rmac
Have a problem with a model #0047460. After starting, the RPM's increase and it even sounds like the starter if trying to re-engage. It then I assume goes into overspeed and shuts down. It only has a single red alarm indicator. I've changed the Elect.Gov and the stepper motor. Any one have any idea's? The ground is good. Could this be a bad logic board?
Quote
bronco
is it putting out any voltage?
Quote
Gman1
83048 voltage reg is bad...If your lucky. That is most likely it.
Quote
d11gnccer
Voltage regulator does not control engine speed does it? Only voltage for excitation. Have you put your meter on it to see what the frequency is as it starts and runs? What type of readings are you getting out of the flywheel sensor?
Quote
Gman1
I think that machine has uses s-15 and s-16 to sense hz at a stand alone governor controller. No output=no Hz sense= rev up and die. Restarting is because it doesn't know it is running with no output.
Quote
GEI3137
have you checked resistance to your rotor. I have found many units with this problem. Oil on slip rings high resistance 200 ohms plus. I believe it should be around 25 ohms. Clean slip rings and brushes and check for proper resistance before you put it back together.
Quote
hoghead
model 4725-3

sparks are coming from around starter/fly wheel
unit starts runs for 10 sec or so and shuts down
voltage is around 40v
Quote
hoghead
rmac , did u have any luck with your unit. I have the same problem.If i hold stepper motor half way unit will run and produce voltage,when i let go of stepper motor it will either die out or take off and then shut down.
Quote