Fan Problems
|
Fan Housing, Blade Clearance Problem |
blade rate = X times No. of blades |
radial, axial, tangential |
steady |
narrow band |
Sometimes blade rate harmonics present |
|
Fan Imbalance
|
1X |
Radial, tangential |
steady |
narrow band |
|
|
Fan Pitch Problem
|
1X |
axial |
steady |
narrow band |
|
|
Uneven Air Velocity
|
blade rate |
radial, tangential |
steady |
narrow band |
|
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