Microchannel Coil Cleaning - AAON RN Series Installation, Operation & Maintanance Manual

Recommended Coil Cleaner
The following cleaning agent, assuming it is
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 Concentrate, Part Number H-
EC01.
Recommended Chloride Remover
CHLOR*RID DTS™ should be used to
remove soluble salts from the e-coated coil,
but the directions must be followed closely.
This product is not intended for use as a
degreaser. Any grease or oil film should first
be removed with the approved cleaning
agent.
Remove Barrier - Soluble salts adhere
themselves to the substrate. For the effective
use of this product, the product must be able
to come in contact with the salts. These salts
may be beneath any soils, grease or dirt;
therefore, these barriers must be removed
prior to application of this product. As in all
surface preparation, the best work yields the
best results.
Apply CHLOR*RID DTS - Apply directly
onto the substrate. Sufficient product must
be applied uniformly across the substrate to
thoroughly wet out surface, with no areas
missed. This may be accomplished by use of
a pump-up sprayer or conventional spray
gun. The method does not matter, as long as
the entire area to be cleaned is wetted. After
the substrate has been thoroughly wetted,
the salts will be soluble and is now only
necessary to rinse them off.
Rinse - It is highly recommended that a hose
be used, as a pressure washer will damage
the fins. The water to be used for the rinse is
90
recommended to be of potable quality,
though a lesser quality of water may be used
if a small amount of CHLOR*RID DTS is
added. Check
International, Inc. for recommendations on
lesser quality rinse water.

Microchannel Coil Cleaning

Documented routine
microchannel coils with factory provided e-
coating is required to maintain coating
warranty coverage. See E-Coated Coil
Cleaning section.
Air-cooled heat exchangers may include
microchannel coils. Only clean water is
recommended for cleaning microchannel
coils. The water pressure used to clean
should not exceed 140 psi, from no closer
than 3 inches from the coils, and with the
water aimed perpendicular to the coils.
CAUTION
Detergents or coil cleaners are not
recommended with
condenser coils. Use pressurized
clean water, with pressure not to
exceed 140 psi. Nozzle should be 6"
and 80° to 90° from coil face. Failure
to do so could result in coil damage.
Only clean water is recommended for
cleaning microchannel coils. However, if
solutions are mandatory to clean the unit, a
cleaning solution with a pH between 5 and 9
that does not contain chlorides, sulfates,
copper, iron, nickel, or titanium is required.
Field applied coil
recommended with microchannels.
with CHLOR*RID
cleaning of
microchannel
coatings are not