Liftmaster Lgj Owners Manual OWNER'S S

2014-07-19

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

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MGJ CONTROL CONNECTION DIAGRAM
(Refer to page 15 for model LGJ control connections)
IMPORTANT NOTES:
ATTENTION ELECTRICIAN:
1) The 3-Button Control Station provided must be connected for operation.
USE 16 GAUGE OR HEAVIER WIRE
2) If a STOP button is not used, a jumper must be placed between termianls 3 and 4.
FOR ALL CONTROL CIRCUIT WIRING.
3) Auxiliary control equipment may be any normally open two wire device such as
pullswitch, single button, loop detector, card key or such device.

OWNER'S MANUAL
MODELS:

LGJ & MGJ

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

2 OR MORE

Open
Close

Open

Stop

INDUSTRIAL DUTY DOOR OPERATOR

KEY LOCKOUT

Close
Stop
Keyswitch

ALL CONTROL WIRING TYPES

1 BUTTON STATION or
ANY AUXILIARY DEVICE

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

2 OR MORE

SEE NOTE #2

Open

SEE NOTES
#2 AND #3

OPEN / CLOSE
ALL CONTROL WIRING TYPES

B2 or T1
WIRING TYPES ONLY

ALL CONTROL WIRING TYPES

SENSING DEVICE TO REVERSE OR STOP

RESIDENTIAL RADIO CONTROLS

* OPEN TIMER TO CLOSE
3

* T1 WIRING - RADIO TO OPEN ONLY

TIMER TO CLOSE w/ WARNING LIGHT

EXTERNAL INTERLOCK

Warning Light will activate 15 sec. before door closes.

Remove Jumper
When Interlock is Used

Auxiliary Terminal Block

4
Timer Defeat
Switch

Power Supply for
Warning Light

ONE
c 2003, The Chamberlain Group, Inc.

NOT FOR RESIDENTIAL USE
41B6

2 OR MORE

ALL CONTROL WIRING TYPES

2 YEAR WARRANTY
Serial #
(located on electrical box cover)

T1 CONTROL WIRING ONLY
01-11452H

EXTERNAL
TERMINAL BLOCK

ALL CONTROL WIRING TYPES

RADIO CONTROL

Sensing Device

Installation Date
Wiring Type
LISTED DOOR OPERATOR

ILLUSTRATED PARTS – MODEL MGJ
SPECIFICATIONS
MOTOR

ELECTRICAL
TRANSFORMER:.............24VAC

HORSEPOWER: ................MGJ: 1/2Hp 1 or 3 Phase
LGJ: 1/4 Hp 1 Phase

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

D11

D2
D13

D14

CURRENT: See motor nameplate

D15

SPEED:...............................MGJ: 1050 RPM
WIRING TYPE:
MGJ: B2-C2 (Factory Shipped)
LGJ: 1725 RPM
LGJ: G2 (Factory Shipped)
VOLTAGE: ..........................MGJ: 115, 60HZ, 1Ph
230V, 50 or 60Hz, 3Ph
See pages 13 and 14 for optional control settings and
230V, 60Hz, 1Ph
operating modes.
380V, 50Hz, 3Ph
460V, 60Hz, 3Ph
LIMIT ADJUST: ................Linear driven, fully adjustable
LGJ: 115V, 60Hz, 1Ph
screw type cams. Adjustable to 24 feet.

D12

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

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

OUTPUT SPROCKET:...........Size #41
DOOR SPEED: . . . . . . . . . . MGJ: 1Ph, 23RPM

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

D13

LGJ: .1Ph, 43RPM

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.

3Ph, 39RPM

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

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

DISCONNECT :.......................Floor level disconnect for
emergency manual door operation.

D15

SAFETY

MECHANICAL

D10

MGJ WEIGHTS AND DIMENSIONS
2

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

7.50”

MOUNTING DIMENSIONS

10.50”
11.05”

5.50”

3.00”

7.00”

4.75”

11.00”

9.25”

LGJ WEIGHTS AND DIMENSIONS
HANGING WEIGHT:..........80-110 LBS.

4.50”
2.25”
7.90”

1.96”

.98”

1.97”
MOUNTING DIMENSIONS
8.90”

10.88”
2

IMPORTANT SAFETY NOTES

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.
INDIVIDUAL PARTS

K75-12567 DISCONNECT ASSEMBLY KIT
ITEM

D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15

PART #

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

DESCRIPTION

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

QTY

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

ITEM

PART #

1
2
3
4
5

10-11357
10-11359
32-11414
See Page 20
See Page 20

DESCRIPTION

QTY

Brake Mounting Plate
Front Bracket
Gear Reducer, 45:1
Electrical Box
Motor

1
1
1
1
1

CAUTION

WARNING
WARNING
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.

