Hostile
Plastic
- Joined
- Jan 26, 2008
- Location
- W. Palm Beach
I've got an old Wells Index 747 with type 90 power feeds. When I got the mill the power feeds didn't work. After replacing some micro switches everything was fine. The other night I noticed the "y" axis feed started tripping the breaker which eventually ended up destroying the breaker. I pulled it apart and replaced the SGRs and now I don't have the tripping condition but I have no movement at all.I've measured voltage at the brush holders and it's reading around 60v regardless of the position of the speed knob. So I have three questions: 1) Does anyone have a schematic for the IC Board? 2) Am I correct in thinking that the drive motor is an A/C reversible induction motor with full wave rectification and 3)What peak voltage should I be detecting at the brush holders. Thanks!