator light in either sensor isoff (alerting you to the fact that the sensor ismisaligned or obstructed).The garage door can be closed by pressing andholding the Door Control push bar until down travelis completed. Safety Reversing Sensor Safety Reversing Sensor

Without a properly working safety reversingsensor, persons (particularly children) couldbe seriously injured or killed if trapped by aclosing garage door. Repeat this test once amonth.

WARNING

WARNING

GARAGE DOOR

2x4 laid flat

Important safety check:Repeat Adjustment Steps 1 - 4 after:• Each adjustment of door arm length, force controls

or limit controls.

• Any repair to or adjustment of the garage door(including springs and hardware).

• Any repair to or buckling of the garage floor.

• Any repair to or adjustment of the opener.

Once a MonthManually operate door. If it is unbalanced orbinding, call for professional garage door service.

Check to be sure door opens and closes fully.Adjust limits and/or force if necessary. (See pages28 and 29.)

Repeat the safety reverse test. Make anynecessary adjustments. (See page 30.)

Once a YearOil door rollers, bearings and hinges.The opener does not require additional lubrication.Do not grease the door tracks.

Weather conditions may cause some minorchanges in door operation requiring some re-adjustments, particularly during the first year ofoperation. Pages 28 and 29 refer to the limit and forceadjustments. Only a screwdriver is required. Followthe instructions carefully.

Repeat the safety reverse test (page 30) after anyadjustment of limits or force.

Care of Your Opener

31

IMPORTANT SAFETY INSTRUCTIONS

To reduce the risk of severe injury or death to persons:1. READ AND FOLLOW ALL INSTRUCTIONS.

2. Do not permit children either to operate or to play with the opener. Keep remote control in a locationinaccessible to children.

3. Operate opener only when the door is in full view and free from any obstruction. Keep the door insight until it is completely closed. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR.

4. Check safety reversal system monthly. See page 30. The garage door MUST reverse on contact witha 2x4 board laid flat on the floor. If an adjustment is made to either the force or limit of travel, bothadjustments may be needed and the safety reversal system must be checked. Failure to properlyadjust the opener may result in severe injury or death.

5. If possible, use the manual release only when the door is in a closed position. Caution should betaken whenever the disconnect cord is actuated with the door open. Weak or broken springs maycause the door to fall rapidly, causing injury or death to persons.

6. KEEP GARAGE DOORS PROPERLY BALANCED. See page 3. An improperly balanced door may notreverse when required and could result in severe injury or death.Repairs to cables, spring assembliesand other hardware must be made by a professional garage door person.

7. Disconnect the electric power to the garage door opener before making any repairs or removing thecovers.

8. SAVE THESE INSTRUCTIONS.

Force ControlsLimit Controls

Adjustment Label(Located on the left side panel)

Adjustment Label(Located on the right panel)

KG KG

1

3

9

7

5

1

3

9

7

5

Maintenance Schedule

Limit and Force Adjustment Controls

WARNING WARNING

The remote control transmitter:The opener must learn the code of any new remotecontrol. Page 33 explains how to program yourgarage door opener and how to erase all codes ifrequired. Self service of your receiver and remotecontrols is not recommended. If service is needed,call the toll-free number listed on the back page.

The transmitter battery:The green test light will glow and the opener willoperate when the remote control is activated, as longas there is adequate battery power.

If the test light is dim or off, replace the battery. Alsocheck the test light if transmission range decreases.

The 12V battery should produce power for at least ayear.

Dispose of your old battery properly.

To open the doormanually:The door should be fullyclosed if possible. Pulldown on the manualrelease handle and liftthe door manually. Toreconnect the door to theopener, press the DoorControl push bar.

32

Activate the opener with any of the following:• The Remote Control Transmitter. Hold push

button down until the door starts to move.

• The Door Control. Hold push bar or button downuntil the door starts to move.

• The Outside Keylock or Keyless Entry. (SeeAccessories)

When the opener is activated with the safetyreversing sensor installed and correctly aligned:1. If open, the door will close. If closed, the door will

open.

2. If closing, the door will reverse.

3. If opening, the door will stop (allowing space forentry and exit of pets and for fresh air).

4. If the door has been stopped in a partially openposition, it will close.

5. If obstructed while closing, the door will reverse.

6. If obstructed while opening, the door will stop.

7. The garage door will reverse in the closing cyclewhen the invisible beam is broken. If fully open,the door will not close when the beam is broken.The sensor has no effect in the opening cycle.

If the sensor is not installed, or is not aligned correctly,the door won't close from any remote transmitter. Youcan close the door with the Door Control, the OutsideKeylock, or Keyless Entry, however, if you activatethem until down travel is complete. If you releasethem too soon, the door will reverse. The opener lights will blink for 5 seconds when thesafety reversing sensor causes the door to reverse.

Opener Lights will turn on under the followingconditions: When the opener is initially plugged in;when the power is interrupted; when the opener isactivated. They will turn off automatically after 4-1/2minutes or provide constant light when the Lightfeature is activated. Bulb size is 75 watts maximum.

Trolley

Trolley Release Arm

NOTICE


(Pull Down)

Trolley

Trolley Release Arm

NOTICE


(Pull Down & Back Towards Opener)

Lockout position

Manual disconnectposition

Weak or broken springs could allow an opendoor to fall (either rapidly or unexpectedly),resulting in serious injury, death or propertydamage. If possible, use the manual releaserope and handle only when door is fullyclosed.

Lighted Push Bar: Press to open or close the door. Press again toreverse the door during the closing cycle or to stopthe door while it's opening.

Light Feature: Press the Light button. If the opener light is off, it willturn on.If the opener light is on, (even in the 4-1/2 minuteautomatic cycle) it will turn off.But if you use the Light button to turn the light(s) onand then activate the opener, the light(s) will turn offafter 4-1/2 minutes.The Light feature will not control the opener lightswhen the door is in motion.

Lock Feature: Designed to prevent operation of the door fromportable remote controls. However, the door willopen and close from the Door Control push bar andfrom the Outside Keylock and the Keyless EntryAccessories.To activate: Press and hold the Lock button for 2seconds. The push bar indicator light will flash aslong as the Lock is on.To turn off: Press and hold the Lock button againfor 2 seconds. The push bar indicator light will stopflashing. Normal operation will resume. The Lockfeature will also turn off whenever the "Smart"button on the opener end panel is activated.

Operation of Your Opener

Operation of the Multi-Function Door Control Panel

WARNING

The lockout featureprevents the trolley fromreconnecting automat-ically. Pull the manualrelease handle down andback (toward the opener).The door can then beraised and lowered man-ually as often asnecessary. To disengagethe Lockout Feature, pullthe manual releasehandle straight down.The trolley will reconnecton the next UP or DOWNoperation.

Multi-Function Remote Control

Select a RemotePush Button

Battery indicator light

Garage Door Opener (With "Smart" Button)

"Smart"Button

IndicatorLight

END PANEL

KG KG

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Children operating or playing with a garagedoor opener can injure themselves or others.The garage door could close and causeserious injury or death. Do not allow childrento operate the door control(s) or remotecontrol transmitter(s).A moving garage door could injure or killsomeone under it. Activate the opener onlywhen you can see the door clearly, it is free ofobstructions, and is properly adjusted.

Your garage door opener receiver and remotecontrol have been set at the factory to a matchingcode. The opener will activate when the LARGEbutton on the remote(s) is pressed. The multi-function remote(s) can also activate additionalgarage door openers.

Below are instructions for programming your openerto match the other buttons on your multi-functionremote and any additional remotes you maypurchase. See available accessories on page 38.

Your "Smart" garage door opener will operate with:

• up to four "Smart" remote controls (with greenindicator lights),

• a Keyless Entry System, and

• code switch remote controls with red indicatorlights.

To Add A RemoteSelect a push button to operate the receiver,Figure 1.

1. Press and hold the remote push button.

2. Then press and release the "Smart" button on theright side panel of the opener, Figure 2. Theopener lights will flash once.

3. Release the remote push button.

Now the opener will operate when the remotecontrol push button is pressed.

If you release the remote control push buttonbefore the opener lights flash, the opener willnot accept the code.

To Change the Selected Push ButtonOn the Same Remote

If you decide to use a different remote control buttonthan originally programmed into the opener, youneed to erase all the learned codes and reprogrameach remote used to operate the garage dooropener.