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.

CAUTION

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.

Shaft Support Bracket
with Bearing (Not Supplied)
Door Sprocket

The safety and wear of the operator will be adversely affected
if any of the above requirements are not met.
2-1/4"
2.75
for MGJ, butt together for LGJ

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.

FIGURE 1

OPERATOR PREPARATION
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.

MGJ OPPOSITE HANDING PREPARATIONS
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.

1. Remove Disconnect Assembly Components
Remove the master link from the limit chain, remove
the chain and set it aside.
KEYS
SPRING
DISC
HUB

SPROCKET
E RING
SHAFT
BRACKET
YOKE

DISC
LEVER

MGJ ELECTRICAL BOX - ILLUSTRATED PARTS

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.

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.

1
L8
L6
L2

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.
L3

9
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

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.

described below and as shown in figures 2 and 3.

IMPORTANT: Refer to page 9 for for complete
instructions on setting of limit switches.

L1
S3

L7
S7
S4

L2
L5

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. 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.

L3
S5
7

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

S8
S1

FIGURE 1

6
2

HOUR GLASS
CABLE SLEEVE

SLOT

8
RELEASE
CABLE

SUPPORT
BRACKET

5
KEY RING

10
SASH CHAIN

Disconnect Cable as shipped from the factory

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.

Motor Kits

Complete Electrical Box Replacement Kits
K-MGJ5011L
K-MGJ5023L
K-MGJ5025L
K-MGJ5038L
K-MGJ5043L

Model MGJ5011L
Model MGJ5023L
Model MGJ5025L
Model MGJ5038L
Model MGJ5043L

K-MGJ5011R
K-MGJ5023R
K-MGJ5025R
K-MGJ5038R
K-MGJ5043R

Model MGJ5011R
Model MGJ5023R
Model MGJ5025R
Model MGJ5038R
Model MGJ5043R

K20-1050C1M
K20-3050C4M
K20-5150C6M

RELEASE
CABLE
SLOT

Model MGJ5011
Models MGJ5023,MGJ5038,MGJ5043
Model MGJ5025

Disconnect Assembly Kit
K75-12567

HOUR GLASS
CABLE SLEEVE

Model MGJ Operators

KEY RING

K72-12565
Item
L1
L2
L3
L4
L5
L6
L7
L8

Electrical Box Sub-Assemblies
K72-12565
K75-12566

SUPPORT
BRACKET

MGJ Limit Shaft Assembly
MGJ Limit Switch Assembly

P/N
11-11373
12-10458
13-10024
15-48B07AXX
80-10026
85-FW-38
86-RP04-012
87-E-038

LIMIT SHAFT ASSEMBLY KIT
Qty
1
2
2
1
1
2
1
1

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”

FIGURE 2

SASH CHAIN

Disconnect Cable Re-routed for Left Hand Mounting

LABEL

COMPLETE ELECTRICAL BOX KITS
K75-12566

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

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

LIMIT SWITCH ASSEMBLY KIT
Qty
1
2
4
8
2
8
4
2

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

SILK
SCREEN

P/N

21-5115
21-5230
21-5460

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

MGJ5038

Item

MGJ5025

VARIABLE COMPONENT KITS
MGJ5043

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

MGJ5023

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

MGJ5011

Item
1
2
3
4
5
6
7
8
9
10
L1
L2
L3
L4
L5
L6
L7
L8
S1
S2
S3
S4
S5
S6
S7
S8

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.

FIGURE 3

OPERATOR MOUNTING

LGJ ILLUSTRATED PARTS

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.
5
OPTIONAL (LGJ)
Mounting Bracket

2
7

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

D11
D5

D12

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.

Typical Right Hand
Wall Mounted Operator

FIGURE 3

D9
4

FIGURE 4
3

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

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).

D2
D8

D10

D6
D13
D4

Chain Keeper

FIGURE 5

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

D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13

PART #

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

DESCRIPTION

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”

INDIVIDUAL PARTS

QTY

ITEM

PART #

1
1
1
1
1
1
1
1
5
1
1
1
1

1
2
3
4
5
6
7
8

10-11397
10-11389-1
10-11398-2
32-11435
See Page 16
See Page 16
84-FN-10
84-FN-19144

DESCRIPTION

Support Bracket
Mounting Bracket (LH)
Mounting Bracket (RH)
Gear Reducer, 40:1
Electrical Box
Motor
Nut
Stud

QTY

1
1
1
1
1
1
1
1

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.

WARNING

EMERGENCY MANUAL OPERATION

CAUTION

WARNING

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

TURN OFF POWER TO THE OPERATOR BEFORE
MANUALLY OPERATING YOUR DOOR.

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.

18
7

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
LGJ ELECTRICAL BOX - ILLUSTRATED PARTS

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.

