08-28-2023 Council Packet - Laserfiche WebLink

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a) extreme duty seals for weather resistance b) thermo-metric indicator for motor monitoring c) A cable guide and 125 feet of 5/16" diameter galvanized cable and fairlead & safety hook assembly shall be supplied. d) Winch speed shall be constant with forward and reverse modes controlled with a push button device at the end of a twelve foot control cable which connects to the winch through a weatherproof receptacle. The winch shall be attached to the chassis with grade 8 hardware. 100178.1 - REAR RECEIVER The rear of the chassis shall be equipped with one (1) square steel tube receiver assembly for high or low angle rescue, trailer use, and winch applications. It shall be the same size as a Class III trailer hitch and shall be attached to the chassis frame assembly. The receiver shall be rated at approximately 10,000#. The rear reciever assembly shall be equipped with two (2) heavy duty rear tow loops, one (1) each side. 100576.1 - FIRE PUMP SPECIFICATIONS A Darley model number 1-1/2AGE 24 K diesel powered, centrifugal portable pump shall be provided. The high pressure, low volume, gear driven, engine mounted pump shall meet the following performance requirements: 120 GPM @ 130 PSI 75 GPM @ 220 PSI 25 GPM @ 335 PSI Pump Design Pump casing shall be made of anodized aluminum and vertically split, with a minimum tensile strength of 33,900 PSI - bronze-fitted. Pump ratio to be selected by the manufacturer's Engineering Department. Seal rings shall be renewable, double labyrinth, wrap around bronze type. Bearings are to be heavy duty, deep groove, radial-type ball bearings, oversized for long life. Bearings to be protected at all openings from road dirt and water splash with oil seals and water slingers. Mechanical Seal The pump shall be furnished with a Darley maintenance free mechanical seal. The mechanical seal shall be a non- contacting, non-wearing seal design. Seal shall be a Silicon Carbide Mechanical seals with welded springs. The stationary face of mechanical seals shall be made from Silicon Carbide, be extremely hard and of a heat dissipative material, which resists wear and dry running damage much better than conventional Ni-resist and Tungsten Carbide materials Pump Shaft Pump drive shaft shall be precision ground, heat treated alloy steel, with a 1-3/8 spline. Gears shall be helical design, and shall be precision ground for quiet operation and extended life. The pump shaft shall be splined to receive broached impeller hubs, for greater resistance to wear, torsional vibration, and torque imposed by engine, as well as ease of maintenance and repair. Pump shaft to be precision-ground 416 stainless steel. Impeller The impeller shall be a high strength bronze alloy, splined to the pump shaft for precision fit, durability, and ease of maintenance. Impeller shaft oil seals shall be constructed to be free from steel components except for the internal lip spring. The impeller shaft oil seals shall carry a lifetime warranty against damage from corrosion from water and other fire-fighting fluids. Pump Transmission The transmission case shall be cast iron aluminum with adequate oil reserve capacity to maintain low operating temperature. Pump ratio to be selected by the manufacturer's engineering department. Gears shall be helical in design and precision ground for quiet operation and extended life. Gears to be cut from high strength alloy steel and heat treated. Gear face to be minimum of 1-1/2". Chain drive and/or design requiring extra lubricating pump is not acceptable. The pump unit shall be supplied with a control panel for remote mounting, panel light, hour meter/tachometer, pressure Skeeter Brush Trucks Page 6 07/21/2023