Chamberlain GH User manual

OWNER'S MANUAL
GH
SOLID STATE
INDUSTRIAL DUTY DOOR OPERATOR
LOGIC CONTROL
L
C2 Wiring
FACTORY SET
See pages 13 & 14
for other wiring
configurations
NOT FOR RESIDENTIAL USE
LISTED DOOR OPERATOR
41B6
Serial #
(located on electrical box cover)
Installation Date
Wiring Type
2 YEAR WARRANTY

2
SPECIFICATIONS
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 actuated disc
brake
HOIST WHEEL:.....................Standard mounting on
left or right side
SAFETY
DISCONNECT:.............Floor level chain hoist with elect-
rical interlock for emergency manual door operation
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.
MOTOR
TYPE: .................................Continuous duty
HORSEPOWER: ................1/2, 3/4, 1, 1-1/2 Hp
Single or Three phase
2 HP Three phase
SPEED:...............................1725 RPM
VOLTAGE: .........................115-230 Single phase
230 Three phase
CURRENT: .........................See motor nameplate
ELECTRICAL
CURRENT VOLTAGE:.....5V dc
AUXILIARY VOLTAGE:...24V dc
CONTROL STATION: .....NEMA 1 three button station.
OPEN/CLOSE/STOP
WIRING TYPE:.................C2 (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.
14.00”
WEIGHTS AND DIMENSIONS
HANGING WEIGHT:.........80-110 LBS.
Hand Chain Wheel
See
Note #1
See
Note #2
A
X
B
Y
C
D
Y
See
Note #3
A
11-1/2
12-1/2
12-3/4
12-3/4
11
11
12
12-1/2
12-3/4
13-1/4
B
25-3/4
26-3/4
27
27
25-1/4
25-1/4
26-1/4
26-3/4
27
28-5/8
C
12-63/64
12-63/64
12-63/64
13-63/64
12-63/64
12-63/64
12-63/64
13-63/64
13-63/64
15-15/64
D
3
3
3
3-1/2
3
3
3
3-1/2
3-1/2
3
1/2
3/4
1
1-1/2
1/2
3/4
1
1-1/2
2
3
1
1
1
1
3
3
3
3
3
3
HP DIMENSIONS
NOTES:
1) Output Shaft with 1” x 1/4” Key for 1/2 thru 2Hp operators, 1-1/4” x 1/4” Key for 3Hp operators.
2) MT’G CENTERS: X = 4-3/4”; Y = 5-1/2” for 1/2 thru 2Hp operators
X = 7-17/32”; Y = 9-1/16” for 3Hp operators
3) Hand Chain Wheel extends 1-5/8” beyond operator in vertical mounting position as shown.
PHASE

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.
3
2-1/4"
FIGURE 1
Shaft Support Bracket
with Bearing (Not Supplied)
Door Sprocket
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.
CAUTIONCAUTION 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. Retain
5-1/2” between frames. See Figure 1.
OPERATOR PREPARATION
IMPORTANT SAFETY NOTES
5-1/2”
CAUTION
CONNECT REVERSING EDGE
SWITCH - SEE INSTALLATION
INSTRUCTIONS
FOR INDOOR USE ONLY
INSTALL MORE THAN 8 FT. ABOVE DOOR
LOCATE CONTROL STATION SO THAT DOOR IS WITHIN
SITE OF PERSON OPERATING THE CONTROL. DOOR
MUST BE CONTROLLED BY 3 BUTTON STATION
Cotterpin
Disconnect Lever
Cutout for Rollpin
(typical both sides)
Hand
Chain Wheel
Chain Guide
The GH operator may be mounted on either the right (standard) or left side of door, and in either a vertical
(standard) or horizontal mounting position. Refer to the steps below if you require the hand chain and/or
disconnect chain to be on the opposite side of the operator; Or if the operator is being mounted in a horizontal
position.
Hand Chain Right/Left Conversion
Remove the two snap rings (1 pc. outer, 1 pc inner)
on hand chain shaft assembly. Position roll-pin to fit
through cutout in frame and slide complete shaft
assembly through housing and bevel gear. Insert
shaft assembly on opposite side of housing, and
replace bevel gear, bearing, hardware, and snap rings
on the opposite side of shaft in the same manner.
Disconnect Lever Right/Left Conversion
Remove cotter pins on the ends of the disconnect
shaft (square shaft), move the disconnect lever arm to
the opposite side, and replace the cotter pins. Be
sure to keep two(2) 12ga. washers on the side without
the lever arm.
Horizontal Mounting Conversion
Remove cotter pins on the ends of the disconnect
shaft (square shaft), and remove lever. Replace lever
using square hole on opposite end of lever.
Reposition sash chain to opposite end of lever also.
Replace cotter pins.
FIGURE 2

