The Graco 256219 Potentiometer is the control knob for setting speed and pressure in Graco airless paint sprayers. It does this by controlling the electrical resistance so that users can control the machine to achieve the better spray quality. This potentiometer is utilize to control the speed of a motor used in spraying paint with equal consistency and flow. The advantages are, more accurate settings of the sprayer, better control of the spraying process, and higher effectiveness. Many people do not know how to maintain a potentiometer, properly which can lead to poor performance of the sprayer.
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