AAON V3-A Installation, Operation & Maintenance Instructions Manual page 68

For routine quarterly cleaning, first clean the
coil with the below
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 – Step 1
GulfCoatTM Coil Cleaner, 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,
particulate. Never use any cleaners that are
not approved.
Recommended Chloride Remover – Step 2
CHLOR*RID® Concentrate, assuming it
is used in accordance with the manufacturer's
directions on the container for proper mixing,
has been approved for use on E-coated coils
to remove chlorides/salts & sulfates. Never
use any chloride removers that are not
approved.
Warranty Protection – Step 1
Complete the coil cleaning following these
steps:
1. Ensure that the power to the unit is off
and locked out.
2. Clean the area around the unit if
needed to ensure leaves, grass or
loose debris will not be blown into the
coil.
3. Remove panels or tops as required
gaining access to the coil(s) to be
cleaned.
4. Using a pump up sprayer, fill to the
appropriate level with potable water
and add the correct amount of
approved cleaner as per manufacture
instructions leaving room for the
pump plunger to be reinserted.
NOTE: Coils should always be cleaned /
back flushed, opposite of airflow to prevent
impacting the dirt into the coil.
68
approved coil
lint and other
5. If the coils have heavy dirt, fibers,
grass, leaves etc. on the interior or
exterior face areas, a vacuum and
brush should be used to remove those
surface contaminants
applying cleaner. The interior floor,
drain tray or pan areas should also be
vacuumed.
6. Apply the mixed cleaner to coil
surfaces using a pressurized pump up
sprayer maintaining a good rate of
pressure and at a medium size nozzle
spray, (not a solid stream and not a
wide fan but somewhere in the
middle). Work in sections/panels
ensuring that all areas are covered and
kept wetted.
7. Apply the cleaner to unit interior air
exiting side coil surfaces first. Work
in sections/panels moving side to side
and from top to bottom.
8. Generously soak coils by spraying
cleaner directly on and into the fin
pack section to be cleaned and allow
the cleaning solution to soak for 5 to
10 minutes.
9. Using pressurized potable water,
(<100 psi), rinse the coils and
continue to always
sections/panels. Start at the top of the
coil and slowly move vertically
downward to the bottom. Then,
staying in the same vertical area,
slowly move back up to the top where
you started. Now move over slightly
overlapping the area just completed
and repeat above. Continue until all
coil areas on the inside of the unit
have been rinsed.
10. Complete steps 5-9 for the exterior air
entering side of the coils.
11. Final rinse – Now complete a quick
rinse of both sides of the coil
including the headers, piping, u-
bends and hairpins.
12. If the coil has a drain pan or unit floor
that is holding rinse water or cleaner,
extra time and attention will need to
prior to
work in