4
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. Place drive sprocket on the appropriate side of
the operator. Do not insert the key at this time.
3. Wrap drive chain around door sprocket and join
roller chain ends together with master link.
4. Raise operator to approximate mounting position
and position chain over operator sprocket.
5. 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.
6. 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 Right Hand
Wall Mounted Operator
Optimum Distance
12 - 15”
Optimum Distance
12 - 15”
OPTIONAL
Mounting Bracket
P/N 08-9098
Be sure door
sprocket is properly
aligned with drive
before securing to
the shaft.
Chain Keeper
FIGURE 5

These operators are equipped with a manual hoist.
An electrical interlock will disable the electrical
controls when the hoist is used.
To operate the hoist:
1. Pull the disconnect chain (small chain) to engage
the hoist mechanism. The disconnect chain may be
locked in position by slipping the end through the
keyhole of the chain keeper mounted on the wall.
2. Operate the door in the desired direction by pulling
on one side or the other of the continuous loop hoist
chain (large chain).
3. The disconnect chain must be released from the
chain keeper before the door will operate again
electrically.
5
7. Install Hand Chain
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
EMERGENCY MANUAL OPERATION
This operator has provisions for manually operating the door in case of emergency or power failure. Refer to the
appropriate instructions below for your model operator.
Model GH
Chain Keeper
(with pad locking provisions)
8. 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.
Electrical Interlock with Hoist for Models H and HJ
TURN OFF POWER TO THE OPERATOR BEFORE
MANUALLY OPERATING YOUR DOOR.
CAUTIONCAUTION
BRAKE ADJUSTMENT
The brake is adjusted at the factory and should not need additional adjustment for the the life of the friction pad.
Replace friction pads when necessary. Refer to the illustration for identification of components for the solenoid
type brake system.
Friction Pads
Release Lever
Plate Assembly
Solenoid
Solenoid Brake System
ACTUATOR PLATE

6
TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER BEFORE MANUALLY MOVING LIMIT NUTS.
WARNING
LIMIT SWITCH ADJUSTMENT
MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE
PROCEEDING WITH ADJUSTMENTS.
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.
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:
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.
ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
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.
If other problems persist, call our toll-free number for
assistance - 1-800-528-2806.
Retaining Plate
CLOSE Limit Switch
SAFETY
(Aux. Close) Limit Switch
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 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.
Actuator

7
WARNING
TO PREVENT ENTRAPMENT
DO NOT START DOOR DOWNWARD
UNLESS DOORWAY IS CLEAR
OPEN
CLOSE
STOP
Control Station
WARNING Notice
Push
Buttons
WARNING
DISCONNECT POWER AT THE FUSE BOX BEFORE
PROCEEDING.
OPERATOR MUST BE PROPERLY GROUNDED AND
CONNECTED IN ACCORDANCE WITH LOCAL
ELECTRICAL CODES. NOTE: THE OPERATOR
SHOULD BE ON A SEPARATE FUSED LINE OF
ADEQUATE CAPACITY.
ALL ELECTRICAL CONNECTIONS MUST BE MADE
BY A QUALIFIED INDIVIDUAL.
WARNING
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.
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 INJURY OR DEATH TO
PERSONS TRAPPED BENEATH THE DOOR.
1. 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 BUTTON
STATION.
2. Apply power to the operator. Press OPEN push
button and observe direction of door travel and
then Press the STOP button.
If door did not move 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 (1-800-528-2806).
CABLE CONNECTION NOTE:
Be sure to use the control box opening with the
7/8” dia. hole for CONTROL cable(s). All power wires
use the 1-1/16” dia. hole.
Refer to Control Connection Diagrams on pages
11 & 14. Make connection through hole labeled for
control. Do not run control wires in the same
conduit as power wires.
Before installing control station be sure to follow all warnings described below. Failure to do so may
result in severe injury to persons and/or damage to operator. Do not install any wiring or attempt to run
the operator without consulting the wiring diagram. Install the optional Reversing Edge before proceeding
with the Control Station installation.
IMPORTANT: Mount WARNING NOTICE beside or
below the push button station.
IMPORTANT SAFETY NOTES CONTROL STATION WIRING
MOUNT WARNING NOTICE
INSTALL POWER WIRING & CONTROL STATION
1-1/16” dia. Power
Wiring Access Hole
7/8” dia. Control
Wiring Access Hole
(Opposite Side)

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
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
MAINTENANCE SCHEDULE
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 ●●✔✔

9
NEMA MOTOR WIRING DIAGRAMS
SINGLE VOLTA G E
1/3 & 1/2HP 115V ONLY
1 PHASE
3 PHASE
Motor
Purple
Grey
Blue
Yellow
Cable
T1-Blue
T4-Yellow
T5-Black
T8-Red
Motor
Grey
Blue
Purple
Yellow
Cable
T2-White
T4-Yellow
T5-Black
T8-Red
T3-Orange
T1-Blue
115V
115V
Motor
Blue
Purple
Yellow
Cable
T4-Yellow
T5-Black
T1-Blue
208-230V
T3
Orange
T2
White
T8
Red
Grey
(Not Used)
Motor
Grey
Brown
Brown
Purple
Yellow
Cable
T1
T2
T6
208-230V
T4
T5
T7
T3
T9
T8
Motor
Grey
Brown
Brown
Purple
Yellow
Cable
T1
T2
T6
208-230V
T4
T5
T7
T3
T9
T8
P1
P2
1/3, 1/2 & 3/4 Horsepower 1 Horsepower and above
115V BRAKE SOLENOID
(WHEN REQUIRED)
BLACK/BLUE
BLACK/BLUE
230V BRAKE SOLENOID
(WHEN REQUIRED)
BLACK/BLUE
BLACK/BLUE
230V BRAKE SOLENOID
(WHEN REQUIRED)
BLACK/BLUE
BLACK/BLUE
230V BRAKE SOLENOID
(WHEN REQUIRED)
BLACK/BLUE
BLACK/BLUE

