PS10 Series Pressure Switch Features One or two switch models available Independent switch adjustment on two switch models, no tools needed Two 1/2 conduit/cable entrances Separate isolated wiring chambers Non-corrosive pressure connection VdS version available Non-Conductive enclosure This document contains important information on the installation and operation of PS10 pressure switches. Please read all instructions carefully before beginning installation. A copy of this document is required by NFPA 72 to be maintained on site. Installation Technical Specifications The Potter PS10 Series Pressure Actuated Switches are designed for Two knockouts for 1/2 conduit provided. Individual switch Conduit Entrances the detection of a waterflow condition in automatic fire sprinkler compartments and ground screw suitable for dissimilar voltages systems of particular designs such as wet pipe systems with alarm SPDT (Form C) check valves, dry pipe, preaction, or deluge valves. The PS10 is Contact Ratings 10.1 Amps at 125/250VAC, 2.0 Amps at 30VDC also suitable to provide a low pressure supervisory signal adjustable One SPDT in PS10-1, Two SPDT in PS10-2 between 4 and 15 psi (0,27 and 1,03 bar). Cover incorporates tamper resistant fastener that requires a special Cover Tamper key for removal. One key is supplied with each device. 1. Apply Teflon tape to the threaded male connection on the device. (Do not use pipe dope) Differential 2 psi (0,13 bar) typical Dimensions 3.78(9,6cm)Wx3.20(8,1cm)Dx4.22(10,7cm)H 2. Device should be mounted in the upright position (threaded connection down). Cover: Weather/UV/Flame Resistant High Impact Composite Enclosure Base: Die Cast 3. Tighten the device using a wrench on the flats on the device. All parts have corrosion resistant finishes -40 F to 140F (-40C to 60C) Environmental NEMA 4/IP66 Rated Enclosure indoor or outdoor when used with Limitations Wiring Instructions NEMA 4 conduit fittings 1. Remove the tamper resistant screw with the special key Factory Adjustment 4 - 8 psi (0,27 - 0,55 bar) provided. Maximum System 300 psi (20,68 bar) Pressure 2. Carefully place a screwdriver on the edge of the knockout and sharply apply a force sufficient to dislodge the knockout plug. Pressure Connection Nylon 1/2 NPT male See Fig 9. Pressure Range 4-15 psi (0,27 - 1,03 bar) 3. Run wires through an approved conduit connector and affix the Service Use NFPA 13, 13D, 13R, 72 connector to the device. NEMA 4 rated conduit and fittings are required for outdoor use. *Specifications subject to change without notice. 4. Connect the wires to the appropriate terminal connections for the service intended. See Figures 2,4,5, and 6. See Fig. 7 for two switch, one conduit wiring. Potter Electric Signal Company, LLC St. Louis, MO Phone: 800-325-3936 www.pottersignal.com 5400928 - REV E 2/20 PAGE 1 OF 4Incoming Outgoing PS10 Series Pressure Switch Testing and Adjustment NOTE: Testing the PS10 may activate other system connected devices. The operation of the pressure alarm switch should be tested upon completion of installation and periodically thereafter in accordance with the applicable NFPA codes and standards and/or the authority having jurisdiction (manufacturer recommends quarterly or more frequently). There should be no need to adjust the PS10 when it is used as a pressure type waterflow indicator. It is factory set to comply with UL and FM standards. Wet System Method 1: When using PS10 and control unit with retard - connect PS10 into alarm port piping on the input side of retard chamber and electrically connect PS10 to control unit that provides a retard to compensate for surges. Insure that no unsupervised shut-off valves are present between the alarm check valve and PS10. Method 2: When using the PS10 for local bell application or with a control that does not provide a retard feature - the PS10 must be installed on the alarm outlet side of the retard chamber of the sprinkler system. Testing: Accomplished by opening the inspectors end-of-line test valve. Allow time to compensate for system or control retard. NOTE: Method 2 is not applicable for remote station service use, if there is an unsupervised shut-off valve between the alarm check valve and the PS10. Wet System With Excess Pressure Connect PS10 into alarm port piping extending from alarm check valve. Retard provisions are not required. Insure that no unsupervised shut-off valves are present between the alarm check valve and the PS10. Testing: Accomplished by opening the water by-pass test valve or the inspectors end-of-line test valve. When using end-of-line test, allow time for excess pressure to bleed off. Dry System Connect PS10 into alarm port piping that extends from the intermediate chamber of the alarm check valve. Install on the outlet side of the in-line check valve of the alarm port piping. Insure that no unsupervised shut-off valves are present between the alarm check valve and the PS10. Testing: Accomplished by opening the water by-pass test valve. NOTE: The above tests may also activate any other circuit closer or water motor gongs that are present on the system. Dimensions Switch Clamping Plate Terminal Fig 1 Fig 2 GROUND SCREWS 2.87 72.97 ADJUSTMENT 4.22 KNOB 107.19 1/2 NPT 2.48 1.60 62.87 40.64 3.20 3.78 81.28 95.89 NOTE: To prevent leakage, apply Teflon tape sealant to male threads only. DWG 930-1 An uninsulated section of a single conductor should not be looped around the terminal and serve as two separate connections. The wire must be severed, thereby providing supervision of the connection in the event that the wire becomes dislodged from under the terminal. Potter Electric Signal Company, LLC St. Louis, MO Phone: 800-325-3936 www.pottersignal.com 5400928 - REV E 2/20 PAGE 2 OF 4