mtylerfl
06-22-2011, 11:16 AM
Hello,
Was running a project the other day and stopped it at about 90% to scoop out a little sawdust. When restarting, the machine resumed, but the Cut Motor was not running. I had to abort the project and placed the board into my other machine (an "A" machine with the QC). It worked like a champ and everything lined up perfectly - yay, CarveWright!
Later on, I checked all the normal things...cover switch, wired connections, inspected x-termination board/C1 capacitor...all was well. So, I took off the cover and pulled out the top-most motor brush from the Cut Motor. Aha! Well, there's my problem! Besides being very worn (374 cut hours on this machine), the copper braided wire had broken loose between the carbon and the brass contact. Peek at the photo below to see the comparison between old and new brushes.
I replaced both motor brushes and it's "alive" and well! the motor sounds so s-m-o-o-t-h! Better than new!
As AL has always said, don't forget to change your motor brushes as part of your normal maintenance routine. CarveWright recommends motor brushes at approx. 250 cut hours. Took only about 30 minutes overall and I didn't even have to remove the cut motor to do it (although it was "interesting" working with a mirror and my fat fingers for the underside motor brush replacement!)
Was running a project the other day and stopped it at about 90% to scoop out a little sawdust. When restarting, the machine resumed, but the Cut Motor was not running. I had to abort the project and placed the board into my other machine (an "A" machine with the QC). It worked like a champ and everything lined up perfectly - yay, CarveWright!
Later on, I checked all the normal things...cover switch, wired connections, inspected x-termination board/C1 capacitor...all was well. So, I took off the cover and pulled out the top-most motor brush from the Cut Motor. Aha! Well, there's my problem! Besides being very worn (374 cut hours on this machine), the copper braided wire had broken loose between the carbon and the brass contact. Peek at the photo below to see the comparison between old and new brushes.
I replaced both motor brushes and it's "alive" and well! the motor sounds so s-m-o-o-t-h! Better than new!
As AL has always said, don't forget to change your motor brushes as part of your normal maintenance routine. CarveWright recommends motor brushes at approx. 250 cut hours. Took only about 30 minutes overall and I didn't even have to remove the cut motor to do it (although it was "interesting" working with a mirror and my fat fingers for the underside motor brush replacement!)