Cleaning the fans (Installer)
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 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.
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. Do not remove or move the fan blade balancing weights.
To clean the fans:
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Disconnect the ventilation unit from the mains electricity supply.
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Open door of the Vallox ventilation unit by undoing the finger screws.
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Lift the door off.
Caution
The door is heavy.
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Remove the extract air filter (C), the sealing strip (E) and the heat recovery cell (D). See the section called “Replacing the filters (User)” and the section called “Cleaning the heat recovery cell (User)”.
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Disconnect the quick connector (H) of the supply air fan (T) and/or the extract air fan (P) cables.
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Push the fan cables and the rubber feed through (I) into the fan chamber.
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Remove the wing screws used to fasten the fans (J) (3 screws per fan).
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Remove the fan from the unit by pulling it forward and by tilting it slightly backwards at the same time.
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Remove the mounting screws (4) of the air flow control grille of the supply air fan and remove the grille. You can now clean the fan. Put the control grille back in place after cleaning.
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Reassemble in reverse order after cleaning. Ensure that the rubber feed throughs set in place when reinstalling the fan.
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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.
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Plug the ventilation unit back into the mains.
The fan has now been checked and cleaned.