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top of the probe by a synthetic rubber compression fitting. The Level control shall <br /> have 0 year warranty. <br /> Simplex unit ' operate in the following sequence of operation; low sen s will turn <br /> pump off, high s or will turn pump on, alarm sensor will initiate a level alarm in <br /> the control panel. <br /> Duplex units will utilize the owing sequence of ope on; low sensor will turn <br /> pump(s) off,high sensor will tur e lead pump ,Alarm sensor will turn the turn the <br /> lag pump on while simultaneously im ' lizin 'gh level alarm to indicate there is a <br /> problem with a pump. A redundant hi vel alarm or low level float is also available <br /> as an option. <br /> Option B: <br /> Pumps shall u e mechanical float switches for automatic le control. Simplex units <br /> will oper on a 3 float system in the following sequence of opera ' n; pump off, pump <br /> on, ' level alarm. Duplex units will operate on a 4 float system wit e following <br /> uence of operation; pump(s) off, lead pump on,lag pump on, high leve arm. <br /> 2.09 Tank <br /> Fiberglass Tank: The Fiberglass tank shall be a wet well design with resins of a <br /> commercial grade that have been evaluated as a laminate by test or determined by <br /> previous test to be acceptable for the environment. The reinforcing material shall be of <br /> a commercial grade of glass fiber having a coupling agent which will provide a suitable <br /> bond between the glass reinforcement and the fiber. The laminate shall consist of an <br /> inner surface, an interior layer and an exterior layer of laminate body. The inner surface <br /> shall be free of cracks and crazing with a smooth finish. This may be a gel coat surface <br /> or reinforced with glass surface level. <br /> The Tank wall must be designed to withstand wall collapse based on the assumption <br /> that saturated soil exerts 120 pounds per cubic foot. The tank wall must be designed to <br /> withstand or exceed two times the actual imposed loading of any depth of basin. The <br /> depth of bury should be specified on all plans so wall thickness can be calculated and <br /> guaranteed by manufacturer. <br /> The tank bottom must be constructed suitable for the service designated by project <br /> engineer. Under total submerged conditions the center deflection of any empty tank <br /> bottom must be less than 3/8 inch as not to interfere with bottom pump mounting. <br /> Tanks deeper than 10 feet should have a steel reinforcement insert of the tank bottom <br /> The Appearance of the tank must be as free as commercially practicable from visual <br /> defects such as foreign inclusions, dry spots, air bubbles, pinholes, dimples and <br /> delamination's. <br /> —'SiaRalex tank, Model SFG2484P2. Fiberglass tank shall have dimensions mg 24" <br /> diameter th with a total volume of 164 gallons. A ' err plated, <br /> aluminum, drip proo , a hatch cover shoul manently affixed to the <br /> basin top by means of 316 Stainless he tank shall include a factory <br /> installed 1 1/" 316 stainless st arge b ' ting protruding from the outside <br /> wall of the tank. ps shall be connected to the disc . . g by means of <br /> high pre oses. The high pressure hose shall be 1 1/" and have a e ' s of 4". <br /> ose shall terminate into a factory installed knife gate valve with quick disconne <br /> 5 <br />