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.

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

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

L3
1

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.

L1
L10
L9

L5
7

L10

L3
L8
L7

MGJ LIMIT SWITCH ADJUSTMENT

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.

WARNING

4
3

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

L2
L6
L10

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

CAUTION

WARNING
S8
2

OPEN Limit Switch
S1

CLOSE Limit Switch

Actuator
S4

6
8

Retaining Plate
SAFETY
(Aux. Close) Limit Switch

Aux. OPEN Limit Switch
8

REPLACEMENT PART KITS LGJ

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

Description

Qty

L1 11-11425

Limit Shaft

L2 12-10458

3/8” Bearing, Plastic Flange

L3 13-10024

Limit Nut

L4 15-48B07AXX Sprocket, 48B07

L5 81-11443

Rotor for RSL Assembly

L6 80-10053

Washer, Shim

L7 80-10025

Washer, Shim

L8 80-10026

Washer, Shim

L9 86-RP04-012

Roll Pin, 1/8” Dia. x 3/4” Long

L10 87-E-038

E Ring, 3/8”

Item

P/N

LIMIT SWITCH ASSEMBLY KIT
Description

Model LGJ2511

Qty

S1 10-11391

Depress Plate

S2 18-10036

Spring, Depress Plate

S3 23-10041

Limit Switch

S4 23-11442

Limit Switch

S5 80-11445

Standoff, #4-40 Threaded x .19 Long

S6 82-PX04-16

Screw, #4-40 x 1” Pan Head Ph

S7 82-PX06-16

Screw, #6-32 x 1” Pan Head Ph

S8 84-LH-06

Locknut #6-32

Item

P/N

1
2
3
4
5
6
7
8
9
L1
L2
L3
L4
L5
L6
L7
L8
S1
S2
S3
S4
S5
S6
S7
S8

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

Description
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

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.
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).

WARNING

WARNING
NEVER PLACE HANDS OR TOOLS INSIDE
OPERATOR OR NEAR MECHANISM UNLESS
POWER IS OFF!!

Model LGJ2511

COMPLETE ELECTRICAL BOX KITS

LIMIT SHAFT ASSEMBLY KIT

P/N

K75-12582

K20-1025C1
K75-12583

LGJ Limit Shaft Assembly
LGJ Limit Switch Assembly
LGJ PC Board Assembly

K72-12581
Item

Motor Kit

Disconnect Assembly Kit

Electrical Box Sub-Assembly Kits
K72-12581
K75-12582
K79-11384

LGJ LIMIT SWITCH ADJUSTMENT

SOLID STATE

QTY
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

B. Manually raise the door to a nearly open position.
(see page 17, Manual Operation)

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.

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.

CAUTION

WARNING

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.

D. Manually lower the door to a nearly closed
position, and repeat step C with the CLOSE (right)
limit nut.

NOTE: See Mounting Options on page 5 to verify the
correct mounting application.

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.

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.

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 Layout

If you operator is mounted Motor
Side Up: Set dip switch SW1 - pole
#2 to “ON” position

Limit Switch -B(Top Switch)
Limit Switch -B(Bottom Switch)

Limit Nut

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.

Limit Switch -A(Top Switch)

When SW1 - pole 2 position is
“OFF”: Limit switch -A- is the
CLOSE limit. Limit Switch -B- is the
OPEN limit.

Dip Switch
SW1

Limit Switch -A(Bottom Switch)
16

MAINTENANCE SCHEDULE

LGJ CONTROL CONNECTION DIAGRAM
41B6

Check at the intervals listed in the following chart.
LISTED DOOR OPERATOR

ITEM
Drive Chain

PROCEDURE
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

EVERY
3 MONTHS

EVERY
6 MONTHS

EVERY
12 MONTHS

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.
11
OR
9
OR
8

7
OR
4

11
OR
9
OR
8

OPEN

Check for wear & lubricate

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

SENSING
EDGE

STOP

ANY
OPEN & CLOSE
CONTROL
(SEE NOTE)

ANY OPEN
CONTROL
(SEE NOTE)

Repeat ALL procedures.
STANDARD
3 BUTTON CONTROL

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.

OR
4

OR
11

5
7
OR
4

OPEN
CLOSE

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

2 BUTTON
CONTROL
(SEE NOTE)

11
OR
9
OR
8

7
OR
4

11
OR
9
OR
8

7
OR
4

11
OR
9
OR
8

OPEN

STOP

OFF
ON

3 BUTTON CONTROL
WITH
MULTIPLE CONTROL STATIONS

3 BUTTON CONTROL
WITH
KEYED LOCK-OUT

IMPORTANT NOTE:

WHEN STOP BUTTON IS NOT USED, ADD A JUMPER FROM
TERMINAL 3 TO TERMINAL 5.

