MachinistBlue
Aluminum
- Joined
- Oct 11, 2014
- Location
- Ellicott City
My 10EE with motor/generator set started doing something strange yesterday.
While turning a socket, the machine started to sort of pulse or spin irregularly. I was turning the spindle slowly so I thought maybe something weird due to that. I turned up the speed and still the machine behaved this way although the effect is much worse at lower spindle speeds. It did not seem to matter if I was cutting or not. I would say it pulses (running slower)about once every 1-2 seconds. I can turn down the speed such that the spindle completely stops.
I saw a clip where someone had the contactors in the DC control box come apart (from a power resistor going bad). I took the cover off to see if this was happening but it was not. I have replaced those resistors in the past.
My first suspicion was to go clean up the brushes on the exciter. Am I going down the right rabbit hole?
Thanks for any help.
-Walt
While turning a socket, the machine started to sort of pulse or spin irregularly. I was turning the spindle slowly so I thought maybe something weird due to that. I turned up the speed and still the machine behaved this way although the effect is much worse at lower spindle speeds. It did not seem to matter if I was cutting or not. I would say it pulses (running slower)about once every 1-2 seconds. I can turn down the speed such that the spindle completely stops.
I saw a clip where someone had the contactors in the DC control box come apart (from a power resistor going bad). I took the cover off to see if this was happening but it was not. I have replaced those resistors in the past.
My first suspicion was to go clean up the brushes on the exciter. Am I going down the right rabbit hole?
Thanks for any help.
-Walt