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How to flash an AC generator

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Posted by Chuck Jurgens on August 12, 2007, 3:57 pm
I bought a 6000 watt home generator new and ran it twice.  Haven't had
occasion to use it in the past 4 years.  Started it up the other day and the
engine ran fine but the generator won't produce power.  It was working fine
when I last used it.

I was told that it needed to be flashed.  Can anyone tell me how to do that?



Posted by Michael A. Terrell on August 12, 2007, 5:15 pm
Chuck Jurgens wrote:

   Do you have the owners manual?  It should describe how to do it.

Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

Posted by <nni/gilmer on August 12, 2007, 8:59 pm
 This begs the question as to WHY a previously working genertor would need to
be flashed in the first place?

The rotation iron always magnitized in the same direction so what even could
cause it to lost its residual magnitism to the point where it can't
"bootstrap" up from near zero but NOT zero magnetism?


Posted by Anthony Matonak on August 12, 2007, 11:36 pm
 nni/gilmer@nni.com wrote:

The residual magnetism in the iron will weaken over time. After a few
years it can be too weak to bootstrap the generator.


Posted by Hugemoth on August 12, 2007, 11:47 pm
 Here's how I have always done it...

Get to the brushes and disconnect them from the circuit board or
rectifier. Connect jumper leads to a 12V battery then connect them to
the brushes for a few seconds. Polarity doesn't matter. That's all there
is to it.


Anthony Matonak wrote:

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