Chamberlain GH User manual

OWNER'S MANUAL

MODEL GH

INDUSTRIAL DUTY DOOR OPERATOR

Serial #

(located on electrical box cover)

Installation Date

Wiring Type

2 YEAR WARRANTY

C2 Wiring

F A C T O R Y S E T

See page 8 for

other wiring

configurations

NOT FOR RESIDENTIAL USE

LISTED DOOR OPERATOR

41B6

SPECIFICATIONS

14.00”

WEIGHTS AND DIMENSIONS

HANGING WEIGHT: .........80-110 LBS.

Hand Chain Wheel

See

Note #1

See

Note #2

See

Note #3

11-1/2

12-1/2

12-3/4

12-1/2

12-3/4

13-1/4

25-3/4

26-3/4

25-1/4

26-1/4

26-3/4

28-5/8

12-63/64

13-63/64

12-63/64

13-63/64

15-15/64

3-1/2

1/2

3/4

1-1/2

1/2

3/4

1-1/2

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.

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, 220, 230 Single phase

230, 460, 575 Three phase

CURRENT: .........................See motor nameplate

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.

PHASE

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

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.

WARNING

CAUTION

WARNING

CAUTION

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

FORINDOORUSEONLY

INSTALLMORETHAN8FT.ABOVEDOOR

LOCATECONTROLSTATIONSOTHATDOORISWITHIN

SITEOFPERSONOPERATINGTHECONTROL.DOOR

MUSTBECONTROLLEDBY3BUTTONSTATION

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 cotterpins.

FIGURE 2

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.

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.

WARNING

CAUTION

WARNING

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

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.

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.

Retaining Plate

CLOSE Limit Switch

SAFETY

(Aux. Close) Limit Switch

OPEN Limit Switch

Actuator

Aux. OPEN Limit Switch

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 STRONGLYRECOMMENDED THAT A

SAFETY PHOTO EYE OR SENSING EDGE BE

USED IN CONJUNCTION WITH THE OPERATOR.

NOTICE

WARNING

CAUTION

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

CAUTION

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.

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 knockout

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

FINISHED 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 button 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

7/8” Dia Knockouts for

power wiring conduit access

(2 on end panel)

1-1/16’ Dia Knockout for

power wiring conduit access

(1 nearside)

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

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.

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 commercial 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

actuated, thereby preventing electrical operation of the door from the control devices.

WARNING

CAUTION

WARNING

DO NOT USE RADIO CONTROLS WITH YOUR

OPERATOR UNLESS YOU HAVE INSTALLED

SOME TYPE OF ENTRAPMENT PROTECTION

DEVICE. THE USE OF RADIO CONTROLS

PRESENTS 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 (OPTIONAL MODIFICATION)

1. Loosen set screws on clutch nut.

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 adjusted, it should generally be

possible to stop the door by hand during travel.

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.

TO AVOID SERIOUS PERSONAL INJURY OR DEATH

FROM ELECTROCUTION, DISCONNECT ELECTRIC

POWER TO OPERATOR BEFORE ADJUSTING SLIP

CLUTCH.

WARNING

CAUTION

WARNING

TEST THE SYSTEM

Turn on power. Test all controls and safety devices to

make sure they are working properly. It will be

necessary 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

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.

The operator has been pre-wired to accept

connection of a reversing edge device. Connect the

normally open contacts to terminals T4 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.

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.

CONNECT REVERSING EDGE DEVICE (OPTIONAL)

NOTICE:

This equipment has been tested and found to comply with the limits for a Class A digital

device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference when the equipment is operated in a

commercial environment. This equipment generates, uses, and can radiate radio

frequency energy and, if not installed and used in accordance with the instruction

manual, may cause harmful interference to radio communications. Operation of this

equipment in a residential area is likely to cause harmful interference, in which case the

user will be required to correct the interference at his own expense.

WARNING

CAUTION

WARNING

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