Clarke CL500M (YES I KNOW)

John,

I will not be able to get to it until thursday but will scan all and send it to you.

Martin P

Anyone know where I can get a motor from for the cl550 lathe thanks.

Hi everyone, first post here and hoping this thread is still live.

I too am in the process of wiring up a CL500M (been in bits in a garage for years since buying it cheap!

The situation is all wires are unmarked, sigh, and many disconnected.

The motor is totally disconnected and start capacitor removed (previous owner thought it was faulty so I've bought a new one.)

The start stop and reverse switch is mercifully still connected.

However, there is a secondary Unimac NVR switch attached to the machine but all wires cut off inside the box.

Also no sign of the centrifugal switch for the start capacitor...

To get to the point, my questions are...

How does the start capacitor connect up, should there be a centrifugal switch, or is it in fact a run capacitor that I shall need to buy instead?

Is there a way of telling which wires should connect to where on the motor? I know which wires come from where on the switch so if one of you would be kind enough to tell me how yours is connected (motor block terminal numbers) that would be amazing!

Is the additional NVR switch a superfluous addition from the previous owner? I can't see what purpose it could be for or how it could be wired up.

Many thanks for any help!

Will

If you Google Clarke CL500M, you should be able to find a parts manual which shows the wiring diagram. (I think that one site will give you the Operating manual, and then other the Parts List. )

You may need to do some circuit tracing but it should get you back on track.

If all else fails, PM me, as I have both on file, and could E mail them.

Howard

Hi Howard,

Thanks for your response. I too have copies of those but the wiring diagram makes no sense to me, and I can read electrical drawings!

It just shows the latch switch internals, basically, no other part of the circuit. Plus the terminal codes written on it don't match anything marked on the machine.

Afraid I need something with a bit more accurate detail

Hi all,

I originally started this thread and completely forgot about it. I did get my lathe running and made my own wiring diagram of how it was wired, I agree with the comments above, I am an Electrical & Control System engineer and read schematics all day long but the one provided lost me. I decided to create a very simplified one of how my Clarke CL500 is wired and hopefully this will help you with yours.

Hope this helps.

Adam

If wires have been cut through, it should not be difficult to ascertain which wires are to be connected (as long as they are of different colours?

Hi guys, thanks for your responses.

Adam, that diagram is a great help and matches what I've found so far with my multimeter

NDIY, alas it isn't quite so easy, the wires are not all different colours, and it's the wiring up itself I'm questioning

I'll post a couple of photos to better explain the predicament...

Hmm, I can't seem able to upload photos from my phone to this. Oh well.

I have 4 wires, I now know where they come from on the switch (which are live or neutral) but don't know what terminal on the motor to connect them to.

There are two additional wires coming out from the top of the motor. I think they should connect to the start capacitor, but there should also be a centrifugal switch?? Is it built inside the motor?

Hope that's clear, thanks again in advance!

.

.... At the top of the list of forum FAQs : **LINK**

https://www.model-engineer.co.uk/forums/postings.asp?th=103028&p=1

MichaelG.

Thanks Michael

This is my control box and motor terminations

I have also just realised there was no terminal numbers on the previous wiring diagram as we can only upload in .jpg format and the resolution was not high enough.

although this isn't a great quality version.

I would send / attach a .pdf but I am not sure how on this forum.

Edited By Adam Smith 13 on 06/10/2020 15:13:58

Hi noob here, bit late to the show but I have just removed my switchbox and can tell you exactly how it was wired if you want?

two motor wires essentially go straight to switched mains, the other two appear to be field windings that can reverse polarity through the direction switch.