10
C2
D1
E2
T
TS
B2
123
OFF
4
123
OFF
4
123
OFF
4
123
OFF
4
123
OFF
4
123
OFF
4
TYPE STATION
B2 3 Button, 1 Button, 1 & 3 Button Radio Control
Function: Momentary contact to open, close and stop, plus wiring for
sensing device to reverse and auxiliary devices to open and close
with open override.
C2 3 Button, 3 Button Radio Control
Function: Momentary contact to open and stop with constant pressure
to close, open override plus wiring for sensing device to reverse.
D1 2 Button, 3 Button Radio Control
Function: Constant pressure to open and close with wiring for sensing
device to stop.
E2 2 Button, 3 Button Radio Control
Function: Momentary contact to open with override and constant
pressure to close. Release of close button will cause door to reverse
(roll-back feature) plus wiring for sensing device to reverse.
T* 3 Button, 1 Button, 1 & 3 Button Radio Control
Function: Momentary contact to open, close, and stop, with open
override and timer to close. Every device that causes door to open,
except a reversing device, activates timer to close. Auxiliary controls
can be connected to open input to activate the timer to close. If the
timer has been activated, the open button and radio control can
recycle the timer. The stop button will deactivate the timer until the
close button is used to close the door. (NOTE: Requires P/N 1A4811
CPSII Option Board with Timer to Close Function.)
TS* 3 Button, 1 Button, 1 & 3 Button Radio Control
Function: Momentary contact to open, close, and stop with open
override and timer to close. Every device that causes door to open,
including a reversing device, activates timer to close. Auxiliary
controls can be connected to open input to activate the timer to close.
If the timer has been activated, the open button and radio control can
recycle the timer. The stop button will deactivate the timer until the
close button is used to close the door. (NOTE: Requires P/N 1A4811
CPSII Option Board with Timer to Close Function.)
NOTE:
1. External interlocks may be used with all functional modes.
2. Auxiliary devices are any devices that have only one set of
contacts. Examples are: photocell, loop detector, pneumatic or
electrical treadles, residential radio controls, one button stations,
pull cords, etc.
3. Open override means that the door may be reversed while closing
by activating an opening device without the need to use the stop
button first.
OPERATING MODE

STANDARD POWER & CONTROL CONNECTION DIAGRAM
12 345678 910
L3
L2 H
L1 N
TB1-
123
Open
Open / Close
Remove Jumper
to Install Interlock
RADIO CONTROL
(24V dc only)
Stop
Sensing Device
Hot 115V, 208-230V, 1Ø
Neutral 115V, 208-230V, 1Ø
Close GND
12 345678 910
L3
L2 H
L1 N
TB1-
123
Open
Open / Close
RADIO CONTROL
(24V dc only)
Stop
Sensing Device
208-230V, 3Ø
208-230V, 3Ø
208-230V, 3Ø
Close GND
11
STANDARD POWER & CONTROL CONNECTION DIAGRAM
Solid State Board CDO - 115V, 208-230V, 1Ph
Solid State Board CDO - 208-230V3Ph

12

13

Set / Reset Maximum Run Timer
Begin with door in closed position. Set dip switch to max. run timer
mode. Press control station open button to operate door from closed to
full open position without stopping. Set dip switch to desired operating
mode (B2, C2, D1, E2, T, TS).
Adjustable Mid Stop
Set: Begin with door in closed position. Set dip switch to adj. mid stop
mode. Press control station open button to operate door from closed to
mid stop position and stop with control station stop button. Set dip switch
to desired operating mode (B2, C2, D1, E2, T, TS).
Clear: Begin with door in closed positon. Set operator in set mid stop
mode. Press control station open button. Allow the door to run to the
open limit. Set the dip switch to desired operating mode (B2, C2, D1,
E2, T, TS).
Set Timer to Close (NOTE: Requires P/N 1A4811 CPSII
Option Board with Timer to Close Function.)
Set dip switch to timer to close mode. Momentarily press control station
open button to set timer duration in 5 second increments. (Red
diagnostic L.E.D. will flash to indicate the entry of each 5 second
increment into memory). To re-set timer memory to zero, press control
station close button. Set dip switch to (T or TS) operating mode after
timer is programmed.
Diagnostic Mode
Set dip switch to diagnostic mode. Flashing red diagnostic L.E.D.
indicates proper microprocessor function. If the diagnostic L.E.D. does
not light, the control logic board requires replacement.
Set
max.
run
timer
123
OFF
4
OPTIONAL CONTROL SETTINGS
14
Set
adj.
mid
stop
123
OFF
4
Set
timer
to close
123
OFF
4
Diagnostic
mode
123
OFF
4

6
TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER BEFORE MANUALLY MOVING LIMIT NUTS.
WARNING
LIMIT SWITCH ADJUSTMENT
MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE
PROCEEDING WITH ADJUSTMENTS.
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.
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:
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.
ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
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.
If other problems persist, call our toll-free number for
assistance - 1-800-528-2806.
Retaining Plate
CLOSE Limit Switch
SAFETY
(Aux. Close) Limit Switch
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 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.
Actuator

