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Martin Riddle Martin Riddle is offline
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Default Powermate generator from SED


"Oppie" wrote in message
...
Just got a schematic from Pramac - current owner of the Powermate
brand.
It's an Italian company. Homelite owned the brand for a while.

Sort of threw me when I looked at the schematic. PWR1 and PWR2
windings are
the output of the generator (110/220V). AVR is the Automatic Voltage
Regulator which may be part of the problem. EX1/EX2 look to be part of
the
stator and provide AC to the rectifier / Cap which in turn feeds DC to
the
AVR module. Would guess that the field winding (armature) is the coil
marked
+/- at the bottom. Not shown but it is fed by brushes. This is not a
brushless generator.

"Module I.C." is the automatic Idle control that drops engine to idle
when
there is no load. Commonly used on construction sites when driving
only one
large tool.


============
Need to troubleshoot a broken generator.
Powermate Vertex 7500W
Model PM0557523.9

Found owner's manual and parts list but no schematic / wiring diagram.

Anybody have some resources? The usual googling just gave me more of
the
same. Tried re-exciting the field to no avail. lead had come off of
the
capacitor and looks to have been sparking against something. Trying to
make
sense of what might have failed.




What does it not do?

If no output is the first guess, try flashing the field.
Disconnect the EX connection and feed 12V DC into one of them. Will
setup a mag field and allow everything to start up.

Cheers