Chamberlain MGJ User manual

OWNER'S MANUAL
MODEL
MGJ (S-Series)
INDUSTRIAL DUTY DOOR OPERATOR
FOR USE WITH SS90 FIRE DOOR CONTROLLER
NOT FOR RESIDENTIAL USE
LISTED DOOR OPERATOR
41B6
Serial #
(located on electrical box cover)
Installation Date
Wiring Type
2 YEAR WARRANTY

2
TABLE OF CONTENTS
HARDWARE PACKING LIST
Before beginning your installation check that all components were supplied and received undamaged. Refer to list below
for Factory Supplied parts.
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.
PART #
01-18600
02-103-R
10-10463
19-41119MB
77-13709
QTY.
1
1
1
1
1
DESCRIPTION
OWNERS MANUAL, MGJ SSSI
REWORK, PBS, RED PAINT
KEY HOLE BRACKET
CHAIN #41X119 W/ MASTER
LABEL KIT MED DUTY
HARDWARE KIT MGJ SSSI (K77-18599)
OPERATOR SPECIFICATIONS
Hardware Packing List . . . . . . . . . . . . . . . . . . . . .2
Operator Specifications . . . . . . . . . . . . . . . . . . . .3
Operator Dimensions . . . . . . . . . . . . . . . . . . . . . .3
Safety Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Site Preparation . . . . . . . . . . . . . . . . . . . . . . . . . .4
Handing Preparation . . . . . . . . . . . . . . . . . . . . . . .4
Operator Mounting
. . . . . . . . . . . . . . . . . . . . . . . . . .5 & 6
Entrapment Protection . . . . . . . . . . . . . . . . . . . . .7
Limit Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . .7
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . .8
Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Single Phase Wiring Diagram . . . . . . . . . . . . . . . .10
Three Phase Wiring Diagram . . . . . . . . . . . . . . . .11
Replacement Parts Electrical Box . . . . . . . . . . . . .12
Electrical Box Diagram . . . . . . . . . . . . . . . . . . . . .13
Replacement Parts Frame . . . . . . . . . . . . . . . . . .14
Frame Diagram . . . . . . . . . . . . . . . . . . . . . . . . . .15
Control Connections . . . . . . . . . . . . . . . . . . . . . . .16

3
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
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 WHENTHE 3 BUTTON CONTROL STATION
IS OUT OF SIGHT OF DOOR OR ANY OTHER CON-
TROL (AUTOMATIC OR MANUAL) IS USED.
SPECIFICATIONS
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.
7.50”
7.00” 11.00”
9.25”
10.50”
11.05”
MOUNTING DIMENSIONS
3.00”
5.50”
4.75”
MGJ WEIGHTS AND DIMENSIONS
HANGING WEIGHT: .........80-110 LBS.

4
2-1/4"
FIGURE 1
Shaft Support Bracket
with Bearing (Not Supplied)
Door Sprocket
TO AVOID DAMAGE TO DOOR AND OPERATOR,
MAKE ALL DOOR LOCKS INOPERATIVE. SECURE
LOCK(S) IN "OPEN" POSITION.
IF THE DOOR LOCK NEEDS TO REMAIN FUNCTION-
AL, 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 TEN-
SION AND CAN CAUSE SERIOUS PERSONAL
INJURY. CALL A PROFESSIONAL DOOR SERVICE-
MAN TO MOVE OR ADJUST DOOR SPRINGS OR
HARDWARE.
WARNING
CAUTION
CAUTION
WARNING
WARNING
WARNING
CAUTION
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. See Figure 1.
IMPORTANT SAFETY NOTES
2.75
Shipped from the factory for either left hand or right hand mounting.Refer to next to last digit in the model number for hand-
ing of your unit. If necessary, model MGJ may also be field modified to accommodate opposite handing. Refer to the con-
version instructions below and on page 5.
KEYS
SPRING
DISCONNECT
HUB
E RING
SPROCKET
YOKE
BRACKET
SHAFT
DISCONNECT
LEVER
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.