16
REPAIR PARTS LIST – ELECTRICAL BOX
SOLID STATE
Qty
1
2
3
6
6
2
3
2
6
Item
S1
S2
S3
S4
S5
S6
S7
S8
S9
P/N
10-10013
18-10036
23-10041
31-10043
82-PX04-19
82-PX06-16
84-DT-04
84-LH-06
85-IG-04
Descrition
Depress Plate
Spring, Depress Plate
Limit Switch
Standoff, Limit Switch
Screw, #4-40 x 1-3/8” Pan Head Ph
Screw, #6-32 x 1” Pan Hd Phil
Nut, Double Tinnerman
Locknut, #6-32 Nylon Hex
Lockwasher, #4 Internal Tooth
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.
K72-12510 LIMIT SHAFT ASSEMBLY KIT
Item
L1
L2
L3
L4
L5
L6
L7
L8
Description
Limit Shaft, Standard T
Flange Bearing, 3/8” I.D.
Limit Nut
Sprocket 48B9 x 3/8” Bore
Washer, Shim 3/8” I.D. x .050 THK.
Washer, Shim 3/8” I.D. x .010 THK.
Roll Pin, 1/8 DIA. x 1” Long
E Ring, 3/8”
Qty
1
2
2
1
1
4
1
1
K75-12514 LIMIT SWITCH ASSEMBLY KIT
P/N
11-10021
12-10028
13-10024
15-48B9A
80-10025
80-10026
86-RP04-100
87-E-038
* COMPLETE ELECTRICAL BOX KITS
Item
1
2
3
4
5
6
7
8
9
10
Descrition
Electrical Box (No Tabs)
Electrical Box Cover
Tranformer, 115/230V
SPDT Interlock Switch
(See Varaible Components)
(See Varaible Components)
Heatsink, PCB
PCB Assembly
Terminal Block, Radio
Standoff, PCB
Qty
1
1
1
1
1
1
1
1
1
7
P/N
10-10444M1
10-10115X
21-10038
23-10916
25-2xxx
25-4xxx
29-10037
29-10042
42-10040
80-10027
* Electrical Box Kits include parts from K72-12510 and K75-12514
ITEM
5
6
VARIABLE COMPONENTS
PART NO.
25-2006
25-2008
25-2010
25-2015
25-4004-K
25-4008-K
DESCRIPTION
Overload, 6 Amp
Overload, 8 Amp
Overload, 10 Amp
Overload, 15 Amp
Overload, 2.5-4.0 Amp
Overload, 5.5-8.0 Amp
GH5011L
GH5021L GH5023L GH7511L GH7521L GH7523L GH1011L GH1021L GH1023L GH1521L GH1523L GH2023L
Complete Electrical Box Replacement Kits
To order a complete electrical box replacement kit, add a K- prefix
to the model number of your operator. For example:
GH5011L = K-GH5011L
(Operator) (Electrical Box Replacement Kit)
Electrical Box Sub-Assemblies
K72-12510 Limit Shaft Assembly
K75-12514 Limit Switch Assembly
Motor Kits
K20-1050C2 Models GH5011L, GH5021L
K20-3050C4 Models GH5023L
K20-1075C2 Models GH7511L, GH7521L
K20-3075C4 Models GH7523L
K20-1100C2 Model GH1011L, GH1021L
K20-3100C4 Models GH1023L
K20-1150C2 Models GH1521L
K20-3150C4 Models GH1523L
K20-3200C4 Models GH2023L
Shaft Assemblies
K72-12789 Hand Chain Shaft Service Kit
K72-13379 Hand Chain Shaft Service Kit (3HP Models)
Disconnect Assembly Kits
K75-12783 Disconnect Assy Service Kit
Brake Kits
K75-12584 115 Volt Models
K75-12585 230-460 Volt Models
K75-12586 575 Volt Models
Complete Gear Reducer Housing Kits
See Page 18 for more information
Brake Solenoid Plate Assembly Kits
K75-11034 115V Models
K75-11035 230-460V Models
K75-11036 575V Models

