Gast 4AM User Manual

www.gastmfg.com

ISO 9001 & 14001 CERTIFIED

PART NO. 45-200SS Rev C

STAINLESS SERIES LUBRICATED AIR MOTORS

OPERATION & MAINTENANCE MANUAL

1AM

Thank you for purchasing this Gast product. It is manufactured to the highest standards

using quality materials. This manual includes general safety instructions for operation under normal conditions

and for operation in hazardous conditions. Please follow all recommended maintenance, operational and

safety instructions and you will receive years of trouble free service.

IMPO RTANT: PLEASE READ THIS MANUAL COMPLETELY BEFORE INSTALLING

AND USING THIS MOTOR. SAVE THIS MANUAL FOR FUTURE REFERENCE

AND KEEP IN THE VICINITY OF THE MOTOR.

General information

Operating Pressure Limits:Model Pressure

1AM 100 PSI / 7 bar 4AM 100 PSI / 7 bar 6AM 100 PSI / 7 bar

4AM

6AM

Product Use Criteria:

• Normal conditions: Operate at temperatures up to 250ºF (121ºC).

• Hazardous conditions: Operate at temperatures up to 104ºF (40ºC).

• Protect unit from dirt and moisture.

• Use ONLY compressed air to drive motor.

• Air lines connected to motor should be the same size or

the next size larger than the inlet port for efficient output and speed control.

• Protect all surrounding items from exhaust air.

• Bearings are packed with food grade grease.

• Use Gast #AS117 food grade oil, #AD220 pneumatic

lubricating oil, or a detergent SAE#10 automotive

engine oil for lubricating.

• Motors are to be used in commercial installations only.

• This symbol appears on labels of air motors that

are designed for use in hazardous atmospheres. These air motors comply with the applicable standards and specifications and meet the requirements of the guidelines of the EC directive 94/9EC (ATEX 100a). They are intended to be used in zones 1 and 2 where explosive atmospheres are likely to occur.

• Air supply, directional control valve and pressure regulator

should be selected based upon the air consumption of the motor.

Your safety and the safety of others

is extremely important.

e have provided many important safety messages in

W this manual and on your product. Always read and obey all safety messages.

his is the safety alert symbol. This symbol

T alerts you to hazards that can kill or hurt you and others. The safety alert symbol and the words “DANGER”and “WARNING” will precede all safety

essages. These words mean:

DANGER

e killed or seriously injured if you donʼt follow

ou will

Y instructions.

WARNING

You can instructions.

All safety messages will identify the hazard, tell you how to reduce the chance of injury, and tell you what can happen if the safety instructions are not followed.

be killed or seriously injured if you donʼt follow

Complete the following checklist prior to

starting installation in a hazardous area. All actions must be completed in accordance with ATEX 100a.

Checklist for installation in hazardous areas:

Read air motor label to check that motor has been designed for use in a hazardous application:

• Hazardous zone

• Hazardous category

• Equipment group

• Temperature class

• Maximum surface temperatures

xample:

E Model designation: 1UP-NRV-10 Year manufactured: 2003

Gast Mfg. Corp. II 2GD c + 1ºC Ta +40ºC* Benton Harbor, MI USA Telephone: 269.926.6171

* Legend: II Equipment group II 2 Equipment category 2 G Gas atmospheres D Dust atmospheres c Constructional safety +1CTa +40ºC Max. surface temp. 275ºF/135ºC Ambient range +1ºC to +40ºC (34ºF/104ºF)

Improper environment, installation and operation can result in severe personal injury and/or damage to property.

Qualified personnel must perform all work to assemble, install, operate, maintain and repair air motor.

Qualified personnel must follow:

• These instructions and the warning and information labels on the motor.

• All other drive configuration documents, startup instructions and circuit diagrams.

• The system specific legal regulations and requirements.

• The current applicable national and regional specifications regarding explosion protection, safety and accident prevention.

Check the site environment for potentially explosive oils, acids, gases, vapors or radiation

Check the ambient temperature of the site and the ability to maintain proper ambient temperature. Ambient range: Normal conditions: 34ºF/1ºC to 250ºF/121ºC Hazardous conditions: 34ºF/1ºC to 104ºF/40ºC

Check the site to make sure that the air motor will be adequately ventilated and that there is no external heat input (e.g. couplings). The cooling air may not exceed 104ºF/40ºC.

