AAON RN Series Installation Operation & Maintenance page 82

seal may cause efficiency deterioration,
mixing of an air flows and unwanted leakages
in the system, especially in environments
with hygienic requirements.
82
Aluminum Wheel Brush Plate
Brushes are located on both upper sides of the
profiles. Inspect their condition and whether
they adhere to the surface of the wheel
matrix. Over time, the brushes may lose their
cleaning properties and it will be necessary to
replace them or simply change their position
on the profile. In order to adjust their position
unscrew them and place properly.
Aluminum Wheel Purge Sector
Purge sectors are maintenance-free but their
condition, rigidness and cleanliness must be
checked every year. Pay attention to the
distance of the sector against the recovery
wheel matrix. Use compressed air to clean, if
required.
Aluminum Wheel Drive Components
Drive belt requires periodic inspections. Due
to material property, belt may stretch,
therefore it may require user to increase the
tension, upon inspection.
Belt tension must be checked after the first 24
hours of operation and at least once per year.
If segmented drive belt becomes too loose it
is necessary to pull out few segment modules
(Fig. 10) of the belt and shorten the overall
length to desired amount in order to achieve
optimal tension.
Correct tension should prevent ability to
insert anything underneath the belt on the
entire length between the belt and the wheel.
Belt must not slip.
Annually inspect the visual condition of the
belt all along the wheel. Be sure that belt does