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SYSTEM <br /> SENSOR® <br /> WFD Series <br /> Waterflow Detector <br /> System Sensor' WFD series is compatible <br /> with schedule 10 through 40 steel pipe,sizes <br /> 2"through 8,and can be mounted in a vertical <br /> or horizontal position. <br /> Features Robust Construction.The WFD series consists of a rugged, <br /> NEMA 4 rated enclosure.Designed for both indoor and outdoor <br /> •Two-inch conduit openings in new WFD30-2 models use,the WFD series operates across a wide temperature range,from <br /> •UL listed models are NEMA 4 rated 32°F to 120°F. <br /> •Sealed retard mechanism immune to dust and other contaminants Reliable Performance.UL listed models are equipped with <br /> •Visual switch activation tamper resistant cover screws to prevent unauthorized entry.Inside, <br /> two sets of SPDT(Form Q synchronized switches are enclosed in a <br /> •Field replaceable retard mechanism and SPDT switches durable terminal block to assure reliable performance. <br /> •Rugged,dual SPDT switches enclosed in a durable terminal block <br /> False Alarm Immunity.The WFD series incorporates a mechanical <br /> •Accommodates up to 12 AWG wire retard feature,which minimizes the risk of false alarm due to <br /> •Designed for both indoor/outdoor use pressure surges or air trapped in the sprinkler system.In addition, <br /> the mechanical retard's unique sealed design is immune to dust and <br /> •100 percent synchronization activates both alarm panel and other contaminants. <br /> local bell <br /> •Tamper resistant cover screws Simplified Operation.The WFD series is designed to simplify <br /> installation.Two conduit openings permit easy attachment to the <br /> local alarm system.The retard mechanism and dual SPDT switches <br /> are field-replaceable. <br /> Agency Listings <br /> & O U�` s MEA FM <br /> LISTED approved A0 <br /> 5739 C5169 7770-1209.140 167-93-E 1W9A2AH <br />