LiftMaster GH GH Logic 4 Quick Start Guide Manual

Operator Mounting

Wall Mount:

The operator should generally be installed below the door shaft, and

as close to the door as possible.

Bracket Shelf Mounting:

The operator may be mounted either above or below the

door shaft.

NOTE:

The optimum distance between the door shaft and operator drive shaft is

between 12 - 15 inches.

Place door sprocket on the door shaft.

Do not insert the key at this time.

Place drive sprocket on the appropriate side of the operator.

Do not insert the key at this time.

Wrap chain drive around door sprocket and join roller chain ends together with

master link.

Raise operator to approximate mounting position and position chain over operator

sprocket.

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.

Align sprockets, insert key into keyway, and secure.

Place hand chain around hand chain wheel.

Run the power wires through the power wiring conduit hole in the electrical box

enclosure. Connect the power to the operator. Connect the earth ground to the

ground screw in the electrical box enclosure.

Follow ALL local electrical codes.

Adjust the limit switches to open and close door properly. Make sure the limit nuts

are positioned between the limit switches before proceeding with adjustments.

Radio programming and troubleshooting instructions inside cover of operator.

1b

1a

2

3

4

5

6

7

8

9

10

11

Align Sprockets

7

Inside the Electrical Box

Limit Switches

CLOSE

OPEN

SAFETY

Direction Limit Nut Will Move During Travel

Retaining

Plate

Push

Limit Nuts

POWER WIRING

USE COPPER WIRE ONLY

L1

L2

Single Phase Connections

9

14 AWG Minimum

Follow ALL national

and local electrical codes.

Power wiring ONLY!

Turn off power

to the operator

BEFORE

manually

operating your door.

Be sure door

sprocket is properly

aligned with drive

before securing to

the shaft.

Chain Keeper

(4' above floor)

10

Optimum Distance

12" - 15"

Right Hand Wall Mounted Operator

1a

Bracket Shelf Mounted Operator

1b

This operator has provisions for manually operating the door in case

of emergency or power failure. These operators are equipped with a

manual hoist. An electrical interlock will disable the electrical controls

when the hoist is used.

Turn off power to the operator BEFORE

manually operating your door.

To operate the hoist, 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. Operate the door in the desired

direction by pulling on one side or the other of the continuous loop

hoist chain (large chain). The disconnect chain must be released

from the chain keeper before the door will operate again electrically.

Manual Operation

Electrical Interlock with Hoist

Electrical Interlock with Hoist

QuickStart

for the model GH door operator

Chain Keeper

(with pad locking provisions)

Mount Chain

Keeper 4'

above floor

OPTIONAL

Mounting Bracket

P/N 08-9098

Optimum

Distance

12" - 15"

LOGIC 4

HOT

HOT

NEUTRAL EARTH

IMPORTANT: This QuickStart is intended to highlight a typical installation. These instructions are not intended to be comprehensive. Since 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. Please consult the manual and/or a qualified technician for further information.

POWER WIRING

USE COPPER WIRE ONLY

L1

L2

DEDICATED

CIRCUIT

Three Phase Connections

L3

DEDICATED CIRCUIT

LiftMaster GH GH Logic 4 Quick Start Guide Manual

LiftMaster GH Manual

LiftMaster GH manual content summary: