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Originally Posted by Al Skierkiewicz
On the list of Victor failures...
1. Metal shavings inside the device.
2. Driving a locked motor over a long period of time.
3. Two motors fighting each other in a multi-motor drive.
4. Short on the output or power wiring connected backwards. (A hint on this one and the two previous ones is a buzzing sound coming from the circuit breakers)
5. Metal shavings inside the device. (yes I repeated myself, but this is the cause for about 90% of failures.)
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Good call on that - a postmortem on the dead Victor revealed some small aluminum shavings. Our theory is that when we blew out the speed controllers with compressed air, we had the power and motor wires removed and we blew shavings into their screw holes. Inside those connectors is where we found the most shavings. We're still not sure about the second failure - we are in the process of removing, disassembling, inspecting, cleaning, reassembling, and remounting all of our Victors.
Thank you, Mr. Skierkiewicz, for being so helpful to us and everyone else here.
And coldabert, thanks, but before this problem, the Victors' LEDs tipped us off to a PWM cable problem, so we checked all the cables with our handy-dandy multimeter and as of the time of failure (and right after) they were all good.