3003 W CASINO RD BLDG 40-87 2025-08-21

(E) POTTER PS40 Series The Symbol of Protection Supervisory Pressure Switch Wiring Instructions Switch Clamping Plate Terminal 1. Remove the tamper resistant screw with the special key provided. Fig 2 2. If it is necessary to remove the sealed knockouts,carefully place a screwdriver on the edge of the knockout and sharply apply a force sufficient to dislodge the knockout plug.See Fig.9. 3. Run wires through an approved conduit connector and affix the connector to the device.A NEMA-4 rated conduit fitting is OW eo required for outdoor use. 'ng 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. Inco ming Adjustment and Testing /± NOTE:Testing the PS40 may activate other system connected devices. A WAR G The operation of the pressure supervisory switch should be tested upon completion of installation and periodically thereafter in accordance with An uninsulated section of a single conductor should not be looped the applicable local,national and NFPA codes and standards and/or the around the terminal and serve as two separate connections. The authority having jurisdiction (manufacturer recommends quarterly or wire must be severed, thereby providing supervision of the more frequently). The use of a Potter BVL (see product bulletin 5400799 for details) connection in the event that the wire becomes dislodged from is recommended to facilitate setting and testing of the PS40 pressure under the terminal. switch.When a BVL(bleeder valve)is used,the pressure to the switch can be isolated and bled from the exhaust port on the BVL without Typical Sprinkler Applications affecting the supervisory pressure of the entire system.See Fig.3. The operation point of the PS40 Pressure Switch can be adjusted to any Fig 3 point between 10 and 60 psi(0,7-4,11 bar)by turning the adjustment PS40 SUPERVISORY PRESSURE SWITCH knob(s) clockwise to raise the actuation point and counter clockwise to lower the actuation point. In the case of the PS40-2,both switches AIRLINE SHUT-OFF PSIO operate independent of each other. Each switch may be independently VALVE BLEEDER ALARM adjusted to actuate at an point across the switch adjustment range.If the CHECK TEST A VE PRESSURE y , g VALVE BVL SWITCH pressure needs to be adjusted from the factory settings,adjust the system WATER pressure to the desired trip point.Use an ohmmeter on the appropriate GONER contact(COM and 2 for pressure decrease and COM and 1 for pressure CHECK RBVS DRY PIPE increase).Adjust the knurled knob until the meter changes state.At that VALVE point the switch is set for that particular pressure. Final adjustments should be verified with a pressure gauge. WATER The position of the top of the adjustment knob across to the printed DWG.#924-IA Os Y BY-PASS scale on the switch bracket can be used to provide an approximate visual VALVE VALVE reference of the pressure switch setting. Dimensions NEWAiCAUTION Fig 1 Closing of any shutoff valves between the alarm check valve o 0 2 87 GROUND c ws and the PS 10 will render the PS 10 inoperative.To comply with ADJUSTMENT [72.97] IBC,IFC,and NFPA-13,any such valve shall be electrically su- KNOB ® 422 pervised with a supervisory switch such as Potter Model RBVS. 1/2"NPT []07.19] _I 2.48 1.60 "'fff 162.871 [40.641 3.78 3.20 [95.89] [81.28] NOTE:To prevent leakage,apply Teflon tape sealant to male threads only. DWG#930-I Potter Electric Signal Company, LLC St. Louis, MO Phone: 866-956-0988 / Canada 888-882-1833 www.pottersignal.com 5400930-REV H • 2/20 PAGE 2 OF 4