To Erase All Remote Control Codes• Press and hold the "Smart" button on the opener

panel until the indicator light turns off (about 6seconds). All the codes the opener has learnedwill be erased.

• To reprogram, repeat Steps 1 – 3 for each remotecontrol in use.

33

Code programming instructions are also locatedon the opener panel.

Figure 1

Figure 2

WARNING

Receiver & Remote Control Programming

NOTICE: To comply with FCC/IC rules, adjustment or modification of thisreceiver and/or transmitter are prohibited, except for changing the codesetting or replacing the transmitter battery. THERE ARE NO OTHERUSER SERVICEABLE PARTS.

1. Does the opener have electric power? Plug a lamp into the outlet. If it doesn't light,check the fuse box or the circuit breaker. (Some outlets are controlled by a wallswitch.)

2. Have you disabled all door locks? Review installation instruction warnings on Page 11.3. Is there a build-up of ice or snow under the door? The door may be frozen to the

ground. Remove any restriction.4. The garage door spring may be broken. Have it replaced.5. Repeated operation may have tripped the overload protector in the motor. Wait

15 minutes. Try again.

Having a Problem?

Situation Probable Cause & Solution

The opener doesn'toperate from eitherthe door control orthe remote control:

Opener operatesfrom remote control,but not from doorcontrol:

1. Is the door control push bar lit? If not, Remove the bell wire from the opener terminalscrews. Short the red and white terminals by touching both terminals at the sametime with a piece of wire. If the opener runs, check for a faulty wire connection at thedoor control, a short under the staples, or a broken wire.

2. Are the wiring connections correct? Review Step 6, page 18.

The door operatesfrom the door control,but not from theremote control:

1. If your model has the Lock feature, turn it off.2. Is the wall push button flashing? Your opener needs to re-learn a remote control

code. Refer to instructions on the opener panel.3. Does the battery test light glow when the remote control push button is pressed? If

not, replace the battery.4. Program the receiver to match the remote control code.5. Repeat the receiver programming procedure with all remote controls.

The remote controlhas short range:

The garage dooropens and closesby itself:

1. Be sure that all remote control push buttons and battery indicator lights are off.2. Remove the bell wire from the door control terminals and operate from the remote

control only. If this solves the problem, the door control is faulty (replace), or there isan intermittent short on the wire between the door control and the opener.

The door doesn'topen completely:

1. If the door has been working properly but now doesn't open all the way, increase theup force. See page 29.

2. Is something obstructing the door? Remove the obstruction or repair the door.3. If door opens at least 5 feet, the travel limits may need to be increased. One turn

equals 2 inches of travel. See page 28.Repeat the safety reverse test after the adjustment is complete.

The door stops butdoesn't closecompletely:

Review the travel limits adjustment procedures on page 28.Repeat the safety reverse test after any adjustment of door arm length, closeforce or down limit.

34

1. Check the battery test light. If the light is dim, replace the battery.2. Change the location of the remote control in your car.3. Check to be sure the antenna on the side or back panel of the opener extends fully

downward.4. Some installations may have shorter range due to a metal door, foil backed

insulation, or metal garage siding.

Opener noise isdisturbing in livingquarters of home:

If operational noise is a problem because of proximity of the opener to the livingquarters, the Vibration Isolator Kit 41A3263 can be installed. This kit was designed tominimize vibration to the house and is easy to install.

Having a Problem? (continued)

Situation Probable Cause & Solution

The opener strains ormaximum force isneeded to operatethe door:

The door may be out of balance or the springs are broken. Close the door and use themanual release rope and handle to disconnect the trolley. Open and close the doormanually. A properly balanced door will stay in any point of travel while being supportedentirely by its springs. If it does not, disconnect the opener and call for professional garagedoor service. Do not increase the force to operate the opener.

The opener motorhums briefly, thenwon't work:

1. The garage door springs are broken. See above.2. If the problem occurs on the first operation of the opener, door may be locked. Disable

the door lock. If the belt was removed and reinstalled, the motor may be out of phase.Remove the belt; cycle the motor to the down position. Observe the drive sprocket.When it turns in a clockwise direction and stops in the down position, reinstall the belt.

Repeat the safety reverse test after the adjustment is complete.

