Liftmaster Lgj Owners Manual OWNER'S S

2014-07-19

: Liftmaster Liftmaster-Lgj-Owners-Manual liftmaster-lgj-owners-manual liftmaster pdf

Open the PDF directly: View PDF .
Page Count: 24

OWNER'S MANUAL

MODELS:

LGJ & MGJ

INDUSTRIAL DUTY DOOR OPERATOR

NOT FOR RESIDENTIAL USE

LISTED DOOR OPERATOR

41B6

Serial #

(located on electrical box cover)

Installation Date

Wiring Type

2 YEAR WARRANTY

c2003, The Chamberlain Group, Inc.

MGJ CONTROL CONNECTION DIAGRAM

01-11452H

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

Open

Stop

Open

1 2 3 4

Stop

Open

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

STANDARD

1 2 4

Open

ALL CONTROL WIRING TYPES

2 OR MORE

1 2 4

Open

OPEN / CLOSE

RADIO CONTROL

1 BUTTON STATION or

ANY AUXILIARY DEVICE

RESIDENTIAL RADIO CONTROLS

SENSING DEVICE TO REVERSE OR STOP

EXTERNAL INTERLOCK

310

4545

Remove Jumper

When Interlock is Used

ONE 2 OR MORE

STANDARD

1 2 3 4

Stop

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 TYPES B2 or T1

WIRING TYPES ONLY

ALL CONTROL WIRING TYPES

T1 WIRING - RADIO TO OPEN ONLY

EXTERNAL

TERMINAL 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 Defeat

Switch

13 14

Power Supply for

Warning 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

(Refer to page 15 for model LGJ control connections)

MOTOR

TYPE: .................................Intermittent Duty

HORSEPOWER: ................MGJ: 1/2Hp 1 or 3 Phase

LGJ: 1/4 Hp 1 Phase

SPEED:...............................MGJ: 1050 RPM

LGJ: 1725 RPM

VOLTAGE: ..........................MGJ: 115, 60HZ, 1Ph

230V, 50 or 60Hz, 3Ph

230V, 60Hz, 1Ph

380V, 50Hz, 3Ph

460V, 60Hz, 3Ph

LGJ: 115V, 60Hz, 1Ph

CURRENT: See motor nameplate

MECHANICAL

DRIVE REDUCTION: .... . . . . . . . . . . . 40:1 Reduction

(Heavy duty wormgear-in-oil-bath speed reducer)

OUTPUT SPROCKET:...........Size #41

DOOR SPEED: . . . . . . . . . . MGJ: 1Ph, 23RPM

3Ph, 39RPM

LGJ: .1Ph, 43RPM

BEARINGS: .................Heavy duty wormgear-in-oil-bath

speed reducer.

SAFETY

DISCONNECT :.......................Floor level disconnect 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 RECOMMENDED

FOR ALL COMMERCIAL OPERATOR INSTALLATIONS.

REQUIRED WHEN THE 3 BUTTON CONTROL STATION

IS OUT OF SIGHT OF DOOR OR ANY OTHER

CONTROL (AUTOMATIC OR MANUAL) IS USED.

SPECIFICATIONS

ELECTRICAL

RANSFORMER:.............24VAC

CONTROL STATION: ......NEMA 1 three button station.

OPEN/CLOSE/STOP

WIRING TYPE: MGJ: B2-C2 (Factory Shipped)

LGJ: G2 (Factory Shipped)

See pages 13 and 14 for optional control settings and

operating modes.

LIMIT ADJUST: ................Linear driven, fully adjustable

screw type cams. Adjustable to 24 feet.

7.50”

7.00”

11.00”

9.25”

LGJ WEIGHTS AND DIMENSIONS

HANGING WEIGHT:..........80-110 LBS.

10.50”

11.05”

MOUNTING DIMENSIONS

3.00”

5.50”

4.75”

8.90”

7.90”

1.97”

10.88”

4.50”

2.25”

.98”

1.96”

MOUNTING DIMENSIONS

MGJ WEIGHTS AND DIMENSIONS

HANGING WEIGHT:..........80-110 LBS.

ILLUSTRATED PARTS – MODEL MGJ

D13

D10

D15

D13

D12

D14

D11

22 3

2-1/4"

FIGURE 1

Shaft Support Bracket

with Bearing (Not Supplied)

Door Sprocket

TO AVOID DAMAGE TO DOOR AND OPERATOR,

MAKE ALL DOOR LOCKS INOPERATIVE. SECURE

LOCK(S) IN "OPEN" POSITION.

IF THE DOOR LOCK NEEDS TO REMAIN

FUNCTIONAL, INSTALL AN INTERLOCK SWITCH.

DO NOT CONNECT ELECTRIC POWER UNTIL

INSTRUCTED TO DO SO.

KEEP DOOR BALANCED. STICKING OR BINDING

DOORS MUST BE REPAIRED. DOORS, DOOR

SPRINGS, CABLES, PULLEYS, BRACKETS AND

THEIR HARDWARE MAY BE UNDER EXTREME

TENSION AND CAN CAUSE SERIOUS PERSONAL

INJURY. CALL A PROFESSIONAL DOOR

SERVICEMAN TO MOVE OR ADJUST DOOR

SPRINGS OR HARDWARE.

WARNING

CAUTION

WARNING

CAUTION

WARNING

SITE PREPARATIONS

It is imperative that the wall or mounting surface provide

adequate support for the operator.

This surface must:

a) Be rigid to prevent play between operator and

door shaft.

b) Provide a level base.

c) Permit the operator to be fastened securely and

with the drive shaft parallel to the door shaft.

The safety and wear of the operator will be adversely affected

if any of the above requirements are not met.

For metal buildings, fasten 2” x 2” x 3/16” (or larger) angle

iron frames to the building purlins. For proper spacing, retain

.2.75” between for model MGJ, butt purlins together for model

LGJ. See Figure 1.

OPERATOR PREPARATION

IMPORTANT SAFETY NOTES

2.75 for MGJ, butt together for LGJ

Model LGJ: Shipped from the factory for right hand mounting, refer to preparation instructions on page 4 for

Left hand mounting.

Model MGJ: Shipped from the factory for either left hand or right hand mounting. Refer to the last digit in the

model number for handing of your unit. If necessary, model MGJ may also be field modified to

accommodate opposite handing. Refer to the conversion instructions below and on page 4.

REPLACEMENT PART LISTS – MODEL MGJ

Refer to the parts lists below for replacement kits available for your operator. If optional modifications and/or

accessories are included with your operator, certain components may be added or removed from these lists.

Individual components of each kit may not be available. Please consult a parts and service representative

regarding availability of individual components. Refer to page 10 for all repair part ordering information.

K75-12567 DISCONNECT ASSEMBLY KIT

ITEM PART # DESCRIPTION QTY

D10

D11

D12

D13

D14

D15

Disconnect Hub

Bevel Gear Yoke

Disconnect Support Bracket

Release Lever

Disconnect Shaft MGJ

Sprocket, 41B19 x 1.25 Bore

Compression Spring

12ft. Of Sash Chain

Disconnect Key 1/4 x 1/4 x 7/8

Washer, 1” I.D. x 1/16” Thick

Screw, #10-32 Hex Head Socket

#10 Lock Washer ZP

Cotter Pin, 1/8” x 1-3/4” Long

Roll Pin, 1/8” Dia. x 1” Long

E Ring, 1” Plated

07-11418

10-11023

10-11358

10-11394

11-11361

15-11377

18-10467

19-8A-12

80-11416

80-206-11

82-SH10-12

85-LS-10

86-CP04-112

86-RP04-100

87-E-100

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION QTY

Brake Mounting Plate

Front Bracket

Gear Reducer, 45:1

Electrical Box

Motor

10-11357

10-11359

32-11414

See Page 20

KEYS

SPRING

DISC

HUB

E RING

SPROCKET

YOKE

BRACKET

SHAFT

DISC

LEVER

MGJ OPPOSITE HANDING PREPARATIONS

1. Remove Disconnect Assembly Components

Remove the master link from the limit chain, remove

the chain and set it aside.

Remove the two E Rings securing the sprocket on the

gear reducer shaft. Remove the screws securing the

yoke to the disconnect shaft, set the yoke aside.

421

MGJ ELECTRICAL BOX - ILLUSTRATED PARTS

S6 S3 S5

LGJ LEFT HAND MOUNTING PREPARATIONS

1. Reconfigure Disconnect Chain Assembly

The default configuration for the disconnect chain assembly

is shown in Figure 1. This configuration allows the chain to

hang freely when the operator is mounted on right side only.

To insure smooth operation of the disconnect chain

assembly when mounted motor side down, reconfigure as

described below and as shown in figures 2 and 3.

1. Disconnect the key ring from the release cable.

2. Thread the release cable through the slot on the

outermost edge of the support bracket, as shown in Figure

3. Re-attach the key ring and sash chain to the end of the

loop of release cable.

