BAC 3240C - Page 7

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5
Cleaning
• Drainthecoldwaterbasinwiththestrainerinplace.
• Openthehotwaterbasincoversandremoveanydirtordebrisfromthehotwater
basins.
• Cleanandinspectthefandeck.
• Removedirtanddebrisfromthefanguard(s).
• Inspectandcleanallspraynozzles.
• Cleanandinspectthemechanicalcomponents,suchasthefanandmotor.
• Flushthecoldwaterbasintoremoveanyaccumulateddirtanddebris.
• Remove,clean,andreplacethecoldwaterbasinstrainer.
Inspection
• Conductexternalinspectionoftheequipment.Checkforleaks,corrosion,andany
structuraldamage.
• Conductinternalinspectionoftheequipment.Checkforanythingunusualsuchas
structuralormechanicalcomponentdamage.
• Inspectpipingandconnections.
• Thoroughlyinspectthefanforanydamage.
• Verifyproperfantipclearance.RefertoFan“Inspection&Maintenance”onpage 10.
• Atseasonalstart-uporafterprolongedshutdown,checkthemotorinsulationwithan
insulationtesterpriortothemotorstart-up.
• Checkandadjustthebelttensionorcheckgeardriveoillevels.
• Checkthattheoatoperatedmake-upvalveisoperatingfreely.
Start-Up
Priortoseasonalstart-up,lubricatethemotorbaseadjustingscrew(seeFigures 4a and
4bonpage 12)andthefanshaftbearings(seepage 17).Atinitialstart-up,bearingsare
factorylubricatedpriortoshipment.However,iftheunithasbeenidleformorethanthree
months,re-lubricatethebearings(seepage 17).Fortowerswiththeoptionalgeardrive
system,refertopage 13.
• ApplyRUSTVETO
®
tosteelshafts.
• Fillthecoldwaterbasinwithfreshwatertotheoverowlevelviathemake-upvalve.
• Setthemake-upvalveoatsothewatershutsoffattheoperatinglevel(seeTable 1,
page 9).
• ForunitswiththeoptionalEASYCONNECT
®
PipingArrangement,verifythedrainplug
isinstalled.
• Checkthattheoat-operatedmake-upvalveisoperatingfreely.Closelymonitorthe
waterlevelandadjustasnecessaryduringtherst24hoursofoperation.
• Forthetopinletsonly,adjusttheowbalancingvalvestoequalizeowtothehot
waterbasin(s).ThisvalvemaybeprovidedbyothersoroptionallysuppliedbyBAC.
• Series3000CoolingTowersequippedwiththeoptionalEASYCONNECT
®
Piping
Arrangementdonotrequirebalancingtheowtothehotwaterbasins.
• Formulticellarrangements,balancetheowbetweenthecellstoobtainevenwater
distribution.
Unit Operation and
Storage
Start-Up Procedure
General
Cleaning
Inspection
Start-Up
ATTENTION: Check to ensure the
controls for the fan motor are set
to allow a maximum of six on-off
cycles per hour to prevent motor
overload.