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Groth · 02-11-2004, 08:58 PM

I don't know the specific of that pump, but in general AC powered pumps use synchronous motors - meaning it rotates at a set multiple of the power line's freqency. To change the speed you would need to change input frequency, not the input voltage.

02-11-2004, 08:58 PM	#2
Groth Cooling Savant Join Date: Mar 2003 Location: MO Posts: 781	I don't know the specific of that pump, but in general AC powered pumps use synchronous motors - meaning it rotates at a set multiple of the power line's freqency. To change the speed you would need to change input frequency, not the input voltage.