Constant rumble on low RPM
( video 04_213.wmv)


2 bangs per revolution
( video 07_244.wmv)


Aug. 8th Final bad news. Machine refuses to run.
( video 06_241.wmv)


The next morning. Machine refuses to reach 3500 RPM
( video 08_245.wmv)


Machine starts, runs at 5000 RPM and stops without any problem .
( video 01_210.wmv)


Machine stops from 5500 RPM with rumbling.
(video 02_203.wmv)


Starting and stoping the machine. Rumbling on start, then smooth run, rumbling on stop. Also spindle hesitation while starting the motor.
( video 03a_212.wmv)


Tool change with hesitation. Rumbling on start but runs quiet.
( video 05_217.wmv)
 To view in full size click on the photograph below.

Vector drive info.
Machine info.
Motor info.
No transmission



I hope these videos and photos will be helpful.
If more is needed my e-mail address is voytek@duraconinc.com

Is there any good soul that could help me to solve the mystery?



****************************************************************************************************************************************  Second set of pictures. To view in full size click on the photograph.

Magnetic sensors?
Wye/Delta
Motor overload relay.
Naked Vector drive.


New video
Playing more with the machine
( Post2.wmv)
Warning: This is a large 21.0 Mb file





****************************************************************************************************************************************


Molex connector
Wye/Delta relay wiring


Rumbling on Low and High range
( Low_High.wmv 40.0 Mb file)









Thanks !