Chamberlain 3000 User manual

©
The Chamberlain Group, Inc.
A DUCHOSSOIS ENTERPRISE
845 Larch Avenue
Elmhurst, Illinois 60126
OWNER'S MANUAL
SERIES 3000
MODEL GJ
INDUSTRIAL DUTY
GEARHEAD JACKSHAFT OPERATOR
1
2
3
NEC CLASS 2 CIRCUIT
CONTROL
WIRING
CONNECT REVERSING EDGE
SWITCH - SEE INSTALLATION
INSTRUCTIONS
CAUTION
FOR INDOOR USE ONLY
INSTALL MORE THAN 8' ABOVE THE FLOOR
LOCATE CONTROL STATION SO THAT IS WITHIN
SIGHT OF PERSON OPERATING THE CONTROL. DOOR
MUST BE CONTROLLED BY 3 BUTTON STATION ONLY.
Lift-Master
The Professional Line
UL
169l LISTED
COMERCIAL DOOR OPENER
ASSEMBLED IN MEXICO
Model No.
Seial No.
Horsepower.
Voltage/Phase
Amperage
Rated Load
®
®COMMERCIAL DOOR OPERATOR
LISTED
NOT FOR RESIDENTIAL USE
Serial #
(located on electrical box cover)
Installation Date
Wiring Type

2
MECHANICAL
DRIVE REDUCTION: ........40:1 Reduction
Heavy Duty Bronze Worm
Gear Reducer
OUTPUT SHAFT SPEED:.43 R.P.M.
DOOR SPEED:..................4 - 10" per sec.
depending on door
BRAKE:.............................Solenoid Drum Brake
HOIST WHEEL:.................Standard Mounting on
left or right side
SAFETY
DISCONNECT:.............Spring Loaded Floor Level
Disconnect Arm
CLUTCH: (optional)....Adjustable Torque Limiter Type
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. SEE PAGE 7.
MOTOR
TYPE:................................Continuous Duty
HORSEPOWER:...............1/3, 1/2, 3/4 & 1 Hp
Single or Three Phase
1-1/2 & 2 HP Three Phase
SPEED: .............................1725 RPM
VOLTAGE:........................115/230 Single Phase
208-230/460 Three Phase
CURRENT:........................See Motor Nameplate
SPECIFICATIONS
ELECTRICAL
TRANSFORMER: ...........24VAC
CONTROL STATION:.....3 Button
OPEN/CLOSE/STOP, NEMA 1
WIRING TYPE: ...............B2 (Standard)
Momentary Contact to OPEN/CLOSE/STOP plus
Wiring for Sensing Device to Reverse and Auxiliary
Devices to Open and Close with Open Override (Other
types available. See chart, Pg. 14)
LIMIT ADJUST: ..............Linear Driven, Fully
Adjustable Screw Type Cams. Adjustable to 30 feet.
A
14 1/2"
8 3/4"
5 1/2"
7 3/8"
14 3/4"
B
4 3/4"
1/2 HP 3/4 HP 1 HP 1-1/2 HP 2 HP
YES NO YES NO YES NO YES NO YES NO
28 9/16" 24 13/16" 28 11/16" 24 15/16" 28 15/16" 25 3/16" 29 1/16" 25 5/16" 29 11/16" 25 15/16"
14 5/16" 10 9/16" 14 7/16" 10 11/16" 14 11/16" 10 15/16" 14 13/16" 11 1/16" 15 7/16" 11 11/16"
GJ OPERATOR
CLUTCH
DIMENSION A
DIMENSION B
WEIGHTS AND DIMENSIONS
HANGING WEIGHT:.......80-110 LBS.

