LiftMaster GH Heavy Industrial-Duty Gear-Reduced Hoist Operator - 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