LiftMaster MGJ S-Series Industrial Duty Door Operator Owner’s Manual
- June 16, 2024
- LiftMaster
Table of Contents
LiftMaster MGJ S-Series Industrial Duty Door
Before attempting to install, operate or maintain the operator, you must read
and fully understand this manual and follow all safety instructions.
These instructions are intended to highlight certain safety related issues.
These instructions are not intended to be comprehensive. Because each
application is unique, it is the responsibility of the purchaser, designer,
installer and end user to ensure that the total door system is safe for its
intended use.
HARDWARE PACKING LIST
Before beginning your installation check that all components were supplied and
received undamaged. Refer to list below for Factory Supplied parts.
HARDWARE KIT MGJ SSSI (K77-18599)
PART #| DESCRIPTION| QTY.
01-18600| OWNERS MANUAL, MGJ SSSI| 1
02-103-R| REWORK, PBS, RED PAINT| 1
10-10463| KEY HOLE BRACKET| 1
19-41119MB| CHAIN #41X119 W/ MASTER| 1
77-13709| LABEL KIT MED DUTY| 1
SPECIFICATIONS
MOTOR
- TYPE: ……………………………Intermittent Duty
- HORSEPOWER:……………..1/2Hp 1 or 3 Phase
- SPEED:………………………….1050 RPM
- VOLTAGE: ……………………..115, 60HZ, 1Ph 230V, 60Hz, 3Ph
- CURRENT: See motor nameplate
ELECTRICAL
- TRANSFORMER:………….24VAC
- CONTROL STATION:……NEMA 1 three button station.
- OPEN/CLOSE/STOP
- WIRING TYPE:……………..B2-C2 (Factory Shipped)
- LIMIT ADJUST:…………….Linear driven, fully adjustable screw type cams. Adjustable to 24 feet.
MECHANICAL
- DRIVE REDUCTION:…. . . . . . . . . . . 40:1 Reduction
- (Heavy duty wormgear-in-oil-bath speed reducer)
- OUTPUT SPROCKET: ……….Size #41
- DOOR SPEED: . . . . . . . . . 1Ph, 23RPM 3Ph, 39RPM
- BEARINGS: Heavy duty wormgear-in-oil-bath speed reducer
SAFETY
- DISCONNECT :…………………..Floor level disconnect for emergency manual door operation.
- REVERSING EDGE:……………(Optional) Electric
- 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
IMPORTANT SAFETY NOTES
CAUTION
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.
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.
SITE PREPARATIONS
It is imperative that the wall or mounting surface provide adequate support for the operator.
This surface must
- Be rigid to prevent play between operator and door shaft.
- Provide a level base.
- 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. See Figure 1.
OPPOSITE HANDING PREPARATIONS
Shipped from the factory for either left hand or right hand mounting. Refer to next to 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 5.
- Remove Disconnect Assembly Components
- Remove the master link from the limit chain, remove thechain 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.
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 flat washer 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.
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.
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.
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.
- Place door sprocket on the door shaft. Do not insert the key at this time.
- Wrap drive chain around door sprocket and join roller chain ends together with master link.
- Raise operator to approximate mounting position and position chain over operator sprocket.
- 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.
- Align sprockets and secure, (see Figure 5).
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
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
MPORTANT
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.
EMERGENCY MANUAL OPERATION
CAUTION
TURN OFF POWER TO THE OPERATOR BEFORE
MANUALLY OPERATING YOUR DOOR.
This operator has 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.
- 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.
- The door may now be pushed up or pulled down manually. Release the disconnect chain to operate the door again electrically.
ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
ELECTRIC SENSING EDGES
Electric sensing edges with an isolated normally open (N.O.) output are
compatible with your operator. 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
- Proceed with Limit Switch Adjustments before making any sensing edge wiring connections to operator as described below.
- Electrician must hardwire the junction box to the operator electrical box in accordance with local codes.
