Cleaning the extract air fan

To clean the extract air fan:

  1. Disconnect the ventilation unit from the mains electricity supply.
  2. Remove the cover hatch of the supply air filter and unscrew the four screws on the door to open the door of the Vallox ventilation unit.
  3. Lift the door off.
    CAUTION:
    The door is heavy.
  4. Disconnect the fan cable. The mounting flange of the extract air fan is mounted on the ceiling of the unit on the side of the unit’s rear door with screws and bolts (R-model). Unscrew the screws (G) using a long ø 8 box key. In the R-model, the cell must be removed during fan maintenance. Lower the fan flange downwards until you can detach the flange.
  5. On the front door side (R model), the fan is attached to a mount (H). Move the fan towards the rear door (R model) until the fan detaches from the unit’s ceiling completely.
  6. Unscrew the four mounting screws (M) to remove the fan’s air controller (I). You can clean the fan blades with compressed air (wear protective goggles) or by brushing them gently. Do not remove or move the fan blade balancing weights.

The extract air fan has now been checked and cleaned.