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(E) POTTER PS40 Series <br /> The Symbol of Protection Supervisory Pressure Switch <br /> Typical Electrical Connections One Conduit Wiring <br /> Fig 4 Fig 7 <br /> TO FIRE <br /> ALARM <br /> PANEL <br /> HIGH ® o o <br /> AIR <br /> 1 O <br /> AE05L <br /> LOW <br /> AIR <br /> WITH NORMAL SYSTEM PRESSURE APPLIED HIGH-TERMINAL 1 WILL CLOSE <br /> ON PRESSURE INCREASE. DwG#9z&a <br /> WITH NORMAL SYSTEM PRESSURE APPLIED LOW-TERMINAL 2 CLOSES ON <br /> PRESSURE DROP. <br /> Low Pressure Signal Connection Changing Pressure <br /> Fig 5 Fig 8 <br /> TO FIRE ALARM PANEL Low Pressure switch High Pressure Switch <br /> cps c Q <br /> O O 6 0 6 <br /> O O c 1 2 c i z <br /> Terminal Terminal <br /> ® C:Common 1. Open when installed under 1 .090 <br /> r <br /> 1. Closed when installed under normal system pressure. <br /> normal system Pressure. Closes on increase in <br /> pressure. Use for high air <br /> DWG#928-1 2. Open when installed under <br /> signal. <br /> normal system pressure. <br /> Closes on pressure drop. 2. Closed under normal system <br /> Use for low air signal. pressure. <br /> High Pressure Signal Connection <br /> Fig 6 <br /> TO FIRE ALARM PANEL <br /> EOLR Removing Knockouts <br /> Fig 9 <br /> O O <br /> ® 0 0 <br /> X� . /: 1 <br /> DWG#928-2 <br /> DWG-=92 R-5 <br /> Potter Electric Signal Company, LLC St. Louis, MO Phone: 866-956-0988 / Canada 888-882-1833 www.pottersignal.com <br /> 5400930-REV H • 2/20 PAGE 3 OF 4 <br />