The opener won'toperate due topower failure:

1. Use the manual release handle to disconnect the trolley. The door can be openedand closed manually. When the power is restored, press the Door Control and trolleywill automatically reconnect (unless trolley is in the lockout position, see page 32).

2. The Outside Quick Release accessory (for use on garages with no service door)disconnects the trolley from outside the garage in case of power failure.

35

The door reverses forno apparent reasonand opener lightsdon't blink:

1. Is something obstructing the door? Pull the manual release handle. Operate the doormanually. If it is unbalanced or binding, call for professional garage door service.

2. Clear any ice or snow from the garage floor area where the door closes.3. Review the force adjustment procedures on page 29.4. If door reverses in the fully closed position, decrease the travel limits (page 28).Repeat the safety reverse test after adjustments to force or travel limits. The needfor occasional adjustment of the force and limit settings is normal. Weatherconditions in particular can affect door travel.

The opener lights…

The door reverses forno apparent reasonand opener light(s) blink for 5 secondsafter reversing:

don't turn on:Replace the light bulbs (75 watts maximum). Use a standard neck garage door openerbulb if regular bulb burns out.don't turn off:Is the Light feature on? Turn it off.

Check the safety reversing sensor. Remove the obstruction or align the receiving eye.See page 23.

The door opens butwon't close:

1. If the opener lights blink, check the safety reversing sensor. See page 232. If the opener lights do not blink and it is a new installation, check the down force.

See Adjustment Step 2, page 29. For an existing installation, see below.Repeat the safety reverse test after the adjustment is complete.

NOTICE

LIGHT

LOCK

12VDC 2

9UP

CEILING MOUNT ONLY

13

1211

13

4 56

87

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RAIL GREASE

NO. 83A4

8

6

7

9

Repair Parts

Rail Assembly Parts

Installation Parts

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KEY PARTNO. NO. DESCRIPTION

1 1A995 Master link kit2 41B3869-1 Complete trolley assembly3 183B112 Rail braces (each)4 183B111 T-rail – center sections (each)5 183B113 T-rail – end sections (each)6 41A3589 Full belt assembly7 41A3588 Belt pulley bracket8 83A4 Rail grease9 41B4103 Tension assembly (Spring/Trolley Nut)

10 109B33 Trolley ClipNOT SHOWN

41A2848 Rail assembly hardware kit (includeshardware illustrated on page 7).


1 41A4251-7A Multi-function door control panel2 10A14 12V battery3 29C128 Transmitter visor clip4 41A3888-11 Multi-function remote control

housing & screw only (no circuit board)5 41A2828 Manual release rope & handle assembly6 217A238 2-conductor bell wire – white & white/red7 12B374-1 Door bracket8 12B380-1 Door bracket plate9 41A4353-1 Header bracket w/clevis pin & fastener

10 41A4373A Safety sensor kit(receiving and sending eyes)with 3' 2-conductor bell wire attached

11 12B350 Hanging brackets12 178B34 Straight door arm section13 178B35 Curved door arm section14 12B483 “C” wrap bracket15 12B484 Square hole mounting bracket16 12B485 Slotted hole mounting bracket

NOT SHOWN41A4437-1 Installation hardware bag (includes

hardware illustrated on page 7).41A4116 Safety sensor hardware114A1982 Owner's manual

Repair Parts

Opener Assembly Parts

2

1210

15

43

DN

UP

BrownWire

(Down)Contact LIMIT SWITCH ASSY.

GreyWire

YellowWire

(Up)Contact

Center LimitContact

DriveGear

11

5

6

7

9

8

9

8

20

14

13

16

1

3 18 19

175


1 41A4371 Belt cap retainer 2 41A4885 Gear and sprocket assy.,

Complete with:Spring washerThrust washerRetaining ringBearing plateRoll pins (2)Drive gear and worm gearHelical gear w/retainer and grease

3 41A2817 Drive/worm gear kit w/greaseRoll pins (2)

4 41B4245 Line cord5 41C4876 Wire harness assembly with plug6 41A4252-6D Receiver logic board assembly

Complete with Logic board7 41A4888 End panel w/all labels8 175B88M Light socket9 108D34 Lens


10 30B363 Capacitor – 1/2 h.p.11 12A373 Capacitor bracket12 41D3150 Terminal block w/screws13 41C4842 Universal replacement motor &

bracket assembly, Complete with:Motor, worm, bracket, bearing assembly, RPM sensor.

