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MODEL PS40 (VdS) (2,) POTTER The Symbol of Protection `" SUPERVISORY PRESSURE SWITCH `UL, cUL, and CSFM Listed, FM and LPC Approved, NYMEA Accepted,CE Marked,VdS Dimensions:(9,6cm)3.78"W x(8,lcm)3.20"D x(10,7cm)4.22"H Conduit Entrance: Two knockouts provided for 1/2"conduit.Individual T i switch compartments and ground screw suitable for dissimilar voltages. P Enclosure: Cover-Die-cast with textured red powdercoat finish,single cover screw and rain lip. Base-Die-cast Pressure Connection:Nylon 1/2"NPT male Factory Adjustment: PS40-1 operates on decrease at 2,1 BAR(30 PSI) PS40-2 operates in increase at 3,5 BAR(50 PSI)and on decrease at 2,1 BAR(30 PSI) Pressure Range: 0,7-4,1 BAR(10-60 PSI) Differential: Typical 0,07 at 0,7 BAR(1 lb.at 10 PSI) 0,28 at 4,1 BAR(4 lbs.at 60 PSI) Maximum System Pressure: 17,2 BAR(250 PSI) Switch Contacts: SPDT(Form C) 10.1 Amps at 125/250VAC,2.0 Amps at 30VDC One SPDT in PS40-1,Two SPDT in PS40-2 Models: PS40-1 VDS Environmental Specifications: PS40-2 VDS NEMA 4/IP66 Rated Enclosure-indoor or outdoor when used with NEMA 4 conduit fittings. Service Use = Temperature range:-40°C to 60°C(-40°F-140°F) Automatic Sprinkler NFPA-13 Tamper: Cover incorporates tamper resistant fastener that requires a One or two family dwelling NFPA-13D special key for removal. One key is supplied with each device. Residential Occupancy up to four stories NFPA-13R For optional cover tamper switch kit,order Stock No.0090200. National Fire Alarm Cade NFPA-72 See bulletin#5401200 PSCTSK. Installation Adjustment And Testing The PotterPS40 Series Supervisory PressureActuated Switches are designed The operation of the supervisory pressure switch should be tested upon primarily to detect an increase and/or decrease from normal system pressure completion of installation and periodically thereafter in accordance with in automatic fire sprinkler systems. Typical applications are: Dry pipe the applicable NFPA codes and standards and/or the authority having systems,pre-action air/nitrogen supervision,pressure tanks, air supplies, jurisdiction(manufacturer recommends quarterly or more frequently). and water supplies. The PS40 switch is factory set for 2,8 BAR(40 PSI) normal system pressure. The switch marked with the word LOW is set to Note. Testing the PS40 may activate other system connected devices. operate at a pressure decrease of,7 BAR(10 PSI)at 2,1 BAR(30 PSI). The The use of a Potter BVL(see product bulletin 8900067 for details)is switch marked with the word HIGH is set to operate at a pressure increase recommended to facilitate setting and testing of the PS40 pressure switch. of,7 BAR(10 PSI)at 3,5 BAR(50 PSI). See section heading Adjustments When a BVL(bleeder valve)is used,the pressure to the switch can be and Testing if other than factory set point is required. isolated and bled from the exhaust port on the BVL without effecting the 1. Connect the PS40 to the system side of any shutoff or check valve. supervisory pressure of the entire system. See Fig.3 2. Apply Teflon tape to the threaded male connection on the device. (Do not use pipe dope) The operation point of the PS40 Pressure Switch can be adjusted to any 3. Device should be mounted in the upright position. point between 0,7-4,11 BAR(10 and 60 PSI)by turning the adjustment (Threaded connection down) knob(s)clockwise to raise the actuation point and counter clockwise to 4. Tighten the device using a wrench on the flats on the device. lower the actuation point. In the case of the PS40-2,both switches operate Wiring Instructions independent of each other. Each switch may be independently adjusted to 1. Remove the tamper resistant screw with the special key provided. actuate at any point acrosss the switch adjustment range. Initial adjustment 2. Carefully place a screwdriver on the edge of the knockout and sharply can be made with a visual reference from the top of the adjustment knob apply a force sufficient to dislodge the knockout plug. See Fig.9 across to the printed scale on the switch bracket. Final adjustments should 3. Run wires through an approved conduit connector and affix be verified with a pressure gauge. the connector to the device. A NEMA-4 rated conduit fitting is required for outdoor use. 4. Connect the wires to the appropriate terminal connections for the service intended.See Figures 2,4,5,6,and 8 PotterElectric Signal Company•St.Louis,MO•Customer Service:866-572-3005•Tech Support:866-956-0988•Canada 888-882-1833•www.pottersignal.com PRINTED IN USA WG.#5401161-REV D PAGE 1 OF 8 09/12