GB
Maintenance of the unit |
15
Even if the required maintenance is carried out, dust will build up in the exchanger block. It is therefore of vital impor-
tance for the upkeep of a high efficiency that the exchanger block is removed from the unit and cleaned periodically as
illustrated below. Clean the heat exchanger at least every 3 years or when required.
1. Disconnect the rotor power supply and the rotor sensor. The cables are found beside the rotor at the back.
2. Pull out the rotor towards you. Some force may be needed.
3. Clean the rotor.
Wash in hot soapy water. Do not use detergent containing ammonia. Rinse using, for instance, a shower handle or
carefully with compressed air.
Warning
Ensure the rotor motor is not exposed to moisture
4. Remount the rotor. Don’t forget to reconnect the rotor power and sensor cables.
Fig. 3 Heat exchanger
6.6 Cleaning the fans
Danger
• Make sure that the Mains supply to the unit is disconnected before performing any maintenance or
electrical work!
The motor bearings are life time lubricated and maintenance free.
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 cleaned as illustrated in below procedure.
1. Disconnect the fan power cables. The cables are found beside the fan at the back.
2. Pull out the fans towards you. Some force may be needed.
3. Clean the fans with a cloth or a soft brush. Do not use water. White spirit can be used to remove obstinate deposits.
Allow the fans to dry properly before remounting.
4. Remount the fans. Don’t forget to reconnect the fan power cables.
211474 | A003
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