SWITCH ADJUSTMENTS
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

SWITCH #1 SETTINGS

WHEN CONNECTING AN
OPEN CONTROL TO:

WHEN CONNECTING AN
CLOSE CONTROL TO:

MAXIMUM RUN TIME: 1 - ON: Maximum run time is 90 seconds.
OFF: Maximum run time is 45 seconds.

OPEN AND CLOSE CONTROL OPTIONS
11

- Open control will require constant
pressure to keep door moving.

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

- Open control will only require
momentary contact and will set or
reset timer to close.

MAXIMUM RUN TIME: 3 - OFF: (DO NOT ADJUST)
4 - OFF: (DO NOT ADJUST)
CONSULT FACTORY FOR ADJUSTEMENT

- Open control will only require
momentary contact and will NOT
set or reset timer to close.

TIMER TO CLOSE SWITCH SETTING:
O = ON F = OFF

SWITCH #2 SETTINGS

- 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.

SETTING
1234
OOOO
FOOO
OFOO
FFOO
OOFO
FOFO
OFFO
FFFO

TIME
=
=
=
=
=
=
=
=

Disabled
2 sec
3 sec
13 sec
15 sec
23 sec
32.5 sec
43.6 sec

SETTING
1234
OOOF
FOOF
OFOF
FFOF
OOFF
FOFF
OFFF
FFFF

TIME
=
=
=
=
=
=
=
=

72 sec
88 sec
107 sec
126sec
148 sec
172 sec
198 sec
224 sec

SINGLE PHASE SCHEMATIC DIAGRAM for LGJ

1666

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

MODEL MGJ

MODEL LGJ

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.

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.

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.

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.

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.

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.

MOUNT WARNING NOTICE
WARNING

WARNING

IMPORTANT: Mount WARNING NOTICE beside or
below the push button station.

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.

Control Station

OPEN

Push
Buttons

CAUTION

WARNING
CLOSE

TO PREVENT ENTRAPMENT
DO NOT START DOOR DOWNWARD
UNLESS DOORWAY IS CLEAR

WARNING
STOP

WARNING Notice

SINGLE PHASE SCHEMATIC DIAGRAM for MGJ

THREE PHASE SCHEMATIC DIAGRAM for MGJ

1754

(OPTIONAL)

BIMETAL
RELAY
C

MAX.
100W

BL/BK

BRN

BK
A

WIRE NUT
CLOSE-B

YEL

BRN

O/L*
BL/BK

YEL

O/L*

BRN

BL/BK

460 VOLT - 3 PHASE
MOTOR CONNECTION
(GY)

RES.

(BK)

MOTOR *

OPEN-A

O/L

Y
R

3 PHASE
POWER IN

L1 (N)

(PUR)
1

CL
6

WIRE NUT

TO MOTOR

(BK)

OP
5

CAPACITOR

(YEL)
5
(BK)

(BK)

(BR)

STOP

10VA.

EXTERNAL
INTERLOCK

Y/BK

OVERLOAD
(IN MOTOR)

(BRN)

OP
OPEN

OPEN-B

OPEN

CLOSE-A

SAFETY
EDGE

(GY)

(OR)

AUX. CLOSE
LIMIT SWITCH
NC

OR
N.C.

(OR)

(RED)

(OR)

OPEN
LIMIT SWITCH
NC

(GY)

(RED)

OPEN & CLOSE

(OR)

RADIO TO
OPEN & CLOSE

(YEL)

NO
(PUR)

(PUR)

(PUR)
A2

(PUR)
CL
A1

AUX.
OPEN
L/S

CLOSE L/S
CL

P
N.C.

(RED)

NOTE:
1. Voltage same as line voltage.

Shipped from Factory

CLOSE CONTROL WIRING OPTIONS

*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

* TO REVERSE MOTOR ROTATION INTERCHANGE
RED AND YELLOW MOTOR WIRES.
12

(RED)

AUX. OPEN
LIMIT SWITCH

PULL SWITCH
Y

(OR)

OPEN & CLOSE

(OR)

(YEL)

11
C

SAFETY EDGE

OPEN L.S.

1
AUX.
CLOSE
L/S
10

N.O.

24VAC
SEC.

T1 (SEE NOTE #1)

(YEL)

R
BL

PRI.

(BRN)

24VAC.
SEC.
MOVE JUMPER WIRE TO TERMINAL #2
FOR MOMENTARY CONTACT ON CLOSE

STOP

PR1.

1
2

N.O.

