Specifications

16
Pro-Series
Maintenance
Service
The Pro-Series module has a large access panel on the
front of the unit. All maintenance can be performed
through this panel. The unit should be installed with clear-
ance in front of the unit at least equal to the unit depth to
assure adequate access.
•All key components including fans and wheel
cassette are removable through the service panel.
•The rotor is supported by permanently
lubricated wheel bearings for minimal
maintenance and long life.
•Electrical panels utilize breakers to eliminate the
need for fuses (Pro-20 thru Pro-90 only).
•Fluted media structure provides for laminar flow
through the wheel thereby avoiding media
plugging due to dust and debris.
•Intake hood/filter limits snow and rain from
entering the unit.
Filters – The Pro-Series utilizes one-inch deep indus-
trial grade aluminum mesh filters. The filters can be re-
moved and washed. (See Figure 11.) We suggest that the
filters be washed or replaced a minimum of once every
four months. Replacement filters are readily available
through ERV Systems, locally through HVAC supply dis-
tributors or McMaster-Carr.
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e 11. Replacing the return air filter.
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Seals – Surrounding the rim of the wheel is a brush
seal. Do not tamper with this seal. No maintenance of the
seal is required.
Media – For normal inspection and maintenance, the
wheel cassette may be pulled out (like a drawer) of the
metal enclosure of the unit. (See Figure 12.)
Because ERV Systems’ heat wheels use laminar flow
technology to resist plugging and the accumulation of
dust particles, cleaning is usually not necessary. Constant
back-flushing occurs due to incoming and outgoing air
streams that move through media flutes to keep them
clean. As the media moves constantly from one airstream
to the other, most dirt is blown away. Some applications
may require occasional rotor cleaning; those receiving a great
particle load, for example. Under these circumstances, the
media may be cleaned with a vacuum, pressurized air or
hot water. However, detergents or solvents are not recom-
mended. They may degrade the materials used to bind the
desiccant to the aluminum surface in the media.
Figure 12.Figure 12.
Figure 12.Figure 12.
Figure 12. All key components including fans and wheel
cassette are removable through the service panel.
Belts – The wheel drive system utilizes a PowerTwist
®
Plus™ belt. Periodic adjustment of the belt will be neces-
sary. We suggest the belt be checked for sufficient tension at
a minimum of once every six months. Take care to follow
the directions on the following pages.
Figure 13.Figure 13.
Figure 13.Figure 13.
Figure 13. Prior to sliding out the wheel cassette the
wheel motor quick release must be disconnected and
the rotation detector sensor must be unmounted.
Wheel motor quick release disconnect
Rotation detector
sensor must be
removed from its
holder prior to
sliding the wheel
cassette out!