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Installation
Noise Reduction
Instruction Manual 307375 is supplied with this motor.
It provides information on noise reduction.
The following are additional recommendations for
Maximum Noise Reduction:
D The air line should be connected to the air motor
inlet with an electrically conductive flexible hose.
Also, use flexible fluid outlet and suction hoses.
Where possible, avoid using solid plumbing, which
carries noise vibrations.
D Mount the air motor on resilient rubber pads, rather
than sheet metal.
D Determine minimum air inlet pressure and pump
cycle rate to achieve desired spray/dispensing
results or minimum fluid pressure and flow. This will
result in less system wear and less overall noise.
Air Motor Icing
Moisture in the compressed air can collect in the air
motor and freeze, causing the motor to stall. This is
called icing. If icing occurs, shut off the air supply and
allow the ice to thaw.
To minimize icing, reduce the moisture in your com-
pressed air supply by using an air dryer or a filter
which traps water.
Slope the main air line slightly downward so water will
collect at the end of the line, where it can be drained.
Additionally, plumb each drop line from the top of the
main air line. Install an automatic drain or a drain valve
at the bottom of each drop.
Model 237000 Reduced Icing Air Motor allows you to
divert a stream of air over the air valves. This flow of
warm air prevents water from collecting and freezing.
The amount of air is adjustable with a needle valve
(88, see the parts drawing on page 22).
For additional help in designing your system, contact
your Graco distributor.