I have a single phase cutting SAW , 3 years old , yesterday i was cutting thick material it stalled as usually happens , but when i turn it off and then On again now it doesn't rotate , it just makes a humming noise .
motor type :
1-AC single phase 220v 2KW motor .
2-it has 6 wires coming out of the motor 2 red 2 black and 2 green wires .
3-Capacitors 200uF 250v and 35v 400v .
steps that i have done :
1- tested capacitors using FLuke , 200uF measures 220uF , and 35uF measures 22uF.
2- tried rotating motor by hand , i runs smoothly and freely ( no bearing problems and such)
3- i disassembled the motor , it is surprisingly very clean from inside , the centrifugal clutch seems OK , the contacts are clean , i wiped them and re-oiled them and continuity test seem OK ( the 2 green wires ) .
Question : and what could be the problem ? is it a shorted winding and how to know exactly
thanks in advance ...
As advised by the commenter , i made some tests using an LCR meter ( with 100hz lowest frequency) it appears that the stator coil from black wire 1 to black wire 2 has 30mH inductance . BUT from Red to red which is supposed to be the main Coil there is very high inductance (3000 Henry) and resistance is in the Mega Ohm range. I donot know if this is an indicator of short coil or open coil maybe the connecting wire is broken ?? does anyone has know how to fix this ?