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Electric Power & Utilities/how to wire a rotron saucer fan


I have a rotron saucer fan (series 340ZS) that was given to me. I once saw one that someone had set up as shop fan. I know very little about electrical wiring and would like some directions for dummies on how to wire this fan with a switch to make a similar fan for my shop.I have the capacitor as you can see on the image.
Thanks Gregg

First of all, the capacitor you show will not work.  You need a 2 mfd, 115 or 220 VAC. capacitor. For the switch, a regular light toggle switch will work. Connect the black power, to the bottom of the switch, and and then connect the top to one side of the capacitor. Connect T4 to the same post. Connect T8 to the other post of the capacitor. Connect T1 to the white power lead(common). If you are using this for a cooling fan, for your shop, you are in for a big disappointment. It's not much more than glorified exhaust bathroom fan. It's purpose is to cool electronic circuit boards.  

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Charles C. Jones


Let Me help you with your problems with single phase and three phase electric motors. I can tell you how to troubleshoot your motor problems. From simple testing of capacitors, how to test your windings, replacing bearings, and general maintenance. Before we go any further, remember these words of advice: Disconnect the power before you do anything! Please limit your questions to electric motors and there immediate components. I review each question, and if I can answer or help, then I will. If you receive a rejection, it means it is out of my expertise, and just do not have the answer. I'll be waiting for your question.


I have 40 years experience in the repair of electric motors and related equipment. I am a master machinist in the field of motor repair. I was employed with my company for 35 years, but retired in May of 2013. The downside to that is I lost access to a lot of technical data. I will still try to give you the most accurate advice that I can.

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