Potter WLS Tank Water Level Switch

Features NEMA 4 Suitable for use on pressure or gravity switches Mounts to wood or steel tanks Wood tanks require optional buttress adapter Product includes a 5 year warranty Model WLS Water Level Switch is a float operated device for water level in a sprinkler supply gravity or pressure tank Model WLS has a bushing with 1 1 2 American Standard Pipe for mounting in steel tanks A 1 1 2 NPT x 2 NPT adapter is available for mounting in existing 2 steel flanges An bushing adapter with a buttress thread is available for mounting wooden tanks unit is capable of detecting the level of water before a 3 7,6cm and or a 3 7,6cm fall in the water level in a pressure tank as for NFPA 72 cover is held in place with two tamper resistant screws provided require a special key for removal Specifications Range Pressure Tamper 5.56 x 3.50 x 2.56 H x 8,9cm W x 6,5cm See Fig 1 lb 1.47 Kg Cast aluminum with red powder coat Steel zinc plated or wood tanks With the optional wood adapter Stock No 5180199 sets SPDT Form C set for high One set for low 15.00 Amps at 125 250VAC Amp at 125VDC Amp at 250VDC 3 7,6cm Rise Before 3 7,6cm for indoor or outdoor use range 40 to 140 to 60 NEMA 4 rated enclosure when used proper conduit fittings PSI 12,1 BAR incorporates tamper resistant fasteners requires a special key for removal One is supplied with each device PAGE 1 OF 3 Water Level Switch5401040 REV L 11 15Potter Electric Signal Company LLC St Louis MO Phone 866 956 0988 www pottersignal comfirealarmresources com 1 ELECTRICAL CONDUIT CONNECTION STEEL 1 2 11 1 2 NPT CHG NO MSH Instructions buttress thread nut and gasket are available for use with devices on installations where the inside of the tank is accessible and it is not convenient to a flange on the tank The nut and gasket can also be used in a wood tank that is not sound enough to hold a thread see Fig 2 installation in steel gravity tanks weld a 1 1 2 NPT threaded flange 6660225 9 23cm below the required water level to receive the 1 1 2 see Fig 3 wood gravity tanks bore a 2 3 8 60mm hole in the center of a stave 9 23cm below the required water level and screw the buttress bushing 5180199 in place allowing the bushing to cut its own thread then install the WLS into the adapter see Fig 4 pressure tanks weld the 1 1 2 NPT threaded flange 6660225 into the tank at the desired water level and use both high and low signals replace an existing Potter WLS in a steel tank with a welded flange a 1 1 2 x 2 NPT bushing adapter 5020126 is available Thread the bushing adapter the 2 welded flange securely then install the WLS into the adapter The high signal is not required for gravity tanks and the WLS can be wired so that either High or Low or both switches may be used see Fig 5 CERTIFIES ALL PARTS SUPPLIED FROM THIS DRAWING HAVE BEEN PRODUCED TO SPECIFICATIONS AND VENDOR WILL BE RESPONSIBLE FOR ANY REWORK COST WHERE HAVE NOT BEEN MET ELECTRIC SIGNAL CO CONTAINED HEREIN SHALL NOT BE USED DUPLICATED OR DISCLOSED IN WHOLE PART OUTSIDE POTTER ELECTRIC INC WITHOUT WRITTEN PERMISSION OF SAME UNLESS SPECIFIED DECIMALS ANGLES DIMENSIONS FOR REFERENCE ONLY MILLIMETERS DRAWING WATER LEVEL GENERATED DRAWING NOT MANUALLY UPDATE INCH DWG NO CERTIFICATION 1 OF 1 DATA not lift or hold device by float or float rod as bending may occur or Steel Tank Installation 2 Tank Installation 3 Tank Installation 4 PAGE 2 OF 3 REV L 11 15Potter Electric Signal Company LLC St Louis MO Phone 866 956 0988 www pottersignal comWLSTank Water Level Switchfirealarmresources com Level Switch Information No 1 2 Flange Forged Steel 1 2 Buttress Nut Bronze Adapter Brass Bushing Adapter Brass 1 1 2 NPT x 2 NPT 5020126 1 2 NPT x 2 1 2 and Switch Placement 5 Device must be oriented vertically with conduit entrance bottom of water tank Plate Terminal Connections Plate Terminal 6 I N N I N 923 3 uninsulated section of a single conductor should not be looped the terminal and serve as two separate connections The wire be severed thereby providing supervision of the connection in event that the wire becomes dislodged from under the terminal PAGE 3 OF 3 REV L 11 15Potter Electric Signal Company LLC St Louis MO Phone 866 956 0988 www pottersignal comWLSTank Water Level Switchfirealarmresources com