HOUR GLASS

CABLE SLEEVE

RELEASE

CABLE

SLOT

SUPPORT

BRACKET

KEY RING

SASH CHAIN

FIGURE 1

LGJ Operators are assembled at the factory to be installed in a right hand (motor side up) configuration. To install an

LGJ Operator on the left hand side of your door (motor side down), complete the three steps described below.

2. Set Limit Switch Direction

Locate Switch #1 on PCB in the electrical box. Place

pole #2 of Switch #1 in the “OFF” position. With this

setting limit switch labeled “A” is the close switch, limit

switch labeled “B” is the open switch.

IMPORTANT: Refer to page 9 for for complete

instructions on setting of limit switches.

3. Affix Electrical Box Cover Caution Label

Place the caution label on electrical box cover such that

the text is read in the opposite direction of silkscreen.

Disconnect Cable as shipped from the factory

Remove the three cotter pins from the disconnect shaft.

Do not discard the pins. Slide the disconnect shaft out

of the support bracket. The release lever will now be

free inside the motor frame. Remove the release lever

and sash chain from the motor frame. Slide the

disconnect hub, compression spring, and flatwasher

from the end of the gear reducer shaft. Remove the

disconnect support bracket by first removing the the two

gear reducer housing screws. Replace the screws in the

gear reducer and firmly tighten.

2. Re-assemble Disconnect Assembly

Remove the two screws on the opposite side of the gear

reducer and mount the disconnect support bracket with

the notched side facing the motor. For the remainder of

the installation, follow the steps outlined above in

reverse order, referring to the illustration as necessary.

Below are replacement kits available for your operator. For replacement of electrical box, motor or brake

components be sure to match model number of your unit to kit number below to ensure proper voltage

requirements. Optional modifications and/or accessories included with your operator may add or remove certain

components from these lists. Please consult a parts and service representative regarding availability of individual

components of kits specified below. Refer to page 10 for all repair part ordering information.

20 5

REPLACEMENT PART KITS MGJ

NOTES:

1) Reversing Contactor (03-11112), Used only on three

phase operators. Single phase operators use relays.

2) Capacitor (29-10338), Capacitor Clamp (10-11421)

and Resistor (29-2) used only on single phase

operators.

Complete Electrical Box Replacement Kits

K-MGJ5011L Model MGJ5011L

K-MGJ5023L Model MGJ5023L

K-MGJ5025L Model MGJ5025L

K-MGJ5038L Model MGJ5038L

K-MGJ5043L Model MGJ5043L

K-MGJ5011R Model MGJ5011R

K-MGJ5023R Model MGJ5023R

K-MGJ5025R Model MGJ5025R

K-MGJ5038R Model MGJ5038R

K-MGJ5043R Model MGJ5043R

Electrical Box Sub-Assemblies

K72-12565 MGJ Limit Shaft Assembly

K75-12566 MGJ Limit Switch Assembly

COMPLETE ELECTRICAL BOX KITS

P/N

03-11112

10-11403

10-11420

10-11421

(See Var. Comp.)

24-24-1

29-10338

29-2

42-10040

42-110

11-11373

12-10458

13-10024

15-48B07AXX

80-10026

85-FW-38

86-RP04-012

87-E-038

10-11419

18-10036

23-10041

31-13062

82-PX06-16

82-PX06-19

84-DT-06

84-LH-06

Item

Qty

Description

Reversing Contactor (See Notes)

Electrical Box Cover

Electrical Box

Capacitor Clamp (See Notes)

Transformer

24V DPDT Relay

Capacitor, 7MFD (See Notes)

Resistor, 20 Ohm

Terminal Block Assy, 3 Lug

10 Position Terminal Block

MGJ Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Washer, Shim 3/8” I.D. x .01

Flatwasher, 3/8”

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Depress Plate

Spring, Depress Plate

SPDT Limit Switch

Spacer, .115” ID x 5/8” Long

Screw, #6-32 x 1” Pan HD PH

Screw, #6-32 x 1-3/8” Pan HD PH

Nut, #6-32 Double Tinnerman

Locknut #6-32

K72-12565 LIMIT SHAFT ASSEMBLY KIT

Item

Description

MGJ Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Washer, Shim 3/8” I.D. x .01

Flatwasher, 3/8”

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Qty

K75-12566 LIMIT SWITCH ASSEMBLY KIT

P/N

11-11373

12-10458

13-10024

15-48B07AXX

80-10026

85-FW-38

86-RP04-012

87-E-038

Item

Description

Depress Plate

Spring, Depress Plate

SPDT Limit Switch

Spacer, .115” ID x 5/8” Long

Screw, #6-32 x 1” Pan HD PH

Screw, #4-40 x 1-1/2” Pan HD PH

Nut, #6-32 Double Tinnerman

Locknut #6-32

Qty

P/N

10-11419

18-10036

23-10041

31-13062

82-PX06-16

82-PX04-20

84-DT-06

84-LH-06

VARIABLE COMPONENT KITS

P/N

21-5115

21-5230

21-5460

Description

Transformer, 115V

Transformer, 230V

Transformer, 460V

MGJ5011

MGJ5023

MGJ5043

MGJ5025

MGJ5038

Item

FIGURE 3

LABEL

SILK

SCREEN

HOUR GLASS

CABLE SLEEVE

RELEASE

CABLE

SUPPORT

BRACKET

SLOT

SASH CHAIN

KEY RING

FIGURE 2

Disconnect Cable Re-routed for Left Hand Mounting

Motor Kits

K20-1050C1M Model MGJ5011

K20-3050C4M Models MGJ5023,MGJ5038,MGJ5043

K20-5150C6M Model MGJ5025

Disconnect Assembly Kit

K75-12567 Model MGJ Operators

619

LGJ ILLUSTRATED PARTS

D11

D12

D10

D13

1a. Wall Mounting

The operator should generally be installed below

the door shaft, and as close to the door as

possible. The optimum distance between the door

shaft and operator drive shaft is between 12” - 15”.

Refer to Figure 3.

OPERATOR MOUNTING

IMPORTANT: The shelf or bracket must

provide adequate support, prevent play

between operator and door shaft, and permit

operator to be fastened securely and with the

drive shaft parallel to the door shaft.

1b. Bracket or Shelf Mounting

The operator may be mounted either above or

below the door shaft. The optimum distance

between the door shaft and operator drive shaft is

between 12” - 15”. Refer to Figure 4.

1c. Place door sprocket on the door shaft. Do not

insert the key at this time.

2. Wrap drive chain around door sprocket and join

roller chain ends together with master link.

3. Raise operator to approximate mounting position

and position chain over operator sprocket.

4. Raise or lower operator until the chain is slightly

taut (not tight). Make sure the operator output

shaft is parallel to door shaft and sprockets are

aligned. When in position, secure the operator to

wall or mounting bracket.

5. Align sprockets and secure, (see Figure 5).

FIGURE 4FIGURE 3

Before your operator is installed, be sure the door has been properly aligned and is working smoothly. The

operator may be wall mounted or mounted on a bracket or shelf. If necessary, refer to the operator preparations

on page 3. Refer to the illustration and instructions below that suits your application.

Typical Right Hand

Wall Mounted Operator

OPTIONAL (LGJ)

Mounting Bracket

Be sure door

sprocket is properly

aligned with drive

before securing to

the shaft.

Chain Keeper

FIGURE 5

OPTIONAL (MGJ)

Mounting Bracket

P/N 10-9098

REPLACEMENT PART LISTS – MODEL LGJ

Refer to the parts lists below for replacement kits available for your operator. If optional modifications and/or

accessories are included with your operator, certain components may be added or removed from these lists.

Individual components of each kit may not be available. Please consult a parts and service representative

regarding availability of individual components. Refer to page 10 for all repair part ordering information.

K75-12583 DISCONNECT ASSEMBLY KIT

ITEM PART # DESCRIPTION QTY

D10

D11

D12

D13

Bevel Gear Yoke

Disconnect

Release Lever

Retaining Plate

Disconnect Shaft

Sprocket, 48B14/41B14

Compression Spring

Key, 1/4 x 1-1/2” Long

Screw, #10-32 x 1/2” Hex

Flatwasher, 3/4”

Cotter Pin 1/8” x 1-3/4” Long

Roll Pin, 1/8” Dia. x 1” Long

E Ring 3/4”

10-11023

10-11393

10-11394

10-11399

11-11424

15-11379

18-11427

80-207-19

82-HX10-08T

85-FW-75

86-CP04-112

86-RP04-100

87-E-075

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION QTY

Support Bracket

Mounting Bracket (LH)

Mounting Bracket (RH)

Gear Reducer, 40:1

Electrical Box

Motor

Nut

Stud

10-11397

10-11389-1

10-11398-2

32-11435

See Page 16

84-FN-10

84-FN-19144

EMERGENCY MANUAL OPERATION

This operator a floor level disconnect chain to

disconnect the door from the door operator allowing

for manual operation of the door in case of

emergency or power failure.

