AAON M2-036 - Manual (Page 78)

78
Cleaning
The need for cleaning of the wheel will be
determined by the operating schedule,
climate and regular contaminants of the
conditioned space. The AAONAIRE
® Heat
Wheel is “self-cleaning” in that the smallest
particles will pass through and larger
particles will land on the wheel surface and
will then be blown clear as the wheel rotates
into the opposite direction of laminar flow.
The primary cleaning need will be to
remove oil based aerosols that have
condensed on energy transfer surfaces.
These oily films can clog micron sized pores
in the desiccant material reducing the
wheel’s efficiency. It can take several years
in a reasonably clean environment such as a
school or an office building, for measurable
efficiency loss to occur. Dirtier air, such as
that from a kitchen, industrial or machine
shop or a smoke filled room, will reduce
efficiency in a much shorter period of time.
To clean the wheel, remove the segments
from the wheel frame, and brush foreign
material from the face. Soak the segments in
a non-acid based coil cleaner, or another
alkaline detergent, and warm water.
Massaging the matrix with your hands will
increase the cleaning action. Rinse well, and
shake excess water away before reinstalling.
For applications where frequent cleaning is
required, it is advisable to keep a second set
of wheel segments on hand. While a set is
soaking, or being cleaned, the spare set can
be replaced in the wheel.
Figure 31 - Energy Recovery Wheel
Rim Diameter Seal
Bearing Access Cover
Pulley Drive Belts
Energy Recovery
Wheel with 8
Removable Segments
Capacitor
P.C.S. Motor
Outdoor Air Fresh Air Supply
Indoor Air Exhaust Air
“Pulley Side” View
Rotation
Motor Side Pulley Side