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MAINTENANCE INSTRUCTIONS
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 or by brushing
them gently. Do not remove or move the fan blade balancing
weights.
WARNING
The fans are extremely sensitive to external shocks, and to
minimize risk of damage to them It is recommended that the
fans be cleaned in place, i.e. without attempting to remove
them.
CLEANING THE SUPPLY AIR FAN
NOTE
Remove the fan beds and the bypass duct
carefully in accordance with the below instructions
to prevent damage. The small size of the unit
restricts the space available for servicing.
REMOVING AND CLEANING THE SUPPLY
AIR FAN
This section describes how to remove the supply air fan
of the right handed unit. The steps are mirrored for the left
handed unit.
To remove and clean the supply air fan:
1.
Disconnect the ventilation unit from the mains
electricity supply.
2.
Turn the latch to open the door of the ventilation unit.
3.
Lift the door off.
4.
Remove the extract air filter (C), the cell top bracket (E)
and the heat recovery cell (D), as described in sections
"Filters" and "Heat recovery cell".
5.
Remove the mounting screws of the fan bed (2).
6.
Pull the bypass duct/filter stand package out of the unit
and turn to the right.
7.
Remove the cable connector (black) of the fan and
move the supply air fan slightly to the right.
8.
Remove the post heating radiator connector. The post
heating radiator connector can be removed once the
supply air fan has been moved slightly to the right.
9.
Tilt the supply air fan to the right and push the
connectors out of the way. Turn the fan 90° and tilt it
forward to pull it out of the unit.
10. The fan has now been removed for cleaning.
11. To reassemble the ventilation unit, follow the above
steps in reverse order.
12. Close the door and plug the unit back into the mains.
13. The fan has now been checked and cleaned.
(Integral CO
NOTE
Install the fan beds in a reverse order.
39
© Airflow • We reserve the right to make changes without prior notice
DV50 DV80
Sensor)
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