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VR 300 ECV/B Operation and maintenance instructions
206788 (12-02-2010)
6 Systemair AB
GB
2. Checking the heat exchanger/Rotor belt
Even if the required maintenance in point 1 is carried out, dust will build up in the exchanger block. It
is therefore of vital importance for the upkeep of a high efficiency that the exchanger block is re-
moved from the unit and cleaned periodically (every 3 years) (Fig.4). Wash in hot soapy water. Do
not use detergent containing ammonia.
The belt that drives the exchanger rotor should be controlled on a regular basis. It is recommended
to do this whenever it is time to change filters. Check that the belt is whole and without any visible
damage and that it is tight enough to move the heat exchanger wheel (check by turning the
exchanger wheel by hand and see if the belt pulley on the rotor motor moves as well. If the belt
needs to be replaced contact your installer.
Fig.4
Note! Ensure that the rotor motor is not exposed to moisture.
3. Checking the fans
Even if the required maintenance, such as changing of filters is carried out, dust and grease may
slowly build up inside the fans. This will reduce the efficiency.
The fans may be removed and cleaned with a cloth or a soft brush (every 3 years) (Fig.5). The fans
can be removed after unplugging the fast couplings for the electrical wiring. Do not use water. White
spirit can be used to remove obstinate settlements. Allow to dry properly before remounting.
Fig.5
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