LiftMaster LGJ User Manual

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

SPECIFICATIONS

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.

ELECTRICAL

T

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

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

WIRING TYPE: MGJ: B2-C2 (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.

OPEN/CLOSE/STOP

LGJ: G2 (Factory Shipped)

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.

MGJ WEIGHTS AND DIMENSIONS

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

7.50”

11.05”

7.00”

9.25”

LGJ WEIGHTS AND DIMENSIONS

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

7.90”

10.50”

11.00”

3.00”

MOUNTING DIMENSIONS

5.50”

4.75”

.98”

1.96”

4.50”

2.25”

8.90”

1.97”

MOUNTING DIMENSIONS

10.88”

2

3

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

WARNING

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.

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.

CAUTION

WARNING

Shaft Support Bracket
with Bearing (Not Supplied)

Door Sprocket

2-1/4"

FIGURE 1

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

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.
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.

LGJ LEFT HAND MOUNTING PREPARATIONS

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.

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

2.

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

FIGURE 1

HOUR GLASS
CABLE SLEEVE

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.

SLOT

RELEASE
CABLE

SUPPORT
BRACKET

KEY RING

SASH CHAIN

Disconnect Cable as shipped from the factory

4

5

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

OPERATOR MOUNTING

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.

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.

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.

OPTIONAL (LGJ)
Mounting Bracket

OPTIONAL (MGJ)
Mounting Bracket
P/N 10-9098

Typical Right Hand
Wall Mounted Operator

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).

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.

FIGURE 4FIGURE 3

Be sure door
sprocket is properly
aligned with drive
before securing to
the shaft.

Chain Keeper

6

FIGURE 5

7

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

WARNING

Pull sash chain and secure
in bracket for manual
operation of the door.

CAUTION

WARNING

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)

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.

MGJ LIMIT SWITCH ADJUSTMENT

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.

MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE
PROCEEDING WITH ADJUSTMENTS.

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.

CLOSE Limit Switch

TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER BEFORE MANUALLY MOVING LIMIT NUTS.

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

WARNING

OPEN Limit Switch

Actuator

SAFETY

(Aux. Close) Limit Switch

8

Retaining Plate

Aux. OPEN Limit Switch

9

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

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 -A­and -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

WARNING

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

OR

11

97
8435

OPEN

CLOSE

STOP

STANDARD

3 BUTTON CONTROL

10 5

SENSING

EDGE

85

9

11

ANY OPEN
CONTROL
(SEE NOTE)

65

ANY
OPEN & CLOSE
CONTROL
(SEE NOTE)

OR

OR

OR

11

97
8435

OPEN

CLOSE

STOP

OR

OR

OR

11

97
845

OPEN

CLOSE

STOP

OR

OR

OR

11

97
8435

OPEN

CLOSE

STOP

OR

OR
1145

OPEN

OFF
ON

CLOSE

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.

11

9

8

4

7

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

OR

OR

MAINTENANCE SCHEDULE

Check at the intervals listed in the following chart.

EVERY EVERY EVERY

ITEM PROCEDURE 3 MONTHS 6 MONTHS 12 MONTHS

Drive Chain Check for excessive slack.

Sprockets Check set screw tightness

Fasteners Check & tighten as required

Manual Disconnect Check & Operate

Bearings & Shafts Check for wear & lubricate



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 & adjust as required.
Lubricate.*



 

 

 

 

HOW TO ORDER REPAIR PARTS

OUR LARGE SERVICE ORGANIZATION

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

SPANS AMERICA

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

10

11

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

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.

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

WARNING

Control Station

OPEN

Push

Buttons

CLOSE

STOP

WARNING

TO PREVENT ENTRAPMENT

DO NOT START DOOR DOWNWARD

UNLESS DOORWAY IS CLEAR

WARNING Notice

(OPTIONAL)

SINGLE PHASE SCHEMATIC DIAGRAM for MGJ

1754

BK

(HOT) L2

BK

3

(OPTIONAL)

LIGHT

W

MAX.

100W

WIRE NUT

CLOSE-B

C

N.O.

W

BK

OPEN-A

CAPACITOR

R

STOP

MOVE JUMPER WIRE TO TERMINAL #2
FOR MOMENTARY CONTACT ON CLOSE

4

C

BL

BIMETAL

RELAY

RES.

Y

Y

B

A

Y

W

MOTOR *

Y

BK

O/L

R

PR1.

10VA.

24VAC.

SEC.

R

L1 (N)

BR

W

Y/BK

WIRE NUT

R3

BR

OPEN

SAFETY

EDGE

10

GY

PULL SWITCH

TO

OPEN & CLOSE

7

CLOSE

BR

R1

AUX.

CLOSE L/S

GY

Y

R2

Y

OR

GY

BL

OPEN-B

1

OR

AUX.

OPEN

L/S

P

2

12

OR

P

CLOSE-A

BL

C

OP

CL

N.O.

R

OPEN L.S.

OR

N.C.