Check that products to be driven by the air motor meet ATEX approval.

Check that the air motor is not damaged.

INSTALLATION

Correct installation is your responsibility. Make sure you

have the proper installation conditions.

Injury Hazard

Install proper guards around output shaft as needed.

Air stream from product may contain solid or liquid materials that can result in eye or skin damage.

Wear eye protection when installing this product.

Failure to follow these instructions can result in serious injury or property damage.

Mounting

This product can be installed in any orientation. Mount the motor to a solid metal base plate that is mounted to a stable, rigid operating surface. Use shock mounts to reduce noise and vibration. Install a pressure regulator or simple shut-off valve to control motor.

Connection

Do not use a hammer on the shaft or connections.

Lubricating the drive shaft will make assembly easier. Use a puller for removal of pulleys,

ouplings and pinions on the motor shaft. Check

c that the tension on the belt pulley matches the manufacturerʼs specifications. Do not exceed the maximum radial and axial forces on the shaft. If the motor shaft is connected to the part to be driven without a coupling, check that the radial offset and axial force effect will not cause problems.

Use only belts with < 109electrical leakage resistance to prevent static electrical problems.

Accessories

Consult your Gast representative for filter recommendations. Install a moisture trap and filter in the air line ahead of the motor. For the most efficient output and control of speed use air lines that are the same size or the next pipe size larger than the motor intake.

Check the direction of the motor airflow. A single rotation motor will operate properly only in one direction. Single rotation motors require a sound absorber to be connected to the air port. Remove the plastic shipping plugs from the ports. Save plugs for future use during storage.

Install a 5-micron filter in the air line before the connection to the motor. Next install an air pressure regulator to control motor speed and torque.

An automatic air line lubricator should be installed in the air line as close as possible and no more than 18 inches (1/2 meter) from the air motor. Install the lubricator level with or above the air motor so that the oil mist will blow directly into or fall down into the motor.

Fill the oil reservoir to the proper level with Gast #AS117 food grade oil, #AD220 pneumatic lubricating oil, or a detergent SAE#10W automotive engine oil. Adjust lubricator to feed 1 drop of oil for every 50-75 cubic feet of air while the unit is running. Do Not overfeed oil or exhaust air may become contaminated.

Clean the compressed air connection with low pressure air to remove any dirt from the line before connecting to the ports.

Use the proper sized fasteners. For the most efficient output and control of speed, use air lines that are the same size as the motor inlet port if the connection is less than 7 feet (2 meters). For longer connections, use the next pipe size larger than the motor intake port. Connect lines to motor in the proper direction.

A reversible motor will work equally well in both directions. Connect a 4-way valve with piping to both air ports of motor to make reversing possible. Connect the sound absorber on the exhaust air port or valve connection.

Do not add any thrust to the end or side of the shaft when making connections. To press a component onto the shaft, remove the end cap and support the rear end of the shaft

An automatic air line lubricator should be installed 18” or as close as possible in the air line just ahead of the motor. Adjust the lubricator to feed one drop oil for every 50-75 cubic feet of air moving through the motor. Air consumption at various speeds and pressures are available from your local Gast representative, online at www.gastmfg.com

Air consumption data at various speeds and pressures are available from your Gast Distributor/Representative or the factory.

or from the factory 269/926-6171.

OPERATION

Injury Hazard

Air stream from product may contain solid or liquid material that can result in eye or skin damage.

Do Not use combustible gases to drive this motor.

Wear hearing protection. Sound level from motor may exceed 87db(A).

Failure to follow these instructions can result in eye injury or other serious injury.

Check all connections before starting motor. It is your responsibility to operate this product at recommended speeds, loads and room ambient temperatures. Do not run the motor at high speeds with no load. This will result in excessive internal heat that may cause motor damage.

The starting torque is less than the running torque. The starting torque will vary depending upon the position of the vanes when stopped in relation to the air intake port.

+ 7 hidden pages

Gast 4AM User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual