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CI01Ma('arYarO�Mn <br /> WWI'(l4aar0l 01"'.1lny Yrav#dur#(GOY) <br /> Nor Mo.j RY.000,W W'091 <br /> N#rbloai I <br /> Ilea 01"0009#1 My 21.2001 <br /> Ya/a I of 2 <br /> STARTUP PROCEDURE, all s stein startups utter overnight or weekend shutdowym <br /> 7 he following procedure is to be followed�[j!_Ly Y <br /> I. Open all pump discharge valves that are typically cloned Mshutdown MAHASI feed Kt chellticul pumps). <br /> 2. "Turn all chemical pumps to AUTO at control panel or PLC, Adjust pump scttingll to proper dosagew <br /> 3. Set DAF/ASII feed pump now rate in PLC.(if applicahlc)and turn pump to AU'T'O(control panel or Pl,C). <br /> 4. Turn the sludge transfer pump to AUTO position at control panel or PLC. <br /> 5. Check calibration flow rate for all chemical feed pumps(drawdown tests per chemical vendor SOILS). <br /> 6. Purge bottom sludge from DAF/ASII approximately 30 minutes after startup. <br /> SHUTDOWN PROCEDURE <br /> For some systems, at a preset low-level in the equalization tank, DAF/AS11 feed and chemical pumps turn 01'F <br /> automatically (normal shutdown). These pumps can also be turned OFF manually fi)r overnight/weekend <br /> shutdown per the following procedure: <br /> I. Check water level in equalization tank(should be at low level sctpoint for shutdown). <br /> 2. Tum the DAF/ASH feed and all chemical pumps to OFF at control panel or PLC. <br /> 3. Tum the equalization tank mixing system OFF at control panel or PLC. (can be left ON if needed). <br /> 4. Tum chemical mix tank mixers OFF at control panel or PLC. <br /> 5. No sooner than 30 minutes after shutdown,turn OFF recirculation pump(DAF only), solids skimmer, and <br /> sludge transfer pump to OFF at control panel or PLC.LEAVE THI::SE ON AUTO DURING SHORT PF.R/ODS <br /> OF DAF/A.SH.SHUTDOWN(<4 HRS) THROUGHOUT THE PROCESSING DA Y <br /> 6. Close DAF/ASH feed pump and all chemical metering pump discharge valves. <br /> 7. Purge bottom sludge from DAF/ASH after both normal and overnight shutdowns. <br /> ANY SOLIDS LEFT IN THE SYSTEM WILL CAUSE f/EA VY CARRYOVER FOR UP TO/HR AFTER STARTUP!! <br /> WEEKLY SHUTDOWN PROCEDURE <br /> The following procedure is to be followed when the system is to be shut down over a weekend: <br /> 1. Drain the DAF/ASH and pipe flocculator weekly and wash out all solids. If possible, drain water to the <br /> clean pit and pump solids to the sludge tank. <br />