IT IS STRONGLY RECOMMENDED THAT A SENSING EDGE OR OTHER ENTRAPMENT PROTECTION DEVICE BE USED IN CONJUNCTION WITH THIS OPERATOR.AN ELECTRIC SENSING EDGE IS REQUIRED WHEN USING THIS OPERATOR IN CONJUNCTION WITH THE SS90 FIRE DOOR CONTROLLER.
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.
LIMIT SWITCH ADJUSTMENT
MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS
BEFORE PROCEEDING WITH ADJUSTMENTS.
- 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.
- To increase door travel, spin nut away from actuator. To decrease door travel, spin limit nut toward actuator.
- Adjust open limit nut so that door will stop in open position with the bottom of the door even with top of door opening.
- 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
TO AVOID SERIOUS PERSONAL INJURY OR DEATH FROM ELECTROCUTION, DISCONNECT
ELECTRIC POWER BEFORE MANUALLY MOVING LIMIT NUTS.
MAINTENANCE SCHEDULE
Check at the intervals listed in the following chart.
- 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.
HOW TO ORDER REPAIR PARTS & CUSTOMER SUPPORT
- INSTALLATION AND SERVICE INFORMATION
- ARE AVAILABLE 5 DAYS A WEEK
- CALL OUR TOLL FREE NUMBER – 866-522-9007
- HOURS 8:00 TO 5:00 p.m. Eastern Standard Time)
- MONDAY Through FRIDAY
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
SPECIAL CONTROL WIRING
Standard C2 or B2 Wiring
Model MGJ operators are shipped from the factory with jumper set for C2
wiring, which requires constant pres- sure on button to close the door. If
momentary contact on 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 elec- trical enclosure. The
operator will require constant pres- sure on close control in order to keep
door moving in the close direction.
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 dia- grams) 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. 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 pro- vided. 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 STALLED WHERE DOOR IS TAILE, ON IF ARE DEVICE OTHER THAN THE CONTROL
STATION IS USED TO ACTIVATE THE DOOR, A REVERSING EDGE MUST BE INSTALLED ON
THE BOTTOM OF THE UNDER TALE CIRCUS ANCES MAR RESUETIN SERIOUS INJURY OR DEATH
TO PERSONS TRAPPED BENEATH THE DOOR.
MOUNT WARNING NOTICE
IMPORTANT
Mount WARNING NOTICE beside or below the push button station
SINGLE PHASE SCHEMATIC DIAGRAM
THREE PHASE SCHEMATIC DIAGRAM
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 8 for all repair part ordering information.
Complete Electrical Box Replacement Kits
- K-MGJ5011L Model MGJ5011LS
- K-MGJ5023L Model MGJ5023LS
- K-MGJ5011R Model MGJ5011RS
- K-MGJ5023R Model MGJ5023RS
Electrical Box Sub-Assemblies
- K72-12565 MGJ Limit Shaft Assembly
- K75-18566 MGJ SSSI Limit Switch Assembly
- Motor Kits
- K20-1050C1M-R Model MGJ5011
- K20-3050C4M-R Models MGJ5023
Disconnect Assembly Kit
COMPLETE ELECTRICAL BOX KITS
Item P/N Description Qty
1 03-11112| Reversing Contactor (See Notes)| 1
2 10-11403-R| Electrical Box Cover| 1
3 10-11420-R| Electrical Box| 1
4 10-11421| Capacitor Clamp (See Notes)| 1
5 (See Var. Comp.)| Transformer| 1
