Serial # (located on electrical box cover)

Installation Date

Wiring Type

OWNER'S MANUAL

MODEL GTINDUSTRIAL DUTY DOOR OPERATOR

C2 WiringF A C T O R Y S E T

See page 8 forother wiring

configurations

2 YEAR WARRANTY NOT FOR RESIDENTIAL USE

LISTED DOOR OPERATOR

41B6

MOTORTYPE: .................................Continuous duty

HORSEPOWER:.................1/2, 3/4,1 & 1-1/2 HpSingle or Three phase

SPEED:...............................1725 RPM

VOLTAGE: ..........................115, 220, 230 Single phase230, 460, 575 Threephase

CURRENT: .........................See motor nameplate

2

MECHANICALDRIVE REDUCTION:.............Primary: Heavy dutywormgear-in-oil-bath speed reducer.

OUTPUT SHAFT SPEED: .....64 R.P.M.

DOOR SPEED: ......................1’ Foot per sec..............................................depending on door

BRAKE: .................................Solenoid actuated discbrake.

BEARINGS: ...........................Output Shaft: Shielded Ball Bearing.

SAFETYDISCONNECT: .............Quick disconnect door arm for

emergency manual door operation.

REVERSING EDGE: ....(Optional) Electric or pneumatic sensing device attached to the bottom edge of door.

A REVERSING EDGE IS STRONGLY RECOMMEND-ED FOR ALL COMMERCIAL OPERATOR INSTALLA-TIONS. REQUIRED WHEN THE 3 BUTTON CON-TROL STATION IS OUT OF SIGHT OF DOOR ORANY OTHER CONTROL (AUTOMATIC OR MANUAL)IS USED.

SPECIFICATIONS

ELECTRICALTRANSFORMER:.............24VAC

CONTROL STATION: ......NEMA 1 three button station.OPEN/CLOSE/STOP

WIRING TYPE: .................C2 (Factory Shipped) Momentary contact to OPEN & STOP, constant pres-sure to CLOSE, open override plus wiring for sensingdevice to reverse. See page 8 for optional control set-tings.

LIMIT ADJUST: ................Linear driven, fully adjustable screw type cams. Adjustable to 24 feet.

WEIGHTS AND DIMENSIONSHANGING WEIGHT: .........110-140 LBS.

17-9/16”

Door Height Plus 4 feet (minimum)

17-1/2”

12-1/2”

HIGHEST POINT OF DOOR TRAVEL

4”

*

3

OPERATOR PREPARATION

4. Connect the track to the powerhead by fasteningtwo 3/8"-16 x 3/4" bolts and nuts through the frameand the end holes in track. Tighten all four bolts tosecure the track to the powerhead.

TROLLEY CARRIAGE / CHAIN ATTACHMENT1. Attach the take-up bolt to the trolley carriage using3/8-16 hex nuts and lock washer, as shown below.

2. Using one of the master links, attach the chain tothe other end of the trolley carriage. Reel the chainaround the front idler shaft, over the spacer brackets,back to the drive shaft sprocket, and then to the take-up bolt on the carriage.

3. Using the other master link, attach the chain to thetake-up bolt and tighten to the desired chain tension.

CHAIN TENSION: With trolley positioned at eitherend of the track, a properly adjusted chain will sagabout 3" at the mid-point. If necessary, remove linksfrom the chain to achieve proper adjustment.

KEEP DOOR BALANCED. STICKING OR BINDINGDOORS MUST BE REPAIRED. DOORS, DOORSPRINGS, CABLES, PULLEYS, BRACKETS ANDTHEIR HARDWARE MAY BE UNDER EXTREME TEN-SION AND CAN CAUSE SERIOUS PERSONALINJURY OR DEATH. CALL A PROFESSIONAL DOORSERVICEMAN TO MOVE OR ADJUST DOORSPRINGS OR HARDWARE.

WARNING

CAUTION

WARNING

WARNING

SPACER BRACKET(Mounted Nylon Pad Side Up)

TROLLEY CARRIAGE

OPERATOR MOUNTINGHOLES (Three on each side) Take-Up Bolt

TRACK ASSEMBLY1. Using the 3/8"-16 x 3/4 " bolts and flange hex nutssupplied, assemble the operator track by installing andtightening the track spacer brackets. Position thespacers evenly over the length of the track. NOTE:The nylon pad on the spacer bracket should face up.

2. Using (2) 3/8"-16 x 1" bolts and lock washers,install the front idler assembly to the second set ofholes of one end of the track. Refer to the illustrationbelow.

3. Slide the trolley carriage onto the track so that thetake-up bolt will be toward the operator.

POWERHEAD ATTACHMENT1. Position the track assembly on the frame of thepowerhead so that the motor side of operator is inback (away from door ).

2. Secure the operator in place by Installing six 3/8”-16 x 3/4” bolts in the three holes on each side of theframe and track.

Reel Chainaround Idler andover Spacer Brackets

Master Link

Takeup Bolt

Roller ChainMaster Link

HexNut

Lockwasher

Hex Nut

TROLLEY ASSEMBLY

Trolley Carriage

Idler

DriveSprocket

Chain Route AndDirection Path

OPERATOR CHAIN ROUTE

4

Carpenter'sLevel

HeaderWall

High ArcPoint

IMPORTANT NOTE: Before the operator is installed, be sure the door has been properly aligned and is workingsmoothly. Although each installation will vary due to particular building characteristics, refer to the followinggeneral procedures to install the operator.

MOUNT HEADER BRACKETThe trolley operator is generally mounted over thecenter of the door. However, off center mountingmay be required due to interfering structures orlocation of door stile / top section support. In suchcases, the operator may be mounted up to 24” offcenter on torsion spring doors. Extension springsrequire center mounting.

1. Locate the center of the door and mark a line onthe wall directly above the door. Extend this line upthe wall.

2. Determine the highest point of door travel.Slowly raise the door and observe the action of thetop section. When the top section reaches its highestpoint, use a level and project a line from this point tothe center line the of the door.

MOUNT OPERATOR1. Allowing the motor to rest on the floor, raise thefront end of the track assembly to the front headerbracket and fasten using the 3/8”dia. x 6.40” longpivot shaft and cotterpins supplied.

