Thread Number: 74747  /  Tag: Vintage Automatic Washers
Unimatic Wiring
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Post# 985616   3/6/2018 at 22:51 (198 days old) by lebron (Minnesota)        

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Hello all this post applies to all Unimatics and also the 1955 WV-65 models. I do not have access to a WV-65 immediately otherwise I would have more hands on photos, but will soon so I would like to be prepared. I am a beginner electrician and so I have some questions.

I am in the interest of stripping down the Unimatic completely. Think of removing everything except the power to the mechanism and thus its functions wash and spin. If I wanted to do that and have control over power to the motor and trip solenoid how would I go about it. Would it be as simple as reusing existing wiring and installing toggle switches on the blue and brown leads as shown in the first picture?

What about during spin when the brown lead is energized... as seen in Figure 20. The brown lead must get its power through the timer ultimately from the black lead. But in my setup I don't want a timer so how would I provide power to the brown lead when I need it? Could I "split" the blue lead before the switches so I have power to one, the other, or both when I need it?

And ultimately what about the neutral leads? Will the single white neutral lead from the trip solenoid (motor) be sufficient? I assume this 50s system operates without a ground hence the need for manual grounding. Could it be upgraded with a better system and three prong plug? I am thinking safety long term here I would feel much better if it were grounded through a new power cord. Or if it would be easier to retain as much of the old wiring as possible and just ground it that is fine too.

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Post# 985619 , Reply# 1   3/6/2018 at 23:41 (198 days old) by Unimatic1140 (Minneapolis)        

unimatic1140's profile picture
Well that sounds like a cool project Jed, here is how you would wire that. You can use a wire nut on the black wire from the new power cord to attach all the black wires. Same with the white neutral side attaching all the white wires at the cord wire together (white is shown in gray on my diagram)...

Happy spray rinses :-)

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Post# 985645 , Reply# 2   3/7/2018 at 06:25 (198 days old) by combo52 (Beltsville,Md)        
Unimatic Rewire

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Roberts diagram should work well, you should however keep the re-settable overload in the black-hot feed to keep you from burning out the start winding in the motor if something goes a little wrong with the motor getting up to speed in spin. You could also use a 15 amp time delay fuse in the circuit in a HD light socket and just replace the fuse if it blows.


John L.

Post# 985690 , Reply# 3   3/7/2018 at 12:54 (197 days old) by lebron (Minnesota)        

lebron's profile picture
Robert - thanks a lot for the wiring diagram. This is pretty much exactly what I was trying to do. Your diagram makes sense to me and I should be able to install the system in my washer. Spray rinses - you read my mind exactly ha.

John- I will utilize the original motor protection switch in the hot wire lead. I will also install a Buss T-15 and light socket like you suggested.

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