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18
PT2
Corrosion Protection
3
NOTE:
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 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. Materials listed below
may be used in the equipment construction, depending on which optional materials of
construction were ordered:
•
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 components protected with
the thermosetting hybrid polymer for scratches, scrapes or blemishes. To touch up
these areas use a repair kit (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 21
for cleaning and
care instructions.
•
TriArmor
®
Corrosion Protection System
: Inspect components protected with the
TriArmor
®
Corrosion Protection System for signs of deep scratches or blemishes,
especially in areas with field penetrations. Touch these up with 3M™ Windo-Weld™
Super Fast Urethane which is available through your local BAC Representative (BAC
Part # RK1015).
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 flows 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, as described below.
•
Corrosion
– Red rust on steel components and white rust on galvanized surfaces may
affect the longevity of system components.