5
1a.Wall Mounting
The operator should generally be installed below the door
shaft, and as close to the door as possible. The optimum
distance between the door shaft and operator drive shaft is
between 12” - 15”.Refer to Figure 3.
OPERATOR MOUNTING
IMPORTANT:The shelf or bracket must provide adequate
support, prevent play between operator and door shaft,
and permit operator to be fastened securely and with the
drive shaft parallel to the door shaft.
1b.Bracket or Shelf Mounting
The operator may be mounted either above or below the
door shaft. The optimum distance between the door shaft
and operator drive shaft is between 12” - 15”. Refer to
Figure 4.
1c.Place door sprocket on the door shaft. Do not insert the
key at this time.
2. Wrap drive chain around door sprocket and join roller
chain ends together with master link.
3.Raise operator to approximate mounting position and
position chain over operator sprocket.
4.Raise or lower operator until the chain is slightly taut
(not tight). Make sure the operator output shaft is paral-
lel to door shaft and sprockets are aligned. When in
position, secure the operator to wall or mounting brack-
et.
5.Align sprockets and secure, (see Figure 5).
FIGURE 4
FIGURE 3
Before your operator is installed, be sure the door has been properly aligned and is working smoothly. The operator may
be wall mounted or mounted on a bracket or shelf. If necessary, refer to the operator preparations on page 3. Refer to the
illustration and instructions below that suits your application.
Typical Left Hand
Wall Mounted Operator
Be sure door
sprocket is properly
aligned with drive
before securing to
the shaft.
Chain Keeper
FIGURE 5
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 hous-
ing screws. Replace the screws in the gear reducer and
firmly tighten.
2. Re-assemble Disconnect Assembly
Remove the two screws on the opposite side of the gear
reducer and mount the disconnect support bracket with
the notched side facing the motor. For the remainder of
the installation, follow the steps outlined above in reverse
order, referring to the illustration as necessary.

6
EMERGENCY MANUAL OPERATION
This operator has a floor level disconnect chain to dis-
connect 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 disen-
gaged 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
CAUTION
WARNING
WARNING
Pull sash chain and secure
in bracket for manual oper-
ation of the door.
OPERATOR MOUNTING CONT’D

7
TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER BEFORE MANUALLY MOVING LIMIT NUTS.
WARNING
CAUTION
WARNING
WARNING
LIMIT SWITCH ADJUSTMENT
MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE PRO-
CEEDING WITH ADJUSTMENTS.
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 elec-
trically connected by either coiled cord or take-up reel.
Refer to the steps below
Important Notes:
a) Proceed with Limit Switch Adjustments before mak-
ing any sensing edge wiring connections to operator
as described below.
b) Electrician must hardwire the junction box to the
operator electrical box in accordance with local
codes.
ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
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 junc-
tion box (not supplied) fastened to the wall approximate-
ly halfway up the door opening.
Retaining Plate
CLOSE Limit Switch
SAFETY
(Aux. Close) Limit Switches
(1 Required for SS90 Input)
OPEN Limit Switch
1. To adjust limit nuts depress retaining plate to allow nut
to spin freely. After adjustment, release plate and
ensure it seats fully in slots of both nuts.
2. To increase door travel, spin nut away from actuator.
To decrease door travel, spin limit nut toward actua-
tor.
3. Adjust open limit nut so that door will stop in open
position with the bottom of the door even with top of
door opening.
4. Repeat Steps 1 and 2 for close cycle. Adjust close
limit nut so that actuator is engaged as door fully
seats at the floor.
Actuator
Aux. OPEN Limit Switches
(1 Required for SS90 Input)
AN ELECTRIC SENSING EDGE IS REQUIRED WHEN
USING THIS OPERATOR IN CONJUNCTION WITH
THE SS90 FIRE DOOR CONTROLLER.
WARNING
CAUTION
WARNING
WARNING
IT IS STRONGLY RECOMMENDED THAT A
SENSING EDGE OR OTHER ENTRAPMENT PRO-
TECTION DEVICE BE USED IN CONJUNCTION
WITH THIS OPERATOR.