1. To disengage, pull the chain and secure in the

disengaged position by slipping the end through the

keyhole bracket mounted on the wall. Or if

emergency egress device is used, pull handle to

disengage operator from door.

2. The door may now be pushed up or pulled down

manually. Release the disconnect chain to operate the

door again electrically.

Keyhole Bracket

6. Mount Chain Keeper / Keyhole Bracket

Using suitable hardware mount the chain keeper

approximately 4 feet above the floor, near the free

hanging chain. Remove disconnect sash chain

from bag and place the end through the keyhole

in the the chain keeper. Remove excess links if

necessary.

TURN OFF POWER TO THE OPERATOR BEFORE

MANUALLY OPERATING YOUR DOOR.

WARNING

CAUTION

WARNING

Pull sash chain and secure

in bracket for manual

operation of the door.

TO AVOID SERIOUS PERSONAL INJURY OR DEATH

FROM ELECTROCUTION, DISCONNECT ELECTRIC

POWER BEFORE MANUALLY MOVING LIMIT NUTS.

WARNING

CAUTION

WARNING

MGJ LIMIT SWITCH ADJUSTMENT

MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE

PROCEEDING WITH ADJUSTMENTS.

SENSING EDGES

All types of sensing edges with an isolated normally

open (N.O.) output are compatible with your operator.

This includes pneumatic and electric edges. If your

door does not have a bottom sensing edge and you

wish to purchase one, contact the supplier of your

operator.

If not pre-installed by the door manufacturer, mount the

sensing edge on the door according to the instructions

provided with the edge. The sensing edge may be

electrically connected by either coiled cord or take-up

reel. Refer to the steps below

Important Notes:

a) Proceed with Limit Switch Adjustments before

making any sensing edge wiring connections to

operator as described below.

b) Electrician must hardwire the junction box to the

operator electrical box in accordance with local

codes.

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)

IT IS STRONGLY RECOMMENDED THAT A

SENSING EDGE OR OTHER ENTRAPMENT

PROTECTION DEVICE BE USED IN

CONJUNCTION WITH THIS OPERATOR.

TAKE-UP REEL: Take-up reel should be installed 12"

above the top of the door.

COIL CORD: Connect operator end of coil cord to

junction box (not supplied) fastened to the wall

approximately halfway up the door opening.

If other problems persist, call our toll-free number for

assistance - 1-800-528-2806.

Retaining Plate

CLOSE Limit Switch

SAFETY

(Aux. Close) Limit Switch

OPEN Limit Switch

1. To adjust limit nuts depress retaining plate to allow

nut to spin freely. After adjustment, release plate

and ensure it seats fully in slots of both nuts.

2. To increase door travel, spin nut away from

actuator. To decrease door travel, spin limit nut

toward actuator.

3. Adjust open limit nut so that door will stop in open

position with the bottom of the door even with top

of door opening.

4. Repeat Steps 1 and 2 for close cycle. Adjust close

limit nut so that actuator is engaged as door fully

seats at the floor.

Actuator

Aux. OPEN Limit Switch

LGJ ELECTRICAL BOX - ILLUSTRATED PARTS

L5 L9

7L10

L10

16 9

REPLACEMENT PART KITS LGJ SOLID STATE

Item P/N Description QTY

Below are replacement kits available for your operator. Optional modifications and/or accessories included with

your operator may add or remove certain components from these lists. Please consult a parts and service

representative regarding availability of individual components of kits specified below. Refer to page 10 for all

repair part ordering information.

K72-12581 LIMIT SHAFT ASSEMBLY KIT

Item

L10

Description

Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Rotor for RSL Assembly

Washer, Shim

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Qty

K75-12582 LIMIT SWITCH ASSEMBLY KIT

Complete Electrical Box Replacement Kit

K-LGJ2511 Model LGJ2511

Electrical Box Sub-Assembly Kits

K72-12581 LGJ Limit Shaft Assembly

K75-12582 LGJ Limit Switch Assembly

K79-11384 LGJ PC Board Assembly

P/N

11-11425

12-10458

13-10024

15-48B07AXX

81-11443

80-10053

80-10025

80-10026

86-RP04-012

87-E-038

Item

Description

Depress Plate

Spring, Depress Plate

Limit Switch

Standoff, #4-40 Threaded x .19 Long

Screw, #4-40 x 1” Pan Head Ph

Screw, #6-32 x 1” Pan Head Ph

Locknut #6-32

Qty

P/N

10-11391

18-10036

23-10041

23-11442

80-11445

82-PX04-16

82-PX06-16

84-LH-06

10-11390M1

10-11392M1

21-13395

29-7642

42-9306

42-13378

75-11395

79-11378

80-10027

11-11425

12-10458

13-10024

15-48B07AXX

81-11443

85-FW-38

86-RP04-012

87-E-038

10-11391

18-10036

23-10041

23-11442

80-11446

82-PX04-16

82-PX06-16

84-LH-06

Electrical Box Cover

Electrical Box

Transformer, LGJ 115V-24VAC

Capacitor 220V 42MFD

Terminal Block 6 Pole

J2 Terminal Block, 16 Pole (1-16)

Hall Effect Assembly

PCB Board Assembly

PCB Board Standoff

Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Rotor for RSL Assembly

Flat Washer, 3/8”

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Depress Plate

Spring, Depress Plate

Limit Switch

Standoff, #4-40 Threaded x .19 Long

Screw, #4-40 x 1” Pan Head Ph

Screw, #6-32 x 1” Pan Head Ph

Locknut #6-32

LGJ LIMIT SWITCH ADJUSTMENT

IMPORTANT NOTE: To avoid danger of possible damage to the door and operator, limit switches must be

adjusted to their approximate positions before applying power to the operator.

NEVER PLACE HANDS OR TOOLS INSIDE

OPERATOR OR NEAR MECHANISM UNLESS

POWER IS OFF!!

WARNING

CAUTION

WARNING

A. Set Limit Direction Switch

Open the cover on the electrical enclosure and locate

dip switch SW1 on circuit board. The direction of the

limit travel is determined by the switch SW1 - pole #2

setting.

If your operator is mounted Motor Side Up:

Set dip switch SW1 - pole #2 to “ON” position.

If your operator is mounted Motor Side Down:

Set dip switch SW1 - pole #2 to “OFF” position.

NOTE: See Mounting Options on page 5 to verify the

correct mounting application.

As determined by SW1 - pole 2 setting above, locate

your OPEN and CLOSE limit switches. See the figure

below for switch layout.

For Motor Side Up Mounting: Limit switch -A- is the

OPEN limit. Limit switch -B- is the CLOSE limit.

For Motor Side Down Mounting: Limit switch -A- is

the CLOSE limit. Limit switch -B- is the OPEN limit.

Auxiliary limit switches to control other functions are

also present and should not be confused with the -A-

and -B- limit switches. There are two(2) limit nuts on

the threaded shaft that transverse the shaft as the

operator opens and closes the door. When a limit nut

nears the end of the shaft, it activates a switch(es).

B. Manually raise the door to a nearly open position.

(see page 17, Manual Operation)

C. Depress the limit nut retaining bracket away from

the slots in the limit nuts, and manually rotate to the

OPEN limit nut until it depresses the OPEN limit

switch lever (you can hear the switch click when the

switch contacts transfer). Release the retaining

bracket and be sure it engages in the slots of both

limit nuts.

D. Manually lower the door to a nearly closed

position, and repeat step C with the CLOSE (right)

limit nut.

E. Test Limit Travel

Manually move the door to a half-open position to

avoid damage due to incorrect (dip switch setting)

limit travel. When power is applied, it will cause the

door to OPEN when the limit nuts are traveling in the

direction of the CLOSE limit switch or vice versa. In

either instance, the limit nuts will travel past the limit

switch and may cause damage to both the door and

operator. See Step A for correct setting.

F. After completing the wiring connections on pages

11 thru 13, refer back to step C above for adjustment

of limit switches to their final, exact position.

Limit Switch -A-

(Top Switch)

Dip Switch

SW1

Limit Switch -B-

(Top Switch)

Limit Nut

Limit Switch -A-

(Bottom Switch)

Limit Switch -B-

(Bottom Switch)

If you operator is mounted Motor

Side Up: Set dip switch SW1 - pole

#2 to “ON” position

If your operator is mounted

Motor Side Down: Set dip switch

SW1 - pole #2 to “OFF” position.

When SW1 - pole 2 position is

“ON”: Limit switch -A- is the OPEN

limit. Limit switch -B- is the close

limit.

When SW1 - pole 2 position is

“OFF”: Limit switch -A- is the

CLOSE limit. Limit Switch -B- is the

OPEN limit.

Limit Switch Layout

COMPLETE ELECTRICAL BOX KITS

Motor Kit

K20-1025C1 Model LGJ2511

Disconnect Assembly Kit

K75-12583 Model LGJ2511

10 15

LISTED DOOR OPERATOR

41B6

LGJ CONTROL CONNECTION DIAGRAM

NUMBERED BOXES CORRESPOND WITH TERMINALS ON J1 CONNECTOR STRIP

If Neccessary, Remove The Connector Block From The Board To Secure Each Wire Connection

Connect field wires to any terminal number shown in the respective column. See control

options below for explanation of how field control will function for each terminal number.

