Danny Smith | 16/05/2015 17:59:29 |
4 forum posts | Hi,I've just joined this forum after purchasing a used Clarke cl 250 lathe with milling attachment. I'm having problems firing this thing up.I purchased it as a non runner.After getting the multi meter out,,I found the on/off speed control pot was shot.so I have replaced this along with the 4amp fuse.when I turn the lathe on,the overload (orange light) illuminates and nothing happens.After a few minutes it blows the 4amp fuse.I'm no expert when it comes to electronics and I'm only familiar with the basics.does anyone have any ideas What else I need to check? All help appreciated. Regards Danny. |
Neil Wyatt | 16/05/2015 20:44:02 |
![]() 19226 forum posts 749 photos 86 articles | Have you checked the lathe and motor will turn freely? It may be worn out brushes, more likely than a shorted motor. If the mechanicals turn freely and the motor isn't shot (it should run slowly on a car battery if you disconnect it from the lathe), then the control board may be shot. See if you can see any obvious signs of burnt out components. Contact Clarke or Machine Mart for spares, or you could fit a C1 board from Arc Euro www.arceurotrade.co.uk/Catalogue/Machine-Spares/C1-Lathe-Spares I think Warco a, Chester and Axminster all sell versions of this machine as well. Not cheap, sadly - so do test the motor first. Neil |
Danny Smith | 16/05/2015 20:51:09 |
4 forum posts | Thanks for your reply Neil.I have checked the motor brushes and they are hardly worn.The pulley is a little notchy when rotated by hand.I have tried the motor on a 12v motorcycle battery with no response.I've had all the electronics out of the lathe,when I soldered in the new speed pot.The board looked immaculate.All tracks fine.I'm thinking maybe the fwd/rev switch could be wired up wrongly? I don't have a decent wiring diagram to check this out. Danny. |
John Rudd | 16/05/2015 22:15:44 |
1479 forum posts 1 photos | Test the control system with a 100w light bulb in place of the motor..... |
Les Jones 1 | 17/05/2015 09:07:20 |
2292 forum posts 159 photos | Hi Danny, Les. |
Danny Smith | 17/05/2015 11:44:36 |
4 forum posts | Thank you John and les,I will try your suggestions later today.My motor is a zyt-150 150w 240v dc 2000 rpm. If the motor is at fault,can it be repaired?luckily I have the same motor on the miller.so I may be able to compare the two. Thanks again Danny. |
John Rudd | 17/05/2015 12:09:14 |
1479 forum posts 1 photos | Danny, yes the motor can be repaired but the cost makes it uneconomical....best bite the bullet and buy a replacement.. Arc list the ZYT 150 at around £95.... |
Pat Bravery | 17/05/2015 13:17:34 |
![]() 96 forum posts 24 photos | Hi Danny, You say that the on/off pot is shot, remember that the on/off is different in that when you switch it on you are breaking the circuit. I think that it is called make to break type. It is not how you would expect the on/off to work. I got caught out on my CL300 some years ago. Good luck with it. Pat |
Danny Smith | 25/05/2015 17:00:21 |
4 forum posts | Thanks for your help guys.The pcb is shot.I've ordered a 240vac to 180vdc motor contrroller.which has on/off and speed pot.so I'll need to incorporate a motor reverse switch and lathe/mill selection switch.hopefully won't be to difficult.Should be able to get this lathe working. |
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