GY
PUR

230 VOLT - 3 PHASE
MOTOR CONNECTION

GY
PUR

BL/BK

BRN

230V BRAKE
(WHEN PRESENT)

LIGHT

(HOT) L2

1819

CLOSE
LIMIT SWITCH

(PUR)

WIRE
NUT

SINGLE PHASE SCHEMATIC DIAGRAM for MGJ

THREE PHASE SCHEMATIC DIAGRAM for MGJ

1754

(OPTIONAL)

BIMETAL
RELAY
C

MAX.
100W

BL/BK

BRN

BK
A

WIRE NUT
CLOSE-B

YEL

BRN

O/L*
BL/BK

YEL

O/L*

BRN

BL/BK

460 VOLT - 3 PHASE
MOTOR CONNECTION
(GY)

RES.

(BK)

MOTOR *

OPEN-A

O/L

Y
R

3 PHASE
POWER IN

L1 (N)

(PUR)
1

CL
6

WIRE NUT

TO MOTOR

(BK)

OP
5

CAPACITOR

(YEL)
5
(BK)

(BK)

(BR)

STOP

10VA.

EXTERNAL
INTERLOCK

Y/BK

OVERLOAD
(IN MOTOR)

(BRN)

OP
OPEN

OPEN-B

OPEN

CLOSE-A

SAFETY
EDGE

(GY)

(OR)

AUX. CLOSE
LIMIT SWITCH
NC

OR
N.C.

(OR)

(RED)

(OR)

OPEN
LIMIT SWITCH
NC

(GY)

(RED)

OPEN & CLOSE

(OR)

RADIO TO
OPEN & CLOSE

(YEL)

NO
(PUR)

(PUR)

(PUR)
A2

(PUR)
CL
A1

AUX.
OPEN
L/S

CLOSE L/S
CL

P
N.C.

(RED)

NOTE:
1. Voltage same as line voltage.

Shipped from Factory

CLOSE CONTROL WIRING OPTIONS

*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

* TO REVERSE MOTOR ROTATION INTERCHANGE
RED AND YELLOW MOTOR WIRES.
12

(RED)

AUX. OPEN
LIMIT SWITCH

PULL SWITCH
Y

(OR)

OPEN & CLOSE

(OR)

(YEL)

11
C

SAFETY EDGE

OPEN L.S.

1
AUX.
CLOSE
L/S
10

N.O.

24VAC
SEC.

T1 (SEE NOTE #1)

(YEL)

R
BL

PRI.

(BRN)

24VAC.
SEC.
MOVE JUMPER WIRE TO TERMINAL #2
FOR MOMENTARY CONTACT ON CLOSE

STOP

PR1.

1
2

N.O.

GY
PUR

230 VOLT - 3 PHASE
MOTOR CONNECTION

GY
PUR

BL/BK

BRN

230V BRAKE
(WHEN PRESENT)

LIGHT

(HOT) L2

1819

CLOSE
LIMIT SWITCH

(PUR)

WIRE
NUT

SINGLE PHASE SCHEMATIC DIAGRAM for LGJ

1666

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

MODEL MGJ

MODEL LGJ

MOUNT WARNING NOTICE
WARNING

WARNING

IMPORTANT: Mount WARNING NOTICE beside or
below the push button station.

Control Station

OPEN

Push
Buttons

CAUTION

WARNING
CLOSE

TO PREVENT ENTRAPMENT
DO NOT START DOOR DOWNWARD
UNLESS DOORWAY IS CLEAR

WARNING
STOP

WARNING Notice

MAINTENANCE SCHEDULE

LGJ CONTROL CONNECTION DIAGRAM
41B6

Check at the intervals listed in the following chart.
LISTED DOOR OPERATOR

ITEM
Drive Chain

PROCEDURE
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

EVERY
3 MONTHS

EVERY
6 MONTHS

EVERY
12 MONTHS

7
OR
4

11
OR
9
OR
8

OPEN

Check for wear & lubricate

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

SENSING
EDGE

STOP

ANY
OPEN & CLOSE
CONTROL
(SEE NOTE)

ANY OPEN
CONTROL
(SEE NOTE)

Repeat ALL procedures.
STANDARD
3 BUTTON CONTROL

OR
4

OR
11

5
7
OR
4

OPEN
CLOSE

2 BUTTON
CONTROL
(SEE NOTE)

11
OR
9
OR
8

7
OR
4

11
OR
9
OR
8

7
OR
4

11
OR
9
OR
8

OPEN

STOP

OFF
ON

3 BUTTON CONTROL
WITH
MULTIPLE CONTROL STATIONS

3 BUTTON CONTROL
WITH
KEYED LOCK-OUT

IMPORTANT NOTE:

WHEN STOP BUTTON IS NOT USED, ADD A JUMPER FROM
TERMINAL 3 TO TERMINAL 5.