3. Using the projected lines for location, mount asuitable wood block or length of angle iron to the wallabove the door opening. Refer to the illustrationbelow. This will provide a mounting pad for the frontheader bracket of the operator. If necessaryreinforce the wall with suitable mounting brackets toensure adequate support of mounting pad. Usingsuitable hardware, mount the (U shaped) front headerbracket to the pad.

Header Bracket Drill Pattern

2. Swing the operator to a horizontal position abovethe guide rails and temporarily secure with a suitablerope, chain, or support from the floor. Now opengarage door slowly, being careful not to dislodge thetemporary support. Using the door as a support,place a level against the rail and shim the operatoruntil it is horizontal. Make sure that the operator isaligned with the center line of the door.

Operator Alignment

Header Attachment

Door TravelProjection

INSTALLATION INSTRUCTIONS

Pivot shaft

Cotterpins

Using the Door as support, shimoperator to a horizontal position.Guide

Rails

OF DOOR

3.50”1.75”

4” MIN.

High Rise PointProjection Line

5

INSTALLATION INSTRUCTIONS

OPERATOR SUPPORT1. The illustration below shows a typical method ofhanging the operator from the ceil ing. Eachinstallation may vary, but in all cases side bracesshould be used for additional strength.

2. For mounting of the support brace(s) to thepowerhead, Four holes (clearance up to 3/8” bolts)are located on each side of frame.

NOTE: If the operator is longer than 15 feet, use of amid-span support is recommended.

STRAIGHT ARM ATTACHMENT1. Fully close the door and move the trolley slider towithin (2”) two inches of the front idler.

2. Latch the straight door arm to the fixed roll pin inthe trolley carriage. Make sure the open side ofnotch on the arm faces the doorway.

3. Attach the door bracket to the door arm using the3/8”-16 x 1” bolt and nylon locking nut provided.Leave the nut and bolt loose enough to allow the twopieces to pivot freely.

4. Using 3/8” hardware provided, bolt the curveddoor arm to the straight arm, aligning the mountingholes in such a way that the door bracket pivot boltwill be in line with the top rollers on the door.

5. Position the door bracket to the center line on thedoor. Using suitable hardware, attach the doorbracket to the door. Many installations, except solidwood doors, will require additional support for thedoor. Refer to the illustration below.

IMPORTANT NOTE: At this time, ensure all boltsand lag screws are properly secured.

FAILURE TO SUSPEND THE OPERATORSECURELY MAY RESULT IN SERIOUS PERSONALINJURY OR DEATH, AND/OR PROPERTY DAMAGE.

WARNING

CAUTION

WARNING

WARNING

Powerhead Support Brace

Mid-SpanSupport Brace

Center Line of Door

Straight Arm

Door BracketCurvedDoor Arm

TopRoller

Pivot Bolt

6

TO AVOID SERIOUS PERSONAL INJURY OR DEATHFROM ELECTROCUTION, DISCONNECT ELECTRICPOWER BEFORE MANUALLY MOVING LIMIT NUTS.

WARNING

LIMIT SWITCH ADJUSTMENTMAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFOREPROCEEDING WITH ADJUSTMENTS.

If other problems persist, call our toll-free number forassistance - 1-800-528-2806.

1. To adjust limit nuts depress retaining plate to allownut to spin freely. After adjustment, release plateand ensure it seats fully in slots of both nuts.

2. To increase door travel, spin nut away from actu-ator. To decrease door travel, spin limit nuttoward actuator.

3. Adjust open limit nut so that door will stop in openposition with the bottom of the door even with topof door opening.

4. Repeat Steps 1 and 2 for close cycle. Adjust closelimit nut so that actuator is engaged as door fullyseats at the floor.

Retaining Plate

CLOSE Limit Switch

SAFETY(Aux. Close) Limit Switch

OPEN Limit Switch Actuator

Aux. OPEN Limit Switch

SENSING EDGES & PHOTO EYES

Sensing devices supplied for door industry type operatorswith an isolated normally open (N.O.) output are compati-ble with your operator. This includes pneumatic and elec-tric edges, and through beam and retro reflective photoeyes. If your door does not have a bottom sensing edge orsafety photo eyes and you wish to add a safety device toyour application, please contact your local LiftMasterAuthorized Dealer.

If not pre-installed by the door manufacturer, mount thesensing edge on the door according to the instructions pro-vided with the edge. The sensing edge may be electrical-ly connected by either coiled cord or take-up reel. Refer tothe steps below.

Important Notes:a) Proceed with Limit Switch Adjustments before making

any sensing edge wiring connections to operator asdescribed below.

b) Electrician must hardwire the junction box to the oper-ator electrical box in accordance with local codes.

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)

WIRING:For wiring of your sensing device to the operator,refer to the wiring diagram supplied with your opera-tor. See field connection terminals identified asSensing Device or Safety Edge.

TAKE-UP REEL: Take-up reel should be installed12" above the top of the door.

COIL CORD: Connect operator end of coil cord tojunction box (not supplied) fastened to the wallapproximately halfway up the door opening.

IT IS STRONGLY RECOMMENDED THAT ASAFETY PHOTO EYE OR SENSING EDGE BEUSED IN CONJUNCTION WITH THE OPERATOR.

NOTICE

7

Remove the cover from the electrical enclosure. Inside this enclosure you will find the wiring diagram(s)for your unit. Refer to the diagram (glued on the inside of the cover) for all connections described below.If this diagram is missing, call the number on the back of this manual. DO NOT INSTALL ANY WIRING ORATTEMPT TO RUN THIS OPERATOR WITHOUT CONSULTING THE WIRING DIAGRAM.

