LiftMaster MJ Support Question
LiftMaster MJ Support Question
Find answers below for this question about LiftMaster MJ.Need a LiftMaster MJ manual? We have 4 online manuals for this item!
Question posted by charlieriser on March 16th, 2023
Replacement Motor Is There A Direct Replacement Motor For The Model Mj1211 ?
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Current Answers
Answer #1: Posted by SonuKumar on March 16th, 2023 8:06 PM
SonuKumar
Member since:
May 9th, 2021 Points: 16,641,150
Member since:
May 9th, 2021 Points: 16,641,150
https://www.liftmaster.com/mj-jackshaft-operator-medium-duty-door-operator/p/MJ
genunie part are availalble with dealer only, please click on dealer near me
Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.
Regards,
Sonu
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Related LiftMaster MJ Manual Pages
MGJ User's Guide Manual - Page 4
... prohibited, except for changing the code setting or replacing the battery.
Press and hold the button on the logic
board (OPEN, CLOSE or STOP). Electrical Box
Logic Board
014A1030...OPEN
LED
2
3
4
5
6
7
K2 LT
C29 R24 P1
D9
LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
LEARN STOP CLOSE OPEN LEDD14
1
2
3
4
5
67
MEP1 LMEP2 COM INTRLK STOP CLOSE OPEN
NOTICE: To comply with door ...
MGJ User's Guide Manual - Page 5
... operating the door in the desired direction by slipping the end through the keyhole of the chain retaining bracket mounted on one side or the other of persons and obstructions. MODEL MT/BMT
Emergency Disconnect
CAUTION
To prevent possible SERIOUS INJURY or DEATH from the chain retaining bracket before the door will
Door
open door falling rapidly...
MGJ User's Guide Manual - Page 8
...contact your installing dealer.
➤ See PROGRAMMING REMOTE CONTROLS section. ➤ Replace battery. ➤ Replace battery. ➤ Replace battery. ➤ Contact your installing dealer. ➤ Verify photo eyes are... BUT DOOR DOES
NOT MOVE
DOOR DRIFTS AFTER OPERATOR STOPS
Operator or door requires adjustment
DOOR OPENS/CLOSES Operator requires adjustment TOO FAR
DOOR REVERSES ...
MJ5011E QuickStart-2008 Manual - Page 1
... in the desired direction by slipping the end through the keyhole of
the purchaser, designer, installer and end user to door shaft and sprockets are equipped with a manual hoist. Refer to operate the door again electronically. Refer to the operator. a Electrical Interlock with adjustments.
7 Align Sprockets
Optimum Distance 12-15"
MODEL MJ This operator has...
MJ5011E Installation-2008 Manual - Page 4
MJ Floor level disconnect for
emergency manual chain hoist operation. ENVIRONMENTAL
LOCATION Indoor, dry location OPERATING TEMPERATURE 4˚ F to +122˚ F (-20C˚ to 14' door Max... cm)
9.19" (293..1394"cm)
Hand Chain Wheel present with model MH only.
7.070" " (17.78 cm)
OPERATOR SPECIFICATIONS
MOTOR
TYPE Limited duty HORSEPOWER 1/2 HP VOLTAGE 115Vac, Single Phase, 60Hz FULL...
MJ5011E Installation-2008 Manual - Page 5
... the operator. Although each installation will have hoist chain on site. AVERTISSEMENT
HAANDTINTGEIDNENTTIIFOICNATION
For MH and HMS models with : Master links (2),
wall bracket (1), Fastener Bag (1)
WARNING
PREPARATION
WARNING
PREPCARAINUG TYOIUORNDOOR
The manufacturer recommends 3' (91.4 cm) of clearance in the door opening, hook the chain off to the side near the top of the...
MJ5011E Installation-2008 Manual - Page 20
... button. (The door should close . 5. Allow the door to fully open . Door should stop .) 3. Allow the door to fully close . WARNING
TESTING
WARNING
CAUTION Turn on power, LED will open . 3.
WARNING
To avoid SERIOUS PERSONAL INJURY or DEATH from obstruction, check safety devices. Door should open direction.) 2. Press OPEN button. (The door should open . 3.
Press CLOSE...
MJ5011E Installation-2008 Manual - Page 22
...is not activated. E) Motor overload tripped
➤ ...Replace battery. B) Stop circuit not complete
➤ Verify Stop Button input (terminals 3 & 5) is properly wired and stop button is not activated. D) Interlock input activated
➤ Verify jumper is located at terminals L1 & L2.
B) Brake not releasing (if present) ➤ Verify brake assembly operation and wiring. DOOR OPENS...
MJ5011E Installation-2008 Manual - Page 23
... logic board LED to flash 7 times when power is applied or cycled to install external door interlock. TROUBLESHOOTING CONT. NOTE: It is normal for assistance.
Operating in B2 mode Stuck CLOSE button Monitored Safety Device failure
Incorrect motor direction Maximum run timer has timed out (Maximum run time = 90 seconds) Logic Board Failure...
MJ (BLACK LINE) Manual - Page 2
... open override plus wiring for emergency manual door operation. OPEN/CLOSE/STOP
WIRING TYPE C2 (Standard) Momentary contact to OPEN ...DOOR OR ANY OTHER CONTROL (AUTOMATIC OR MANUAL) IS USED.
Model MH: Floor level chain hoist with Model MH only.
7.00"
2 SPECIFICATIONS
MOTOR... door. Output: #48 chain
OUTPUT SHAFT SPEED:.....80 RPM
DOOR SPEED approx. 9" per sec. DISCONNECT :
SAFETY
Model MJ:...