14 41A3583-6 Cover 15 41A2818 Helical gear & retainer w/grease16 41D3452 Limit switch assembly17 41C4398A RPM sensor assembly18 41A2826 Shaft bearing kit19 41A2822A Interrupter cup assembly20 41A4889 End panel

NOT SHOWN41A2825 Opener assembly hardware kit

(includes screws not designated by a number in illustration.

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1 23 4

5 67 8

9 0ENTER

LIGHT

LOCK

Accessories Available for your Opener

853C760C

740C

7702C

Multi-Function Standard SizeRemote Control:Includes visor clip.

Keyless Entry:Enables homeowner to operategarage door opener from outsideby entering code on speciallydesigned keyboard.

Outside Keylock:Opens the garage doorautomatically from outside whenremote control is not handy.

Outside Quick Release:Required for a garage with NOaccess door.

8 foot Rail Extension Kit:To allow an 8 foot door to openfully.

850C Single-Function Standard SizeRemote Control:Includes visor clip.

856C Multi-Function Mini RemoteControl:With key ring & Velcro fasteningstrip.

7704C

959C Security Remote ControlEnables homeowner to operategarage door opener by entering2, 3, 4, or 5 digit code frombacklit keyboard. Includes visorclip.

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945C Multi-Function Door Control Panel:Provides a Lock Feature which prevents operation of garage door opener from portableremotes and a Light Feature for constant light.

Index

Access Door/Outside Quick Release Accessory............................................................................................4, 5

Belt Tension .................................................................................................................................................4, 5, 10

Electrical Safety Warnings........................................................................................................................2, 20, 31

Garage DoorTesting for balance, binding and sticking...................................................................................................3, 28, 31Determining high point of travel:

Sectional door...................................................................................................................................................12One-piece door .................................................................................................................................................13

Disabling existing locks....................................................................................................................................3, 11Force Controls

Adjustment procedures.....................................................................................................................................29Problems that might require force adjustments ..........................................................................................34, 35Safety warnings ..........................................................................................................................................29, 31

Door hardware .....................................................................................................................3, 9, 11, 12, 18, 31, 32Maintenance instruction label ........................................................................................................................11, 28Reinforcement requirements ...........................................................................................................................4, 24Removing of all ropes ......................................................................................................................................3, 11Possible door damage...................................................................................................................................16, 24Travel Limits

Adjustment procedures.....................................................................................................................................28Problems that might require limit adjustments............................................................................................34, 35Safety warnings ..........................................................................................................................................28, 31

Manual Release Rope and HandleLockout feature ...................................................................................................................................................32Manual disconnect..............................................................................................................................................32Safety warnings ................................................................................................................................11, 19, 31, 32

Opener TerminalsDoor control connections ....................................................................................................................................18Safety reversing sensor connections..................................................................................................................23Outside Keylock Accessory connections ............................................................................................................18

Protector System®..........................................................................................................................................21, 30

Receiver and Remote ControlsProgramming the receiver ..................................................................................................................................33Erasing all codes ................................................................................................................................................33Activating other openers and/or light products ...................................................................................................33Safety warning ....................................................................................................................................................33Problems with remote control operation .............................................................................................................34

Safety Reverse Test Procedure..........................................................................................................................30Testing required................................................................................................................................11, 30, 34, 35Safety reverse system problemsSecuring header bracket to wall .......................................................................................................................12Adjusting travel limits ........................................................................................................................................28Applying excessive force on the door ...............................................................................................................29 Buckling or uneven floor .................................................................................................................................4, 5

Safety Warnings.........................................................2, 3, 9, 11, 12, 16, 18, 19, 20, 21, 24, 28, 29, 30, 31, 32, 33

User Instruction Label for Garage Wall .......................................................................................................11, 18

Vibration noise (isolator kit) ...............................................................................................................................34

39

CHAMBERLAIN SERVICEIS ON CALL

OUR LARGE SERVICE ORGANIZATIONSPANS AMERICA

INSTALLATION AND SERVICE INFORMATION IS ASNEAR AS YOUR TELEPHONE SIX DAYS A WEEK.

