Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Fans - Troubleshooting

Guide to troubleshooting fan problems.

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 same direction as the arrows on the motor or belt drive assembly

Low Capacity or Pressure

  • Poor fan inlet conditions - there should be a straight clear duct at the inlet
  • Incorrect direction of rotation - make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly
  • Improper wheel alignment

Overheated Motor

  • Motor improperly wired
  • Cooling air diverted or blocked
  • Improper inlet clearance
  • Incorrect fan RPM
  • Incorrect direction of rotation - make sure the fan rotates in same direction as the arrows on the motor or belt drive assembly
  • Incorrect voltage

Overheated Bearings

  • Improper bearing lubrication
  • Excessive belt tension

Related Topics

  • Ventilation Systems

    Design of systems for ventilation and air handling - air change rates, ducts and pressure drops, charts and diagrams and more.

Related Documents

Search

Search is the most efficient way to navigate the Engineering ToolBox.

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with older versions of the amazing SketchUp Make and the newer "up to date" SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp Make/Pro from the Extension Warehouse !

Translate this Page

Translate this page to Your Own Language .

About the Engineering ToolBox!

Privacy Policy

We don't collect information from our users. More about

We use a third-party to provide monetization technologies for our site. You can review their privacy and cookie policy here.

You can change your privacy settings by clicking the following button: .

Citation

This page can be cited as

  • The Engineering ToolBox (2003). Fans - Troubleshooting. [online] Available at: https://www.engineeringtoolbox.com/fan-problems-d_243.html [Accessed Day Month Year].

Modify the access date according your visit.

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Unit Converter

















































5.16.12

.