What are the best low cost energy saving measures for motors?

Switching a motor system off using simple controls when not needed gives the most rapid savings, and are often simple to identify and install.  Examples are:

  • Timeswitches to match HVAC operation to the occupancy times.
  • Load sensors on escalators to switch off when no passengers are detected.
  • Humiditystats on kitchen extract fans to switch off when the humidity has fallen to an acceptable level.
  • Hookswitch for welding torch holder so that the welding booth fan only comes on when the welding torch is lifted for use.

In addition, periodically removing dirt from the inlet fan and the motor body is recommended in order to reduce motor temperature and hence losses.