Lift-Master GH 5HP User Manual

OWNER'S MANUAL

MODEL GH 5HP

HEAVY DUTY DOOR OPERATOR

Serial #

(located on electrical box cover) Installation Date Wiring Type

2 YEAR WARRANTY

FACTORY SET

C2 Wiring

See page 8 for

other wiring

configurations

SPECIFICATIONS

MOTOR

TYPE:....................................AC Synchronous

continuous duty brake motor

ENCLOSURE:.......................ODP NEMA 184TC face

mount.

HORSEPOWER:...................5 HP

Three phase

SPEED:.................................1725 RPM

VOLTAGE:.............................208/230 & 460 Three phase

OR 575V Three Phase

BRAKE HOLDING

FORCE:.................................15 Ft-Lbs

DRIVE SYSTEM

CONTINUOUS

POWER RATING: .................1000 Ft-Lbs/Sec

GEAR BOX:..........................Worm gear

LUBRICATION:.....................Oil Bath

RATIO: ..................................45:1

OUTPUT SPEED: .................38 rpm

DOOR SPEED: .....................5” per sec.

depending on door

OUTPUT SHAFT:..................1.5” Dia. with 3/8” keyway

OVERHUNG LOAD:..............1752 Lbs.

(1.5” from output bearing face)

HOIST WHEEL: ....................Standard mounting on

left or right side.

DISCONNECT:......................Floor level chain hoist with

electrical interlock for emergency manual door operation.

ELECTRICAL

TRANSFORMER:...............3PH: 208/230/480 VAC 24VAC

OR 3PH: 575VAC-24VAC

CONTROL STATION: ........NEMA 1 three button station.

OPEN/CLOSE/STOP

WIRING TYPE: ...................Standard C2 Wiring- Standard

operators are shipped from the factory set for C2 wiring, which requires momentary contact to open, constant pressure to close, stop on release.

Optional B2 Wiring- Which requires momentary contact to open, close and stop. See schematic diagram on page 12 for instructions on how to configure the operator for B2 wiring

Wiring for sensing device to reverse and auxiliary devices to open and close with open override.

LIMIT ADJUST: ..................Rotary driven, fully

adjustable screw type cams. Adjustable to 50 feet. (Provides 2 minutes of operator running time).

DUTY CYCLE:....................25 Reversing cycles per hour

DELAY ON REVERSE:.......Standard

SAFETY

REVERSING EDGE:.......(Optional) Electric or pneumatic

sensing device attached to the bottom edge of door.

A REVERSING EDGE IS STRONGLY RECOMMENDED

ALL

FOR

REQUIRED

IS OUT OF SIGHT OF DOOR OR ANY OTHER CONTROL (AUTOMATIC OR MANUAL) IS USED.

SHOULD THE CHAIN OR OPERATOR FAIL AS AN ADDED SAFETY FEATURE, IT IS RECOMMENDED TO USE STOP LOCK BEARINGS ON THE DOOR SHAFT TO PREVENT THE DOOR FROM CRASHING DOWN.

COMMERCIAL OPERATOR INSTALLATIONS.

WHEN THE 3 BUTTON CONTROL STATION

WEIGHTS AND DIMENSIONS

HANGING WEIGHT:.......300 LBS.

18.00”

See Note #1

2.38” Hand Chain Wheel

NOTES:

1) Output Shaft 1.5” Dia. with 3/8” Keyw a y.

40.25”

8.50”

26.38”

7.87”

11.61”

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

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.

OPERATOR PREPARATION

IMPORTANT SAFETY NOTES

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 outer snap ring securing the chain wheel assembly. In reverse of disassembly, install the chain wheel assembly on the opposite side of the gear hoist housing.

FIGURE 2

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.

FIGURE 1

BEARING PLATES RECOMMENDED MIN. SIZE 1/4” THK. 2” X 2” SQ. MIN. STEEL

OPTIONAL MOUNTING PLATE (SEE PAGE 16)

USE 5/8” DIA. BOLTS THAT PROTRUDE THROUGH THE WALL, WITH BEARING PLATES ON THE OUTSIDE OF THE BUILDING TO DISPLACE THE LOAD.

5/8” DIA. BOLT

HEX NUT

LOCK WASHER

CAUTION

WARNING

Chain Guide

Hand

Chain Wheel

OPERATOR MOUNTING

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. NOTE: The operator has a weight of 300 lbs.

1a. Wall Mounting

The operator should generally be installed below the door shaft, and as close to the door as possible. Refer to Figure 3.

1b. Bracket or Shelf Mounting

The operator may be mounted either above or below the door shaft. Refer to Figure 4.

Typical Right Hand Wall Mounted Operator

FIGURE 3

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 using suitable lifting apparatus 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).

IMPORTANT:

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.

The shelf or bracket must

FIGURE 4

Be sure door sprocket is properly aligned with drive before securing to the shaft.

Chain Keeper

FIGURE 5

This operator is 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

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. Install locking collar onto the disconnect chain. Place end through the keyhole in the chain keeper. With the disconnect chain having no slack slide collar up 3” from keyhole in the chain keeper and lock into place by tightening the set screw. Confirm that when the sash chain is pulled, the locking collar is against the chain keeper and at the same time, the bevel gears located in the operator hoist mechanism are in full engagment. If not then readjust the collar to assure full engagment. Remove excesss links if necessary.

EMERGENCY MANUAL OPERATION

This operator has provisions for manually operating the door in case of emergency or power failure.

Model GH 5HP

Chain Keeper (with pad locking provisions)

Manual Hoist

TURN OFF POWER TO THE OPERATOR BEFORE MANUALLY OPERATING YOUR DOOR.

WARNING

Released Position

Engaged Position

3”

COLLAR

12-14737

WARNING

ENTRAPMENT PROTECTION ACCESSORIES (OPTIONAL)

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.

IT IS STRONGLY RECOMMENDED THAT A SENSING EDGE OR OTHER ENTRAPMENT PROTECTION DEVICE BE USED IN CONJUNCTION WITH THIS OPERATOR.

WIRING:

For wiring of your sensing device to the operator, refer to the schematic diagram supplied with your operator. 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.

LIMIT SWITCH ADJUSTMENT

MAKE SURE THE LIMIT NUTS ARE POSITIONED BETWEEN THE LIMIT SWITCH ACTUATORS BEFORE PROCEEDING WITH ADJUSTMENTS.

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.

CLOSE Limit Switch

WARNING

TO AVOID SERIOUS PERSONAL INJURY OR DEATH FROM ELECTROCUTION, DISCONNECT ELECTRIC POWER BEFORE MANUALLY MOVING LIMIT NUTS.

If other problems persist, call our toll-free number for assistance - 1-800-528-2806.

OPEN Limit Switch

Actuator

SAFETY

(Aux. Close) Limit Switch

Retaining Plate

Aux. OPEN Limit Switch

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