Vallox 125E MV, Manual

Page: 14 / 24

14
CLEANING THE 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
remove or move the fan blade balancing weights.
To clean the fan:
1. Disconnect the ventilation unit from the mains electricity
supply.
2. Lift off the door cover panel. Undo the unit’s mounting
screws (4 mm hexagon).
3. Lift the door off.
CAUTION
The door is heavy.
4. Remove the filters and the heat recovery cell. See
chapters “Replacing the filters” and “Cleaning the heat
recovery cell”.
5. Remove the support plate (F) by undoing the screws (E).
6. Detach the bypass module (G) cable from the connector
(found in front of the extract fan (P)). Pull the bypass
module (G) out of the unit.
7. Remove the plastic nuts used to fasten the fans (J) (2 per
fan). Remove the two wing screws (I) of the post-heating
resistor (H) (only when changing the supply air fan) and
remove the cable of the resistor (H) from the connector.
8. Remove the fan from the unit by lowering it before
turning the fan anti-clockwise, whilst tilting it. Remove the
control grille by undoing the screws (4 pcs).
9. You can now clean the fan. Put the control grille (S) back
in place after cleaning.
10. Reassemble in reverse order after cleaning. After
reassembling the fan, ensure that the rubber feedthrough
(M) is 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.
MAINTENANCE
H
J
S
T
M
P
I