BAC 3985C - Corrosion Protection; Water Treatment

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NOTE: Since the quality of the
ambient air and make-up water
varies significantly from job
site to job site, BAC strongly
recommends obtaining the services
of a competent water treatment
specialist prior to the initial
start-up of the evaporative cooling
equipment. Additionally, to protect
against the risk of Legionella
contamination, never operate
the cooling equipment without
adequate biological control.
BACproductsareconstructedofcorrosion-resistantmaterials.Thellismadeofapolyvinyl
chloride(PVC),whichrequiresnoprotectionagainstrot,decay,rustorbiologicalattack.
Othermaterialslistedbelowareusedintheequipmentconstruction:
• Galvanized Steel Components:Inspectthegalvanizedsteelcomponentsforblemishes
orcorrosion.Wirebrushandrecoattheaffectedareaswithacoldgalvanizingcompound
suchaszincrichcompound(ZRC).
• Thermosetting Hybrid Polymer Components:Inspectthegalvanizedsteelcomponents
protectedwiththethermosettinghybridpolymerforscratches,scrapes,orblemishes.
TocosmeticallytouchuptheseareaswithcolormatchedpaintuseBACPart#160133
availablefromyourlocalBACRepresentative.
• Stainless Steel Components:Inspectstainlesssteelcomponentsforsignsofblemishes
orcorrosion.See“LongTermCareofStainlessSteel”on page 25forcleaningandcare
instructions.
• Fiberglass Reinforced Polyester (FRP) Components: Series3000CoolingTowers
areprovidedwithFRPcasingpanelsasstandard.Inspectthecasingpanelsfor
accumulationofdirtandcleanthemwithsoapandwaterasnecessary.
• TriArmor
®
Corrosion Protection System:Inspectcomponentsprotectedwiththe
TriArmor
®
CorrosionProtectionSystemforsignsofdeepscratchesorblemishes,
especiallyinareaswitheldpenetrations.Touchtheseupwith3M™Windo-Weld™
SuperFastUrethanewhichisavailablethroughyourlocalBACRepresentative(BAC
Part#RK1015).
• Pultruded Fiberglass Reinforced Polyester (PFRP) Components: Series3000Cooling
TowersareoptionallyprovidedwithPFRPhotwaterbasins.Inspectthebasinpanels
foraccumulationofdirtandcleanthemwithsoapandwaterasnecessary.
Water Treatment
Aproperwatertreatmentprogram,administeredunderthesupervisionofacompetentwater
treatmentspecialist,isanessentialpartofroutinemaintenancetoensurethesafeoperation
andlongevityofevaporativecoolingequipment,aswellasothersystemcomponents.
Inevaporativecoolingproducts,coolingisaccomplishedbyevaporatingasmallportionof
therecirculatingwaterasitowsthroughtheunit.Asthewaterevaporates,thedissolved
solids,originallypresentinthewater,remainbehindandifnotcontrolled,theconcentration
ofdissolvedsolidswillincreaserapidly.Thiscanleadtocorrosion,scale,orbiological
foulingwhichmaynegativelyaffectheattransferaswellasthelongevityofsystem
components.Awatertreatmentprogrammustcontrolthefollowingsituations:
ATTENTION: Neglected damaged
areas on the Whisper Quiet Fan can
result in the attack of the glass-
fiber layers (a process commonly
known as fiberbloom) because of
moisture entering through these
spots.
SERIES 3000 COOLING TOWER
Corrosion Protection
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