AAON LN-140 - Manual (Page 35)

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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
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 with CHLOR*RID
International, Inc. for recommendations on
lesser quality rinse water.
Microchannel Coil Cleaning
Documented
routine cleaning of
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.
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 installed coil coatings are not
recommended with microchannels.
Service
If the unit will not operate correctly and a
service company is required, only a
company with service technicians qualified
and experienced in both refrigerant chillers
and air conditioning are permitted to service
the systems to keep warranties in effect. If
assistance is required, the service technician
must contact AAON.
Replacement Parts
Parts for AAON equipment may be obtained
from your local AAON representative.
When ordering parts reference the unit serial
number and part number.
AAON Warranty, Service and Parts
Department
2424 S. Yukon Ave.
Tulsa, OK 74107
Ph: 918-583-2266
Fax: 918-382-6364
www.aaon.com
Note: Before calling, technician should have
model and serial number of the unit
available for the service department to help
answer questions regarding the unit
Batch-loading chemicals into the unit
is NOT PERMITTED. The control
system must regulate the chemical
feed.
WARNING
Detergents or coil cleaners are not
recommended
with microchannel
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.
CAUTION