POWER WIRING CONNECTIONS

CONDUIT ACCESS

WARNINGDo Not Run Power &Control Wiring in the

Same Conduit

(2) 7/8” Dia Knockouts for control wiring conduit access(2 on end panel)

1-1/16’ Dia. Knockouts forpower wiring conduit access(1 farside)

WARNING

CAUTION

WARNING

WARNING

DISCONNECT POWER AT THE FUSE BOX BEFOREPROCEEDING.OPERATOR MUST BE PROPERLY GROUNDED ANDPERMANENTLY WIRED IN ACCORDANCE WITHLOCAL ELECTRICAL CODES. NOTE: THEOPERATOR SHOULD BE ON A SEPARATE FUSEDLINE OF ADEQUATE CAPACITY.ALL ELECTRICAL CONNECTIONS MUST BE MADEBY A QUALIFIED INDIVIDUAL.

WARNING

CAUTION

WARNING

WARNING

TO AVOID DAMAGE TO DOOR AND OPERATOR,MAKE ALL DOOR LOCKS INOPERATIVE. SECURELOCK(S) IN "OPEN" POSITION.IF THE DOOR LOCK NEEDS TO REMAINFUNCTIONAL, INSTALL AN INTERLOCK SWITCH.

1. Be sure that the power supply is of the correctvoltage, phase, frequency, and amperage to supplythe operator. Refer to the operator nameplate on thecover.

2. Using the 1-1/16” dia conduit accessknockout as shown below, bring supply lines to theoperator and connect wires to the terminals indicatedon the WIRING CONNECTIONS DIAGRAM.

DO NOT TURN POWER ON UNTIL YOU HAVEFINISHED MAKING ALL POWER AND CONTROLWIRING CONNECTIONS AND HAVE COMPLETEDTHE LIMIT SWITCH ADJUSTMENT PROCEDURE.

IMPORTANT: THIS UNIT MUST BE PROPERLYGROUNDED. A GROUND SCREW IS SUPPLIED INTHE ELECTRICAL BOX FOR CONNECTION OFTHE POWER SUPPLY GROUND WIRE. FAILURETO PROPERLY GROUND THIS UNIT COULDRESULT IN ELECTRIC SHOCK AND SERIOUSINJURY.

POWER WIRING

ON THREE PHASE MACHINES ONLY!Incorrect phasing of the power supply will cause themotor to rotate in the wrong direction (open whenCLOSE button is pressed and vice-versa). To correctthis, interchange any two of the incoming three phasepower lines.

8

CONTROL WIRING

Standard C2 or B2 WiringStandard operators are shipped from the factory withjumper set for C2 wiring, which requires constantpressure on button to close the door. If momentarycontact on close direction is desired (B2 wiring) youmust include an entrapment protection device. Seeclose control jumper setting below.

Constant pressure on close (C2 wiring)Red jumper wire was placed on terminal #2 in electrical enclosure. The operator will require constant pressure on close control in order to keepdoor moving in the close direction.

Momentary contact on close (B2 wiring)Move red jumper wire from terminal #2 to terminal

#3. The operator will require only momentarycontact to close the door.

WIRING DIAGRAMThis Operator has

Control Wiring.

SUPPLEMENTAL WIRING DIAGRAM(S)

REPLACEMENT WIRING DIAGRAM

Note: Supplemental Wiring Diagrams areto be used in addition to 1742-1.Replacement Wiring Diagram is to be usedin place of 1742-1.

SPECIAL CONTROLWIRING DATA

LOCATING THE CONTROL STATIONAll operators are supplied with some type of control station. Generally a three button station(OPEN/CLOSE/STOP) is provided. A two-position key switch or control station (OPEN/CLOSE) may be added orsubstituted when requested at the time of order. Mount the control station near the door.

WARNINGINSTALL THE CONTROL STATION WHERE THE DOORIS VISIBLE, BUT AWAY FROM THE DOOR AND ITSHARDWARE. IF CONTROL STATION CANNOT BEINSTALLED WHERE DOOR IS VISIBLE, OR IF ANYDEVICE OTHER THAN THE CONTROL STATION ISUSED TO ACTIVATE THE DOOR, A REVERSING EDGEMUST BE INSTALLED ON THE BOTTOM OF THE DOOR.FAILURE TO INSTALL A REVERSING EDGE UNDERTHESE CIRCUMSTANCES MAY RESULT IN SERIOUSINJURY OR DEATH TO PERSONS TRAPPEDBENEATH THE DOOR.

W A R N I N GW A R N I N GTO PREVENT ENTRAPMENT

DO NOT START DOOR DOWNWARD

UNLESS DOORWAY IS CLEAR

OPEN

CLOSE

STOP

StandardControl Station

WARNING Notice

PushButtons

IMPORTANT: Mount WARNING NOTICE beside orbelow the push button station.

MOUNT WARNING NOTICE

DETERMINE WIRING TYPERefer to the wiring diagram located on the inside cover the electrical box to determine the type of control wiring.

Wiring Diagram label on inside coverof electrical box

WiringType

SPECIAL CONTROL WIRINGIf your operator was shipped from the factory withnon-standard control wiring or with optional acces-sories that require addition instructions, refer to thewiring diagram(s) indicated in the special controlwiring data box. When a replacement wiring diagramis present, wiring diagrams in this manual will notapply. Refer only to the replacement wiring diagramfor all connections.

IMPORTANT NOTE: If your wiring diagram is missing,or you are unsure of the wiring type for your operator, con-tact the customer service department @ 1-800-528-2806.

9

CONTROL WIRING (con’t)

Radio ControlsOn all models with type B2 control wiring, a terminalbracket marked R1 R2 R3 is located on the outside ofthe electrical enclosure. All standard radio controlreceivers (single channel residential type) may bemounted to this bracket. The operator will then opena fully closed door, close a fully open door, andreverse a closing door from the radio transmitter.However, for complete door control from atransmitter, a commercial three-channel radio set(with connections for OPEN/CLOSE/STOP) isrecommended.

Additional Access Control EquipmentLocate any additional access control equipment as desired (but so that the door will be in clear sight of theperson operating the equipment), and connect to the terminal block in the electrical enclosure as shown on theFIELD WIRING CONNECTIONS diagram. Any control with a normally (N.O.) isolated output contact may beconnected in parallel with the OPEN button. More than one device may be connected in this manner. Use 16gauge wire or larger for all controls. DO NOT USE THE CONTROL CIRCUIT TRANSFORMER (24VAC) IN THEOPERATOR TO POWER ANY ACCESS CONTROL EQUIPMENT OTHER THAN A STANDARD RESIDENTIALTYPE RADIO RECEIVER.