OR OR

8435

OPEN

STOP

STANDARD

3 BUTTON CONTROL

10 5

SENSING

EDGE

ANY OPEN

CONTROL

(SEE NOTE)

ANY

OPEN & CLOSE

CONTROL

(SEE NOTE)

OR OR

8435

OPEN

STOP

OR OR

845

OPEN

STOP

OR OR

8435

OPEN

STOP

OR OR

1145

OPEN

OFF

2 BUTTON

CONTROL

(SEE NOTE)

3 BUTTON CONTROL

WITH

KEYED LOCK-OUT

3 BUTTON CONTROL

WITH

MULTIPLE CONTROL STATIONS

WHEN CONNECTING AN

OPEN CONTROL TO: - Open control will require constant

pressure to keep door moving.

- Open control will only require

momentary contact and will set or

reset timer to close.

- Open control will only require

momentary contact and will NOT

set or reset timer to close.

WHEN CONNECTING AN

CLOSE CONTROL TO: - Close control will require constant

pressure to keep door moving.

- Close control will only require

momentary contact.

DO NOT add unless using an

entrapment Protection device.

OPEN AND CLOSE CONTROL OPTIONS

IMPORTANT NOTE: WHEN STOP BUTTON IS NOT USED, ADD A JUMPER FROM

TERMINAL 3 TO TERMINAL 5. 3 5

MAXIMUM RUN TIME: 1 - ON: Maximum run time is 90 seconds.

OFF: Maximum run time is 45 seconds.

MAXIMUM RUN TIME: 2 - ON: CLOSE limit switch B

OFF: CLOSE limit switch A

MAXIMUM RUN TIME: 3 - OFF: (DO NOT ADJUST)

4 - OFF: (DO NOT ADJUST)

CONSULT FACTORY FOR ADJUSTEMENT

SWITCH #1 SETTINGS

SWITCH #2 SETTINGS

TIMER TO CLOSE SWITCH SETTING:

O = ON F = OFF

1 2 3 4

O O O O

F O O O

O F O O

F F O O

O O F O

F O F O

O F F O

F F F O

1 2 3 4

O O O F

F O O F

O F O F

F F O F

O O F F

F O F F

O F F F

F F F F

= Disabled

= 2 sec

= 3 sec

= 13 sec

= 15 sec

= 23 sec

= 32.5 sec

= 43.6 sec

= 72 sec

= 88 sec

= 107 sec

= 126sec

= 148 sec

= 172 sec

= 198 sec

= 224 sec

SETTING SETTINGTIME TIME

SWITCH ADJUSTMENTS



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 PARTS

OUR LARGE SERVICE ORGANIZATION

SPANS AMERICA

INSTALLATION AND SERVICE INFORMATION

ARE AVAILABLE 6 DAYS A WEEK

CALL 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 PARTS

PLEASE 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 EVERY

ITEM PROCEDURE 3 MONTHS 6 MONTHS 12 MONTHS

Drive 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

14 11

SINGLE PHASE SCHEMATIC DIAGRAM for LGJ 1666 CONTROL WIRING

Standard C2 or B2 Wiring

Model MGJ operators are shipped from the factory

with jumper set for C2 wiring, which requires constant

pressure on button to close the door. If momentary

contact in close direction is desired (B2 wiring) you

must include an entrapment protection device. See

close control jumper setting below.

Constant pressure on close (C2 wiring)

Red jumper wire was placed on terminal #2 in

the electrical enclosure. The operator will require

constant pressure on close control in order to keep

door 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 momentary

contact to close the door.

LOCATING THE CONTROL STATION

All 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 or

substituted when requested at the time of order. Mount the control station near the door.

WARNING

CAUTION

WARNING

INSTALL THE CONTROL STATION WHERE THE

DOOR IS VISIBLE, BUT AWAY FROM THE DOOR AND

ITS HARDWARE. IF CONTROL STATION CANNOT BE

INSTALLED WHERE DOOR IS VISIBLE, OR IF ANY

DEVICE OTHER THAN THE CONTROL STATION IS

USED TO ACTIVATE THE DOOR, A REVERSING

EDGE MUST BE INSTALLED ON THE BOTTOM OF

THE DOOR. FAILURE TO INSTALL A REVERSING

EDGE UNDER THESE CIRCUMSTANCES MAY

RESULT IN SERIOUS INJURY OR DEATH TO

PERSONS TRAPPED BENEATH THE DOOR.

WARNING

TO PREVENT ENTRAPMENT

DO NOT START DOOR DOWNWARD

UNLESS DOORWAY IS CLEAR

OPEN

STOP

Control Station

WARNING Notice

Push

Buttons

IMPORTANT: Mount WARNING NOTICE beside or

below the push button station.

MOUNT WARNING NOTICE

DETERMINE WIRING TYPE

Refer to the wiring diagram located on the inside cover the electrical box to determine the type of control wiring.

SPECIAL CONTROL WIRING

If your operator was shipped from the factory with

non-standard control wiring or with optional

accessories that require additional instructions, refer

to the wiring diagram(s) indicated in the special

control wiring data box. When a replacement wiring

diagram is present, wiring diagrams in this manual

will not apply. Refer only to the replacement wiring

diagram for all connections.

IMPORTANT NOTE: If your wiring diagram is

missing, or you are unsure of the wiring type for

your operator, contact the customer service

department @ 1-800-528-2806.

MODEL MGJ

Standard G2 Wiring

Model LGJ operators are supplied with type G2 control

wiring. Study the control features list below to

determine the features and type of control equipment

that may be used with your operator.

Entry Controls:

OPEN control requiring maintained contact.

OPEN control requiring only momentary contact.

CLOSE control requiring maintained contact.

CLOSE control requiring only momentary contact.

OPEN/CLOSE single control requiring momentary

contact..

STOP control requiring momentary contact.

Safety Devices:

External Interlock switch to disable all control

pneumatic safety (N.C.) to STOP while closing Safety

Device to REVERSE while closing Door Lock Sensing

Circuit.

Operational Features:

REVERSE (if closing) with momentary contact on

OPEN.

AUTOMATIC TIMER to CLOSE from any device.

AUTOMATIC TIMER to CLOSE from selected devices.

DELAY REVERSE in either direction for 1 second.

STOP after maximum run time is exceeded.

Note:

Refer to LGJ control connection diagrams on page 15.

MODEL LGJ

(OPTIONAL)

BIMETAL

CLOSE-A

RED AND YELLOW MOTOR WIRES.

* TO REVERSE MOTOR ROTATION INTERCHANGE

PULL SWITCH

OPEN & CLOSE

SAFETY

EDGE

OPEN

AUX.

OPEN

AUX.

L/S

OPEN-B

(OPTIONAL)

CLOSE L/S

3STOP

(HOT) L2

OPEN-A

CAPACITOR

N.O.

100W

MAX.

LIGHT RELAY

SEC.

OPEN L.S.

CLOSE L/S

N.O.

N.C. C

L1 (N)

MOTOR *

10VA.

PR1.

24VAC.

Y/BK

O/L

WIRE NUT

N.C. C

MOVE JUMPER WIRE TO TERMINAL #2

FOR MOMENTARY CONTACT ON CLOSE

WIRE NUT

CLOSE-B

RES.

SINGLE PHASE SCHEMATIC DIAGRAM for MGJ 1754 THREE PHASE SCHEMATIC DIAGRAM for MGJ

4356

(GY)

(PUR)

(YEL)

EXTERNAL

STOP

345 T1

24VAC

SEC.

PRI.

AUX. CLOSE

LIMIT SWITCH

NC C

OPEN

SAFETY EDGE

OPEN & CLOSE

LIMIT SWITCH

AUX. OPEN

LIMIT SWITCH

NC C

TO MOTOR

POWER IN

3 PHASE

INTERLOCK

CL OP

(IN MOTOR)

OPEN & CLOSE

OPEN

CLOSE 2

LIMIT SWITCH

(BK)

(BRN)

(BR)

(YEL)

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

(RED) (RED)

(OR)

(YEL)

(PUR)

(OR)

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

(PUR)

R3 (RED)

(BRN)

(YEL)

(OR)

(SEE NOTE #1)

(RED)

(WHEN PRESENT)

230V BRAKE

(GY)

RADIO TO

A1 A2

A2 A1

(YEL)

NUT

WIRE

YEL

BRN

PUR

GY 1

BL/BK

O/L

(WHEN PRESENT)

230V BRAKE

YEL

BRN

PUR

GY 1

BL/BK

O/L

230 VOLT - 3 PHASE

MOTOR CONNECTION 460 VOLT - 3 PHASE

MOTOR CONNECTION

NOTE:

1. Voltage same as line voltage.

(BK) (BK)

OVERLOAD

(RED)

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

- Shipped from Factory

1819

(OPTIONAL)

BIMETAL

CLOSE-A

RED AND YELLOW MOTOR WIRES.

