Corrosion And Treatments - BAC PCT Series Operation & Maintenance Manual

BAC products are constructed of corrosion-resistant materials.
Materials listed below are used in the equipment construction:
1. Galvanised Steel Components: Inspect the galvanised steel
components for blemishes or corrosion. Wire brush and recoat
the affected areas with a cold galvanising compound such as
Zinc Rich Compound (ZRC).
2. Stainless Steel Components: Inspect stainless steel components
for signs of blemishes or corrosion. Clean with stainless steel
wool as necessary. If more extensive corrosion is prevalent,
contact your local BAC Representative.
3. Fibreglass Reinforced Polyester (FRP) Components: FRP
components should be inspected for accumulation of dirt
and cleaned with soap and water as necessary. Also, FRP
components should be inspected for any penetration of gel coat
or UV veil. Such penetrations should be repaired immediately.

Corrosion and Treatments

1. Corrosion – Red rust on steel components and "white rust" on
galvanised surfaces will affect the longevity of the unit.
2. Scale formation – Scale not only reduces heat transfer and
system efficiency, but also may lead to under deposit corrosion.
3. Biological Fouling – Slime and algae formations may reduce
heat transfer, promote corrosion, and harbour pathogens such as
Legionella.
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.
Corrosion and Scale Control
Corrosion and Treatments
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