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ASI Controls Building Automation Bard Wall-Mount and HVAC Equipment
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P12 Series Differential Pressure Controls Description The P12 series Differential Pressure controls are suitable for use with oil and/or non-corrosive refrigerants. The switch is actuated by a difference in pressure between the two sensing elements. The control is factory-set to open the switch (COM to 1) at a differential pressure of 18 psi (124 kPa) and close the switch (COM to 1) at a differential pressure of 12 psi (83kPa). The control is not field-adjustable. This control may be connected to a P28 lube oil control, with time delay, to give complete monitoring of lubrication on two refrigeration compressors driven by one motor. Selection Chart
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