SWITCH #1 SETTINGS

WHEN CONNECTING AN
OPEN CONTROL TO:

WHEN CONNECTING AN
CLOSE CONTROL TO:

MAXIMUM RUN TIME: 1 - ON: Maximum run time is 90 seconds.
OFF: Maximum run time is 45 seconds.

OPEN AND CLOSE CONTROL OPTIONS
11

- Open control will require constant
pressure to keep door moving.

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

- Open control will only require
momentary contact and will set or
reset timer to close.

MAXIMUM RUN TIME: 3 - OFF: (DO NOT ADJUST)
4 - OFF: (DO NOT ADJUST)
CONSULT FACTORY FOR ADJUSTEMENT

- Open control will only require
momentary contact and will NOT
set or reset timer to close.

TIMER TO CLOSE SWITCH SETTING:
O = ON F = OFF

SWITCH #2 SETTINGS

- 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.

SETTING
1234
OOOO
FOOO
OFOO
FFOO
OOFO
FOFO
OFFO
FFFO

TIME
=
=
=
=
=
=
=
=

Disabled
2 sec
3 sec
13 sec
15 sec
23 sec
32.5 sec
43.6 sec

SETTING
1234
OOOF
FOOF
OFOF
FFOF
OOFF
FOFF
OFFF
FFFF

TIME
=
=
=
=
=
=
=
=

72 sec
88 sec
107 sec
126sec
148 sec
172 sec
198 sec
224 sec

REPLACEMENT PART KITS LGJ

LGJ LIMIT SWITCH ADJUSTMENT

Complete Electrical Box Replacement Kit
K-LGJ2511

Model LGJ2511

K75-12583

LGJ Limit Shaft Assembly
LGJ Limit Switch Assembly
LGJ PC Board Assembly

K72-12581
Item

Description

Qty

L1 11-11425

Limit Shaft

L2 12-10458

3/8” Bearing, Plastic Flange

L3 13-10024

Limit Nut

L4 15-48B07AXX Sprocket, 48B07

L5 81-11443

Rotor for RSL Assembly

L6 80-10053

Washer, Shim

L7 80-10025

Washer, Shim

L8 80-10026

Washer, Shim

L9 86-RP04-012

Roll Pin, 1/8” Dia. x 3/4” Long

L10 87-E-038

E Ring, 3/8”

Item

P/N

LIMIT SWITCH ASSEMBLY KIT
Description

Model LGJ2511

Qty

S1 10-11391

Depress Plate

S2 18-10036

Spring, Depress Plate

S3 23-10041

Limit Switch

S4 23-11442

Limit Switch

S5 80-11445

Standoff, #4-40 Threaded x .19 Long

S6 82-PX04-16

Screw, #4-40 x 1” Pan Head Ph

S7 82-PX06-16

Screw, #6-32 x 1” Pan Head Ph

S8 84-LH-06

Locknut #6-32

Item

P/N

1
2
3
4
5
6
7
8
9
L1
L2
L3
L4
L5
L6
L7
L8
S1
S2
S3
S4
S5
S6
S7
S8

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).

WARNING

WARNING
NEVER PLACE HANDS OR TOOLS INSIDE
OPERATOR OR NEAR MECHANISM UNLESS
POWER IS OFF!!

Model LGJ2511

COMPLETE ELECTRICAL BOX KITS

LIMIT SHAFT ASSEMBLY KIT

P/N

K75-12582

K20-1025C1

Disconnect Assembly Kit

Electrical Box Sub-Assembly Kits
K72-12581
K75-12582
K79-11384

Motor Kit

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.

QTY
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

B. Manually raise the door to a nearly open position.
(see page 17, Manual Operation)

CAUTION

WARNING

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.

D. Manually lower the door to a nearly closed
position, and repeat step C with the CLOSE (right)
limit nut.

NOTE: See Mounting Options on page 5 to verify the
correct mounting application.

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 Layout

If you operator is mounted Motor
Side Up: Set dip switch SW1 - pole
#2 to “ON” position

Limit Switch -B(Top Switch)
Limit Switch -B(Bottom Switch)

Limit Nut

Limit Switch -A(Top Switch)

When SW1 - pole 2 position is
“OFF”: Limit switch -A- is the
CLOSE limit. Limit Switch -B- is the
OPEN limit.

Dip Switch
SW1

Limit Switch -A(Bottom Switch)
16

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
LGJ ELECTRICAL BOX - ILLUSTRATED PARTS

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.

