16
| Maintenance of the unit
GB
Fig. 6 Removing and cleaning the heat exchanger
Caution
Risk of personal injury! The heat exchanger weighs about 25 kg. There is a risk that the heat exchanger falls
out of the unit.
Make sure that small children are not beneath the unit when the heat exchanger is removed!
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
described below. Clean the heat exchanger at least every 3 years or when required.
1. Stop the unit by disconnecting the mains.
2. Remove the front hatch and open side doors. See chapter 6.2 and chapter 6.3.
3. Pull out the heat exchanger half way through to access the cabling. Some force may be needed. Use handles.
4. Disconnect the heat exchanger power supply and the rotor sensor. Both cables are found beside the heat exchanger.
5. Pull out the heat exchanger. Some force may be needed.
Caution
Risk of personal injury! The heat exchanger weighs about 25 kg. There is a risk that the heat exchanger
falls out of the unit.
6. 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.
Important
Ensure the rotor motor is not exposed to moisture
7. Remount the heat exchanger. Don’t forget to reconnect the heat exchanger power and sensor cables.
8. Close and lock the front hatch and connect the unit to mains.
6.6 Checking and cleaning fans
Danger
Make sure that the Mains supply to the unit is disconnected before performing any maintenance or
electrical work!
211481 | A003
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