Gast 4AM (SS) - Manual (Page 3)

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.
3
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.
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
Lubricating the drive shaft will make assembly
easier. Use a puller for removal of pulleys,
couplings and pinions on the motor shaft. Check
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.
Do not use a hammer on the shaft or
connections.
Use only belts with < 10 9 electrical 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.
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 or from the factory 269/926-6171.
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.
OPERATION
Air consumption data at various speeds and pressures
are available from your Gast Distributor/Representative
or the factory.
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.
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.
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.
Connection
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.
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.