18
DV51 DV51CH
CLEANING THE FANS
Check the cleanliness of the fans when servicing the filters and
the heat recovery cell . Clean the fans as required .
Removing and cleaning the fans
To clean the fans:
1 . Disconnect the ventilation unit from the mains electricity
supply .
2 . Undo the door screws to open the door of the Adroit
ventilation unit .
3 . Lift the door off .
CAUTION
The door is heavy .
4 . If the length of the cables that are led out of the unit through
the ceiling bushing grommets (G) and connected to the
connection card (F) in the electric box prevents moving
the fan chamber sufficiently far from the ventilation unit,
disconnect the cables . Pull these cables out of the unit
through the ceiling bushing .
5 . Detach outdoor and extract air temperature sensors from the
ceiling mounts . Remove the round feedthrough rubbers (H)
from the slots on the intermediate walls of the unit by pulling .
6 . Undo the earthing screw (K) on the upper left corner of the
electric box .
7 . Release the damper motor (J) by placing an orange magnet
(I) on the magnet icon on the damper motor . Observe the
location of the magnet so that you will be able to return it to its
original location after maintenance . Remove the bar from the
joint of the damper . Turn the crank of the damper motor so
that the bar comes off from the bypass damper and turn the
damper into the cell bypass position .
8 . Pull out the upper support of the cell (E) . Lift and pull the cell
(D) out of the unit .
9 . Pull the fan chamber (K) out of the unit (contains the fans,
electric box, and the bypass duct incl . the damper motor) .
10 . The fans are mounted on the fan chamber by means of three
screws (L) . Do not undo the earthing screw at the bottom
edge on the rear wall side .
11 . Disconnect the quick connectors of the fan cable .
12 . Clean the fans . The fan can be cleaned with compressed air
(wear protective goggles) or by brushing it gently .
13 . To reassemble the ventilation unit, follow the above steps in
reverse order .
NOTE! Remember to reconnect the bar of the damper motor
into the joint of the damper and to lock the connection
with the orange magnet. Ensure that the sensors and their
feedthrough rubbers are in correct locations. Also ensure
that all the connections have been correctly implemented
and the earthing screw is in place in the left corner.
MAINTENANCE
IMPORTANT
The fans are
extremely sensitive
to external shocks . It
is recommended that
the fans be cleaned
in place, i .e . without
attempting to remove
them . Handle the fan
blades carefully .
It is recommended that
the fans be cleaned by
a professional .
D
F
I
E
J
H
G
K
K
L
K
