Potter PS100 Excess Pressure Pump Supervisory Switch

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Features Two switch model Independent switch adjustment no tools needed Two 1 2 conduit cable entrances Separate isolated wiring chambers Non corrosive pressure connection Non Conductive Enclosure document contains important information on the installation operation of PS100 pressure switches Please read all carefully before beginning installation A copy of this is required by NFPA 72 to be maintained on site Potter PS100 Pressure Actuated Switches are designed primarily detect a decrease from normal system pressure in automatic fire systems A typical application is for an alarm initiating device is used on a wet system with excess pressure The PS100 2 has SPDT switches factory set to operate on a pressure drop at 90 psi bar See section heading Adjustments and Testing if other than set point is required Connect the PS100 to the system side of any shutoff or check Apply Teflon tape to the threaded male connection on the Do not use pipe dope Device should be mounted in the upright position Threaded down Tighten the device using a wrench on the flats on the device Instructions Remove the tamper resistant screw with the special key Carefully place a screwdriver on the edge of the knockout and apply a force sufficient to dislodge the knockout plug Fig 9 Run wires through an approved conduit connector and affix the to the device NEMA 4 rated conduit and fittings are for outdoor use Connect the wires to the appropriate terminal connections for the intended See Figures 2,4,5 and 6 See Fig 7 for two one conduit wiring Specifications Entrances Ratings Tamper knockouts for 1 2 conduit provided Individual switch and ground screw suitable for dissimilar voltages SPDT Form C Amps at 125 250VAC 2.0 Amps at 30VDC incorporates tamper resistant fastener that requires a special for removal One key is supplied with each device 2 lbs at 25 psi 14 at 1,7 bar lbs at 175 psi 55 at 12,1 bar Weather UV Flame Resistant High Impact Composite Die Cast parts have corrosion resistant finishes F to 140 40 to 60 4 IP66 Rated Enclosure indoor or outdoor when used with 4 conduit fittings psi 6,2 bar psi 20,68 bar Adjustment System Connection Nylon 1 2 NPT male Range Use psi 1,7 12,1 bar 13 13D 13R 72 subject to change without notice PAGE 1 OF 4 Switch5400932 REV E 2 20Potter Electric Signal Company LLC St Louis MO Phone 800 325 3936 www pottersignal comfirealarmresources com and Testing operation of the waterflow pressure switch should be tested upon completion of installation and periodically thereafter in accordance with the NFPA codes and standards and or the authority having jurisdiction manufacturer recommends quarterly or more frequently Testing the PS100 may activate other system connected devices The use of a Potter BVL see product bulletin 8900067 for details is to facilitate setting and testing of the PS100 pressure switch When a BVL bleeder valve is used the pressure to the switch can be and bled from the exhaust port on the BVL without effecting the supervisory pressure of the entire system See Fig 3 operation point of the PS100 Pressure Switch can be adjusted to any point between 25 and 175 psi 1,7 12,1 bar by turning the adjustment knob s to raise the actuation point and counter clockwise to lower the actuation point Both switches operate independent of each other Each switch be independently adjusted to actuate at any point acrosss the switch adjustment range Initial adjustment can be made with a visual reference from top of the adjustment knob across to the printed scale on the switch bracket Final adjustments should be verified with a pressure gauge 1 NPT To prevent leakage apply Teflon tape sealant to male threads only 930 1 Clamping Plate Terminal 2 Sprinkler Applications 3 uninsulated section of a single conductor should not be looped around the and serve as two separate connections The wire must be severed providing supervision of the connection in the event that the wire dislodged from under the terminal ALARM PRESSURE VALVE VALVE 925 1A Y Y PAGE 2 OF 4 REV E 2 20Potter Electric Signal Company LLC St Louis MO Phone 800 325 3936 www pottersignal comPS100Pressure Switchfirealarmresources com Connections 4 NORMAL CLOSES ON DROP FIRE Signal Connection 5 FIRE ALARM PANEL CIRCUIT CLOSES ON ALARM A LOCAL BELL DC HOT AC DC OR AC 932 1 Bell For Waterflow Connection 6 DC NEUTRAL AC DC HOT AC LINE LOAD 928 1 932 2 Conduit Wiring 7 out thin section of divider to provide path for wires when wiring switches from one conduit entrance Pressure with normal system pressure 8 SWITCH ONE TWO Closed under normal system pressure Open under normal system pressure closes on pressure Use as waterflow detector 932 3 928 4 PAGE 3 OF 4 REV E 2 20Potter Electric Signal Company LLC St Louis MO Phone 800 325 3936 www pottersignal comPS100Pressure Switchfirealarmresources com Knockouts 9 Specifications Type Waterflow Switch type waterflow switches shall be a Model PS100 2 as by Potter Electric Signal Company St Louis MO and be installed on the fire sprinkler system as shown and or specified shall be provided with a NPT male pressure connection to connected to the excess pressure supply line on the system side of shut off or check valve A Model BVL bleeder valve as supplied Potter Electric Signal Company of St Louis MO or equivalent be connected in line with the PS100 2 to facilitate testing of the type waterflow switches shall have a maximum service rating of 300 psi 20,68 bar and shall be factory adjusted to on a pressure decrease of 10 psi 14,5 bar switch shall have two Form C contacts switch contact rating 10.1 Amps at 125 250 VAC 2.0 Amps at 30 VDC type waterflow switches shall have two conduit entrances for each individual switch compartment to facilitate the use of voltages for each individual switch cover of the pressure type waterflow switch shall be Weather UV Resistant High Impact Compositewith rain lip and shall attach one tamper resistant screw The pressure type waterflow switch be suitable for indoor or outdoor service with a NEMA 4 IP66 pressure type waterflow switch shall be UL ULC and CSFM FM and LPC approved and NYMEA accepted must be performed by qualified personnel and in accordance with all national and local codes and ordinances hazard Disconnect power source before servicing Serious injury or death could result all instructions carefully and understand them before starting installation Save instructions for future use Failure to read and understand instructions could result in improper operation of device resulting in serious injury or death of explosion Not for use is hazardous locations Serious injury or death could result not tighten by grasping the switch enclosure Use wrenching flats on the bushing only Failure to install properly could damage the switch and cause improper operation resulting in damage to and property seal threads apply Teflon tape to male threads only Using joint compounds or cement can obstruct the pressure

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