How do I slow down a 3 speed fan


Old 09-03-05, 01:37 PM
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Exclamation How do I slow down a 3 speed fan

I am using a 3 speed ceiling fan motor on a project. It needs to run at the LOW setting of 70rpm. It is a new motor, wired through the control box that came with it. It will only run at the HIGH speed setting of around 200 rpm.
I installed another new control box including 3 speed switch, reversing switch, and 2 capacitors, but the problem remains. I took it back to the store, but they couldn't figure it out. I don't know the make of the motor; the only ID is a tag saying "153x16". The wiring from the control box to the stator - through the hollow shaft -- is red/yellow/brown/purple. I need to get it running on 3 speeds, or just running at the LOW speed would work -- if it will start. Any ideas?
Old 09-03-05, 02:46 PM
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I am not an expert on electric but I bet an inline adjustable rheostat would work!
Old 09-03-05, 03:00 PM
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I've tried plugging it into a router speed control, and an electrician friend wired up a variable motor control in a box, but neither would slow it down.

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