View single post by Thom Williamson
 Posted: Wed Sep 22nd, 2021 08:47 pm
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Thom Williamson


Joined: Sat Jun 13th, 2020
Location: California USA
HI all:This my first post so I hope I am doing this right.
I have a Robbins & Meyers $4504 (pat # 1430486) that I am in the middle of a restoration on.  When I got it (estate sale) the head wire was cut between the motor and switch.  As such I am having a problem connecting the motor back to the multi speed switch.  In past projects, I have just experimented by switching the wires around.  I have replaced the wire coming from the motor but without any color coding or any other way of properly connecting the 3 wires, I'm stuck.  No matter what combination I use to connect to the switch, I either get nothing or just a hum, the motor doesn't spin.  Because I never saw this fan run before I don't know if my problem is how I am wiring it or a bad motor or switch.
Any suggestions would be appreciated.

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