L3
1

L1
L10
L9

L5
7

L10

L3
L8
L7

MGJ LIMIT SWITCH ADJUSTMENT

WARNING

4
3

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

L2
L6
L10

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

CAUTION

WARNING
S8
2

OPEN Limit Switch
S1

CLOSE Limit Switch

Actuator
S4

6
8

Retaining Plate
SAFETY
(Aux. Close) Limit Switch

Aux. OPEN Limit Switch
8

D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13

PART #

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

DESCRIPTION

INDIVIDUAL PARTS

QTY

ITEM

PART #

1
1
1
1
1
1
1
1
5
1
1
1
1

1
2
3
4
5
6
7
8

10-11397
10-11389-1
10-11398-2
32-11435
See Page 16
See Page 16
84-FN-10
84-FN-19144

DESCRIPTION

Support Bracket
Mounting Bracket (LH)
Mounting Bracket (RH)
Gear Reducer, 40:1
Electrical Box
Motor
Nut
Stud

QTY

1
1
1
1
1
1
1
1

WARNING

EMERGENCY MANUAL OPERATION

CAUTION

WARNING

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

TURN OFF POWER TO THE OPERATOR BEFORE
MANUALLY OPERATING YOUR DOOR.

18
7

OPERATOR MOUNTING

LGJ ILLUSTRATED PARTS

2
7

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

D11
D5

D12

Typical Right Hand
Wall Mounted Operator

FIGURE 3

D9
4

FIGURE 4
3

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

D2
D8

D10

D6
D13
D4

Chain Keeper

FIGURE 5

Motor Kits

Complete Electrical Box Replacement Kits
K-MGJ5011L
K-MGJ5023L
K-MGJ5025L
K-MGJ5038L
K-MGJ5043L

Model MGJ5011L
Model MGJ5023L
Model MGJ5025L
Model MGJ5038L
Model MGJ5043L

K-MGJ5011R
K-MGJ5023R
K-MGJ5025R
K-MGJ5038R
K-MGJ5043R

Model MGJ5011R
Model MGJ5023R
Model MGJ5025R
Model MGJ5038R
Model MGJ5043R

K20-1050C1M
K20-3050C4M
K20-5150C6M

RELEASE
CABLE
SLOT

Model MGJ5011
Models MGJ5023,MGJ5038,MGJ5043
Model MGJ5025

Disconnect Assembly Kit
K75-12567

HOUR GLASS
CABLE SLEEVE

Model MGJ Operators

KEY RING

K72-12565
Item
L1
L2
L3
L4
L5
L6
L7
L8

Electrical Box Sub-Assemblies
K72-12565
K75-12566

SUPPORT
BRACKET

MGJ Limit Shaft Assembly
MGJ Limit Switch Assembly

P/N
11-11373
12-10458
13-10024
15-48B07AXX
80-10026
85-FW-38
86-RP04-012
87-E-038

LIMIT SHAFT ASSEMBLY KIT
Qty
1
2
2
1
1
2
1
1

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”

FIGURE 2

SASH CHAIN

Disconnect Cable Re-routed for Left Hand Mounting

LABEL

COMPLETE ELECTRICAL BOX KITS
K75-12566

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

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

LIMIT SWITCH ASSEMBLY KIT
Qty
1
2
4
8
2
8
4
2

SILK
SCREEN

P/N

21-5115
21-5230
21-5460

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

MGJ5038

Item

MGJ5025

VARIABLE COMPONENT KITS
MGJ5043

MGJ5023

MGJ5011

Item
1
2
3
4
5
6
7
8
9
10
L1
L2
L3
L4
L5
L6
L7
L8
S1
S2
S3
S4
S5
S6
S7
S8

FIGURE 3

MGJ ELECTRICAL BOX - ILLUSTRATED PARTS

1
L8
L6
L2

described below and as shown in figures 2 and 3.

IMPORTANT: Refer to page 9 for for complete
instructions on setting of limit switches.

L1
S3

L7
S7
S4

L2
L5

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. 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.

L3
S5
7

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

S8
S1

FIGURE 1

6
2

HOUR GLASS
CABLE SLEEVE

SLOT

8
RELEASE
CABLE

SUPPORT
BRACKET

5
KEY RING

10
SASH CHAIN

Disconnect Cable as shipped from the factory

IMPORTANT SAFETY NOTES

K75-12567 DISCONNECT ASSEMBLY KIT
ITEM

D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15

PART #

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

DESCRIPTION

QTY

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

ITEM

PART #

1
2
3
4
5

10-11357
10-11359
32-11414
See Page 20
See Page 20

DESCRIPTION

QTY

Brake Mounting Plate
Front Bracket
Gear Reducer, 45:1
Electrical Box
Motor

1
1
1
1
1

CAUTION

Shaft Support Bracket
with Bearing (Not Supplied)
Door Sprocket

The safety and wear of the operator will be adversely affected
if any of the above requirements are not met.
2-1/4"
2.75
for MGJ, butt together for LGJ

FIGURE 1

OPERATOR PREPARATION
Model LGJ:

Shipped from the factory for right hand mounting, refer to preparation instructions on page 4 for
Left hand mounting.

