16
| Maintenance of the unit
GB
Warning
Ensure the rotor motor is not exposed to moisture
6. Remount the heat exchanger. Don’t forget to reconnect the heat exchanger power and sensor cables.
7. Close and lock the front hatch and connect the unit to mains.
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 extract air fan is accessed by opening the front hatch. The supply air fan is accessed by opening the side hatch.
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 described below.
1. Stop the unit by disconnecting the mains.
2. Open the front hatch. See chapter 6.2.
3. Loosen the screws securing the side hatch and open it.
4. Disconnect the fan power cables. The cables are found beside the fans.
5. Loosen the screws to the brackets holding the fans (1).
6. Remove the brackets.
7. Pull the fans towards you.
8. 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.
9. Remount the fans.
10.Remount and tighten the brackets.
11.Don’t forget to reconnect the fan power cables.
12.Close and lock the front and side hatch and connect the unit to mains.
211478 | A002
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