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How to wire a knob switch for an old machine?
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[QUOTE="wirenut, post: 6006174, member: 395847"] [USER=638574]@jrmichler[/USER] is correct on the knob. 2 normally open sets of contacts, one set operates in each direction, with a spring return to center (off). I can't find what the contacts are in the ebay listing though. Is the ebay part one you are looking to use to replace the other one? if you need replacement contacts for the 800tj91c19 I can get you that info tomorrow when I get to work. these usually are multipart switches. one part is your contact block (2 n.o. momentary in your case) and an operator which can be a push button, a spring return turn knob (your case) , a maintained turn switch or an e-stop(manual reset). Unless you broke the operator, you can just replace the contact block. One other piece of info needed is the diameter of the mounting hole ( 18mm, 22mm,26mm or 30mm) [/QUOTE]
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How to wire a knob switch for an old machine?
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