CL500m (it was free!)

[Gary LynchParticipant @garylynch39491]

Hi everyone
I’m going out on a limb here!
I am trying to get a new switch block for the (lathe that shall not be named!) but incase I can’t buy one has anyone done a manual wiring setup?
I have the wiring diagram from an amazing person on Youtube but am hesitant to try as it appears to have a big capacitor/resistor in the switch mech

Thank you for any help
Gary

[EmgeeParticipant @emgee]

It is not unusual to find a low value capacitor across switch contacts, it reduces arcing and subsequent damage to the contacts when the power is applied/removed.

Emgee

[Gary LynchParticipant @garylynch39491]

PS just in case it helps someone else.
Does a Warco WMT300 have the same switch?
Here is the wiring diagram

[Martin ConnellyParticipant @martinconnelly55370]

If you go for a new wiring setup then consider just getting a VFD and three phase motor for it. There are YouTube videos of someone doing this modification. Saves on some belt changing for speed control as well.

Martin C

[Howard LewisParticipant @howardlewis46836]

If you Google Clark CL500M you should be able to find a parts list, with a wiring diagram on Page 2, that you can download.

There appears to be no sign of a capacitor in the Switch Box Wiring Diagram.

If you cant find it, PM me with an E mail address, and I’ll send it over.

As an aside, recently there was an article giving details of how to improve the clamping of the mill head, to prevent movement.

Howard

[Gary LynchParticipant @garylynch39491]

[noel shelleyParticipant @noelshelley55608]

Forgive me but I see No resistor or capacitor in the diagram which seems simple enough. Noel.

AH yes, as a single phase motor there could well be a start capacitor, but the resistor ? VFD and new motor would be an expensive way to fix the switch. N

[Gary LynchParticipant @garylynch39491]

[Gary LynchParticipant @garylynch39491]

[SillyOldDufferModerator @sillyoldduffer]

[Gary LynchParticipant @garylynch39491]

[Les Jones 1Participant @lesjones1]

Can you post a picture of the resistor and capacitor that gives us some idea of where it is located on the lathe.
You mention a youtube video but you do not give the URL for THAT YOUTUBE.
what is the fault with the lathe that makes you think thet the switch box is the cause of the broblem.

Les.

[Robert Atkinson 2Participant @robertatkinson2]

Apart from anything else, the control panel wiring is showing clear signs of overheating damage. In paricular the push on crimp terminals. You can see that a number of them have turned brown due to elevated temperature.
I’d suggest that the lathe needs a new panel and a re-wire. The overheating oxidises the conductors making it hard to get a good contact even if cut back. The insulation is also damaged and can fail, possibly later. Anything less than replacement and re-wire will almost certaily fail in the future. The failure could be dangerous.
The motor need to be tested before re-wiring. As a minimum by carefully wiring it to a plug without the control panel.

Do it properly and you will only have to do it once.

EDIT:
Looking at the motor puzzle, it appears from photos on the web and in the Clarke manual that the motor is a capacitor run (might be start can’t be sure) with the capacitor and it’s wiring integrated into the motor. The motor assembly has 4 terminals L, N D1 and D2 or 4 wires. I think the “windings” inside the motor box on the wiring diagram are stylised and not the actual motor configuration.

Robert.

[Gary LynchParticipant @garylynch39491]

[Robert Atkinson 2Participant @robertatkinson2]

You can replace the existing panel buttons with an integrated NVR like the KJD17.

The FWD/REV switch is just a DPCO rocker switch  This one http://www.ebay.co.uk/itm/133757432545 would do.

[mgnbukParticipant @mgnbuk]

The reason I came here is the lathe panel is now obsolete and cant be purchased

Try Chester Machine Tools – that looks like the same reversing switch / NVR unit fitted as standard to the milling machine power feed I have that came from a Chester open day.

Nigel B.

[Howard LewisParticipant @howardlewis46836]

The Chester Model B is a similar machine, so spares MIGHT be available from there

Howard

[Gary LynchParticipant @garylynch39491]

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