External Interlock SwitchThe operator has a terminal connection for an external interlock switch. This switch must be a normally closed(N.C.) two-wire device with a contact rating of at least 3 amps @ 24VAC. When such a switch is connected asshown on the FIELD WIRING CONNECTIONS diagram, the control circuit will be disabled when the switch isactuated, thereby preventing electrical operation of the door from the control devices.

WARNING

CAUTION

WARNING

WARNING

DO NOT USE RADIO CONTROLS WITH YOUROPERATOR UNLESS YOU HAVE INSTALLEDSOME TYPE OF ENTRAPMENT PROTECTIONDEVICE. THE USE OF RADIO CONTROLSPRESENTS POTENTIAL HAZARDS DUE TO THEUSER’S ABILITY TO OPEN OR CLOSE THEDOOR WHEN OUT OF SIGHT OF THE DOOR. INADDITION, IF A SINGLE CHANNEL CONTROL ISUSED, THE USER WILL NOT BE ABLE TO STOPTHE DOOR FROM THE TRANSMITTER.

TORQUE ADJUSTMENT

1. Loosen set screws of torque adjustment nut on thegear reducer.

2. Back off toque nut until there is very little tensionon the belleville washers.

3. Tighten torque nut gradually until there is justenough tension to permit the operator to move thedoor smoothly through a complete open/close cycle,but to allow the reducer to sl ip if the door isobstructed.

4. Re-tighten the set screw that is directly over theflat portion of the shaft.

TORQUE NUTSET SCREW

10

EMERGENCY DISCONNECT SYSTEM

HeaderBracket

StraightDoor ArmAssembly

EmergencyReleaseHandle

DoorBracket

Door

Chain

ClevisPin

Trolley

EmergencyDisconnect

Track

Pull emergencyrelease handlestraight down.

Emergency disconnectwill open.

EmergencyDisconnect

CurvedDoor Arm

Door Arm

Lift free end ofdoor arm to trolley.

Pull emergency handleto allow arm to engage

roll pin. Release handle.Emergency disconnect

will close.

EmergencyDisconnect

Door ArmNOTICE

TO DISCONNECT DOOR FROM OPENER

TO RECONNECT DOOR ARM TO TROLLEY

DOOR ARM IS RELEASED FROM TROLLEY WHENEMERGENCY DISCONNECT OPENS.TO AVOID BEING STRUCK BY DOOR ARM, DO NOTSTAND UNDER THE ROPE OR DOOR ARM WHENPULLING THE EMERGENCY RELEASE.

WARNING

CAUTION

WARNING

WARNING

TEST THE SYSTEM

Turn on power. Test all controls and safety devicesto make sure they are working properly. It will benecessary to refer back to page 6 for fine adjustmentof the limit switches.

IMPORTANT NOTES:Do not leave operator power on unless all safety and entrapment protection devices have been tested and are working properly.

Be sure you have read and understand all Safety Instructions included in this manual.

Be sure the owner or person(s) responsible for operation of the door have read and understand the Safety Instructions, know how to electrically operate the door in a safe manner, and know how to use the manual disconnect operation of the door operating system.

WARNING

CAUTION

WARNING

WARNING

DO NOT PLACE HANDS OR TOOLS IN ORNEAR THE OPERATOR WHEN THE POWER ISON OR WHEN TESTING CONTROL OR SAFETYDEVICES. ALWAYS DISCONNECT POWERBEFORE SERVICING OR ADJUSTING THEOPERATOR.

11

BRAKE ADJUSTMENT

✳✳ Use SAE 30 Oil (Never use grease or silicone spray).

✔✔ Repeat ALL procedures.

■■ Do not lubricate motor. Motor bearings are rated for continuous operation.

■■ Inspect and service whenever a malfunction is observed or suspected.

■■ CAUTION: BEFORE SERVICING, ALWAYS DISCONNECT OPERATOR FROM POWER SUPPLY.

Check at the intervals listed in the following chart.

HOW TO ORDER REPAIR PARTSOUR LARGE SERVICE ORGANIZATION

SPANS AMERICAINSTALLATION AND SERVICE INFORMATION

ARE AVAILABLE 6 DAYS A WEEKCALL OUR TOLL FREE NUMBER - 1-800-528-2806

HOURS 7:00 TO 3:30 p.m. (Mountain Std. Time)MONDAY Through SATURDAY

WHEN ORDERING REPAIR PARTSPLEASE SUPPLY THE FOLLOWING INFORMATION:PART NUMBER DESCRIPTION MODEL NUMBER

ADDRESS ORDER TO:THE CHAMBERLAIN GROUP, INC.

Electronic Parts & Service Dept.2301 N. Forbes Blvd., Suite 104

Tucson, AZ 85745

EVERY EVERY EVERYITEM PROCEDURE 3 MONTHS 6 MONTHS 12 MONTHSDrive Chain Check for excessive slack.

Check & adjust as required.Lubricate.* ● ✔

Sprockets Check set screw tightness ●● ✔✔

Fasteners Check & tighten as required ●● ✔✔

Manual Disconnect Check & Operate ●● ✔✔

Bearings & Shafts Check for wear & lubricate ●● ✔✔

MAINTENANCE SCHEDULE

A solenoid brake is standard on GT operators. The brake is adjusted at the factory and should not needadditional adjustment for the the life of the friction pad.

Replace friction pads when necessary. Refer to theillustration for identification of components for thesolenoid type brake system.

Friction Pads

Release Lever

Brake PlateAssembly

Solenoid

Solenoid Brake System

SINGLE PHASE SCHEMATIC DIAGRAM 1742-1

4 3 5 6

1 24 3

2 1

6 5

L2

(YE)

(PUR)

(BL)

EXTERNALSTOP3 4 5 T1

24VACSEC.

PRI.

