Cleaning the heat recovery cell

Warning: The safety switch automatically turns off the power when the upper door of the Vallox ventilation unit is opened. Always disconnect the Vallox ventilation unit from the mains before starting maintenance.

Check that the heat recovery cell is clean roughly once a year, or whenever the filters are being replaced. Clean by washing as required.

To check and clean the heat recovery cell:

  1. Disconnect the ventilation unit from the mains electricity supply.
  2. Lift the latch to open the door of the ventilation unit.
  3. Lift the door off.
    CAUTION: The door is heavy.
  4. Pull the G4 filters (A, C) and filter supports out of the unit.
  5. Remove the sealing strip (E) above the heat recovery cell.
  6. Remove the side sealing strip (F).
  7. Remove the F7 filter (B).
  8. Lift and pull the cell (D) out of the unit.
    Important:

    Handle the cell carefully! For example, do not lift the cell by the layers. The cell layers are very thin and easily damaged.

  9. If the cell is dirty, clean it by immersing it in warm water, to which a small amount of a mild detergent has been added.
  10. Rinse the cell clean with a water spray. Do not use a high-pressure cleaner.
  11. When all the water has drained from between the layers, reassemble the ventilation unit in the reverse order.
  12. Close the door of the unit. Ensure that the safety switch catch of the door is touching the safety switch, allowing the unit to be turned on. Achten Sie darauf, dass der Verschlusshebel des Sicherheitsschalters für die Tür den Sicherheitsschalter berührt, so dass das Lüftungsgerät eingeschaltet werden kann.
    Plug the ventilation unit back into the mains.
The heat recovery cell has now been checked and cleaned.