Chamberlain H User manual

OWNER'S MANUAL
MODELS:
J H HJ
INDUSTRIAL DUTY DOOR OPERATOR
Serial #
(located on electrical box cover)
Installation Date
Wiring Type
2 YEAR WARRANTY
C2 Wiring
FACTORY SET
See page 8
for other wiring
configurations
Cube Style
Electrical Box
NEW!
NOT FOR RESIDENTIAL USE
LISTED DOOR OPERATOR
41B6

2
MOTOR
TYPE: .................................Continuous duty
HORSEPOWER: ................1/3, 1/2, 3/4 & 1 Hp
Single or Three phase
SPEED:...............................1725 RPM
VOLTAGE: ..........................115, 220, 230 Single
phase
208, 230, 460, 575 Three
phase
CURRENT:..........................See motor nameplate
MECHANICAL
DRIVE REDUCTION: ..Primary: Heavy duty (5L) V-Belt.
Secondary: #48 chain/sprocket Output: #50 chain
OUTPUT SHAFT SPEED:.....36 R.P.M.
DOOR SPEED: ......................6 - 7” per sec.
depending on door
BRAKE: (Optional) ...............Solenoid actuated disc
brake
BEARINGS: ...........................Output Shaft: Shielded
Ball Bearing. Clutch Shaft: IronCopper sintered and
oil impregnated.
HAND CHAIN WHEEL: .........Left or right handing
Models H and HJ only.
SAFETY
DISCONNECT :
Model J: Floor level disconnect for emergency manual
door operation.
Model H: Floor level chain hoist with electrical interlock
for emergency manual door operation.
Model HJ: Includes both floor level disconnect
systems stated above.
REVERSING EDGE:......(Optional) Electric or pneumatic
sensing device attached to the bottom edge of door.
A REVERSING EDGE IS STRONGLY RECOMMEND-
ED FOR
ALL COMMERCIAL OPERATOR INSTALLA-
TIONS.
REQUIRED WHEN THE 3 BUTTON CON-
TROL STATION IS OUT OF SIGHT OF DOOR OR
ANY OTHER CONTROL (AUTOMATIC OR MANUAL)
IS USED.
SPECIFICATIONS
ELECTRICAL
TRANSFORMER:.............24VAC
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. 8)
LIMIT ADJUST: ................Linear driven, fully
adjustable screw type cams. Adjustable to 30 feet.
17.63”
7.56”
5.50”
6.59”
13.75”
1.50”
4.56”
4.41”
4.63”
14.60”
16.50”
14.44”
7.27”
8.33” 7.31”
A
A
A
A
B
B
B
B
MOUNTING DIMENSIONS
A - Wall Mounting
B - Bracket Mounting (rolling door)
WEIGHTS AND DIMENSIONS
HANGING WEIGHT: .........80-110 LBS.
Hand Chain Wheel
present with Models
H and HJ only.
7.17”
2.00”
3/8” BOLT

3
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 pro-
vide 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.
Both J and H series operators have dual output shafts and may be mounted on either the right (standard) or left
side of door, and in either a vertical (standard) or horizontal mounting position. If you need to move the drive
sprocket, loosen BOTH set screws, remove the sprocket and key, and place on the opposite side of the drive shaft.
Be sure to tighten BOTH set screws securely
OPERATOR PREPARATION
Hand Chain Handing
For models H and HJ with manual hoist hand chain systems, the handing of the operator must be determined at
the time of order. The handing is indicated by last letter of the model name (R or L).
The hand chain wheel can not
be switched on site.
If your installation causes the hand chain to hang in the door opening, hook the chain off to the
side near the top of the door jamb.
IMPORTANT SAFETY NOTES
5-1/2”
Output Shaft Key
Drive Sprocket
(2) Set Screws

4
1a. Wall Mounting
The operator should generally be installed below
the door shaft, and as close to the door as possi-
ble. 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 pro-
vide 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 par-
allel 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 4FIGURE 3
Before your operator is installed, be sure the door has been properly aligned and is working smoothly. The oper-
ator 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.
FIGURE 5
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 proper-
ly aligned with
drive before secur-
ing to the shaft.
Chain Keeper

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 key-
hole 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 elec-
trically.
5
7. Install Hand Chain (Models H and HJ only)
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 H
Model J
This operator has a floor level disconnect chain to dis-
connect the door from the door operator.
1. To disengage, pull the chain and secure in the dis-
engaged position by slipping the end through the key-
hole bracket mounted on the wall. Or if emergency
egress device is used, pull handle to disengage oper-
ator from door.
2. The door may now be pushed up or pulled down
manually. Release the disconnect chain to operate the
door again electrically.
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 nec-
essary.
Model HJ
This operator includes both a floor level disconnect
chain to disconnect the door from the door operator
and and a disconnect chain with manual hoist to elec-
trically disable the operator controls.
1.
Refer to Model H instructions for hoist operation.
2. Refer to Model J instructions for manual operation.
Manual Disconnect for Models J and HJ
Electrical Interlock with Hoist for Models H and HJ
TURN OFF POWER TO THE OPERATOR BEFORE
MANUALLY OPERATING YOUR DOOR.
WARNING
CAUTION
CAUTION
WARNING
WARNING
Chain Keeper
(with pad locking provisions)
Keyhole Bracket

