Pressure Supervisory Switch
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DOUBLE INTERLOCK, PREACTION SYSTEM - HD Fire
www.hdfire.comValve from the system air pressure. Riser Check Valve provides an air check so that the system can be automatically pressurized with a supervisory air or nitrogen pressure of 42 PSI (2.94 Bar). A supervisory low pressure alarm switch can be set at 20 PSI (1.40 Bar), on decreasing pressure, to indicate whether
WEEKLY FIRE PUMP INSPECTION & TEST PROCEDURES
paragonconsults.comsupervisory signals were received by the alarm monitoring facility. ... • Check to make sure the transfer switch pilot light is illuminated ... • Record the pressure at which the pump automatically started. • Record the pump suction and discharge pressures.
Features
www.pottersignal.comPressure Switch 5400928 - REV E 2/20 PAGE 1 OF 4 ... also suitable to provide a low pressure supervisory signal; adjustable between 4 and 15 psi (0,27 and 1,03 bar). 1. Apply Teflon tape to the threaded male connection on the device. (Do not use pipe dope) 2. Device should be mounted in the upright position (threaded connection