Naked Science Forum

General Science => General Science => Topic started by: CliffordK on 09/08/2011 19:11:02

Title: When a power tool gets hot, should you stop it, or run it slowly to cool?
Post by: CliffordK on 09/08/2011 19:11:02

When a power tool gets hot...

Is it better to let it cool down running on low speed, no load (thus using the internal fan to circulate air)?
Or is it better to shut down & let it cool down (thus not sending power through the wires, and no additional heating from resistance)?

Title: When a power tool gets hot, is it better to...?
Post by: Geezer on 10/08/2011 00:39:32

Neither  [;D]

You might be best to run it at full speed to help it cool down. That will maximize the airflow and it won't really increase the power dissipation because there is very little load on the motor.

Title: When a power tool gets hot, is it better to...?
Post by: Mazurka on 10/08/2011 10:46:05

The Geezer is right [:o] [B)] [;)]...

The cooling effect of the fan will far exceed the heating of running at full speed with no additional load