lectrician1
Hot Rolled
- Joined
- Mar 6, 2012
- Location
- Las Vegas
I installed a 115v variable DC power supply to replace the failed exciter. the machine seemed to be working fine although i only ran it a few times. Now it has developed a problem starting. The machine will start flawlessly 10 times in a row at all different RPMs. Then for no apparent reason, I will try to start the spindle at around 800rpm and the generator slows down severerly and cannot start the spindle motor. The spindle won't start unless I turn the variable speed down to about 500 rpm.
Then the problem seems to go away for a while. then it returns again.
I thought it might be a problem with the variable speed rheostat, so I sprayed DE-OXIT on the coils but no change.
I just got this machine so the problem might have existed before I added the new power supply.
Is there a starting winding on the generator with a centrifugal switch that may be sticking or something like that?
Thanks
Rich
Then the problem seems to go away for a while. then it returns again.
I thought it might be a problem with the variable speed rheostat, so I sprayed DE-OXIT on the coils but no change.
I just got this machine so the problem might have existed before I added the new power supply.
Is there a starting winding on the generator with a centrifugal switch that may be sticking or something like that?
Thanks
Rich