6
CLOSE Limit Switch
SAFETY
(Aux. Close) Limit Switch
OPEN Limit Switch
Retaining Plate
AUXILIARY OPEN
Limit Switch
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
PROCEEDING WITH ADJUSTMENTS.
If other problems persist, call our toll-free number for
assistance - 1-800-528-2806.
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 actu-
ator. 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
SENSING EDGES & PHOTO EYES
Sensing devices supplied for door industry type operators
with an isolated normally open (N.O.) output are compati-
ble with your operator. This includes pneumatic and elec-
tric edges, and through beam and retro reflective photo
eyes. If your door does not have a bottom sensing edge or
safety photo eyes and you wish to add a safety device to
your application, please contact your local LiftMaster
Authorized Dealer.
If not pre-installed by the door manufacturer, mount the
sensing edge on the door according to the instructions pro-
vided with the edge. The sensing edge may be electrical-
ly 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 oper-
ator electrical box in accordance with local codes.
ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)
WIRING:
For wiring of your sensing device to the operator,
refer to the wiring diagram supplied with your opera-
tor. See field connection terminals identified as
Sensing Device or Safety Edge.
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.
IT IS STRONGLY RECOMMENDED THAT A
SAFETY PHOTO EYE OR SENSING EDGE BE
USED IN CONJUNCTION WITH THE OPERATOR.
NOTICE

7
Three (3)7/8” & 1-1/6”dia. knockouts for Power & Control
Wiring access (Near & Opposite side)
WARNING
CAUTION
WARNING
WARNING
DISCONNECT POWER AT THE FUSE BOX BEFORE
PROCEEDING.
OPERATOR MUST BE PROPERLY GROUNDED AND
CONNECTED IN ACCORDANCE WITH LOCAL ELEC-
TRICAL 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
CAUTION
WARNING
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 FUNCTION-
AL, INSTALL AN INTERLOCK SWITCH.
1. Be sure that the power supply is of the correct
voltage, phase, frequency, and amperage to supply
the operator. Refer to the operator nameplate on the
cover.
2. Using the 1-1/16” dia conduit access hole as
shown below, bring supply lines to the operator and
connect wires to the terminals indicated on the
WIRING CONNECTIONS DIAGRAM.
DO NOT TURN POWER ON UNTIL YOU HAVE FIN-
ISHED MAKING ALL POWER AND CONTROL
WIRING CONNECTIONS AND HAVE COMPLETED
THE LIMIT SWITCH ADJUSTMENT PROCEDURE.
CAUTION: THIS UNIT MUST BE PROPERLY
GROUNDED. A GROUND SCREW IS SUPPLIED IN
THE ELECTRICAL BOX FOR CONNECTION OF
THE POWER SUPPLY GROUND WIRE. FAILURE
TO PROPERLY GROUND THIS UNIT COULD
RESULT IN ELECTRIC SHOCK AND SERIOUS
INJURY.
Remove the cover from the electrical enclosure. Inside this enclosure you will find the wiring diagram(s)
for your unit. Refer to the diagram (glued on the inside of the cover) for all connections described below.
If this diagram is missing, call the number on the back of this manual. DO NOT INSTALL ANY WIRING OR
ATTEMPT TO RUN THIS OPERATOR WITHOUT CONSULTING THE WIRING DIAGRAM.
POWER WIRING
POWER WIRING CONNECTIONS
ON THREE PHASE MACHINES ONLY!
Incorrect phasing of the power supply will cause the motor to rotate in the wrong direction (open when CLOSE but-
ton is pressed and vice-versa). To correct this, interchange any two of the incoming three phase power lines.
CONDUIT ACCESS
WARNING
Do Not Run Power &
Control Wiring in the
Same Conduit

8
CONTROL WIRING
Standard C2 or B2 Wiring
Standard operators are shipped from the factory with
jumper set for C2 wiring, which requires constant
pressure 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
electrical enclosure. The operator will require
constant pressure 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.
WIRING DIAGRAM
This Operator has
Control Wiring.
SUPPLEMENTAL WIRING DIAGRAM(S)
REPLACEMENT WIRING DIAGRAM
Note: Supplemental Wiring Diagrams are
to be used in addition to 1742-1.
Replacement Wiring Diagram is to be used
in place of 1742-1.
SPECIAL CONTROL
WIRING DATA
LOCATING THE CONTROL STATION
All operators are supplied with some type of control station. Generally a three button station
(OPEN/CLOSE/STOP) is provided. 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
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 AREVERSING EDGE UNDER
THESE CIRCUMSTANCES MAY RESULT IN SERIOUS
INJURYOR DEATH TO PERSONS TRAPPED
BENEATH THE DOOR.
WARNINGW A R N I N G
TO PREVENT ENTRAPMENT
DO NOT START DOOR DOWNWARD
UNLESS DOORWAY IS CLEAR
OPEN
CLOSE
STOP
Standard
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.
Wiring Diagram label on inside cover
of electrical box
Wiring
Type
SPECIAL CONTROL WIRING
If your operator was shipped from the factory with
non-standard control wiring or with optional acces-
sories that require addition instructions, refer to the
wiring diagram(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.
IMPORTANT NOTE: If your wiring diagram is missing,
or you are unsure of the wiring type for your operator, con-
tact the customer service department @ 1-800-528-2806.

