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L8000013 –
Maintenance instructions for Duco Ventilation systems
F. Ventilation ducts
F.1 Maintenance frequency
• Your ventilation ducts need to be cleaned by an accredited installer�
• The contamination of the existing ventilation ducts can sometimes take on serious forms� It is therefore necessary to
clean the ducts on a regular basis, approximately once every 6 years� This can of course differ from situation to situation,
depending on the extent of fouling�
G. Control components
G.1 Maintenance frequency
• Operating and control components require no maintenance during their service life� However, operation may be impaired
by air slot fouling� Therefore, as a resident, regularly remove the dust from the casing with a dry duster or with a vacuum
cleaner if necessary�
• DUCO recommends a 3-yearly maintenance of its ventilation system control components by an accredited installer�
H. Kitchen Box
As a resident, you need to carry out the inspection and cleaning yourself�
H.1 Maintenance frequency
Check the Kitchen Box (and valves) regularly (approximately once every 2 months) for fouling�
H.2 How to clean
• Remove the inspection hatch by hand�
• Clean the removable inspection hatch with a vacuum cleaner and then with a damp cloth (soap and water (e�g� a gener-
al-purpose cleaner))�
• Clean the Kitchen Box with a damp cloth as soon as you notice any fouling� Attention: the IAV valve is a 24 V fed item�
• Take care not to change the setting and position of the valve control mechanism and the throttle valve� If more than one
valve has been mounted on the Kitchen Box , make sure that the valves are not interchanged and that they are therefore
placed back in the original ventilation opening in the Kitchen Box� All this may affect the flow rate and the proper func-
tioning of the ventilation system�
• Fouling on the inside, including on the throttle valve of the Kitchen Box, is best removed by sucking out or cleaning using
a vacuum cleaner, brush or (damp) cloth� Carefully check also for fouling that may have accumulated in the corners� If
so, remove it as well�
• The inside of the duct can be cleaned with a vacuum cleaner�
• Put the removable inspection hatch back onto the Kitchen Box�
