6
MAINTENANCE
E
C
P
D
T
The R model is shown in the figures.
In the L model, the parts are mirrored.
T
P
J
K
S
P
H
J
I
I
J
K
T
S
H
FANS
Check the cleanliness of the fans when servicing the filters
and the heat recovery cell. Clean the fans as required.
You can clean the fan blades with compressed air (wear
protective goggles) or by brushing them gently. Do not re-
move or move the fan blade balancing weights.
To clean the fan:
1. Disconnect the ventilation unit from the mains
electricity supply.
2. Open the door of the Vallox ventilation unit by
undoing the finger screws.
3. Lift the door off.
CAUTION! The door is heavy.
4. Remove the extract air filter (C), the sealing strip
(E) and the heat recovery cell (D). See chapters
“Replacing the filters” and “Cleaning the heat
recovery cell”.
5. Disconnect the quick connector (H) of the supply air
fan (T) and/or the extract air fan (P) cables.
6. Push the fan cables and the rubber feed through (I)
into the fan chamber.
7. Remove the screws used to fasten the fans (J) (3
screws per fan). Undo the mounting screws (K) (3
screws per fan) of the air flow control grille of the fan
and remove the grille (S).
8. Remove the fan from the unit by pulling it forward and
by tilting it slightly backwards at the same time.
9. You can now clean the fan. You can clean the fan
blades with compressed air (wear protective goggles)
or by brushing them gently.
10. Reassemble in reverse order after cleaning. Ensure
that the rubber feed throughs set in place when
reinstalling the fan. Ensure that the air flow control
grilles are in place.
11. Close the door. Ensure that the safety switch catch of
the door is touching the safety switch.
12. Plug the ventilation unit back into the mains.
The fan has now been checked and cleaned.