CLOSE L/S

P

N.C.

11

W

C

W

W

C

* TO REVERSE MOTOR ROTATION INTERCHANGE

RED AND YELLOW MOTOR WIRES.

12

13

THREE PHASE SCHEMATIC DIAGRAM for MGJ

1819

(YEL)

3 PHASE

POWER IN

3

STOP

OPEN

BRN

GY

PUR
YEL

BRN

1
2
3

7
85
9

230 VOLT - 3 PHASE

MOTOR CONNECTION

L3

L2

L1

(BK)

(BK)

(BK)

EXTERNAL

INTERLOCK

45

4

6

(BR)

BL/BK

O/L

BL/BK

*

230V BRAKE

(WHEN PRESENT)

(BRN)

(YEL)

14

(OR)

13

1

BRN

GY

PUR
YEL

BRN

1
2
3

460 VOLT - 3 PHASE

MOTOR CONNECTION

CL

OP

OP

CL

3

3

1

5

OVERLOAD
(IN MOTOR)

(OR)

A1

4

4

2

6

OP

7

4
85
9

6

OP

BL/BK

O/L

BL/BK

(OR)

A2

*

230V BRAKE

(WHEN PRESENT)

OP

CL

6

2

5

1

(BK)

PRI.

(BRN)

24VAC

SEC.

OPEN

LIMIT SWITCH

C

NC

(GY)

(PUR)

(YEL)

(BK)

(SEE NOTE #1)

T1

(YEL)

(OR)

WIRE

TO MOTOR

NUT

SAFETY EDGE

R1

(OR)

(OR)

OPEN & CLOSE

RADIO TO

(OR)

OPEN & CLOSE

R1

R2

CLOSE

(RED)

NOTE:

1. Voltage same as line voltage.

10

7

(YEL)

AUX. CLOSE

LIMIT SWITCH

(GY)

NC

(YEL)

(GY)

C

(OR)

NC

(RED)

R1

AUX. OPEN

LIMIT SWITCH

C

NO

(PUR)

2

(PUR)

14

13

(RED)

CLOSE CONTROL WIRING OPTIONS

C2 WIRING - Constant Presssure to Close

*

RED WIRE ON TERMINAL #2 (Shipped from Factory)

R1

(PUR) (PUR) (PUR)

CL

A2 A1

CL

- Shipped from Factory

*

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

(RED)

CLOSE

LIMIT SWITCH

NC

R3

(RED)

(PUR)

C

SINGLE PHASE SCHEMATIC DIAGRAM for LGJ

WARNING

1666

14

15

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

OR

11

97
8435

OPEN

CLOSE

STOP

STANDARD

3 BUTTON CONTROL

10 5

SENSING

EDGE

85

9

11

ANY OPEN
CONTROL
(SEE NOTE)

65

ANY
OPEN & CLOSE
CONTROL
(SEE NOTE)

OR

OR

OR

11

97
8435

OPEN

CLOSE

STOP

OR

OR

OR

11

97
845

OPEN

CLOSE

STOP

OR

OR

OR

11

97
8435

OPEN

CLOSE

STOP

OR

OR
1145

OPEN

OFF
ON

CLOSE

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.

11

9

8

4

7

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

OR

OR

41B6

LISTED DOOR OPERATOR

REPLACEMENT PART KITS LGJ

WARNING

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.

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

K72-12581 LIMIT SHAFT ASSEMBLY KIT

Item

L1

11-11425

L2

12-10458

L3

13-10024

L4

15-48B07AXX

L5

81-11443

L6

80-10053

L7

80-10025

L8

80-10026

L9

86-RP04-012

L10

87-E-038

P/N

Description

Limit Shaft

3/8” Bearing, Plastic Flange

Limit Nut

Sprocket, 48B07

Rotor for RSL Assembly

Washer, Shim

Washer, Shim

Washer, Shim

Roll Pin, 1/8” Dia. x 3/4” Long

E Ring, 3/8”

K75-12582 LIMIT SWITCH ASSEMBLY KIT

Item

S1

S2

S3

S4

S5

S6

S7

S8

P/N

10-11391

18-10036

23-10041

23-11442

80-11445

82-PX04-16

82-PX06-16

84-LH-06

Description

Depress Plate

Spring, Depress Plate

Limit Switch

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

1

2

2

1

1

1

1

1

1

3

Qty

1

2

2

2

4

4

2

2

Motor Kit

K20-1025C1 Model LGJ2511

Disconnect Assembly Kit

K75-12583 Model LGJ2511

COMPLETE ELECTRICAL BOX KITS

Item P/N Description QTY

1

10-11390M1

2

10-11392M1

3

21-13395

4

29-7642

5

42-9306

6

42-13378

7

75-11395

8

79-11378

9

80-10027

L1

11-11425

L2

12-10458

L3

13-10024

L4

15-48B07AXX

L5

81-11443

L6

85-FW-38

L7

86-RP04-012

L8

87-E-038

S1

10-11391

S2

18-10036

S3

23-10041

S4

23-11442

S5

80-11446

S6

82-PX04-16

S7

82-PX06-16

S8

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
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

