The Shop > Tools
micro mill electricals problems, help please!!
lordedmond:
Ok
First pic is the tag for the mill as a unit
The last pic clearly states its a DC motor so your expert burnt it out QED
Stuart
matnewsholme:
Yep the big sticker is ratings for the entire mill as a unit. Main power input to mill is 220-240v AC. Motor doesn't have a mt2 spindle taper. Pretty obvious smaller sticker is the actual motor spec and it's clearly DC. If you look above the cable on the first picture you can see the end of the brush cap ( round black thing with a screw driver slot). AC motors don't have brushes. He's fried your motor and should pay for replacement IMO.
John Rudd:
--- Quote from: matnewsholme on December 31, 2014, 07:35:18 AM ---Yep the big sticker is ratings for the entire mill as a unit. If you look above the cable on the first picture you can see the end of the brush cap ( round black thing with a screw driver slot). AC motors don't have brushes. He's fried your motor and should pay for replacement IMO.
--- End quote ---
Ahhh. But universal motors have brushes too....have a look at your Bosch electric drill/planer/ sander.....
A typical DC motor is either perm magnet or separate field coils energised with a DC supply....not connected in any way to the brushes....(a universal motor has the field coils in series with the brushes typically...)
pmdevlin:
just found the motor at arc euro, its a dc motor, so I have to agree, he has fried it, by reading, like me, the main sticker, now its been pointed out, its clearly for the mill, not motor, so original fault lies with board, or pot, and I bet its the flippin £5 pot!
So its back to him later, and arguing the point, I hate this confrontation, I'm an honest easy going guy and expect same back, hopefully he will realise his error when he tests output of controller and does the right thing by me, hmmm, not holding my breath!
I have identified the board from serial numbers on the pics shown on arc euro site, looks like NOBODY else sells these motors or controllers, Hopefully John can save the board!
matnewsholme:
Forgot about universal motors as it's not something I tend to come across tbh. But his motor is clearly labelled as DC, so still think his expert is at fault.
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