Common Faults and Solutions for Five Types of Fiberglass Fans

Common Faults and Solutions for Five Types of Fiberglass Fans

1. Inadequate Air Volume

   1. Valves in the pipeline are not fully opened.
   2. The suction pipe is too small, or the fan's inlet is not equipped with an adapter.
   3. Loose belts.
   4. Low voltage or reverse connection of power supply.
   5. Suction pipe is too long, with many bends, or the fan's air volume is too small for the application.
   6. Excessive oil contamination on the impeller.
   7. Air leakage at the connection of ducts.

   Solution:
   1. Open the valves.
   2. Replace the suction pipe and install an adapter.
   3. Adjust the center distance of the pulleys and tighten the belts.
   4. Check the power supply and correct any phase reversal.
   5. Replace the fan with a larger air volume.
   6. Clean the impeller.
   7. Seal the joints with tape or glass glue.

2. Excessive Fan Vibration

   1. Deformation or imbalance of the impeller.
   2. Severe wear of bearings, with excessive deviation of impeller concentricity.
   3. Loose foundation bolts causing resonance.
   4. Loose positioning bolts or pulley bolts of the impeller.

   Solution:
   1. Replace the impeller.
   2. Replace the bearings and adjust concentricity.
   3. Tighten the foundation bolts.
   4. Tighten the positioning bolts or pulley bolts.

3. Excessive Motor Temperature

   1. The fan transports gas with high density, increasing pressure and causing motor overload.
   2. Input voltage is too high or too low.
   3. Excessive flow rate or high negative pressure.
   4. Wire cross-section of the power supply line is too small.

   Solution:
   1. Increase the motor power.
   2. Install overload protection devices.
   3. Redesign and install ductwork.
   4. Replace the power supply line wires.

4. Excessive Bearing Temperature

   1. Lubricating grease deteriorated or insufficient.
   2. Eccentricity between shaft and bearing, or skewed installation.
   3. Severe bearing wear.

   Solution:
   1. Clean the bearings and replace the grease.
   2. Adjust the bearing to improve concentricity.
   3. Replace the bearings.

5. Belt Jumping and Slipping

   1. Belt is too loose.
   2. Pulleys are not aligned on the same straight line.

   Solution:
   1. Adjust the distance between pulleys to tighten the belt.
   2. Align the pulleys to be on the same straight line.