AAON RQ-006 - Manual (Page 67)

67
Rinse - It is highly recommended that a hose
be used, but 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.
Field installed coil coatings are not
recommended with microchannel coils.
Supply Fan
Factory bLubrication
Note: Bearing lubrication only applies to
belt driven fan motors such as the energy
recovery wheel power exhaust fan motor.
All original fan motors and bearings are
furnished with factory lubrication. Some
applications will require that bearings be re-
lubricated periodically. The schedule will
depend on the operating duty, temperature
variations or other severe atmospheric
conditions.
Bearings should be re-lubricated when at
normal operating temperatures, but not
running. Rotate the fan shaft by hand and
add only enough grease to purge the seals.
DO NOT OVERLUBRICATE.
Recommended greases are:
SHELL OIL - DOLIUM R
CHEVRON OIL - SRI No. 2
TEXACO INC. - PREMIUM RB
Removal
Remove fan access panel on the back side of
the unit. Panel is attached with eight 5/16”
bolts.
Electric shock hazard. Shut off all
electrical power to the unit to avoid
shock hazard or injury from rotating
parts.
WARNING
Blower wheels and bands must be
inspected for excessive dust build up
periodically and cleaned if required.
Excessive dust build up on blower
wheels may cause an unbalanced
state; leading to vibration and/or
component failure. Damages due to
excessive dust build up will not be
covered under factory warranty.
CAUTION
Do not use any detergents or coil
cleaners
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