3
INSTALL OPERATOR
FOR SECTIONAL AND ROLLING TYPE DOORS
CAUTION: AT LEAST 2 PERSONS AND A SAFE
WORKING PLATFORM ARE REQUIRED FOR
INSTALLATION.
Check the operator name plate mounted on the
electrical box to be sure the voltage, phase and h.p.
are correct for your needs.
1. Close door.
2. For metal buildings, fasten 2"x2"x3/16" (or larger)
angle iron frames to the building purlins. Retain
2-1/4" between frames. See Figure 1.
3. Place door sprocket and shaft support bracket
(sectional door only) on door shaft as shown.
Attach shaft support bracket to angle brace.
On concrete buildings, attach shaft support bracket
to wall of building.
NOTE 1: On concrete or block walls, install the
operator as shown in Figure 2.
NOTE 2: For standard rolling steel doors, install
operator as shown in Figure 3. (If mounting to a
steel building, make an angle iron mounting
frame as shown in Figure 1.)
6" FIGURE 1
Shaft Support Bracket
with Bearing
(Not Supplied)
Door Sprocket
FIGURE 3
Door
Sprocket
Mounting
Bracket
(Optional)
Drive
Sprocket
Direction of Output Shaft
Rotation for OPEN
FIGURE 2
Mount Door Sprocket to Door.
Sprocket Supplied with Door,
(Not with Operator).
Refer to Door Owner's Manual
for Installing Door Sprocket
Installation of Operator to
Sheet Type Rolling Doors 
or Rolling Doors without
Live Drive Shaft
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.
CAUTION WARNING

4
4. Place drive sprocket on the appropriate side of
the operator. Do not insert the key at this time.
5. Join roller chain ends together with master link.
6. Raise operator to approximate mounting position
and position chain over door and operator
sprockets.
7. Raise or lower operator until the chain is 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.
8. Hand chain wheel is factory installed. To change
position to opposite side of operator, remove E-
ring, chain guide, hand chain wheel and re-install
on operator in reverse order of disassembly.
Place hand chain around hand chain wheel. Be
sure to pass it through both openings in the chain
guide. Remove enough links so chain hangs
approximately two feet above the floor.
9. Uncoil emergency operating cable assembly and
mount the chain keeper bracket to the wall of the
building four feet above the floor, using two 1/4"
dia. bolts.
10. Insert cable assembly into bracket (Figure 6) and
remove slack from the cable by sliding spacer,
handle and set collar up the cable until spacer
touches underside of bracket. Temporarily tighten
set screw in set collar.
11. Remove cable assembly from bracket and slide
spacer, handle and set collar up the cable for a
distance of 3" +1/4". Permanently tighten set
screw in set collar and cut off excess cable about
1/4" from collar.
12. To engage the gears for manual hand chain
operation, pull down on handle and insert chain
keeper into bracket (Figure 6).
NOTE: To maintain proper cable tension during
manual operation, the cable assembly must be
pre-tensioned. Refer to steps 11 and 12 above.
FIGURE 4
Installation of Operator to
Standard Rolling Steel Doors.
Chain Keeper
FIGURE 6
Handle
Spacer
Set Collar
4 Ft.
Above Floor
Cable
NOTE: Vertical installations are standard, as
shown in Figures 2, 3 and 4.
For horizontal mounting applications, relocate the
cable sheave bracket (Figure 5) before proceeding
with the cable assembly installation.
FIGURE 5
Position of cable
sheave bracket for
VERTICAL (standard)
mounting of operator.
Position of cable sheave bracket for
HORIZONTAL mounting of operator.
Relocate bracket using existing hardware.
Cable must exit through slot "B" provided
in cover (Item F).

