Fellow Botters
The VFD error “EF” gremlin is still haunting my Desktop.
Tech support and I agree that this may be caused by the Spindle Overheating.
We have pretty much eliminated the normal electrical issues.
My Desktop has an HSD Spindle, with what I thought was a fan attached to the top of the spindle.
I removed the black end of the spindle thinking it was a fan to send to Shopbot for testing. When I actually removed the end cap of the spindle I discovered that it was not actually a fan. The black end cap was covering an impeller attached to the end of the spindle shaft and turned with the shaft.
When turning at even 14,000 rpm I can’t determine any airflow being generated from this impeller. Are any desktop owners equipped with a HSD spindle able to determine any air flow or does it seem to only rely on the movement of air by convection?
My HSD spindle is also reaching temperatures of 160-170 degrees F, tech support say it should not be over 140 degrees F. Do any of your desktop spindles reach 160-170 F? How does your spindle get cooled?
Thanks