17
ELECTRICAL BOX - ILLUSTRATED PARTS
2
1
4
L4
L6
L2
6
L7
L3
L1
9
310
7
8
S8
S2
S6
S1
S4
S3
S9
S5
S7
L6
L2
L8
L5
5

18
REPAIR PARTS LISTS – MODEL GH
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 remove 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.
SOLID STATE
K75-12783 DISCONNECT ASSEMBLY KIT
ITEM PART # DESCRIPTION QTY
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
D16
GH Disconnect Lever
Bevel Gear Yoke
Brake Release
Actuator Bracket
Switch Actuator
Disconnect Shaft
GH Tension Spring
12ft. Of Sash Chain
Screw, #8-32 x 1/4” Self Tap
Screw, #10-32 x 7/8” Long
Screw, #10-32 x 1/2” Serrated Fl.
Nut, #10-32 Serrated Flange
USS Flatwasher, 3/4”
#10 Lockwasher ZP
Cotter Pin, 1/8” x 1-3/4” Long
Roll Pin, 3/16” x 3” Black Oxide
1
1
1
1
1
1
1
1
1
2
2
2
3
2
3
1
BRAKE ASSEMBLY KITS
ITEM PART # DESCRIPTION QTY
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
Brake Hub
Brake Release Lever
Brake Disk
Spring Cup for Brake Assembly
Brake Stud
Spring, Compression x .87”
Spacer, .20” x .31” Long
Brake Pressure Plate Assembly
Brake Solenoid Assembly (115V)
Brake Solenoid Assembly (230V)
Brake Solenoid Assembly (575V)
Feather Key
Push on Fastener, 5/8” Int. Star
1
1
1
4
4
4
2
1
1
1
1
1
1
07-10179
10-10190
10-10191
11-10192
11-10193
18-10194
31-10186
75-10184
75-11034
75-11035
75-11036
80-9001
87-P-062
10-11021
10-11023
10-11024
10-11029
10-11030
11-11106
18-11007
19-8A-12
82-PX08-04T
82-SH10-14
82-WX10-08T
84-FN-10
85-FW-50
85-LS-10
86-CP04-112
86-RP06-300
K72-12789 OR K72-13379
HAND CHAIN SHAFT KIT
ITEM PART # DESCRIPTION QTY
H1
H2
H3
H4
H5
H6
H7
H8
H9
H10
H11
H12
H13
H14
H15
Bevel Gear, 5/8” ID
Bevel Gear Assy, 3/4” ID (3HP)
Bevel Gear, 3/4” ID
Bevel Gear, 3/4” ID 24 Tooth (3HP)
Hand Chain Guide
Hand Chain Shaft, GH
Bearing, 3/4” I.D.
Nyliner Bearing
Compression Spring, GH
Chain Wheel Assembly
Shim Washer, Thick
Washer, .656 I.D. x 1.25 O.D.
Roll Pin, 1/4” x 1-1/2” Long
Roll Pin, 5/16” x 1-5/8” Long
Roll Pin, 5/16” x 2-1/2” Long
E Ring, 5/8”
E Ring, 3/4”
1
1
1
1
1
1
2
1
1
1
4
1
1
1
1
1
4
08-11012
75-13334
08-11013
08-13333
10-10882
11-11105
12-10029
12-10883
18-11008
75-10884
80-10022
80-11014
86-RP08-108
86-RP10-110
86-RP10-208
87-E-062
87-E-075
INDIVIDUAL PARTS
ITEM PART # DESCRIPTION QTY
1
2
3
4
5
6
Elec. Box Mounting Bracket
Sprocket, 48B18 LGE
Sprocket, 48B18 QGH (3HP Models)
Sprocket, 50B12 LGH
Sprocket, 80B9 QGH (3HP Models)
Electrical Box
Motor
Gear Reducer
1
1
1
1
1
1
1
1
10-11045
15-48B18LGE
15-48B18QGH
15-50B12LGH
15-80B9QGH
See Page 16
See Page 16
See Var. Comp.
VARIABLE COMPONENTS
ITEM PART # DESCRIPTION QTY
B9
6
Brake Solenoid Assy (115V Opers)
Brake Solenoid Assy (230-460V Opers)
Brake Solenoid Assy (575V Opers)
Gear Reducer (1 HP Opers, 45:1)
Gear Reducer (1.5-2 HP Opers, 45:1)
Gear Reducer (3 HP Opers, 45:1)
1
1
1
1
1
1
75-11034
75-11035
75-11036
32-11009
32-11010
32-11011
COMPLETE GEAR REDUCER HOUSING KITS
ITEM PART # DESCRIPTION QTY
G1
G2
G3
Housing Support Bracket
Gear Brake Housing
Gear Brake Housing (3HP Models)
Housing Cover
2
1
1
1
10-11006
10-11026M1
10-12453M1
10-11046M1
* Gear Housing Kits also include:
K75-12788 Disconnect Assembly Kit
K72-12789 Hand Chain Shaft Kit
K72-13379 Hand Chain Shaft Kit (3HP Models)
K75-12584 Brake Assembly Kit (115V Models)
K75-12585 Brake Assembly Kit (230-460V Models)
K75-12586 Brake Assembly Kit (575V Models)
* Brake Kit Voltage same as Operator Voltage.
Up to 1HP, 115 Volts
Up to 1HP, 230-460 Volts
Up to 1HP, 575 Volts
1.5 to 2HP, 230-460 Volts
1.5 to 2HP, 575 Volts
3HP, 230-460 Volts
K75-12829
K75-12830
K75-12831
K75-12832
K75-12833
K75-12834
KIT REQUIRED FOR OPERATOR(S)
115 Volt Models
230-460 Volt Models
575 Volt Models
K75-12584
K75-12585
K75-12586
KIT REQUIRED FOR OPERATOR(S)