Model MGJ:

MGJ OPPOSITE HANDING PREPARATIONS
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.

1. Remove Disconnect Assembly Components
Remove the master link from the limit chain, remove
the chain and set it aside.
KEYS
SPRING
DISC
HUB

SPROCKET
E RING
SHAFT
BRACKET
YOKE

DISC
LEVER

ILLUSTRATED PARTS – MODEL MGJ
SPECIFICATIONS
MOTOR

ELECTRICAL
TRANSFORMER:.............24VAC

HORSEPOWER: ................MGJ: 1/2Hp 1 or 3 Phase
LGJ: 1/4 Hp 1 Phase

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

D11

D2
D13

D14

CURRENT: See motor nameplate

D15

D12

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

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

OUTPUT SPROCKET:...........Size #41
DOOR SPEED: . . . . . . . . . . MGJ: 1Ph, 23RPM

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

D13

LGJ: .1Ph, 43RPM

3Ph, 39RPM

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

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

DISCONNECT :.......................Floor level disconnect for
emergency manual door operation.

D15

SAFETY

MECHANICAL

D10

MGJ WEIGHTS AND DIMENSIONS
2

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

7.50”

MOUNTING DIMENSIONS

10.50”
11.05”

5.50”

3.00”

7.00”

4.75”

11.00”

9.25”

LGJ WEIGHTS AND DIMENSIONS
HANGING WEIGHT:..........80-110 LBS.

4.50”
2.25”
7.90”

1.96”

.98”

1.97”
MOUNTING DIMENSIONS
8.90”

10.88”
2

OWNER'S MANUAL
MODELS:

LGJ & MGJ

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

2 OR MORE

Open
Close

Open

Stop

INDUSTRIAL DUTY DOOR OPERATOR

KEY LOCKOUT

Close
Stop
Keyswitch

ALL CONTROL WIRING TYPES

1 BUTTON STATION or
ANY AUXILIARY DEVICE

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

2 OR MORE

SEE NOTE #2

Open

SEE NOTES
#2 AND #3

OPEN / CLOSE
ALL CONTROL WIRING TYPES

B2 or T1
WIRING TYPES ONLY

ALL CONTROL WIRING TYPES

SENSING DEVICE TO REVERSE OR STOP

RESIDENTIAL RADIO CONTROLS

* OPEN TIMER TO CLOSE
3

* T1 WIRING - RADIO TO OPEN ONLY

TIMER TO CLOSE w/ WARNING LIGHT

EXTERNAL INTERLOCK

Warning Light will activate 15 sec. before door closes.

Remove Jumper
When Interlock is Used

Auxiliary Terminal Block

4
Timer Defeat
Switch

Power Supply for
Warning Light

ONE
c 2003, The Chamberlain Group, Inc.

NOT FOR RESIDENTIAL USE
41B6

2 OR MORE

ALL CONTROL WIRING TYPES

2 YEAR WARRANTY
Serial #
(located on electrical box cover)

T1 CONTROL WIRING ONLY
01-11452H

EXTERNAL
TERMINAL BLOCK

ALL CONTROL WIRING TYPES

RADIO CONTROL

Sensing Device

Installation Date
Wiring Type
LISTED DOOR OPERATOR

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.6
Linearized                      : Yes
Encryption                      : Standard V2.3 (128-bit)
User Access                     : Print, Extract
Page Mode                       : UseOutlines
XMP Toolkit                     : Adobe XMP Core 4.0-c316 44.253921, Sun Oct 01 2006 17:14:39
Producer                        : Acrobat Distiller 4.0 for Windows
Keywords                        : OWNER'S MANUAL MODELS: LGJ AND MGJ INDUSTRIAL DUTY DOOR OPERATOR
Create Date                     : 2000:03:15 16:52:02Z
Modify Date                     : 2008:01:02 20:42:16-07:00
Metadata Date                   : 2008:01:02 20:42:16-07:00
Format                          : application/pdf
Title                           : OWNER'S MANUAL MODELS: LGJ AND MGJ INDUSTRIAL DUTY DOOR OPERATOR
Description                     : OWNER'S MANUAL MODELS: LGJ AND MGJ INDUSTRIAL DUTY DOOR OPERATOR
Creator                         : THE CHAMBERLAIN GROUP, INC.
Document ID                     : uuid:e4ed1b7e-cb5a-4730-b96e-3182425e8159
Instance ID                     : uuid:b1e86394-566f-4f43-8fb5-848190dec953
Page Count                      : 24
Subject                         : OWNER'S MANUAL MODELS: LGJ AND MGJ INDUSTRIAL DUTY DOOR OPERATOR
Author                          : THE CHAMBERLAIN GROUP, INC.

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Liftmaster Lgj Owners Manual OWNER'S S

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