5
OPTIONAL FEATURES AVAILABLE
REEL (OPTIONAL)
Take-up reel should be installed 12" above the top of
the door. COIL CORD (OPTIONAL)
Connect operator end of coil cord to junction box (not
supplied) fastened to the wall approximately halfway
up the door opening.
Electrician must hardwire the junction box to the
operator electrical box in accordance with local
codes.
13. Complete electrical connections to the operator
and the control station. Fasten the control station
to the wall and MOUNT THE WARNING NOTICE
BESIDE OR BELOW THE PUSH BUTTONS.
14. Apply power to the operator. Press OPEN push
button and observe direction of output shaft
rotation. See Figure 3, page 3. Press the STOP
button.
If shaft does not rotate in the correct direction,
check for improper wiring at the control station or
between operator and control station.
If the operator is three phase and control station
wiring is correct, exchange any two of the three
incoming power leads.
If electrical problems persist, call our Toll Free
number for assistance (1-800-528-6563).
Installation of Operator
to Sectional Door
(Metal Building)
Make-up Box
(Not Provided)
Take-up Reel
(Optional)
Coil Cord
(Optional) Pneumatic Air Switch:
Not required or supplied
when electric sensing
edge is used
Air Hose
Reversing Edge
Wire (24V)
7/8" Hole for CONTROL
(LOW Voltage) Wires
Hole for POWER
(HIGH Voltage) Wires
Sprocket
CONTROL
WIRING
Electrical Box
WARNING
TO PREVENT ENTRAPMENT
DO NOT START DOOR DOWNWARD
UNLESS DOORWAY IS CLEAR
OPEN
CLOSE
STOP
Standard
Control Station
WARNING Notice
Push
Buttons
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 PERSONAL INJURY OR DEATH
TO PERSONS TRAPPED BENEATH THE DOOR.
CABLE CONNECTION NOTE
Be sure to use the control box opening with the 1-
1/16" hole for the POWER cable. All control wires use
the 7/8" hole.
WARNING
DISCONNECT POWER TO THE FUSE BOX BEFORE
PROCEEDING.
OPERATOR MUST BE PROPERLY GROUNDED AND
CONNECTED IN ACCORDANCE WITH LOCAL
ELECTRICAL CODES. THE OPERATOR SHOULD BE
ON A SEPARATE FUSED LINE OF ADEQUATE
CAPACITY.
ALL ELECTRICAL CONNECTIONS MUST BE MADE
BY A QUALIFIED INDIVIDUAL.
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.
FIGURE 7
Refer to Master Wiring Diagram. Make connection
through holes labeled for power and control. Do
not run control wires in the same conduit as
power wires.
INSTALL CONTROL STATION
Install the optional Reversing Edge before
proceeding with the Control Station Installation.

6
ADJUST LIMITS
MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE
PROCEEDING WITH ADJUSTMENTS.
1. Depress open limit switch. The operator should stop.
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. Be sure close limit actuator is engaged as door fully seats at the floor.
If other problems persist, call our toll-free number for assistance - 1-800-528-6563.
CLOSEOPEN
Travel Nut
Retainer Open Limit
Nut
Close Limit
Nut
Close Limit
Switch
Open Limit
Switch
CLS OLS
ADLSSLS
Actuator Actuator
Press Travel Nut Retainer Down
Toward Fram TO DISENGAGE.
TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER BEFORE MANUALLY MOVING LIMIT NUTS.
WARNING

Remove clutch cover and adjust clutch so that it is
tight enough to open and close the door but will slip
when the door meets an obstruction. Either loosen or
tighten the clutch nut with 1/4 turn increments. After
adjustment is completed, tighten locking set screw
and re-install clutch cover. Reconnect power to
operator and test for proper operation. The clutch will
require periodic inspection and adjustment.
7
Motor
Clutch
Adjusting
Nut
CONNECT REVERSING EDGE DEVICE (OPTIONAL)
The operator has been pre-wired to accept
connection of a reversing edge device. Connect the
normally open contacts to terminals T6 and T8 on the
low voltage terminal block. A cut-off switch will de-
activate the safety device during the last few inches
of the door's downward travel.
✳Use SAE 30 Oil (Never use grease or silicone spray).
✳✳ Use Mobil SHC75W90 all climate synthetic oil.
✔Repeat ALL procedures.
■ Do not lubricate motor. Motor bearings are rated for continuous operation
■Do not lubricate clutch.
■Inspect and service whenever a malfunction is observed or suspected.
■CAUTION: BEFORE SERVICING, ALWAYS DISCONNECT OPERATOR FROM POWER SUPPLY.
ADJUST CLUTCH (OPTIONAL)
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 ●✔
Clutch (Optional) Check & adjust as required ●✔
Gear Reducer** Check for leaks and replace
seals as needed ●✔
Fasteners Check & tighten as required ●✔
Manual Disconnect Check & Operate ●✔
Bearings & Shafts Check for wear & lubricate ●✔
MAINTENANCE SCHEDULE
Check at the intervals listed in the following chart.
WARNING
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 PERSONAL INJURY OR
DEATH TO PERSONS TRAPPED BENEATH THE DOOR.
WARNING
TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER TO OPERATOR BEFORE ADJUSTING SLIP
CLUTCH.
CAUTION: The torque limiter clutch is NOT an
automatic reversing device. An electric or
pneumatic reversing edge can be added to bottom
edge of door if desired.