AUX. CLOSELIMIT SWITCH

NC C

1

7

10

OPEN

SAFETY EDGE

OPEN & CLOSELIMIT SWITCH

AUX. OPENC

NO

NC

LIMIT SWITCH

NC C

TO MOTORPOWER IN L11 PHASE

INTERLOCK

OP

R1

OP

OP

CL

CL OP

CL

OP14

13

OVERLOAD

R1

OPEN & CLOSE

R2R1

OPEN

CLOSE2

14

13

CL

CLLIMIT SWITCH

NC

CLOSE

C

R1

(BK)

(BK)

(BK)

(BRN)

(BR)

(YEL)

(OR) (OR) (OR) (OR)

(RED) (RED)

(OR)

(YEL)

(YEL)

(PUR)

(OR)

(PUR) (PUR) (PUR) (PUR)(P)

R3 (RED)

(YEL)

(OR)

(OR)

(SEE NOTE #1)

(PUR) TIMER TO CLOSE (PUR)

(OPTIONAL)

(WH

EN

PR

ES

EN

T)

230V

BR

AK

E

(GY)(GY)

RADIO TO

A1 A2

A2 A1

(YEL)

NUTWIRE

8

5YEL

BL

PUR1

BL/BK

BL/BK

230 VOLT - 1 PHASEMOTOR CONNECTION

NOTE:1. Voltage same as line voltage.

IR

C NO(R)

IR

C NO(Y)

115V MODELS

IR (BK)

230V MODELS

(GY)

4GY

2 3

(WH

EN

PR

ES

EN

T)

115V

BR

AK

E

8

5YEL

BL

PUR1

BL/BK

BL/BK

115 VOLT - 1 PHASEMOTOR CONNECTION

4GY

3

2

(SEE NOTE #1)

(BRN)NC C

HAND CHAININTL'K SWITCH(WHEN PRESENT)

(RED)

C2 WIRING - Constant Presssure to CloseRED WIRE ON TERMINAL #2 (Shipped from Factory)B2 WIRING - Momentary Contact to CloseMOVE RED WIRE FROM TERMINAL #2 TO TERMINAL #3

*CLOSE CONTROL WIRING OPTIONS

- Shipped from Factory

*

12

13

SINGLE PHASE WIRING DIAGRAM

- Shipped from Factory

EXT.INTLK.

AND CLOSETO OPEN

SAFETY

BRAKE( WHEN REQ'D )

YELL

OW

( OPTIONAL )

BL-BK

BL-BK

BL-BK

BL-BK

P

BL

Y

P

GY

Y

GY

BL

BL-BK

BL-BK

TO M

OTO

R

PURP

LE

GRE

Y

BLUE

115V. CONNECTION

254

8

1

3

1

8

54

3

2

( WHE

N RE

QUI

RED

)

STOP

ORA

NGE

115V

. BRA

KE

( WHE

N RE

QUI

RED

)

230V

. BRA

KESO

LENO

IDSO

LENO

ID

1

GRE

YO

RANG

ERE

D

OPEN

CLOSE

32

PURP

LEPU

RPLE

ORA

NGE

RED

4

ORA

NGE

YELL

OW

BROW

N

CLOSE

PURPLEPURPLE

INTERLOCKREDORANGEORANGE

C NO R1RELAY

NC

RED

BLACK

ORANGE

YELLOW

3

1OPEN

A1

513

WHITE

PURPLE

BLUE

PURPLE

YELLOWRED

GREY

1

A113

35

WHITE

SEE NOTE 2

BLACK

WHITEYELLOW

42

A2

614

PURPLEPURPLE

SUPPLY

SUPPLY

BLACKBLACK

2

ONLY

115V.ONLY

230V.

A214

46

RED

AUX.TERMINALBLOCK FOR RADIO

OPEN

CL/SNC

AUX.OPENC

L/S NCNO

RECEIVERRADIO

ORANGE

ORANGE

R3

PURPLEORANGE

YELLOW

REDRED

R2

R1

YELLOW

ORANGE

GROUND

1 PHASEPOWER IN

L1

L1

YELL

OW

5 7

ORA

NGE

BROW

N

YELL

OW

10

GRE

Y

BLAC

K

L2

L3L2

WHI

TE

BLAC

K

WHI

TE

OVER LOAD

WIRE NUT

NO

BLACKPURPLE

RED

YELLOW

IRRELAY

NC

ORANGEBLACK

BLACKBLACK

LOAD24VAC

YELLOW

WHITET1

C

LINE

( OPTIONAL )

SAFETY

PURPLETO TERMINAL #3

GREY

GREY

BLACK

BROWN

PURPLE

PURPLEC

NC L/SCLOSE

CNC

L/S

PURPLEPURPLETO TERMINAL #2

TIMER

CONTACTOR

CLOSELIMIT SWITCHES

OPENLIMIT SWITCHES

230V. CONNECTION

SEE NOTEBELOW

EDGE

*

**

**

**

C2 WIRING: Constant Presssure to Close RED WIRE ON TERMINAL #2 (Shipped from Factory)

B2 WIRING: Momentary Contact to Close MOVE RED WIRE FROM TERMINAL #2 TO TERMINAL #3

*

CLOSE CONTROL WIRING OPTIONS

*

NOTES:1) TO REVERSE MOTOR DIRECTION: INTERCHANGE PURPLE & GRAY MOTOR LEADS AT CONTACTOR 1 & 3.2) WIRE MUST BE REMOVED FOR 23OV 1PH OPERATION.**- Transformer Primary & Relay Voltage same as Line Voltage.

1742-1

4 3 5 6

1 24 3

2 1

6 5

L3

L2

(GY)

(PUR)

(YEL)

EXTERNALSTOP3 4 5 T1

24VACSEC.

PRI.

