MK Plastics KVC IO&M - Manual (Page 12)

M.K.Plastics Corp. Montréal, Québec www.mkplastics.com 12
Troubleshooting
Problem and Potential Cause
Low Capacity or Pressure
• Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor
or drive belt assembly.
• Poor fan inlet conditions. There should be a straight clear duct at the inlet.
• Improper wheel alignment.
Excessive Vibration and Noise
• Damaged or unbalanced wheel.
• Belts too loose; worn or oily belts.
• Speed too high.
• Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor
or drive belt assembly.
• Bearings need lubrication or replacement.
• Fan surge or incorrect inlet condition.
Overheated Motor
• Motor improperly wired.
• Incorrect direction of rotation. Make sure the fan rotates in same direction as the arrows on the motor
or drive belt assembly.
• Cooling air diverted or blocked.
• Improper inlet clearance.
• Incorrect fan RPM.
• Incorrect voltage.
Overheated Bearings
• Improper bearing lubrication.
• Excessive belt tension.