* TO REVERSE MOTOR ROTATION INTERCHANGE

PULL SWITCH

OPEN & CLOSE

SAFETY

EDGE

OPEN

AUX.

OPEN

AUX.

L/S

OPEN-B

(OPTIONAL)

CLOSE L/S

3STOP

(HOT) L2

OPEN-A

CAPACITOR

N.O.

100W

MAX.

LIGHT RELAY

SEC.

OPEN L.S.

CLOSE L/S

N.O.

N.C. C

L1 (N)

MOTOR *

10VA.

PR1.

24VAC.

Y/BK

O/L

WIRE NUT

N.C. C

MOVE JUMPER WIRE TO TERMINAL #2

FOR MOMENTARY CONTACT ON CLOSE

WIRE NUT

CLOSE-B

RES.

SINGLE PHASE SCHEMATIC DIAGRAM for MGJ 1754 THREE PHASE SCHEMATIC DIAGRAM for MGJ

4356

(GY)

(PUR)

(YEL)

EXTERNAL

STOP

345 T1

24VAC

SEC.

PRI.

AUX. CLOSE

LIMIT SWITCH

NC C

OPEN

SAFETY EDGE

OPEN & CLOSE

LIMIT SWITCH

AUX. OPEN

LIMIT SWITCH

NC C

TO MOTOR

POWER IN

3 PHASE

INTERLOCK

CL OP

(IN MOTOR)

OPEN & CLOSE

OPEN

CLOSE 2

LIMIT SWITCH

(BK)

(BRN)

(BR)

(YEL)

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

(RED) (RED)

(OR)

(YEL)

(PUR)

(OR)

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

(PUR)

R3 (RED)

(BRN)

(YEL)

(OR)

(SEE NOTE #1)

(RED)

(WHEN PRESENT)

230V BRAKE

(GY)

RADIO TO

A1 A2

A2 A1

(YEL)

NUT

WIRE

YEL

BRN

PUR

GY 1

BL/BK

O/L

(WHEN PRESENT)

230V BRAKE

YEL

BRN

PUR

GY 1

BL/BK

O/L

230 VOLT - 3 PHASE

MOTOR CONNECTION 460 VOLT - 3 PHASE

MOTOR CONNECTION

NOTE:

1. Voltage same as line voltage.

(BK) (BK)

OVERLOAD

(RED)

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

- Shipped from Factory

1819

14 11

SINGLE PHASE SCHEMATIC DIAGRAM for LGJ 1666 CONTROL WIRING

Standard C2 or B2 Wiring

Model MGJ operators are shipped from the factory

with jumper set for C2 wiring, which requires constant

pressure on button to close the door. If momentary

contact in close direction is desired (B2 wiring) you

must include an entrapment protection device. See

close control jumper setting below.

Constant pressure on close (C2 wiring)

Red jumper wire was placed on terminal #2 in

the electrical enclosure. The operator will require

constant pressure on close control in order to keep

door 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 momentary

contact to close the door.

LOCATING THE CONTROL STATION

All 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 or

substituted when requested at the time of order. Mount the control station near the door.

WARNING

CAUTION

WARNING

INSTALL THE CONTROL STATION WHERE THE

DOOR IS VISIBLE, BUT AWAY FROM THE DOOR AND

ITS HARDWARE. IF CONTROL STATION CANNOT BE

INSTALLED WHERE DOOR IS VISIBLE, OR IF ANY

DEVICE OTHER THAN THE CONTROL STATION IS

USED TO ACTIVATE THE DOOR, A REVERSING

EDGE MUST BE INSTALLED ON THE BOTTOM OF

THE DOOR. FAILURE TO INSTALL A REVERSING

EDGE UNDER THESE CIRCUMSTANCES MAY

RESULT IN SERIOUS INJURY OR DEATH TO

PERSONS TRAPPED BENEATH THE DOOR.

WARNING

TO PREVENT ENTRAPMENT

DO NOT START DOOR DOWNWARD

UNLESS DOORWAY IS CLEAR

OPEN

STOP

Control Station

WARNING Notice

Push

Buttons

IMPORTANT: Mount WARNING NOTICE beside or

below the push button station.

MOUNT WARNING NOTICE

DETERMINE WIRING TYPE

Refer to the wiring diagram located on the inside cover the electrical box to determine the type of control wiring.

SPECIAL CONTROL WIRING

If your operator was shipped from the factory with

non-standard control wiring or with optional

accessories that require additional instructions, refer

to the wiring diagram(s) indicated in the special

control wiring data box. When a replacement wiring

diagram is present, wiring diagrams in this manual

will not apply. Refer only to the replacement wiring

diagram for all connections.

IMPORTANT NOTE: If your wiring diagram is

missing, or you are unsure of the wiring type for

your operator, contact the customer service

department @ 1-800-528-2806.

MODEL MGJ

Standard G2 Wiring

Model LGJ operators are supplied with type G2 control

wiring. Study the control features list below to

determine the features and type of control equipment

that may be used with your operator.

Entry Controls:

OPEN control requiring maintained contact.

OPEN control requiring only momentary contact.

CLOSE control requiring maintained contact.

CLOSE control requiring only momentary contact.

OPEN/CLOSE single control requiring momentary

contact..

STOP control requiring momentary contact.

Safety Devices:

External Interlock switch to disable all control

pneumatic safety (N.C.) to STOP while closing Safety

Device to REVERSE while closing Door Lock Sensing

Circuit.

Operational Features:

REVERSE (if closing) with momentary contact on

OPEN.

AUTOMATIC TIMER to CLOSE from any device.

AUTOMATIC TIMER to CLOSE from selected devices.

DELAY REVERSE in either direction for 1 second.

STOP after maximum run time is exceeded.

Note:

Refer to LGJ control connection diagrams on page 15.

MODEL LGJ

10 15

LISTED DOOR OPERATOR

41B6

LGJ CONTROL CONNECTION DIAGRAM

NUMBERED BOXES CORRESPOND WITH TERMINALS ON J1 CONNECTOR STRIP

If Neccessary, Remove The Connector Block From The Board To Secure Each Wire Connection

Connect field wires to any terminal number shown in the respective column. See control

options below for explanation of how field control will function for each terminal number.

OR OR

8435

OPEN

STOP

STANDARD

3 BUTTON CONTROL

10 5

SENSING

EDGE

ANY OPEN

CONTROL

(SEE NOTE)

ANY

OPEN & CLOSE

CONTROL

(SEE NOTE)

OR OR

8435

OPEN

STOP

OR OR

845

OPEN

STOP

OR OR

8435

OPEN

STOP

OR OR

1145

OPEN

OFF

2 BUTTON

CONTROL

(SEE NOTE)

3 BUTTON CONTROL

WITH

KEYED LOCK-OUT

3 BUTTON CONTROL

WITH

MULTIPLE CONTROL STATIONS

WHEN CONNECTING AN

OPEN CONTROL TO: - Open control will require constant

pressure to keep door moving.

- Open control will only require

momentary contact and will set or

reset timer to close.

- Open control will only require

momentary contact and will NOT

set or reset timer to close.

WHEN CONNECTING AN

CLOSE CONTROL TO: - Close control will require constant

pressure to keep door moving.

- Close control will only require

momentary contact.

DO NOT add unless using an

entrapment Protection device.

OPEN AND CLOSE CONTROL OPTIONS

IMPORTANT NOTE: WHEN STOP BUTTON IS NOT USED, ADD A JUMPER FROM

TERMINAL 3 TO TERMINAL 5. 3 5

MAXIMUM RUN TIME: 1 - ON: Maximum run time is 90 seconds.

OFF: Maximum run time is 45 seconds.

MAXIMUM RUN TIME: 2 - ON: CLOSE limit switch B

OFF: CLOSE limit switch A

MAXIMUM RUN TIME: 3 - OFF: (DO NOT ADJUST)

4 - OFF: (DO NOT ADJUST)

CONSULT FACTORY FOR ADJUSTEMENT

SWITCH #1 SETTINGS

SWITCH #2 SETTINGS

TIMER TO CLOSE SWITCH SETTING:

O = ON F = OFF

1 2 3 4

O O O O

F O O O

O F O O

F F O O

O O F O

F O F O

O F F O

F F F O

1 2 3 4

O O O F

F O O F

O F O F

F F O F

O O F F

F O F F

O F F F

F F F F

= Disabled

= 2 sec

= 3 sec

= 13 sec

= 15 sec

= 23 sec

= 32.5 sec

= 43.6 sec

= 72 sec

= 88 sec

= 107 sec

= 126sec

= 148 sec

= 172 sec

= 198 sec

= 224 sec

SETTING SETTINGTIME TIME

SWITCH ADJUSTMENTS



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 PARTS

OUR LARGE SERVICE ORGANIZATION

SPANS AMERICA

INSTALLATION AND SERVICE INFORMATION

ARE AVAILABLE 6 DAYS A WEEK

CALL 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 PARTS

PLEASE 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 EVERY

ITEM PROCEDURE 3 MONTHS 6 MONTHS 12 MONTHS

Drive 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

16 9

REPLACEMENT PART KITS LGJ

Item P/N Description QTY

Below are replacement kits available for your operator. Optional modifications and/or accessories included with

your operator may add or remove certain components from these lists. Please consult a parts and service

representative regarding availability of individual components of kits specified below. Refer to page 10 for all

repair part ordering information.

