[Amps] Blowers

[Richard]

>Richard <2@mail.vcnet.com> says --
>
>I said >>Once you stall the blower, there's no airflow to cool the motor,
>and it
>>>will overheat relatively quickly.
>>>
>>*  Maximum load on a blower is with free flow delivery.  During a
>>cavitation condition, the airflow stalls and, since the motor is not
>>working as hard, it speeds up slightly.  Also, the typical motor has a
>>radial-wheel impeller on the armature to cool itself.
>
>Yes.  With no place for the "cooled" air to go, it stays at the motor.

€  The motor's radial-wheel cooling system does not stall at all.

>With a no-load motor running at top speed, cavitation occurs.  

€  Cavitation is largely caused by too much restriction to flow.

>...

-  R. L. Measures, a.k.a. Rich..., 805.386.3734,AG6K, 
www.vcnet.com/measures.  
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