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

[Howard Lewis]

On Howard Lewis Said:

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

Hi Howard
I have that diagram but the image I posted is a breakdown which is a better view of the switch and having opened it it does have a 240v 50hz capacitor which I can assume based on google its a start up capacitor.
i have to be honest I have removed the milling head. I have a separate mill.

[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

[noel shelley]

On noel shelley Said:

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

Hi Noel
There is definitely a capacitor,(there is no resistor, just me not knowing before googling)
I can sort of see how to re-wire a new  switch but as I have never used a capacitor I wouldn’t know where it would go, I assume on the ‘on live’ side of the switch?

[Martin Connelly]

On Martin Connelly Said:

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

Hi Martin
I have been looking at this but we are talking £2-300 if I go that route. I know that this is possibly where I may have to go but not until I explore all options 🙂

[Gary Lynch]

On Gary Lynch Said:

On noel shelley Said:

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

Hi Noel
There is definitely a capacitor,(there is no resistor, just me not knowing before googling)
I can sort of see how to re-wire a new  switch but as I have never used a capacitor I wouldn’t know where it would go, I assume on the ‘on live’ side of the switch?

Hi Gary, don’t assume anything – it’s a mystery at the moment.  Can you post a photo of the item please.  The circuit diagram doesn’t show it, and your description doesn’t help.  I think the circuit is incomplete.  A picture is worth a thousand words.   Any markings on the alleged capacitor?  Might be a filter capacitor, which is completely different from a motor Start/Run capacitor.

And which switch do you mean?   The diagram shows a reversing switch, two interlock safety switches (boxed in Green below) , and a bunch more built into the contactor (blue box).   If by “Switch Block” you mean the contactor, much easier to replace these as a component than to do the same with manual switches.

 

Needs to be understood before proceeding.  I’m sure we can help but more info needed please.  I’m baffled!

Ta,

Dave

 

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