MJ (BLACK LINE) Manual - Page 3
... (Not Provided) Door Sprocket
5-1/2" (13.97 cm)
All MJ, MH, and HMJ... interlock switch.
• ALWAYS call a trained professional door serviceman if door binds, sticks or is out of the model name (R or L). c. The handing is imperative that...door, and in the door opening, hook the chain off to move or adjust doors, door springs, cables, pulleys, brackets or their hardware, ALL of the door...
MJ (BLACK LINE) Manual - Page 7
...of SEVERE INJURY or DEATH:
• ANY maintenance to the operator or in the wrong direction (open when CLOSE button is pressed and vice-versa). Secure locks(s) in the electrical box enclosure....Inside this manual. If this diagram is of this enclosure you will cause the motor to door and operator, make ALL door locks inoperative. Using the 1-1/16" dia conduit access hole as shown below ....
MJ (BLACK LINE) Manual - Page 8
...(s) indicated in the close control in order to keep door moving in the special control wiring data box. A two-position key switch or control station (OPEN/CLOSE) may be used . See close direction is desired (B2 wiring) you must include an entrapment protection device. Replacement Wiring Diagram is used in this setting, the operator...
MJ (BLACK LINE) Manual - Page 9
... used . CAUTIWONARNING gate or garage door:
• ALWAYS keep gate or garage door in sight until there is connected as shown on the FIELD WIRING CONNECTIONS diagram, the control circuit will be disabled when the switch is actuated, thereby preventing electrical operation of
the electrical enclosure.
The operator will then open a fully closed (N.C.) two-wire...
MJ (BLACK LINE) Manual - Page 11
...use grease or
sCilicAonUe sTprIaOy).N
✔ Repeat ALL procedures.
■ Do not lubricate motor. Motor bearings are
rated for excessive slack. Country Club Tucson, AZ 85706
11 WARNING
To avoid...528-2806
WHEN ORDERING REPAIR PARTS PLEASE SUPPLY THE FOLLOWING INFORMATION: PART NUMBER DESCRIPTION MODEL NUMBER
ADDRESS ORDER TO: THE CHAMBERLAIN GROUP, INC.
Technical Support Center 6020 ...
MJ (BLACK LINE) Manual - Page 13
... R1
RADIO REC'R
RESISTOR
TO REVERSE MOTOR DIRECTION INTERCHANGE RED & YELLOW WIRES. HELD CLOSED.
13
INTERLOCK SWITCH (WHEN SUPPLIED) WIRED N.O. W W
WIRING DIAGRAM
1754
OPEN
OR
COM
N.C. Y
Y
CAPACITOR
R
R
W
PRIMARY
BK
XFMR
Y
SECONDARY
** Y INTLK.
BOARD
(When Present)
OPEN CLOSE STOP
RATED LINE VOLTAGE
PULL SWITCH TO OPEN & CLOSE
SAFETY EDGE
See Close Control Wiring...
MJ (BLACK LINE) Manual - Page 15
... 48B9 x 3/8" Powder Metal 1
L5 29-10344 RPM Rotating Cup
1
L6 80-10026 Washer, Shim 3/8" I.D. Comp.) Motor Capacitor
1
* Electrical Box Kits include parts from these lists.
For replacement of electrical box, motor or brake components be sure to match model number of 2) Limit Switch Resistor, 2 Ohm Transformer, 115V Transformer, 230V Capacitor, 70MFD Capacitor, 20MFD Relay...
MJ (BLACK LINE) Manual - Page 17
...MODEL MJ
ITEM 1 2 3 4
5
INDIVIDUAL PARTS
PART# 10-10030 10-10713 10-10714 K-HMJ5011R
K-HMJ5011L
K-HMJ5011R
K-HMJ5011R
K20-5150LD K20-5250LD
DESCRIPTION
Frame Spacer
Frame, Right Side
Frame, Left Side
Electrical Box HMJ5011R, 115V RH Electrical Box HMJ5011L, 115V LH Electrical Box HMJ5025R, 230V RH Electrical Box HMJ5025L, 230V LH
Motor - Model HMJ5011 Motor... Operators
17 Model HMJ5025
ITEM
...
MJ (BLACK LINE) Manual - Page 19
H
17-6014
Motor Pulley
See Motor Replacement Kits, pages 62 & 63
Not Shown 19-48047M
12-10891
Roller Chain, #48x47 Pitch with : ...Ring, Compression Spring, Chain Wheel Assembly, Pulley Assembly, Chain Guide Assembly, Shim Washer, Washer, Thrust Washer and Roll Pins. MODEL MH
ITEM K1
K2
SERVICE KITS
PART# K72-19979
K72-19974
DESCRIPTION
Clutch Shaft Kit
Complete with : Brake Hub Kit, Brake...
MJ (BLACK LINE) Manual - Page 21
...Frame Kit (LH)
K75-19978-R
Frame Kit (RH)
K75-19977
J Arm Kit
17-6014
Motor Pulley
See Motor Replacement Kits, page 63
Not Shown 19-48047M
Roller Chain, #48x47 Pitch with : Brake Hub ...* 71-B240H* 71-B575H*
Brake Kit, 115 Volt Models
Brake Kit, 230-460 Volt Models
Brake Kit, 575 Volt Models
Complete with Master Link
21 REPLACEMENT PARTS LIST - Output Shaft Kit
Complete with : Clutch ...
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