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Clarke CL500M (YES I KNOW)

Wiring issues

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Simon Daniels15/06/2015 19:04:19
3 forum posts
6 photos
I have recently acquired a clarke cl500m lathe. But the switch had been ripped off and the manual is as good as a chocolate tea pot for rewiring it.
Can anybody give me detailed wiring instructions on what goes where or better pics of behind the switch panel.

It is the standard setup. With revers switch and push start stop relay switch and 4 wires to the motor.

Many thanks in advance.
Carl Wilson 415/06/2015 21:55:04
640 forum posts
53 photos

Can you post a photo of the switch? it might help. By the way, I've got a fixed steady for your machine, if you are interested in it.


Simon Daniels16/06/2015 07:08:07
3 forum posts
6 photos
Thanks for the reply. I have uploaded the pictures to an album in my profile if this helps.
I would be interested yes, how much would you be looking for
Ady116/06/2015 08:48:00
3204 forum posts
423 photos

Carl Wilson 416/06/2015 09:35:08
640 forum posts
53 photos

Hello Simon,

Right...if your switch is the one shown in Ady's pictures above, then it is similar to the one on my Chester Mill/Drill. I rewired this and drew a diagram. Unfortunately I am currently aboard a ship off the coast of Angola...and my diagram is in my workshop in the UK....not in the notebook I brought with me as I'd thought. Dreadfully sorry about that.

I may be able to fathom it out and rest the details from my creaking memory, if I give the photos a damn good stare. So I'll try that....

The steady is brand new and in it's box still, never been used. You can have it for £40 plus postage. If your lathe is as well built as the steady then it can't be too bad. It certainly has got a fair old swing. I should point out that I won't be back in the UK until the 11th of July, which will be the earliest I can send you the steady.

If you drop me a PM I'll let you have my email address and then we can sort out getting you your steady.

Kind Regards,


Simon Daniels16/06/2015 09:42:22
3 forum posts
6 photos

I have also added what I think will work wiring wise if anyone is save let me know what you think, will it work.

Ajohnw16/06/2015 10:51:24
3631 forum posts
160 photos

I can explain the principle these work which might help.

If there is a rupture type emergency stop switch the mains goes in through that. Rupture as the force on the button is sent straight to the contacts so they may open even if slightly welded.

The general idea is that the whole lot defaults to off if the power fails so the on button energises the really coil and contacts on the relay latch the coil on. The stop switch is in the relay latch circuit to that when it's pushed it deactivates the relay. The machine is powered via other relay contacts. It should provide both live and neutral to the machine via the relay

2 arrangement are shown here less powering the machine but check what I have just said in case there is an error. Doesn't look like there is




Charlie Croat12/01/2018 18:23:39
2 forum posts
5 photos

Hi, just received my new switch for my WEMAS lathe/mill which was a precursor of the Clarke CL500, same thing just way older and made in Germany...had to keep repairing failing switch so happy to find a replacement. Even happier to find this site that can help wiring it. The new switch is the same as yours in the photo...KEBU JD3..looks identical but came with a bunch or pre wiring (( see photos in my album)). So was doubling checking if the wiring diagram you posted did work for you... your post is from a few ago so thought it prudent to do the double check.... thanks in advance.....

mick7012/01/2018 19:26:43
510 forum posts
38 photos

pm me e mail adress and will send pics.

i need pic of inside box on motor if you can pls.

got switch here wired up and never been any good at putting up pics.

mick7012/01/2018 19:41:29
510 forum posts
38 photos

or if near bd19 you can come look at it

John Rudd12/01/2018 20:01:49
1125 forum posts
55 photos

There is a wiring diagram in my photo albums

john swift 112/01/2018 21:50:59
305 forum posts
174 photos

after looking at Simon's wiring diagram

simon daniels diagram.jpg




I have revised the diagram after correcting the FWD/REV switch -

( in the photo it looks like a 2 pole toggle switch)

revised cl550m switch wiring.jpg


Edited By john swift 1 on 12/01/2018 21:56:27

Charlie Croat13/01/2018 16:19:38
2 forum posts
5 photos

thanks for all the prompt replies and updates !! will go ahead and give it a go... may take a bit of a creative repair as you can where to put the new box.....anyone know why Clarke moved the switch and plonked it on the side ??..

cl500 (wemas) switch.jpg

Edited By Charlie Croat on 13/01/2018 16:31:41

Andy Cowell02/04/2018 17:23:50
1 forum posts
I wonder if you can help me, I was given a cl500 lathe and the switch box had been removed and replaced but not wired up again, but the wiring is different from all the diagrams that have been posted, does anyone have a picture of the wiring from.inside there switch because I am lost..

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