I am rewiring a Mec Brown 415v dual speed cold saw, replacing the speed change switch, and the Pedrazolli wiring diagram that came with the new switch doesn't work !!! One speed works ok, the other growls slowly backwards.
I have previously proved the motor ok by hard wiring both speeds and plugging in but I can no longer find the web site where I found the wiring data. Help !!
The motor has 6 terminals :
"Z - X - Y" on the top row "U - V - W" on the lower row
I know that for one speed, three terminals are wired together and the three phase applied to the other three terminal but cannot remember the other speed's wiring .... help please !