9
CONTROL WIRING (con’t)
Radio Controls
On all models with type B2 control wiring, a terminal
bracket marked R1 R2 R3 is located on the outside of
the electrical enclosure. All standard radio control
receivers (single channel residential type) may be
mounted to this bracket. The operator will then open a
fully closed door, close a fully open door, and reverse
a closing door from the radio transmitter. However, for
complete door control from a transmitter, a commer-
cial three-channel radio set (with connections for
OPEN/CLOSE/STOP) is recommended.
Additional Access Control Equipment
Locate any additional access control equipment as desired (but so that the door will be in clear sight of the person
operating the equipment), and connect to the terminal block in the electrical enclosure as shown on the FIELD
WIRING CONNECTIONS diagram. Any control with a normally (N.O.) isolated output contact may be connected
in parallel with the OPEN button. More than one device may be connected in this manner. Use 16 gauge wire or
larger for all controls. DO NOT USE THE CONTROL CIRCUIT TRANSFORMER (24VAC) IN THE OPERATOR
TO POWER ANY ACCESS CONTROL EQUIPMENT OTHER THAN A STANDARD RESIDENTIAL TYPE RADIO
RECEIVER.
External Interlock Switch
The operator has a terminal connection for an external interlock switch. This switch must be a normally closed
(N.C.) two-wire device with a contact rating of at least 3 amps @ 24VAC. When such a switch is connected as
shown on the FIELD WIRING CONNECTIONS diagram, the control circuit will be disabled when the switch is actu-
ated, thereby preventing electrical operation of the door from the control devices.
WARNING
CAUTION
WARNING
WARNING
DO NOT USE RADIO CONTROLS WITH YOUR
OPERATOR UNLESS YOU HAVE INSTALLED
SOME TYPE OF ENTRAPMENT PROTECTION
DEVICE. THE USE OF RADIO CONTROLS PRE-
SENTS POTENTIAL HAZARDS DUE TO THE
USER’S ABILITY TO OPEN OR CLOSE THE
DOOR WHEN OUT OF SIGHT OF THE DOOR. IN
ADDITION, IF A SINGLE CHANNEL CONTROL IS
USED, THE USER WILL NOT BE ABLE TO STOP
THE DOOR FROM THE TRANSMITTER.
CLUTCH ADJUSTMENT
1. Remove cotterpin from nut on the clutch shaft
(taped to shaft).
2. Back off clutch nut until there is very little tension
on the clutch spring.
3. Tighten clutch nut gradually until there is just
enough tension to permit the operator to move the
door smoothly but to allow the clutch to slip if the door
is obstructed. When the clutch is properly adjusted, it
should generally be possible to stop the door by hand
during travel.
4. Install Cotterpin in holes provided.
CAUTION: The adjustable friction clutch is NOT an
automatic reversing device. An electric or pneu-
matic reversing edge can be added to bottom
edge of door if desired.
Cotterpin
Adjusting Nut
Spring
Clutch Pulley
Clutch Plate
Clutch Pad
Washer

10
TEST THE SYSTEM
Turn on power. Test all controls and safety devices to
make sure they are working properly. It will be neces-
sary to refer back to page 6 for fine adjustment of the
limit switches.
IMPORTANT NOTES:
Do not leave operator power on unless all safety
and entrapment protection devices have been
tested and are working properly.
Be sure you have read and understand all Safety
Instructions included in this manual.
Be sure the owner or person(s) responsible for
operation of the door have read and understand
the Safety Instructions, know how to electrically
operate the door in a safe manner, and know how
to use the manual disconnect operation of the
door operating system.
WARNING
CAUTION
WARNING
WARNING
DO NOT PLACE HANDS OR TOOLS IN OR NEAR
THE OPERATOR WHEN THE POWER IS ON OR
WHEN TESTING CONTROL OR SAFETY
DEVICES. ALWAYS DISCONNECT POWER
BEFORE SERVICING OR ADJUSTING THE
OPERATOR.
BRAKE ADJUSTMENT
A solenoid brake is an optional modification. If present, the brake is adjusted at the factory and should not need
additional adjustment for the the life of the friction pad. If desired, a brake can also be field installed. To order a
kit for field installation on an existing operator, call the parts and service department at 1-800-528-2806.
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