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a • • <br />Use the "Sludge Judge" to determine sludge level, if it is not clearly visible. <br />Discharge of the supernatant shall be a two person operation; each <br />equipped with a two-way radio. One person stationed in the pit, the other <br />by the treatment tank. Record the time of discharge on the log sheet. <br />If the filter press is used to dewater the sludge, record this information on <br />the log sheet. <br />Clean the filter plate gaskets and mating surfaces to ensure proper sealing <br />and to prevent leaks. <br />Push thrust member towards the head member to close the plates and make <br />room for the hydraulic cylinder. <br />Swing the hydraulic cylinder on its hinged mount, placing it down between <br />the thrust and tail member. (Be careful not to pinch your fingers between <br />the cylinder and the thrust member). <br />Make certain the pump release valve is closed by turning it clockwise (do <br />not over -tighten). <br />IMove the hydraulic pump fill cap to the "vent" position. <br />Operate the pump handle until 8,000 psi is reached. <br />NOTE: DO NOT EXCEED 10,000 psi AT ANY TIlgE! <br />Open all three valves on the drain manifold. <br />Open the inlet feed valve, then start the feed pump. <br />a <br />Start the feed pump at 30-40 psi. When the feed pump stalls, increase the <br />-9 pressure to 60 psi. when it stalls, increase the pressure to 80 psi. when it <br />a stalls, increase to 100 psi. <br />-� Continue operating the feed pump until it stalls at 100 psi. wait until there <br />is little or no filtrate discharge before turning off the feed pump. <br />Close the inlet feed valve. <br />Close the three valves on the drain manifold. <br />Connect the air line form the feed um to the air blow down. Air pressure <br />pump <br />shall be regulated to 40 psi maximum. <br />