Avionics Cooling Fan

[Releew]

Does anyone know what the thermal switch is set at to activate the Avionics Cooling Fan?  I would like to know the kick in and out temperature and if there is a way to manually override the thermal switch and turn it on.  I have a 530 that gets pretty hot and I have not heard or seen the blower activate. Fuse is good....
 
Thanks in advance for the advice!  Rick

[Jerry 5TJ]

The (recently installed) avionics fan in my "C" is not thermally controlled.  It is wired to its own CB on the avionics sub-panel.  The fan blows when the avionics master is on.   The fan does blow air through a small flex SCAT tube into air inlet port on the back of the 530. 

 

Perhaps your plane does not have a thermal switch and the fan may just be inoperative?

 

 

 

 

 

[Releew]

Thanks for the feedback......  You are correct.  Motor was frozen.  Very odd the breaker was not tripped.  I check voltage at the motor connector and was getting 23VDC.

[Plummit]

You wrote:  " Very odd the breaker was not tripped."

 

Just because the motor is "frozen" doesn't mean that it will draw high current.  Is it a brushless motor?

 

regards

 

~Marc