That is a 3ph snubber made up of three caps and three resistors.
It should measure open circuit between leads.
If you have to reset the O/L below the contactor, it could be bad contact on the O/L. if it is not actually the motor itself.
But the fact it shows up when turning off tends to point to the O/L.
Al.
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11-08-2016, 03:41 PM #1
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Re: Troubleshooting alert 18345 - Coolant Motor Overload
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.
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11-08-2016, 03:48 PM #2
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Re: Troubleshooting alert 18345 - Coolant Motor Overload
Thanks Al. Cleaning the contactor seems to have sorted it for now. Now have spares on hand for all three components so can substitute each incrementally if problem reappears. (And of course will check the motor with an ammeter at that point too.)
--John
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