6 24-24-1| 24V DPDT Relay| 2
7 29-10338| Capacitor, 7MFD (See Notes)| 1
8 29-2| Resistor, 20 Ohm| 1
9 42-10040| Terminal Block Assy, 3 Lug| 1
10 42-110| 10 Position Terminal Block| 1
11 42-112-2| 12 Position Terminal Block| 1
12 40-18552| Auxiliary Block Marker| 1
13 10-18552| Bracket, Auxiliary Terminal Block| 1
K75-12567 Model MGJ Operators
K72-12565 LIMIT SHAFT ASSEMBLY KIT
Item| P/N| Description| Qty
L1| 11-11373| MGJ Limit Shaft| 1
L2| 12-10458| 3/8” Bearing, Plastic Flange| 2
L3| 13-10024| Limit Nut| 2
L4| 15-48B07AXX| Sprocket, 48B07| 1
L5| 80-10026| Washer, Shim 3/8” I.D. x .01| 1
L6| 85-FW-38| Flatwasher, 3/8”| 2
L7| 86-RP04-012| Roll Pin, 1/8” Dia. x 3/4” Long| 1
L8| 87-E-038| E Ring, 3/8”| 1
K75-18566 LIMIT SWITCH ASSEMBLY KIT
Item| P/N| Description| Qty
S1| 10-11419| Depress Plate| 1
S2| 18-10036| Spring, Depress Plate| 2
S3| 23-10041| SPDT Limit Switch| 2
S4| 31-13062| Spacer, .115” ID x 5/8” Long| 8
S5| 82-PX06-16| Screw, #6-32 x 1” Pan HD PH| 2
S6| 82-PX04-20| Screw, #4-40 x 1-1/2” Pan HD PH| 4
S7| 84-DT-06| Nut, #6-32 Double Tinnerman| 4
S8| 84-LH-06| Locknut #6-32| 2
S9| 23-10041-1| Limit Switch, Double| 2
S10| 82-PX04-24| Screw, #4-40 x 2” Pan HD PH| 4
VARIABLE COMPONENT KITS
Item
|
P/N
|
Description
| MGJ5011| MGJ5023
5
| 21-5115
21-5230
| Transformer, 115V Transformer, 230V| |
NOTES
- Reversing Contactor (03-11112), Used only on three phase operators. Single phase operators use relays.
- Capacitor (29-10338), Capacitor Clamp (10-11421) and Resistor (29-2) used only on single phase operators.
MGJ ELECTRICAL BOX – ILLUSTRATED PARTS
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 8 for all repair part ordering information.
LLUSTRATED PARTS – MODEL MGJ
K75-12567 DISCONNECT ASSEMBLY KIT
ITEM| PART #| DESCRIPTION|
D1| 07-11418| Disconnect Hub| 1
D2| 10-11023| Bevel Gear Yoke| 1
D3| 10-11358| Disconnect Support Bracket| 1
D4| 10-11394| Release Lever| 1
D5| 11-11361| Disconnect Shaft MGJ| 1
D6| 15-11377| Sprocket, 41B19 x 1.25 Bore| 1
D7| 18-10467| Compression Spring| 1
D8| 19-8A-12| 12ft. Of Sash Chain| 1
D9| 80-11416| Disconnect Key 1/4 x 1/4 x 7/8| 2
D10| 80-206-11| Washer, 1” I.D. x 1/16” Thick| 1
D11| 82-SH10-12| Screw, #10-32 Hex Head Socket| 2
D12| 85-LS-10| #10 Lock Washer ZP| 2
D13| 86-CP04-112| Cotter Pin, 1/8” x 1-3/4” Long| 4
D14| 86-RP04-100| Roll Pin, 1/8” Dia. x 1” Long| 1
D15| 87-E-100| E Ring, 1” Plated| 2
INDIVIDUAL PARTS
ITEM
1
| PART #
10-11357
| DESCRIPTION
Brake Mounting Plate
|
1
2| 10-11359| Front Bracket| 1
3| 32-11414-R| Gear Reducer, 45:1| 1
4| See Page 20| Electrical Box| 1
5| See Page 20| Motor| 1
MGJ CONTROL CONNECTION DIAGRAM
IMPORTANT NOTES
- The 3-Button Control Station provided must be connected for operation.
- If a STOP button is not used, a jumper must be placed between termianls 3 and 4.
- Auxiliary control equipment may be any normally open two wire device such as pull switch, single button, loop detector, card key or such device.
ATTENTION ELECTRICIAN
USE 16 GAUGE OR HEAVIER WIRE FOR ALL CONTROL CIRCUIT WIRING. 2002, The
Chamberlain Group, Inc. All rights Reserved