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Pool pump speed control.


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#1 cjo_28_Chris

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Posted 11 September 2005 - 08:42 AM

Hello, everyone. I have a quick question: Is it possible to convert a single speed, 1.5 HP, pool pump to a two-speed or variable speed pump? The pump has brushes, it is rated at 120V and 60 hz. Best regards.

#2 marke

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Posted 11 September 2005 - 09:23 AM

Hello Chris

Welcome to the forum.

If the motor has brushes, it will be a "universal motor" and you will be able to control the torque, and thereby speed, by reducing the voltage applied to it. This could be done by the use of a tapped transformer, or a variable transformer or a solid state AC voltage controller.

The solid state controller would be a phase controlled triac rather like a large light dimmer.

Best regards,




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