1
1
1
1
1
1
1
1
4
1
2
2
1
1
4
1
1
1
2
2
2
4
4
2
2

16

WARNING

17

LGJ ELECTRICAL BOX - ILLUSTRATED PARTS

1

L3

L1

L5

L9

L3

7

L10

L7

L2

4

3

S2

S8

S3

S5

S4

S6

S1

2

5

9

8

S7

L2

L6

L4

6

L10

L10

L8

REPLACEMENT PART LISTS – MODEL LGJ

WARNING

CAUTION

WARNING

WARNING

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

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

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

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”

1

1

1

1

1

1

1

1

5

1

1

1

1

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION QTY

1

10-11397

2

10-11389-1

3

10-11398-2

4

32-11435

5

See Page 16

6

See Page 16

7

84-FN-10

8

84-FN-19144

Support Bracket

Mounting Bracket (LH)

Mounting Bracket (RH)

Gear Reducer, 40:1

Electrical Box

Motor

Nut

Stud

1

1

1

1

1

1

1

1

18

19

LGJ ILLUSTRATED PARTS

D3

5

2

1

D5

D11

D12

D1

4

6

D10

D7

D2

D9

3

D8

D6

D13

D4

D9

7

8

REPLACEMENT PART KITS MGJ

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.

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

Item

1

03- 11112

2

10-11403

3

10-11420

4

10-11421

5

(See Var. Comp.)

6

24-24-1

7

29-10338

8

29-2

9

42-10040

10

42-110

L1

11-11373

L2

12-10458

L3

13-10024

L4

15-48B07AXX

L5

80-10026

L6

85-FW-38

L7

86-RP04-012

L8

87-E-038

S1

10-11419

S2

18-10036

S3

23-10041

S4

31-13062

S5

82-PX06-16

S6

82-PX06-19

S7

84-DT-06

S8

84-LH-06

P/N

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

Qty

1
1
1
1
1
2
1
1
1
1
1
2
2
1
1
2
1
1
1
2
4
8
2
8
4
2

Motor Kits

K20-1050C1M Model MGJ5011
K20-3050C4M Models MGJ5023,MGJ5038,MGJ5043
K20-5150C6M Model MGJ5025

Disconnect Assembly Kit

K75-12567 Model MGJ Operators

K72-12565 LIMIT SHAFT ASSEMBLY KIT

Item

L1

11-11373

L2

12-10458

L3

13-10024

L4

15-48B07AXX

L5

80-10026

L6

85-FW-38

L7

86-RP04-012

L8

87-E-038

P/N

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”

K75-12566 LIMIT SWITCH ASSEMBLY KIT

Item

S1
S2
S3
S4
S5
S6
S7
S8

P/N

10-11419
18-10036
23-10041
31-13062
82-PX06-16
82-PX04-20
84-DT-06
84-LH-06

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

VARIABLE COMPONENT KITS

MGJ5011

Item

5

P/N

21-5115
21-5230
21-5460

Description

Transformer, 115V
Transformer, 230V
Transformer, 460V

MGJ5023

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.

Qty

1
2
2
1
1
2
1
1

Qty

1
2
4
8
2
8
4
2

MGJ5043

MGJ5025

MGJ5038

20

21

MGJ ELECTRICAL BOX - ILLUSTRATED PARTS

L8

L6

L2

1

L3

L1

L7

L2

4

7

3

9

S3

S9

S7

S4

S6

S3

S5

6

6

8

5

S2

S8

S1

2

S3

S7

S6

S4

S3

10

L3

L4

L5

WARNING

CAUTION

WARNING

WARNING

WARNING

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

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

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

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

1

1

1

1

1

1

1

1

2

1

2

2

4

1

2

INDIVIDUAL PARTS

ITEM PART # DESCRIPTION QTY

1

10-11357

2

10-11359

3

32-11414

4

See Page 20

5

See Page 20

Brake Mounting Plate

Front Bracket

Gear Reducer, 45:1

Electrical Box

Motor

1

1

1

1

1

22

23

ILLUSTRATED PARTS – MODEL MGJ

D8

D13

4

5

1

3

D10

D9

D7

D1

D15

D6

D15

D3

D4

D5

D13

D2

D12

D14

D11

2

LISTED DOOR OPERATOR

41B6

MGJ CONTROL CONNECTION DIAGRAM

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 MORE

1 2 4

Close

Open

Close

Open

OPEN / CLOSE

3

7

RADIO CONTROL

1 BUTTON STATION or

ANY AUXILIARY DEVICE

RESIDENTIAL RADIO CONTROLS

SENSING DEVICE TO REVERSE OR STOP

EXTERNAL INTERLOCK

3

10

4

5

4

5

Remove Jumper

When 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 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)

01-11452H

c

2003, The Chamberlain Group, Inc.

All rights Reserved