Adjust the differential pressure accordingly. Turn clockwise to increase (if you want a higher maximum pressure) or count-clockwise to decrease (if you want a lower maximum pressure. Open the drain valve and wait until the pressure drops low enough to start the compressor. Close the drain valve.
Why is there a need for compressor pressure switch adjustment? Really. The factory settings for your air compressor pressure switch are the correct settings.
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The air compressor pressure switch helps to measure the pressure inside your air tank and. Adjust the pressure switch's set point by turning the set-point screw