[HAM] Alignment of Start Motor. Warning about exposed AC mains

OF scott195 at centurytel.net
Sat Mar 24 10:09:58 CDT 2007


At 02:22 AM 3/24/2007, Kon Zissis wrote:

>, Kon Zissis wrote:
> >there is an exposed   solder terminal  on the plastic bobbin of the
> >start motor coil  and there is always live AC voltage on this  solder
> >terminal  even when the organ is switched off.
>
>Scott Hawthorn replied:
> >Preposterous!
>
>Hi Scott and everyone.
>The start switch and the run switch  are both  single pole switches that
>either switch on or off only the  AC neutral  voltage signal whilst the
>unswitched live AC active signal  goes directly to one end of the coils
>of the start motor , the run motor and the primary winding of the power
>transformer as shown on the AO28 schematic.
>
>I just double checked the wiring of my 1962 C3  which runs on the
>Australian 240 volts / 50 Hz system  and the start switch and the run
>switch control the  AC neutral voltage signal ( blue wire ) whilst the
>AC active voltage signal ( brown wire ) is always present at the
>unswitched side of the start motor coil and the  run motor coil and the
>primary winding of the power transformer.

I was under the impression, perhaps false, that the blue wire is the hot 
side. Of course, with unpolarized plugs this is practically meaningless.




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