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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Electric Motor on Mitre Saw Smokes
I'm burning up my Mitre Saw motor. How do I repair? It's a Ridgid
12", model MS12500. Details: Was cutting three 2x pressure-treated boards at the same time. After enough binding, the motor began to smoke. Now, it smokes after 10-15 seconds of use, with no wood being cut at all. Has not yet frozen, but expect it to fail soon. How do I fix? |
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wrote in message
... I'm burning up my Mitre Saw motor. How do I repair? It's a Ridgid 12", model MS12500. Details: Was cutting three 2x pressure-treated boards at the same time. After enough binding, the motor began to smoke. Now, it smokes after 10-15 seconds of use, with no wood being cut at all. Has not yet frozen, but expect it to fail soon. How do I fix? Yes, the motor in your saw is likely damaged. The insulation on the wire used in the windings has probably burned and there are now shorted turns in the motor's windings. The only cures are to (1) rewind the motor, or (2) replace the motor. You may not be able to see the burned insulation... it's probably deep inside the mass of the winding. The heat builds up much quicker in the middle of the mass of wire. The current generation of motors is not built to take a lot of abuse, as you have experienced. -- Dave M MasonDG44 at comcast dot net (Just subsitute the appropriate characters in the address) Never take a laxative and a sleeping pill at the same time!! |
#3
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wrote in message
... I'm burning up my Mitre Saw motor. How do I repair? It's a Ridgid 12", model MS12500. Details: Was cutting three 2x pressure-treated boards at the same time. After enough binding, the motor began to smoke. Now, it smokes after 10-15 seconds of use, with no wood being cut at all. Has not yet frozen, but expect it to fail soon. How do I fix? Yes, the motor in your saw is likely damaged. The insulation on the wire used in the windings has probably burned and there are now shorted turns in the motor's windings. The only cures are to (1) rewind the motor, or (2) replace the motor. You may not be able to see the burned insulation... it's probably deep inside the mass of the winding. The heat builds up much quicker in the middle of the mass of wire. The current generation of motors is not built to take a lot of abuse, as you have experienced. -- Dave M MasonDG44 at comcast dot net (Just subsitute the appropriate characters in the address) Never take a laxative and a sleeping pill at the same time!! |
#4
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wrote in message ... I'm burning up my Mitre Saw motor. How do I repair? It's a Ridgid 12", model MS12500. Details: Was cutting three 2x pressure-treated boards at the same time. After enough binding, the motor began to smoke. Now, it smokes after 10-15 seconds of use, with no wood being cut at all. Has not yet frozen, but expect it to fail soon. How do I fix? Obviously some windings have shorted, could be on the armature, the field coil assembly, or both, it's hard to tell. If it's an expensive saw it may be cost effective to replace the motor, otherwise it's probably cheaper to buy a new saw. Check with the manufacture and see what parts are available. |
#5
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wrote in message ... I'm burning up my Mitre Saw motor. How do I repair? It's a Ridgid 12", model MS12500. Details: Was cutting three 2x pressure-treated boards at the same time. After enough binding, the motor began to smoke. Now, it smokes after 10-15 seconds of use, with no wood being cut at all. Has not yet frozen, but expect it to fail soon. How do I fix? Obviously some windings have shorted, could be on the armature, the field coil assembly, or both, it's hard to tell. If it's an expensive saw it may be cost effective to replace the motor, otherwise it's probably cheaper to buy a new saw. Check with the manufacture and see what parts are available. |
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