Coleman Powermate Generator Capacitor.

   / Coleman Powermate Generator Capacitor.
  • Thread Starter
#12  
Thanks everyone for the suggestions and help, but problem is pretty well solved. No new capacitor needed. I found an online OP manual, and read down through it. Right in the manual it does say there are times it may not generate, if not ran for a while, and all it needs is excited with a 6V lantern battery. So I reckon' it makes it well worth the $35 I paid for it after all... :)
Coleman Generator.jpg
 
   / Coleman Powermate Generator Capacitor. #13  
Nah, you paid way too much, it will fail for sure!(I'll take it)
The problem is generally the loss of residual magnetism in the rotor, which is needed to self excite the generator. (This is due to the quality of the rotor) A lot of times this can be overcome by starting the generator and letting it run for a minute or two, with nothing plugged in to it. If the rotor has the tiniest bit of magnetism left, it will slowly build up voltage in the excitation module and self excite. If you start it and plug something in straight away, then it basically shorts out the windings and loads it up reducing any residual magnetism/excitation to zero.
So when you start it next time after sitting for an extended period, make sure everything is switched off and unplugged, start it and let it sit for a few minutes running at full speed, then try a small load and see if you have a win.
 
   / Coleman Powermate Generator Capacitor.
  • Thread Starter
#14  
Will do..!! Thanks..!!

After it started so easy when I was looking at it, I figured if nothing else, the engine was worth that to repower one of my old David Bradley's. WAY more hp than they need, but the price was right.
 
   / Coleman Powermate Generator Capacitor. #15  
Hard to use the engine for a repower as the crankshaft end is tapered.

To tell how losing the magnetism is our 20KW air cooled Generac has a flashing circuit that uses battery power to flash the field on every start up and exercise.

David
 

Tractor & Equipment Auctions

Harrell 3605 (A50123)
Harrell 3605 (A50123)
2019 CATERPILLAR D6T LGP HI TRACK CRAWLER DOZER (A52705)
2019 CATERPILLAR...
2025 SDLANCH IRGC40 UNUSED Electric Tricycle (A53117)
2025 SDLANCH...
2020 Massey Ferguson 1840 Small Square Baler - High-Performance Hay Baler (A53473)
2020 Massey...
2010 DODGE RAM 2500 FLATBED TRUCK (A51247)
2010 DODGE RAM...
UNUSED Folding 4-Step Stool Ladder (A53117)
UNUSED Folding...
 
Top