Fan Troubleshooting

Excessive Vibration and Noise
• Belts too loose (worn or oily belts)
• Speed too high
• Damaged or unbalanced wheel
• Bearings need lubrication or replacement
• Fan Surge
• Incorrect direction of rotation. Make sure the fan rotates in the right direction as per the indication of the arrows on the fan.

Over heated Motor
• Motor improperly wired
• Cooling air diverted or blocked
• Improper inlet clearance
• Incorrect fan Speed (RPM)
• Incorrect direction of rotation. Make sure the fan rotates in the right direction as per the indication of the arrows on the fan.
• Incorrect Voltage

Over Heated Bearings
• Improper bearing lubrication
• Excessive belt tension