35
a
soft non-metallic
bristle brush may be
used. In either case, the tool must be applied
in the direction of the fins. Coil surfaces can
be easily damaged (fin edges bent over) if
the tool is applied across the fins.
Use of a water stream, such as a garden hose,
against a surface loaded coil will drive the
fibers and dirt into the coil. This will make
cleaning efforts more difficult. Surface
loaded fibers must be completely removed
prior to using low velocity clean water rinse.
A
monthly
clean
water
rinse
is
recommended for coils that are applied in
coastal or industrial environments to help to
remove chlorides, dirt, and debris. It is very
important
when
rinsing,
that
water
temperature is less than 54.4
°
C (130°F) and
pressure is less than 689.5 kpa (100 psig) to
avoid damaging the fin edges. An elevated
water temperature (not to exceed 54.4
°
C
[130°F]) will reduce surface tension,
increasing the ability to remove chlorides
and dirt.
Quarterly cleaning is essential to extend the
life of an e-coated coil and is required to
maintain coating warranty coverage.
Coil cleaning shall be part of the unit’s
regularly scheduled maintenance procedures.
Failure to clean an
e-coated coil will void the
warranty and may result in reduced
efficiency and durability.
For routine quarterly cleaning, first clean the
coil with the below approved coil cleaner.
After cleaning the coils with the approved
cleaning agent, use the approved chloride
remover to remove soluble salts and
revitalize the unit.
Recommended Coil Cleaner
The following cleaning agent, when used in
accordance
with
the
manufacturer’s
directions on the container for proper mixing
and cleaning, has been approved for use on
e-coated coils to remove mold, mildew, dust,
soot, greasy residue, lint, and other
particulate:
Enviro-Coil Cleaner: AAON PN: V82540
GulfClean ™ Coil Cleaner ; AAON PN:
G074480
Recommended Chloride Remover
GulfClean Salt Reducer™ ; AAON PN:
G074490
GulfClean Salt Reducer™ is used to remove
soluble salts from the e-coated coil, follow
the manufacturer’s instructions. This
Harsh chemicals, household bleach,
or acid cleaners should not be used to
clean outdoor or indoor e-coated coils.
These cleaners can be very difficult to
rinse out of the coil and can accelerate
corrosion and attack the E-coating. If
there is dirt below the surface of the
coil, use the recommended coil
cleaners.
High velocity water from a pressure
washer or compressed air should only
be used at a very low pressure to
prevent fin and/or coil damages. The
force of the water or air jet may bend
the fin edges and increase airside
pressure
drop.
Reduced
unit
performance
or
nuisance
unit
shutdowns may occur.
CAUTION
CAUTION
