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Custom Fire Apparatus, Inc. <br />Operation of the custom chassis supplied cooling system heat exchanger is to be controlled from the <br />pump control panel and labeled to identify its operation. Discharge feed and suction return piping <br />between the fire pump and heat exchanger are to be high pressure lines with copper fittings. The piping is <br />to be installed so as to drain back (down) to the fire pump, without low points, when pump master drain <br />is "open", in order to prevent freezing. Pressure line (from pump discharge) is to be gated, with the valve <br />control located on the pump operator's control panel, with instructional nameplate. <br />INTAKE RELIEF VALVE, 2.5" BRONZE <br />An Elkhart bronze pump suction intake relief valve shall be furnished, installed inside pump <br />compartment, flange bolted or threaded to suction cavity of the fire pump. Valve to be of the pre-set (to <br />125 PSI) adjustable bypass design, to dump below the vehicle excessive inlet water pressure. Relief valve <br />to be accessible for future adjustment of bypass pressure. <br />INTAKE RELIEF VALVE, WITH DISCHARGE OUTLET HOSE <br />The specified fire pump suction manifold Intake Relief Valve's outlet is to terminate with a 2.5" i.d. <br />flexible hose, outlet located at side of apparatus, away from the fire pump operator's location. <br />HEAT ENCLOSURE, STAINLESS STEEL <br />A removable heater casing is to be furnished, completely enclosing the underside of the fire pump <br />compartment module. Heater casing side and end panels are to be fabricated entirely of type 304 brushed <br />finish stainless steel, bolted to and easily removable from the bottom perimeter of the pump module. So <br />as to allow maximum ground clearance, the heater casing shall of the minimum depth required to enclose <br />the pump transmission, horizontal engine exhaust system, and all pump accessories. Two (2) individual <br />stainless steel slide -out bottom panels are to be furnished, criss-cross reinforced with drain holes and <br />'/a -turn butterfly clamp latch, removal of which allows for inspection of and access to the fire pump and <br />chassis components, NOTE: A center bottom slide -out panel brace shall be furnished, off -set to one side <br />so as to not obstruct the pump transmission lubricating fluid drain. <br />ANODE, PUMP SUCTION MANIFOLD <br />One (1) sacrificial zinc anode shall be furnished in the water pump inlet manifold, to protect the pump <br />from corrosion. <br />PUMP SUCTION INLETS <br />Following specified pump manifold inlets shall be equipped with zinc die cast screens so as to provide <br />cathode protection for pump waterways. <br />07/26/22 <br />-91- <br />