Brake
Shoe
1-1/4"
(+ or - 1/32")
Cone
Shaped Stud
Set
Screw "A" Tighten Screw
to Adjust
Spring Compression
Spring
8
ADJUST THE BRAKE
Refer to illustration below. Tighten the screw until the spring compresses to the 1-1/4" dimension. Adjust screw
"A" until cone shaped stud just touches the two brake shoes as shown.
CAUTION: Do NOT over-adjust screw "A". If the cone shaped stud spreads the shoes, the brake will not
function correctly.
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 - 1-800-528-6563
HOURS 7:00 TO 3:30 p.m. (Mountain Std. Time)
MONDAY Through SATURDAY
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

9
MEMO:

10
OPEN
LIMIT
SWITCH
AUXILARY
DEVICE LIMIT
SWITCH
CLOSE
LIMIT
SWITCH
SENSING
LIMIT
SWITCH
NC
NO
NC
NO
NC
NO
NC
NO
1234567891011121314 1234567891011121314
C
C
C
C
Blue
P2 P1
P3
1
2

4
L2
L1 L3 OVERLOAD
PROTECTOR
LOAD
LINE
LINE
LOAD
Red
The Chamberlain Group, Inc.
Wiring Diagram Standard Duty 1Ø
(Reference Label 132B2041B)
4/28/91 - 6/1/91 - 6/11/91 - 6/15/91
6/27/91 - 7/1/91 - 7/12/91 - 7/22/91
7/23/91 - 8/11/91 - 8/13/91 - 9/3/91
9/11/91 - 10/9/92
Brown
Red
Gray
Blue
Red
Yellow
Gray
Blue Orange
Brown Brown
Brown
Blue
Org. Org.
Blue
Brown Brown
Blue
Gray
Yellow
Red
Orange
Org.
Blue
Yellow
Blue
Blue
Blue
Orange
Blue
Red
Brown Blue
Brown
RedRed
Red Red
Red
Red
Red
Red
Red
Yellow
Black
Black
Red
Yellow
T12 T11 T10 T9 T8 T7 T6 T5 T4 T3 T2 T1
123
Brown
Gry./Wht.
Yellow
Red
Yellow
Black
Orange
Blue
Orange
Orange
White
Blue
Red Red
White
Orange
Orange
Orange
Black
Hot 115V 1Ø
Hot 230V 1Ø
Neutral 115V 1Ø
Hot 230V 1Ø
Open
Stop
TI TL SIR
SW4 SW3 SW2 SW1
Open/Close
Sensing Device
Open/Timer Close
Black
Red
BRAKE
(IF
REQUIRED)
OPEN CLOSE
A2
13 L3
T2 T1
NO NO NO NO NO NO NO NO
14 T3 T2 T1
A2
NO NO NONONO NO NONO
A2 A1
L2 L1 13 L3
A2 A1
L2 L1
14 T3
Red
Remove Jumper to Install
Timer Defeat Switch.
TRANSFORMER
230V
Only
115V
Only
SW5
Delay to
Open Timer
(Optional)
RADIO CONTROL
MOTOR
GND
Org.
Orange
Org.
14D0379
SINGLE PHASE WIRING DIAGRAM
(For PC Board #14D0379)
Close
10
Interlock
(When Used)
HJ SINGLE PHASE WIRING DIAGRAM
(For P.C. Board #14D0379)