K72-12581 LIMIT SHAFT ASSEMBLY KIT

Item

L10

Description

Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Rotor for RSL Assembly

Washer, Shim

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Qty

K75-12582 LIMIT SWITCH ASSEMBLY KIT

Complete Electrical Box Replacement Kit

K-LGJ2511 Model LGJ2511

Electrical Box Sub-Assembly Kits

K72-12581 LGJ Limit Shaft Assembly

K75-12582 LGJ Limit Switch Assembly

K79-11384 LGJ PC Board Assembly

P/N

11-11425

12-10458

13-10024

15-48B07AXX

81-11443

80-10053

80-10025

80-10026

86-RP04-012

87-E-038

Item

Description

Depress Plate

Spring, Depress Plate

Limit Switch

Standoff, #4-40 Threaded x .19 Long

Screw, #4-40 x 1” Pan Head Ph

Screw, #6-32 x 1” Pan Head Ph

Locknut #6-32

Qty

P/N

10-11391

18-10036

23-10041

23-11442

80-11445

82-PX04-16

82-PX06-16

84-LH-06

10-11390M1

10-11392M1

21-13395

29-7642

42-9306

42-13378

75-11395

79-11378

80-10027

11-11425

12-10458

13-10024

15-48B07AXX

81-11443

85-FW-38

86-RP04-012

87-E-038

10-11391

18-10036

23-10041

23-11442

80-11446

82-PX04-16

82-PX06-16

84-LH-06

Electrical Box Cover

Electrical Box

Transformer, LGJ 115V-24VAC

Capacitor 220V 42MFD

Terminal Block 6 Pole

J2 Terminal Block, 16 Pole (1-16)

Hall Effect Assembly

PCB Board Assembly

PCB Board Standoff

Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Rotor for RSL Assembly

Flat Washer, 3/8”

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Depress Plate

Spring, Depress Plate

Limit Switch

Standoff, #4-40 Threaded x .19 Long

Screw, #4-40 x 1” Pan Head Ph

Screw, #6-32 x 1” Pan Head Ph

Locknut #6-32

LGJ LIMIT SWITCH ADJUSTMENT

IMPORTANT NOTE: To avoid danger of possible damage to the door and operator, limit switches must be

adjusted to their approximate positions before applying power to the operator.

NEVER PLACE HANDS OR TOOLS INSIDE

OPERATOR OR NEAR MECHANISM UNLESS

POWER IS OFF!!

WARNING

CAUTION

WARNING

A. Set Limit Direction Switch

Open the cover on the electrical enclosure and locate

dip switch SW1 on circuit board. The direction of the

limit travel is determined by the switch SW1 - pole #2

setting.

If your operator is mounted Motor Side Up:

Set dip switch SW1 - pole #2 to “ON” position.

If your operator is mounted Motor Side Down:

Set dip switch SW1 - pole #2 to “OFF” position.

NOTE: See Mounting Options on page 5 to verify the

correct mounting application.

As determined by SW1 - pole 2 setting above, locate

your OPEN and CLOSE limit switches. See the figure

below for switch layout.

For Motor Side Up Mounting: Limit switch -A- is the

OPEN limit. Limit switch -B- is the CLOSE limit.

For Motor Side Down Mounting: Limit switch -A- is

the CLOSE limit. Limit switch -B- is the OPEN limit.

Auxiliary limit switches to control other functions are

also present and should not be confused with the -A-

and -B- limit switches. There are two(2) limit nuts on

the threaded shaft that transverse the shaft as the

operator opens and closes the door. When a limit nut

nears the end of the shaft, it activates a switch(es).

B. Manually raise the door to a nearly open position.

(see page 17, Manual Operation)

C. Depress the limit nut retaining bracket away from

the slots in the limit nuts, and manually rotate to the

OPEN limit nut until it depresses the OPEN limit

switch lever (you can hear the switch click when the

switch contacts transfer). Release the retaining

bracket and be sure it engages in the slots of both

limit nuts.

D. Manually lower the door to a nearly closed

position, and repeat step C with the CLOSE (right)

limit nut.

E. Test Limit Travel

Manually move the door to a half-open position to

avoid damage due to incorrect (dip switch setting)

limit travel. When power is applied, it will cause the

door to OPEN when the limit nuts are traveling in the

direction of the CLOSE limit switch or vice versa. In

either instance, the limit nuts will travel past the limit

switch and may cause damage to both the door and

operator. See Step A for correct setting.

F. After completing the wiring connections on pages

11 thru 13, refer back to step C above for adjustment

of limit switches to their final, exact position.

Limit Switch -A-

(Top Switch)

Dip Switch

SW1

Limit Switch -B-

(Top Switch)

Limit Nut

Limit Switch -A-

(Bottom Switch)

Limit Switch -B-

(Bottom Switch)

If you operator is mounted Motor

Side Up: Set dip switch SW1 - pole

#2 to “ON” position

If your operator is mounted

Motor Side Down: Set dip switch

SW1 - pole #2 to “OFF” position.

When SW1 - pole 2 position is

“ON”: Limit switch -A- is the OPEN

limit. Limit switch -B- is the close

limit.

When SW1 - pole 2 position is

“OFF”: Limit switch -A- is the

CLOSE limit. Limit Switch -B- is the

OPEN limit.

Limit Switch Layout

COMPLETE ELECTRICAL BOX KITS

Motor Kit

K20-1025C1 Model LGJ2511

Disconnect Assembly Kit

K75-12583 Model LGJ2511

TO AVOID SERIOUS PERSONAL INJURY OR DEATH

FROM ELECTROCUTION, DISCONNECT ELECTRIC

POWER BEFORE MANUALLY MOVING LIMIT NUTS.

WARNING

CAUTION

WARNING

MGJ LIMIT SWITCH ADJUSTMENT

MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE

PROCEEDING WITH ADJUSTMENTS.

SENSING EDGES

All types of sensing edges with an isolated normally

open (N.O.) output are compatible with your operator.

This includes pneumatic and electric edges. If your

door does not have a bottom sensing edge and you

wish to purchase one, contact the supplier of your

operator.

If not pre-installed by the door manufacturer, mount the

sensing edge on the door according to the instructions

provided with the edge. The sensing edge may be

electrically connected by either coiled cord or take-up

reel. Refer to the steps below

Important Notes:

a) Proceed with Limit Switch Adjustments before

making any sensing edge wiring connections to

operator as described below.

b) Electrician must hardwire the junction box to the

operator electrical box in accordance with local

codes.

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)

IT IS STRONGLY RECOMMENDED THAT A

SENSING EDGE OR OTHER ENTRAPMENT

PROTECTION DEVICE BE USED IN

CONJUNCTION WITH THIS OPERATOR.

TAKE-UP REEL: Take-up reel should be installed 12"

above the top of the door.

COIL CORD: Connect operator end of coil cord to

junction box (not supplied) fastened to the wall

approximately halfway up the door opening.

If other problems persist, call our toll-free number for

assistance - 1-800-528-2806.

Retaining Plate

CLOSE Limit Switch

SAFETY

(Aux. Close) Limit Switch

OPEN Limit Switch

1. To adjust limit nuts depress retaining plate to allow

nut to spin freely. After adjustment, release plate

and ensure it seats fully in slots of both nuts.

2. To increase door travel, spin nut away from

actuator. To decrease door travel, spin limit nut

toward actuator.

3. Adjust open limit nut so that door will stop in open

position with the bottom of the door even with top

of door opening.

4. Repeat Steps 1 and 2 for close cycle. Adjust close

limit nut so that actuator is engaged as door fully

seats at the floor.

Actuator

Aux. OPEN Limit Switch

LGJ ELECTRICAL BOX - ILLUSTRATED PARTS

L5 L9

7L10

L10

REPLACEMENT PART LISTS – MODEL LGJ

Refer to the parts lists below for replacement kits available for your operator. If optional modifications and/or

accessories are included with your operator, certain components may be added or removed from these lists.

Individual components of each kit may not be available. Please consult a parts and service representative

regarding availability of individual components. Refer to page 10 for all repair part ordering information.

