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Post by radio on Oct 10, 2014 18:24:39 GMT -5
I have a 12 inch Lortone that doesn't have a whole lot of use. I cleaned the rock snot the other day and changed oil before starting to slab some pet wood. Made one cut and most of a second when the motor just quit. The feed motor still operates, so I know it's getting power. I felt the motor and the bottom half was pretty warm, so thought it tripped the protection circuit. Waited for it to cool and tried the reset button, but no "click" so it must not have tripped. No overheated smell and nothing I do will fire it up.
Anyone experience this with a motor before?
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QuailRiver
fully equipped rock polisher
Member since May 2008
Posts: 1,632
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Post by QuailRiver on Oct 10, 2014 19:13:36 GMT -5
I've had my 12" Lortone overheat a couple of times and trip the thermal protection switch. But after it cooled for a while pushing the red reset button has always worked for me. I think before I did anything drastic I would check to make sure the power toggle switch for the motor didn't short out. Unplug the motor cord from the control box and plug a lamp into the motor power outlet on the control box and flip the power toggle switch on. If the lamp doesn't light up you got lucky and it's the toggle switch - an inexpensive fix. Larry C.
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Post by phil on Oct 10, 2014 19:17:56 GMT -5
Try removing the blade from the rock in case it's bound up. Did you mess with the alignment when you cleaned it out?
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Post by radio on Oct 10, 2014 19:40:05 GMT -5
Try removing the blade from the rock in case it's bound up. Did you mess with the alignment when you cleaned it out? Nope, no messing with the alignment. I backed the rock away from the blade and spun it by hand to check for any binding and found none. As soon as I get time I will troubleshoot a bit further This one overheated once before, but a push of the reset and it was good to go. The reset does not appear to be tripped and repeated pushes on it does not have any effect.
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Post by deb193redux on Oct 10, 2014 20:02:14 GMT -5
motors do die. usually by seizing up. but I have also had motors slowly lose the hp. Sounds like time for a new (used) motor.
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Post by radio on Oct 11, 2014 3:01:44 GMT -5
motors do die. usually by seizing up. but I have also had motors slowly lose the hp. Sounds like time for a new (used) motor. .True, but the saw is only 3 years old and maybe has 100 hours on it. The outlet for the motor does have power, so it isn't a switch issue
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Post by roy on Oct 11, 2014 9:28:54 GMT -5
those plug ins on the box will burn out un plug the motor and plug it into on its own and see if thats your problem
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Post by phil on Oct 11, 2014 12:28:20 GMT -5
Good one. Yep, test the motor separate and see before you do any more.
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Post by Rockoonz on Oct 11, 2014 12:51:25 GMT -5
I bet the problem is somewhere in the switch box. You need a non contact tester. www.harborfreight.com/non-contact-voltage-tester-97218.html5 bucks at Harbor freight on sale right now, you can check the wire running to the motor with it to see if there's power to the motor. I look at the supply first when looking for problems, especially if the motor doesn't hum or anything. The only time I have ever found a problem with a silent motor at the motor it was a wire that had come loose at the capacitor.
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Post by radio on Oct 12, 2014 8:28:10 GMT -5
I bet the problem is somewhere in the switch box. You need a non contact tester. www.harborfreight.com/non-contact-voltage-tester-97218.html5 bucks at Harbor freight on sale right now, you can check the wire running to the motor with it to see if there's power to the motor. I look at the supply first when looking for problems, especially if the motor doesn't hum or anything. The only time I have ever found a problem with a silent motor at the motor it was a wire that had come loose at the capacitor. I'm not that lucky! Plugged the motor in directly and nothing. Plugged a light in the control outlet and it lights up, so it's in the motor for sure. The reset button has not popped out, so I have no idea why or how the motor died. I'll pull it off and check it when I get time and see if it is toast, or is something simple
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Oct 12, 2014 8:29:59 GMT -5
I just replaced my switch box on my saw....Some great ideas on here! Hope one of them work for ya' Radio.....Thumbs up
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Post by phil on Oct 12, 2014 14:19:50 GMT -5
Take it to a local repair shop and have them check it out. Could save you a lot of $$ over buying a new one.
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Post by radio on Oct 29, 2014 17:51:40 GMT -5
Found and fixed the problem. Danged mud dobbers packed it full and created all sorts of problems. Some cleaning and she is back cutting again. Just cut several slabs of really cool Purple slag glass and have some top shelf Mozarkite going now. Thanks for all the help, hints and support
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