COOK CA DWDI, Инструкция по установке, эксплуатации и обслуживанию

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9
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 belt
drive 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 belt
drive assembly.
• Bearings need lubrication or replacement.
• Fan surge or incorrect inlet or outlet 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 belt
drive assembly.
• Cooling air diverted or blocked.
• Improper inlet clearance.
• Incorrect fan RPMs.
• Incorrect voltage.
Overheated Bearings:
• Improper bearing lubrication
• Excessive belt tension.