K75-12583 DISCONNECT ASSEMBLY KIT

ITEM PART # DESCRIPTION QTY

D10

D11

D12

D13

Bevel Gear Yoke

Disconnect

Release Lever

Retaining Plate

Disconnect Shaft

Sprocket, 48B14/41B14

Compression Spring

Key, 1/4 x 1-1/2” Long

Screw, #10-32 x 1/2” Hex

Flatwasher, 3/4”

Cotter Pin 1/8” x 1-3/4” Long

Roll Pin, 1/8” Dia. x 1” Long

E Ring 3/4”

10-11023

10-11393

10-11394

10-11399

11-11424

15-11379

18-11427

80-207-19

82-HX10-08T

85-FW-75

86-CP04-112

86-RP04-100

87-E-075

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION QTY

Support Bracket

Mounting Bracket (LH)

Mounting Bracket (RH)

Gear Reducer, 40:1

Electrical Box

Motor

Nut

Stud

10-11397

10-11389-1

10-11398-2

32-11435

See Page 16

84-FN-10

84-FN-19144

EMERGENCY MANUAL OPERATION

This operator a floor level disconnect chain to

disconnect the door from the door operator allowing

for manual operation of the door in case of

emergency or power failure.

1. To disengage, pull the chain and secure in the

disengaged position by slipping the end through the

keyhole bracket mounted on the wall. Or if

emergency egress device is used, pull handle to

disengage operator from door.

2. The door may now be pushed up or pulled down

manually. Release the disconnect chain to operate the

door again electrically.

Keyhole Bracket

6. Mount Chain Keeper / Keyhole Bracket

Using suitable hardware mount the chain keeper

approximately 4 feet above the floor, near the free

hanging chain. Remove disconnect sash chain

from bag and place the end through the keyhole

in the the chain keeper. Remove excess links if

necessary.

TURN OFF POWER TO THE OPERATOR BEFORE

MANUALLY OPERATING YOUR DOOR.

WARNING

CAUTION

WARNING

Pull sash chain and secure

in bracket for manual

operation of the door.

619

LGJ ILLUSTRATED PARTS

D11

D12

D10

D13

1a. Wall Mounting

The operator should generally be installed below

the door shaft, and as close to the door as

possible. The optimum distance between the door

shaft and operator drive shaft is between 12” - 15”.

Refer to Figure 3.

OPERATOR MOUNTING

IMPORTANT: The shelf or bracket must

provide adequate support, prevent play

between operator and door shaft, and permit

operator to be fastened securely and with the

drive shaft parallel to the door shaft.

1b. Bracket or Shelf Mounting

The operator may be mounted either above or

below the door shaft. The optimum distance

between the door shaft and operator drive shaft is

between 12” - 15”. Refer to Figure 4.

1c. Place door sprocket on the door shaft. Do not

insert the key at this time.

2. Wrap drive chain around door sprocket and join

roller chain ends together with master link.

3. Raise operator to approximate mounting position

and position chain over operator sprocket.

4. Raise or lower operator until the chain is slightly

taut (not tight). Make sure the operator output

shaft is parallel to door shaft and sprockets are

aligned. When in position, secure the operator to

wall or mounting bracket.

5. Align sprockets and secure, (see Figure 5).

FIGURE 4FIGURE 3

Before your operator is installed, be sure the door has been properly aligned and is working smoothly. The

operator may be wall mounted or mounted on a bracket or shelf. If necessary, refer to the operator preparations

on page 3. Refer to the illustration and instructions below that suits your application.

Typical Right Hand

Wall Mounted Operator

OPTIONAL (LGJ)

Mounting Bracket

Be sure door

sprocket is properly

aligned with drive

before securing to

the shaft.

Chain Keeper

FIGURE 5

OPTIONAL (MGJ)

Mounting Bracket

P/N 10-9098

Below are replacement kits available for your operator. For replacement of electrical box, motor or brake

components be sure to match model number of your unit to kit number below to ensure proper voltage

requirements. Optional modifications and/or accessories included with your operator may add or remove certain

components from these lists. Please consult a parts and service representative regarding availability of individual

components of kits specified below. Refer to page 10 for all repair part ordering information.

20 5

REPLACEMENT PART KITS MGJ

NOTES:

1) Reversing Contactor (03-11112), Used only on three

phase operators. Single phase operators use relays.

2) Capacitor (29-10338), Capacitor Clamp (10-11421)

and Resistor (29-2) used only on single phase

operators.

Complete Electrical Box Replacement Kits

K-MGJ5011L Model MGJ5011L

K-MGJ5023L Model MGJ5023L

K-MGJ5025L Model MGJ5025L

K-MGJ5038L Model MGJ5038L

K-MGJ5043L Model MGJ5043L

K-MGJ5011R Model MGJ5011R

K-MGJ5023R Model MGJ5023R

K-MGJ5025R Model MGJ5025R

K-MGJ5038R Model MGJ5038R

K-MGJ5043R Model MGJ5043R

Electrical Box Sub-Assemblies

K72-12565 MGJ Limit Shaft Assembly

K75-12566 MGJ Limit Switch Assembly

COMPLETE ELECTRICAL BOX KITS

P/N

03-11112

10-11403

10-11420

10-11421

(See Var. Comp.)

24-24-1

29-10338

29-2

42-10040

42-110

11-11373

12-10458

13-10024

15-48B07AXX

80-10026

85-FW-38

86-RP04-012

87-E-038

10-11419

18-10036

23-10041

31-13062

82-PX06-16

82-PX06-19

84-DT-06

84-LH-06

Item

Qty

Description

Reversing Contactor (See Notes)

Electrical Box Cover

Electrical Box

Capacitor Clamp (See Notes)

Transformer

24V DPDT Relay

Capacitor, 7MFD (See Notes)

Resistor, 20 Ohm

Terminal Block Assy, 3 Lug

10 Position Terminal Block

MGJ Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Washer, Shim 3/8” I.D. x .01

Flatwasher, 3/8”

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Depress Plate

Spring, Depress Plate

SPDT Limit Switch

Spacer, .115” ID x 5/8” Long

Screw, #6-32 x 1” Pan HD PH

Screw, #6-32 x 1-3/8” Pan HD PH

Nut, #6-32 Double Tinnerman

Locknut #6-32

K72-12565 LIMIT SHAFT ASSEMBLY KIT

Item

Description

MGJ Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Washer, Shim 3/8” I.D. x .01

Flatwasher, 3/8”

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

Qty

K75-12566 LIMIT SWITCH ASSEMBLY KIT

P/N

11-11373

12-10458

13-10024

15-48B07AXX

80-10026

85-FW-38

86-RP04-012

87-E-038

Item

Description

Depress Plate

Spring, Depress Plate

SPDT Limit Switch

Spacer, .115” ID x 5/8” Long

Screw, #6-32 x 1” Pan HD PH

Screw, #4-40 x 1-1/2” Pan HD PH

Nut, #6-32 Double Tinnerman

Locknut #6-32

Qty

P/N

10-11419

18-10036

23-10041

31-13062

82-PX06-16

82-PX04-20

84-DT-06

84-LH-06

VARIABLE COMPONENT KITS

P/N

21-5115

21-5230

21-5460

Description

Transformer, 115V

Transformer, 230V

Transformer, 460V

MGJ5011

MGJ5023

MGJ5043

MGJ5025

MGJ5038

Item

FIGURE 3

LABEL

SILK

SCREEN

HOUR GLASS

CABLE SLEEVE

RELEASE

CABLE

SUPPORT

BRACKET

SLOT

SASH CHAIN

KEY RING

FIGURE 2

Disconnect Cable Re-routed for Left Hand Mounting

Motor Kits

K20-1050C1M Model MGJ5011

K20-3050C4M Models MGJ5023,MGJ5038,MGJ5043

K20-5150C6M Model MGJ5025

Disconnect Assembly Kit

K75-12567 Model MGJ Operators

421

MGJ ELECTRICAL BOX - ILLUSTRATED PARTS

S6 S3 S5

LGJ LEFT HAND MOUNTING PREPARATIONS

1. Reconfigure Disconnect Chain Assembly

The default configuration for the disconnect chain assembly

is shown in Figure 1. This configuration allows the chain to

hang freely when the operator is mounted on right side only.

To insure smooth operation of the disconnect chain

assembly when mounted motor side down, reconfigure as

described below and as shown in figures 2 and 3.

1. Disconnect the key ring from the release cable.

2. Thread the release cable through the slot on the

outermost edge of the support bracket, as shown in Figure

3. Re-attach the key ring and sash chain to the end of the

loop of release cable.

HOUR GLASS

CABLE SLEEVE

RELEASE

CABLE

SLOT

SUPPORT

BRACKET

KEY RING

SASH CHAIN

FIGURE 1

LGJ Operators are assembled at the factory to be installed in a right hand (motor side up) configuration. To install an

LGJ Operator on the left hand side of your door (motor side down), complete the three steps described below.

2. Set Limit Switch Direction

Locate Switch #1 on PCB in the electrical box. Place

pole #2 of Switch #1 in the “OFF” position. With this

setting limit switch labeled “A” is the close switch, limit

switch labeled “B” is the open switch.

IMPORTANT: Refer to page 9 for for complete

instructions on setting of limit switches.