SIMPLY DIAL OUR TOLL FREE NUMBER:

1-800-654-4736HOURS: (Mountain Std. Time)

6 A.M. to 6 P.M. Monday through Friday7 A.M. to 3 P.M. Saturday

Closed Sunday

For professional installation, parts and service,contact your local CHAMBERLAIN dealer. Look for himin the Yellow Pages, or call our Service number for a listof dealers in your area.

HOW TO ORDERREPAIR PARTS

Selling prices will be furnished on request, or parts willbe shipped at prevailing prices and you will be billedaccordingly.

WHEN ORDERING REPAIR PARTS, ALWAYS GIVETHE FOLLOWING INFORMATION:

• PART NUMBER

• PART NAME

• MODEL NUMBER

ADDRESS ORDERS TO:

CHAMBERLAIN MFG, CANADA, INC.230 Bayview Drive

Barrie, Ont., Canada L4N5E9

SERVICE INFORMATIONTOLL FREE NUMBER:

1-800-654-4736

CHAMBERLAIN GARAGE DOOR OPENER ONE-YEAR LIMITED WARRANTY

The Chamberlain Group, Inc. (“Seller”) warrants to the first retail purchaser of this product that it is free from defect inmaterials and/or workmanship for a period of one year from the date of purchase. The proper operation of thisproduct is dependent on your compliance with the Owner’s Manual instructions regarding installation,operation, maintenance and testing. Failure to comply strictly with those instructions will void this warranty inits entirety. Please note that the safety reverse system, in order to operate properly with your garage door,must be adjusted and periodically tested in accordance with the Owner’s Manual.If, during the limited warranty period, it appears as though this product contains a defect which is covered by thislimited warranty, call our toll free service number, before dismantling this product, at 1-800-654-4736. Then sendthis product, pre-paid and insured, to our service center for warranty repair. You will be advised of shipping instructionswhen you call the toll free service number. Please include a brief description of the problem and a dated proof-of-purchase receipt with any product that is returned for warranty repair.Products returned to Seller for warranty repair, which upon receipt by Seller are confirmed to be defective and coveredby this limited warranty, will be repaired or replaced (at Seller’s sole option) at no cost to you and returned pre-paid.Defective parts will be repaired or replaced with new or factory-rebuilt parts at Seller’s sole option.THIS LIMITED WARRANTY IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANYIMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR OTHERWISE,AND OF ANY OTHER OBLIGATIONS OR LIABILITY ON SELLEER’S PART. THIS LIMITED WARRANTY DOESNOT COVER NON-DEFECT DAMAGE, DAMAGE CAUSED BY IMPROPER INSTALLATION, OPERATION ORCARE (INCLUDING, BUT NOT LIMITED TO ABUSE, MISUSE, FAILURE TO PROVIDE REASONABLE ANDNECESSARY MAINTENANCE, OR ANY ALTERNATIONS TO THIS PRODUCT), LABOR CHARGES FORDISMANTLING OR REINSTALLING A REPAIRED OR REPLACED UNIT, OR REPLACEMENT BATTERIES.UNDER NO CIRCUMSTANCES SHALL SELLER BE LIABLE FOR CONSEQUENTIAL, INCIDENTAL OR SPECIALDAMAGES ARISING IN CONNECTION WITH THE USE, OR INABILITY TO USE, THIS PRODUCT. IN NO EVENTSHALL SELLER’S LIABILITY FOR BREACH OF WARRANTY, BREACH OF CONTRACT, NEGLIGENCE ORSTRICT LIABILITY EXCEED THE COST OF THE PRODUCT COVERED HEREBY. NO PERSON IS AUTHORIZEDTO ASSUME FOR US ANY OTHER LIABILITY IN CONNECTION WITH THE SALE OF THIS PRODUCT.Some provinces do not allow the exclusion or limitation of consequential, incidental or special damages, so the abovelimitation or exclusion may not apply to you. This limited warranty gives you specific legal rights, and you may alsohave other rights which vary from state to state.

LIMITED WARRANTY ON MOTOR - MODEL 8100CThe motor is fully warranted for the lifetime of the product to the first-time purchaser.

©1995, Chamberlain Mfg., Canada, Inc.114A1982B All Rights Reserved Printed in Canada

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