NCF fan
EN
Problem Cause Solution
Fluid density lower than the inten-
ded value
Check the fluid density value
Air flow greater than the intended
value
Check the resistance pressure
value of the system
Instability of air flow Check the operating field envis-
aged by the operating curve
Fluctuations in flow due to other
fans operating in parallel
Check for correct installation on
the system
Pulsating operation
Intake air turbulence created by
system near intake opening
Check minimum installation dis-
tances.
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