[HAM] Alignment of Start Motor. Warning about exposed AC mainsOF scott195 at centurytel.netSat 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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