3. Affix Electrical Box Cover Caution Label

Place the caution label on electrical box cover such that

the text is read in the opposite direction of silkscreen.

Disconnect Cable as shipped from the factory

Remove the three cotter pins from the disconnect shaft.

Do not discard the pins. Slide the disconnect shaft out

of the support bracket. The release lever will now be

free inside the motor frame. Remove the release lever

and sash chain from the motor frame. Slide the

disconnect hub, compression spring, and flatwasher

from the end of the gear reducer shaft. Remove the

disconnect support bracket by first removing the the two

gear reducer housing screws. Replace the screws in the

gear reducer and firmly tighten.

2. Re-assemble Disconnect Assembly

Remove the two screws on the opposite side of the gear

reducer and mount the disconnect support bracket with

the notched side facing the motor. For the remainder of

the installation, follow the steps outlined above in

reverse order, referring to the illustration as necessary.

22 3

2-1/4"

FIGURE 1

Shaft Support Bracket

with Bearing (Not Supplied)

Door Sprocket

TO AVOID DAMAGE TO DOOR AND OPERATOR,

MAKE ALL DOOR LOCKS INOPERATIVE. SECURE

LOCK(S) IN "OPEN" POSITION.

IF THE DOOR LOCK NEEDS TO REMAIN

FUNCTIONAL, INSTALL AN INTERLOCK SWITCH.

DO NOT CONNECT ELECTRIC POWER UNTIL

INSTRUCTED TO DO SO.

KEEP DOOR BALANCED. STICKING OR BINDING

DOORS MUST BE REPAIRED. DOORS, DOOR

SPRINGS, CABLES, PULLEYS, BRACKETS AND

THEIR HARDWARE MAY BE UNDER EXTREME

TENSION AND CAN CAUSE SERIOUS PERSONAL

INJURY. CALL A PROFESSIONAL DOOR

SERVICEMAN TO MOVE OR ADJUST DOOR

SPRINGS OR HARDWARE.

WARNING

CAUTION

WARNING

CAUTION

WARNING

SITE PREPARATIONS

It is imperative that the wall or mounting surface provide

adequate support for the operator.

This surface must:

a) Be rigid to prevent play between operator and

door shaft.

b) Provide a level base.

c) Permit the operator to be fastened securely and

with the drive shaft parallel to the door shaft.

The safety and wear of the operator will be adversely affected

if any of the above requirements are not met.

For metal buildings, fasten 2” x 2” x 3/16” (or larger) angle

iron frames to the building purlins. For proper spacing, retain

.2.75” between for model MGJ, butt purlins together for model

LGJ. See Figure 1.

OPERATOR PREPARATION

IMPORTANT SAFETY NOTES

2.75 for MGJ, butt together for LGJ

Model LGJ: Shipped from the factory for right hand mounting, refer to preparation instructions on page 4 for

Left hand mounting.

Model MGJ: Shipped from the factory for either left hand or right hand mounting. Refer to the last digit in the

model number for handing of your unit. If necessary, model MGJ may also be field modified to

accommodate opposite handing. Refer to the conversion instructions below and on page 4.

REPLACEMENT PART LISTS – MODEL MGJ

Refer to the parts lists below for replacement kits available for your operator. If optional modifications and/or

accessories are included with your operator, certain components may be added or removed from these lists.

Individual components of each kit may not be available. Please consult a parts and service representative

regarding availability of individual components. Refer to page 10 for all repair part ordering information.

K75-12567 DISCONNECT ASSEMBLY KIT

ITEM PART # DESCRIPTION QTY

D10

D11

D12

D13

D14

D15

Disconnect Hub

Bevel Gear Yoke

Disconnect Support Bracket

Release Lever

Disconnect Shaft MGJ

Sprocket, 41B19 x 1.25 Bore

Compression Spring

12ft. Of Sash Chain

Disconnect Key 1/4 x 1/4 x 7/8

Washer, 1” I.D. x 1/16” Thick

Screw, #10-32 Hex Head Socket

#10 Lock Washer ZP

Cotter Pin, 1/8” x 1-3/4” Long

Roll Pin, 1/8” Dia. x 1” Long

E Ring, 1” Plated

07-11418

10-11023

10-11358

10-11394

11-11361

15-11377

18-10467

19-8A-12

80-11416

80-206-11

82-SH10-12

85-LS-10

86-CP04-112

86-RP04-100

87-E-100

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION QTY

Brake Mounting Plate

Front Bracket

Gear Reducer, 45:1

Electrical Box

Motor

10-11357

10-11359

32-11414

See Page 20

KEYS

SPRING

DISC

HUB

E RING

SPROCKET

YOKE

BRACKET

SHAFT

DISC

LEVER

MGJ OPPOSITE HANDING PREPARATIONS

1. Remove Disconnect Assembly Components

Remove the master link from the limit chain, remove

the chain and set it aside.

Remove the two E Rings securing the sprocket on the

gear reducer shaft. Remove the screws securing the

yoke to the disconnect shaft, set the yoke aside.

MOTOR

TYPE: .................................Intermittent Duty

HORSEPOWER: ................MGJ: 1/2Hp 1 or 3 Phase

LGJ: 1/4 Hp 1 Phase

SPEED:...............................MGJ: 1050 RPM

LGJ: 1725 RPM

VOLTAGE: ..........................MGJ: 115, 60HZ, 1Ph

230V, 50 or 60Hz, 3Ph

230V, 60Hz, 1Ph

380V, 50Hz, 3Ph

460V, 60Hz, 3Ph

LGJ: 115V, 60Hz, 1Ph

CURRENT: See motor nameplate

MECHANICAL

DRIVE REDUCTION: .... . . . . . . . . . . . 40:1 Reduction

(Heavy duty wormgear-in-oil-bath speed reducer)

OUTPUT SPROCKET:...........Size #41

DOOR SPEED: . . . . . . . . . . MGJ: 1Ph, 23RPM

3Ph, 39RPM

LGJ: .1Ph, 43RPM

BEARINGS: .................Heavy duty wormgear-in-oil-bath

speed reducer.

SAFETY

DISCONNECT :.......................Floor level disconnect 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 RECOMMENDED

FOR ALL COMMERCIAL OPERATOR INSTALLATIONS.

REQUIRED WHEN THE 3 BUTTON CONTROL STATION

IS OUT OF SIGHT OF DOOR OR ANY OTHER

CONTROL (AUTOMATIC OR MANUAL) IS USED.

SPECIFICATIONS

ELECTRICAL

RANSFORMER:.............24VAC

CONTROL STATION: ......NEMA 1 three button station.

OPEN/CLOSE/STOP

WIRING TYPE: MGJ: B2-C2 (Factory Shipped)

LGJ: G2 (Factory Shipped)

See pages 13 and 14 for optional control settings and

operating modes.

LIMIT ADJUST: ................Linear driven, fully adjustable

screw type cams. Adjustable to 24 feet.

7.50”

7.00”

11.00”

9.25”

LGJ WEIGHTS AND DIMENSIONS

HANGING WEIGHT:..........80-110 LBS.

10.50”

11.05”

MOUNTING DIMENSIONS

3.00”

5.50”

4.75”

8.90”

7.90”

1.97”

10.88”

4.50”

2.25”

.98”

1.96”

MOUNTING DIMENSIONS

MGJ WEIGHTS AND DIMENSIONS

HANGING WEIGHT:..........80-110 LBS.

ILLUSTRATED PARTS – MODEL MGJ

D13

D10

D15

D13

D12

D14

D11

OWNER'S MANUAL

MODELS:

LGJ & MGJ

INDUSTRIAL DUTY DOOR OPERATOR

NOT FOR RESIDENTIAL USE

LISTED DOOR OPERATOR

41B6

Serial #

(located on electrical box cover)

Installation Date

Wiring Type

2 YEAR WARRANTY

c2003, The Chamberlain Group, Inc.

MGJ CONTROL CONNECTION DIAGRAM

01-11452H

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

Open

Stop

Open

1 2 3 4

Stop

Open

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

STANDARD

1 2 4

Open

ALL CONTROL WIRING TYPES

2 OR MORE

1 2 4

Open

OPEN / CLOSE

RADIO CONTROL

1 BUTTON STATION or

ANY AUXILIARY DEVICE

RESIDENTIAL RADIO CONTROLS

SENSING DEVICE TO REVERSE OR STOP

EXTERNAL INTERLOCK

310

4545

Remove Jumper

When Interlock is Used

ONE 2 OR MORE

STANDARD

1 2 3 4

Stop

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 TYPES B2 or T1

WIRING TYPES ONLY

ALL CONTROL WIRING TYPES

T1 WIRING - RADIO TO OPEN ONLY

EXTERNAL

TERMINAL 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 Defeat

Switch

13 14

Power Supply for

Warning 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

(Refer to page 15 for model LGJ control connections)

Liftmaster Lgj Owners Manual OWNER'S S

Navigation menu

Versions of this User Manual:

Views

Navigation