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            | A few possible causes for Fan Mechanical Trouble. | 
           
          
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                  - Erection fault
 
                  - Alignment fault
 
                  - Bearing fault
 
                  - Bearing Housing fault
 
                  - Bearing setting fault
 
                  - Bend Shaft
 
                  - Looseness of other parts
 
                  - Tension
 
                  - Critical speed
 
                  - Looseness of V-belt drives
 
                  - Improper fitting of Multi Louver Damper
 
                  - Eccentricity of Pulley and coupling.
 
                  - Axial play on motor shaft
 
                  - Electrical fault of motor
 
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