127 SWITCHES PRESSURE H2Q PSG 2 TECHNICAL FEATURES Cover ABS Membrane EPDM Electrical connection Silver Connection Galvanised steel Fluids controlled Fresh water (5°C÷55°C) Single-phase voltage 110-230V Max power 1,5HP (110V) - 2 HP (230V) Protection degree IP 20 Rated current 12A Type of contacts 2 NC Cable glands Included CODE PH Setting range [bar] Factory setting [bar] Connection H2Q PSG 2 1 1,4 - 4,6 1,4 - 2,8 1/4" swivel nut APPLICATIONS Pressure switches for power circuits, with an adjustable differential. It is used for water and air pressure control; it allows a pump to be started and stopped at pressures determined between two thresholds: Cut-off (Stop) and Starting. PRESSURE SWITCHES WITH ADJUSTABLE DIFFERENTIAL When setting the pressure switch, adjust the switching point on starting (PH) first and then the switching point on cut-off (PB). Switching point on starting The switching point on starting (PH) is set by adjusting screw-nut 1. Switching point on cut-off The switching point on cut-off (PB) is set by adjusting screw-nut 2.
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