Pr
o
-
C
Series
19
Maintenance
Filters
– The PRO-C utilizes one-inch deep industrial
grade aluminum mesh fi lters. The fi lters can be removed
and washed. (See Figure 13.) We suggest that the fi lters
be washed or replaced a minimum of once every four
months. Replacement fi lters are readily available through
ERV Systems, locally through HVAC supply distributors
or McMaster-Carr.
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 14.)
Because ERV Systems’ heat wheels use laminar fl ow
technology to resist plugging and the accumulation of dust
particles, cleaning is usually not necessary. Constant back-
fl ushing occurs due to incoming and outgoing airstreams
that move through media fl utes 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 recommended. They
may degrade the materials used to bind the desiccant to the
aluminum surface in the media.
Belts
– The wheel drive system utilizes a PowerTwist
®
Plus™ belt. Periodic adjustment of the belt will be necessary.
We suggest the belt be checked for suffi cient tension at a
minimum of once every six months. Take care to follow the
directions on pages 20 and 21.
Figure 11. Replacing the return air filter.
Figure 12. Prior to sliding our the wheel cassette, the wheel
motor quick release must be disconnected.
Figure 13. After disconnecting the wheel motor quick re-
lease, the upper and lower TECK screws must be removed.
Figure 14. The wheel cassette is removable through the
service door.
