MK Plastics RKW IO&M - Manual (Page 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 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.
Parts List
Fig. 9 – RKW Fan (typical)
9