8
✳✳Use SAE 30 Oil (Never use grease or silicone spray).
✔✔Repeat ALL procedures.
■■Do not lubricate motor. Motor bearings are rated for continuous operation.
■■Inspect and service whenever a malfunction is observed or suspected.
■■CAUTION: BEFORE SERVICING, ALWAYS DISCONNECT OPERATOR FROM POWER SUPPLY.
Check at the intervals listed in the following chart.
EVERY EVERY EVERY
ITEM PROCEDURE 3 MONTHS 6 MONTHS 12 MONTHS
Drive Chain Check for excessive slack.
Check & adjust as required.
Lubricate.* ●✔
Sprockets Check set screw tightness ●●✔✔
Fasteners Check & tighten as required ●●✔✔
Manual Disconnect Check & Operate ●●✔✔
Bearings & Shafts Check for wear & lubricate ●●✔✔
MAINTENANCE SCHEDULE
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

9
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.
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
CAUTION
WARNING
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
USEDTO ACTIVATETHE DOOR,
A REVERSING EDGE
MUST BE INSTALLED ON THE BOTTOM OF THE
DOOR.
FAILURE TO INSTALL A REVERSING EDGE
UNDER THESE CIRCUMSTANCES MAY RESULT IN
SERIOUS INJURY OR DEATH TO PERSONS
TRAPPED BENEATH THE DOOR.
WARNING
TO PREVENT ENTRAPMENT
DO NOT START DOOR DOWNWARD
UNLESS DOORWAY IS CLEAR
OPEN
OPEN
CLOSE
CLOSE
STOP
Control Station
WARNING Notice
Push
Buttons
IMPORTANT: Mount WARNING NOTICE beside or
below the push button station.
MOUNT WARNING NOTICE
DETERMINE WIRING TYPE
Refer to the wiring diagram located on the inside cover the electrical box to determine the type of control wiring.
SPECIAL CONTROL WIRING
If your operator was shipped from the factory with non-
standard control wiring or with optional accessories that
require additional instructions, refer to the wiring dia-
gram(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.
MODEL MGJ

SINGLE PHASE SCHEMATIC DIAGRAM 1893
10
(OPTIONAL)
BIMETAL
CLOSE-A
RED AND YELLOW MOTOR WIRES.
* TO REVERSE MOTOR ROTATION INTERCHANGE
PULL SWITCH
OPEN & CLOSE
CLOSE
TO
SAFETY
EDGE
OPEN
BR
2
P
7
Y
10
GY
Y
AUX.
R1
BR
1
OR
GY
OPEN
AUX.
L/S
OPEN-B
BL
OR
12
BL C
(OPTIONAL 115V OPERATORS ONLY)
CLOSE L/S
BK
3STOP
L2
BK
BK
4
R
OPEN-A
W
C
CAPACITOR
Y
N.O.
100W
MAX.
W
LIGHT RELAY
C
SEC.
OPEN L.S.
CLOSE L/S
P
CL
OR
R
N.O. R
OR
OP
N.C. C
W
W
W
11
BR
L1
MOTOR *
R
Y
10VA.
PR1.
24VAC. Y/BK
W
O/L BK
A
B
W
WIRE NUT
R3
R2
N.C. C
Y
WIRE NUT
CLOSE-B
RES.
BL
Y
21
20
19
17 22
23
P
18
C2 WIRING - Constant Presssure to Close
RED WIRE ON TERMINAL #12 (Shipped from Factory)
B2 WIRING - Momentary Contact to Close
MOVE RED WIRE FROM TERMINAL #12 TO TERMINAL #2
*
CLOSE CONTROL WIRING OPTIONS
- Shipped from Factory
*
REMOVE JUMPER
TO CONNECT
SS90 FIRE DOOR
CONTROLLER
REMOVE JUMPER
TO CONNECT
SS90 FIRE DOOR
CONTROLLER