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:
DThe 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.
DMount the air motor on resilient rubber pads, rather than sheet metal.
DDetermine 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.
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