AUX. CLOSELIMIT SWITCH

NC C

1

7

10

OPEN

SAFETY EDGE

OPEN & CLOSELIMIT SWITCH

AUX. OPENC

NO

NC

LIMIT SWITCH

NC C

TO MOTORPOWER IN

L1

3 PHASE

INTERLOCK

OP

R1

OP

OP

CL

CL OP

CL

OP14

13

OVERLOAD

R1

OPEN & CLOSE

R2R1

OPEN

CLOSE2

14

13

CL

CLLIMIT SWITCH

NC

CLOSE

C

R1

(BK)

(BK)

(BK)

(BRN)

(BR)

(YEL)

(OR) (OR) (OR) (OR)

(RED) (RED)

(OR)

(YEL)

(YEL)

(PUR)

(OR)

(PUR) (PUR) (PUR) (PUR)(PUR)

R3 (RED)

(BRN)

(YEL)

(OR)

(OR)

(SEE NOTE #1)

(PUR)TIMER TO CLOSE (PUR)

(OPTIONAL)

(WH

EN

PR

ES

EN

T)

230V

BR

AK

E

(GY)(GY)

RADIO TO

A1 A2

A2 A1

(YEL)

NUTWIRE

2

3YEL

BRN

BRN

PUR

GY 1

69

BL/BK

BL/BK

O/L

47

8 5

(WH

EN

PR

ES

EN

T)

230V

BR

AK

E

2

3YEL

BRN

BRN

PUR

GY 1

69

BL/BK

BL/BK

O/L

47

8 5

230 VOLT - 3 PHASEMOTOR CONNECTION

460 VOLT - 3 PHASEMOTOR CONNECTION

(SEE NOTE #2)

- SEE NOTE #2*

* *

(BK) (BK)

OVERLOAD(SEE NOTE #2)

NC C

HAND CHAININTL'K SWITCH(WHEN PRESENT)

(BRN)

(WH

EN

PR

ES

EN

T)

575V

BR

AK

E

BRN

BRN

3

BL/BK

BL/BK

O/L

1

2 *YEL

PUR

GY

575 VOLT - 3 PHASEMOTOR CONNECTION

(RED) (RED)

C2 WIRING - Constant Presssure to CloseRED WIRE ON TERMINAL #2 (Shipped from Factory)B2 WIRING - Momentary Contact to CloseMOVE RED WIRE FROM TERMINAL #2 TO TERMINAL #3

*CLOSE CONTROL WIRING OPTIONS

- Shipped from Factory

*

NOTE:1. Voltage same as line voltage2. Overload in motor for models up to 3/4 Hp, located in limit box for 1 Hp and above.

14

THREE PHASE SCHEMATIC DIAGRAM 1742-3

15

THREE PHASE WIRING DIAGRAM 1742-3

C NO NCR1RELAY

BRAKE( WHEN REQ'D )

YELL

OW

( OPTIONAL )

BL-BK

BL-BK

TO M

OTO

R

PURP

LEG

REY

ORA

NGE

GRE

YO

RANG

ERE

D

PURP

LEPU

RPLE

ORA

NGE

RED

ORA

NGE

YELL

OW

BROW

N

PURPLEPURPLE

INTERLOCK

REDORANGEORANGE

RED

ORANGE

ORANGE

31

OPEN

A1

513

WHITE

PURPLE

PURPLE

YELLOWRED

GREY

1

A113

35

BLACK

YELLOW

42

A2

614

PURPLEPURPLE

BLACK

2

A214

46

AUX.TERMINALBLOCK FOR RADIO

OPEN

CL/S NC

AUX.OPENC

L/S NCNO

RECEIVERRADIO

ORANGE

R3

PURPLEORANGE

YELLOW

REDRED

R2

R1

YELLOW

ORANGE

YELL

OW

ORA

NGE

BROW

N

YELL

OW

GRE

Y

BLAC

K

WIRE NUT

LOAD24VAC

YELLOW

BLACKXFMR

LINE

( OPTIONAL )

SAFETY

PURPLETO TERMINAL #3

GREY

GREY

BLACK

BROWN

PURPLE

PURPLEC

NC L/SCLOSE

CNC

L/S

PURPLE

TO TERMINAL #2

TIMER

PURPLE

BLACK

BLACK

BLAC

K

BLAC

K

T1 L1

L2T2

T3 L3

95

96

OVERLOAD( 1 HP & ABOVE ONLY )

BROWN

ORANGE

BLACK

BROW

N

BROW

N

BROWN

( 3/4 HP & BELOW)

BROWN

( 1 HP & ABOVE )

( 3/4 HP & BELOW )

( 3/4 HP & BELOW )

SEE NOTE:

EXT.INTLK.

AND CLOSETO OPEN

SAFETY

STOP

1

OPEN

CLOSE

32 4

GROUND

3 PHASEPOWER IN

L1

L1

5 7 10

L2

L3L2

EDGE

*

CLOSELIMIT SWITCHES

OPENLIMIT SWITCHES

L3

CLOSEPURPLE

ORANGE

**

**

- Shipped from Factory

C2 WIRING: Constant Presssure to Close RED WIRE ON TERMINAL #2 (Shipped from Factory)

B2 WIRING: Momentary Contact to Close MOVE RED WIRE FROM TERMINAL #2 TO TERMINAL #3

*

CLOSE CONTROL WIRING OPTIONS

*

( WH

EN R

EQU

IRED

)23

0V. B

RA

KE

SOLE

NO

ID

GY

BRY

BR

P

460V. CONNECTION

93 6

230V. CONNECTION

8

71

2

4

5

BL-BK

J

BL-BK

J

GY

BRY

BR

P

93 6

8

71

2

4

5

OV

ER

LO

AD

(UP

TO

3/4

HP

)

BL-BK

J

BL-BK

J

( WH

EN R

EQU

IRED

)23

0V. B

RA

KE

SOLE

NO

ID

OV

ER

LO

AD

(UP

TO

3/4

HP

)

GY

BRY

BR

P

575V. CONNECTION

3

1

2

BL-BK

BL-BK

J

( WH

EN R

EQU

IRED

)57

5V. B

RA

KE

SOLE

NO

ID

OV

ER

LO

AD

(UP

TO

3/4

HP

)

NOTES:1) TO REVERSE MOTOR DIRECTION: INTERCHANGE ANY 2 OF THE 3 POWER WIRES AT L1, L2 & L3, OR EXCHANGE PURPLE & GRAY MOTOR LEADS AT CONTACTOR 1 & 3 (3PH UNITS ONLY).**- Transformer Primary Voltage same as Line Voltage.

16

S7

3

L8

4

S4

1

10

L7

2

8

6

9

7

L6

L4

L2

L3

L1

S1

S6

S8

S2S5

S9

S3

L5

L2

5

ILLUSTRATED PARTS – ELECTRICAL BOX

25-2

006

6 Am

p

25-2

008

8 Am

p

25-2

010

10 A

mp

25-2

015

15 A

mp

25-2

025

25 A

mp

25-4

002-

5K1.

6-2.

5 Am

p

25-4

003-

K2.

6-3.

7 Am

p

25-4

004-

K2.

5-4.

0 Am

p

25-4

008-

K5.

5-8.

0 Am

p

REPAIR PARTS KITS – ELECTRICAL BOX

OVERLOADS

OPERATORGT5011MGT5021MGT5025MGT7511MGT7521MGT7525MGT1011MGT1021MGT1023MGT1043MGT1053MGT1025MGT1038MGT1511MGT1521MGT1523MGT1543MGT1553MGT1525MGT1538MQty

142244822

ItemS1S2S3S4S5S6S7S8S9

P/N 10-1001310-1255310-1280618-1003623-1004131-1254282-PX04-2082-PX06-1684-LH-06

DescriptionDepress PlateNut Plate, SwitchBackup PlateSpring, Depress PlateLimit SwitchStandoff, Limit SwitchScrew, #4-40 Pan Head PhillipsScrew, #6-32 x 1” Pan Hd PhillipsLocknut, #6-32 Nylon Hex

K72-12418 LIMIT SHAFT ASSEMBLY KITItemL1L2L3L4L5L6L7L8

DescriptionLimit ShaftFlange Bearing, 3/8” I.D.Limit NutSprocket 48B18 x 3/8” BoreWasher, Shim 3/8” I.D. x .050 THK.Washer, Shim 3/8” I.D. x .010 THK.Roll Pin, 1/8 DIA. x 1 LongE Ring, 3/8”

Qty12211411

K75-12511 LIMIT SWITCH ASSEMBLY KIT

P/N 11-1002112-1002813-1002415-48B18AXX80-1002580-1002686-RP04-10087-E-038

* COMPLETE ELECTRICAL BOX KITSItem

123456789

10

DescriptionContactorElectrical Box (No Tabs)Electrical Box Cover(See Individual Components)(See Individual Components)24VAC DPDT Relay(See Overloads)(See Overloads)Terminal Block, RadioTerminal Block, 10 Position

Qty1111111111

P/N 03-8024-K10-1390010-1011521-5xxx24-xxx-x24-24-125-2xxx25-4xxx42-1004042-110

* Electrical Box Kits include parts from K72-12510 and K75-12511

Below are replacement kits available for your operator. For replacement of electrical box, motor or brake components be sureto match model number of your unit to kit number below to ensure proper voltage requirements. Optional modificationsand/or accessories included with your operator may add or remove certain components from these lists. Please consult aparts and service representative regarding availability of individual components of kits specified below. Refer to page 11 forall repair part ordering information.

Motor KitsK20-1050C2 Models GT5011M, GT5021MK20-3050C4 Models GT5023M, GT5043M, GT5038MK20-3050M5 Model GT5053MK20-5150C6 Models GT5025MK20-1075C2 Models GT7511M, GT7521MK20-3075C4 Models GT7523M, GT7543M, GT7538MK20-3075M5 Model GT7553MK20-5175C6 Model GT7525MK20-1100C2 Models GT1011M, GT1021MK20-3100C4 Models GT1023M, GT1043M, GT1038MK20-3100M5 Model GT1053MK20-5110C6 Model GT1025MK20-1150C2 Models GT1511M, GT1521MK20-3150C4 Models GT1523M, GT1543M, GT1538MK20-3150C5 Model GT1553MK20-5115C6 Model GT1525M

Individual Components21-5115 Transformer, 115V Operators21-5230 Transformer, 230V Operators21-5460 Transformer, 380-460V Operators21-5575 Transformer, 575V Operators

24-115-1 Relay, 115V 1Ph Operators24-230-5 Relay, 230V 1Ph Operators

ITEM 8 ITEM 9

Complete Electrical Box Replacement Kits To order a complete electrical box replacement kit, add aK- prefix to the model number of your operator. Forexample:

GT5011M (Operator) = K-GT5011M (Elec. Box Kit)

Electrical Box Sub-Assembly KitsK72-12510 Limit Shaft AssemblyK75-12511 Limit Switch Assembly

Shaft Assembly KitsK75-12858 Torque Limiter AssemblyK72-12859 Drive Shaft Assembly

Brake Assembly KitsK75-12855 115V ModelsK75-12856 230-460V ModelsK75-12857 575V Models

Hardware, Track, and Drive Chain KitsK75-12870 Straight and Curved Arm AssemblyK77-10201 Hardware KitSee Page 19 Drive ChainSee Page 19 Door Track

18

ILLUSTRATED PARTS – MODEL GT

19

REPAIR PARTS KITS – MODEL GTRefer to the parts lists below for replacement kits available for your operator. If optional modifications and/or accessoriesare included with your operator, certain components may be added or remove from these lists. Individual components ofeach kit may not be available. Please consult a parts and service representative regarding availability of individual com-ponents. Refer to page 11 for all repair part ordering information.

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION QTY123456789

10

MTG. Bracket, Elec Box-BrakeMTG. Bracket, Elec Box-ReducerDouble BX ConnectorConduit, 3/8”Connector, 90 degreeBushing, Anti-ShortGear ReducerElectrical Box Replacement KitMotor Replacement KitFrame

1111111111

10-1044610-1044727-1018828-1021828-1021928-1022032-10540See Page 17See Page 1710-10536

K72-12859 DRIVE SHAFT ASSEMBLY KIT

ITEM PART # DESCRIPTION QTYD1D2D3D4D5D6D7D8D9

D10

Drive Shaft1” Ball BearingSprocket, 40B19 x 1” BoreSprocket, 41B12 x 1” BoreSprocket, 48B18 x 1” BoreDrive Chain, #40 w/ Master LinkLimit Chain, #48 w/ Master LinkKey, 3/16” x 3/16” x 1-3/8”Carriage Bolt, 5/16-18 x 1/2”Nut, 5/16-18 Serrated Flange

1211111244

11-1053712-1200415-40B19LGF15-41B12LXX15-48B18LGE19-40047M19-48069M80-207-2382-RN31-0884-FN-31

K75-12858 TORQUE LIMITER ASSEMBLY KIT

ITEM PART # DESCRIPTION QTYC1C2C3C4C5C6C7

Hub, Torque LimiterClutch Pressure PlateBelleville WasherClutch DiscSprocket Assy, 40A25Key, 1/4” x 1/4” x 1-1/2”Hex Jam Nut, 1-1/2”-12

1242111

07-1053407-1053518-1053939-1054175-40A2580-207-1984-JH-150

K77-10201 HARDWARE KIT

ITEM PART # DESCRIPTION QTYH1H2H3H4H5H6H7H8

Curved ArmDoor BracketHeader BracketHeader Pivot PinSlider AssemblyFront Idler AssemblyStraight Arm AssemblyTrack Spacer Assembly

11111112

10-1020310-1020410-1020511-1013075-1017075-1017475-1021475-10259

BRAKE ASSEMBLY KITS

ITEM PART # DESCRIPTION QTYB1B2B3B4B5B6B7B8B9

B10B11B12B13B14B15B16

Brake HubBrake Solenoid CoverBrake Release LeverBrake Disc, Zinc PlatedSpring Cup for Brake AssemblyBrake StudSpring, Compression x .875” LongChain, #48 x 1 PitchBrake Solenoid, 115VBrake Solenoid, 230-460VBrake Solenoid, 575VSpacer, .20 I.D. x .31 LongBrake Mounting Plate AssemblyBrake Pressure Plate AssemblyFeather KeyScrew, #10-32 x 1/2” Serrated FlangeCotter Pin, 1/8” x 1-3/4” Zinc PlatePush on Fastener, 5/8” Int. Star

111144411112111821

07-1017910-1018710-1019010-1019111-1019211-1019318-1019419-4800122-12022-24022-57531-1018675-1018075-1018480-900182-WX10-08T86-CP04-11287-P-062

KIT PART # FOR OPERATOR(S)71-B120 115 Volt Models71-B240 230-460 Volt Models71-B575 575 Volt Models

K75-12870 STRAIGHT AND CURVED ARM ASSY

H1H7

Curved ArmblyStraight Arm Assembly

11

10-1020375-10214

Doors to 8’Doors to 10’Doors to 12’Doors to 14’Doors to 16’Doors to 18’Doors to 20’Doors to 22’Doors to 24’

10-580810-581010-581210-581410-581610-581810-582010-582410-5824

PART #Track, 11’ LengthTrack, 13’ LengthTrack, 15’ LengthTrack, 17’ LengthTrack, 19’ LengthTrack, 21’ LengthTrack, 23’ Length

Track, 27’-6” LengthTrack, 27’-6” Length

19-511219-511219-511219-511419-511619-511819-512019-512419-5124

DOOR TRACK AND DRIVE CHAIN KITS

PART #

DOOR TRACK #41 DOOR DRIVE CHAINDOOR HEIGHT DESCRIPTION

K72-18989 IDLER SHAFT ASSEMBLY KITITEM PART # DESCRIPTION QTYS1S2S3S4S5S6S7

IDLER SHAFTBEARINGPULLEYHEX BOLT, 3/8-16” X 3/4” LONGFLATWASHER, 3/8”LOCKWASHER, 3/8”E-RING

1112222

11-1894812-1017217-1017382-HN38-1285-FW-3885-LS-3887-E-075

OPEN TIMER TO CLOSE

3 BUTTON STATION or 3 POSITION KEYSWITCH w/ SPRING RETURN TO CENTER AND STOP BUTTON

2 OR MORE KEY LOCKOUT

R1 R2 R3

1 2 3 4

Stop

Close

Open

Stop

Close

Open

1 2 3 4

Stop

Close

Open

2 BUTTON STATION or 3 POSITION KEYSWITCH w/ SPRING RETURN TO CENTER

STANDARD

1 2 4

Close

Open

ALL CONTROL WIRING TYPES

2 OR MORE1 2 4

Close

Open

Close

Open

OPEN / CLOSE

3 7

RADIO CONTROL

1 BUTTON STATION orANY AUXILIARY DEVICE

RESIDENTIAL RADIO CONTROLSSENSING DEVICE TO REVERSE OR STOP

EXTERNAL INTERLOCK

3 10

4 5 4 5

Remove JumperWhen Interlock is Used

ONE 2 OR MORE

STANDARD

1 2 3 4

Stop

Close

Open

IMPORTANT NOTES:1) The 3-Button Control Station provided must be connected for operation.2) If a STOP button is not used, a jumper must be placed between termianls 3 and 4.3) Auxiliary control equipment may be any normally open two wire device such as pullswitch, single button, loop detector, card key or such device.

Keyswitch

Sensing Device

ALL CONTROL WIRING TYPESB2 or T1

WIRING TYPES ONLY

ALL CONTROL WIRING TYPEST1 WIRING - RADIO TO OPEN ONLY

*

*

EXTERNALTERMINAL BLOCK

ALL CONTROL WIRING TYPESALL CONTROL WIRING TYPES

ALL CONTROL WIRING TYPES

TIMER TO CLOSE w/ WARNING LIGHT

ALL CONTROL WIRING TYPEST1 CONTROL WIRING ONLY

11 12

Timer DefeatSwitch

13 14

Power Supply forWarning Light

Auxiliary Terminal Block

Warning Light will activate 15 sec. before door closes.

ALL CONTROL WIRING TYPES

ATTENTION ELECTRICIAN:USE 16 GAUGE OR HEAVIER WIRE

FOR ALL CONTROL CIRCUIT WIRING.

SEE NOTE #2SEE NOTE #2 SEE NOTES#2 AND #3

CONTROL CONNECTION DIAGRAM

c 2000, The Chamberlain Group, Inc.

All rights Reserved01-10563G