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Maintenance
Matrix
To secure the function and performance,
the face of the rotor has to be inspected
regularly for dust and dirt. In most cases,
the self-cleaning due to counter flow and
rotation of the matrix makes manual
cleaning unneeded. If the self-cleaning is
insufficient dirt or/and dust can appear in
the matrix. Depending on the degree of
soiling it is recommended to use following
cleaning:
1. For only a small amount of easily
removable dirt, Heatex
recommends to use a vacuum
cleaner.
2. For heavier dirt it is also possible to
use compressed air but with
caution.
3. Firmly attached dirt in the rotor is
easiest removed by using hot water
and a mild detergent.
The mild detergent may be
removed with high-pressure water
cleaner with the nozzle placed 50-
100 mm from the matrix.
4. If required, Heatex recommends
disinfection with the substance
known as LIV +45.
Hybrid/Adsorption material
The adsorption material is aluminum
coated with a silica gel based coating.
There is a small amount of surplus material
that might leave the matrix during the first
time of usage. This will NOT affect the
hygroscopic properties. The excess powder
is harmless and easy to remove using a
vacuum cleaner.
The hybrid wheel properties are obtained
by a combination of a flat strip of
adsorption material consisting of silica gel
coated aluminum and a corrugated
aluminum strip, which result in a moisture
transfer capacity in between that of an
aluminum matrix and an adsorption matrix.
Just as for the adsorption wheel, a small
amount of surplus material may leave the
matrix during the first time of usage.
Powerbelt
The Powerbelt is subject to natural
stretching which may require shortening of
the belt. Tension of the belt must be
checked after the first 24-48 hours in
operation to secure the rotational function
of the wheel.
The belt is made of links that can easily be
added or removed without any tools. By
just twisting the belt, it is possible to open
it and remove links to shorten the belt until
correct length and belt tension is obtained.
Belt tension should be 1-2% (i.e. belt
length 1-2% shorter than travelled length).
For Powerbelt remove one link per meter
belt to get correct tension.
Round belt
In addition, the round belt may need
adjustment. When delivered from factory
the belt is welded together. If adjustment is
needed the belt must be cut, shortened and
joined together again with a special joining
pin. Belt tension should be 6-8%.
Brush sealants
Tightness between brush sealants and
casing has to be checked during inspection.
The brush sealants are easily adjusted by
unscrewing the screws and moving the
brush sealant into the right position.