19
ILLUSTRATED PARTS
5
4
D4 D11
D12
D9
D5
1
6
2
H9
H15
H5
B9
H4
H12
H13
G1
G3
B2
H15
D13
G2
3
H2
D3
D15
D16
D13
D6
D7
D15
D8
D1
D2
D10
D14
D15
H15
H9
H6
H3
H8
H15
H9
H5
B7
B1 B4
B6
B5
H11
H7
H14
H10
H1
B11
B8
B3
B10

c1997, The Chamberlain Group, Inc.
All rights Reserved
OPEN / CLOSE
3 BUTTON STATION OR 3 POSITION KEYSWITCH WITH SPRING RETURN TO CENTER AND STOP BUTTON
2 OR MORE KEY LOCKOUT
4110
7 6 4 5
Stop
Close
Open
Stop
Close
Open
7 6 4 5
Stop
Close
Open
2 BUTTON STATION OR 3 POSITION KEYSWITCH WITH SPRING RETURN TO CENTER
STANDARD
7 6 4
Close
Open
D1 & E2
MODE ONLY
2 OR MORE
7 6 4
Close
Open
Close
Open
D1 & E2
MODE ONLY
OPEN / CLOSE
14B2, T & TS
MODE ONLY
RADIO CONTROL
(24VDC ONLY)
1 BUTTON STATION OR ANY AUXILIARY DEVICE RESIDENTIAL RADIO CONTROLS
SENSING DEVICE TO REVERSE OR STOP EXTERNAL INTERLOCK
482323
Remove Jumper
When Interlock is Used
ONE 2 OR MORE
STANDARD
7 6 4 5
Stop
Close
Open
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 4 and 5.
All Wiring Types
Keyswitch
Sensing Device
LISTED DOOR OPERATOR
41B6
CONTROL CONNECTION DIAGRAM
01-11001C