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Randi Scott (Superand)
Registered Member
Username: Superand

Post Number: 11
Registered: 1-2008
Posted From: 76.16.217.65


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Posted on Sunday, November 15, 2009 - 5:52 pm:   

hey everyone -

i have the above mentioned gennie in my eagle. no inverter, so it's on all the time. i just came home from a run cause the gennie became intermittent in sending juice into the coach. the motor itself always ran, but i would have electricity for 2hrs then nothing for 45 minutes, then on again for 30 seconds, then off for 30.... at best, it stayed on for a 12hr period. i shut everything down, however, when it sent TOO much juice into the bus and fried a 50amp breaker (which started to smoke - almost a fire). i did have the opportunity to plug into some shore power and confirm that my prob was at the gennie itself. everything worked perfect with shore power.

SO - my question is ..... voltage regulator? stater/exciter ?? has anyone ever had such issues? i don't have the $92.50/hr to have it looked at by someone who doesn't "normally" work on these things .....

any help is greatly appreciated!!
Donald P H (Eagle19952)
Registered Member
Username: Eagle19952

Post Number: 12
Registered: 11-2007
Posted From: 75.251.220.184

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Posted on Sunday, November 15, 2009 - 9:36 pm:   

Do you have an automatic transfer switch ?
Debbie and Joe Cannarozzi (Joe_camper)
Registered Member
Username: Joe_camper

Post Number: 194
Registered: 10-2006
Posted From: 98.212.104.155

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Posted on Sunday, November 15, 2009 - 9:39 pm:   

I have a similar gen a 15 K Kabota and I have been thru a couple of things.

Mine quiit generating turned out it was very dirty and a cleaning and a flashing and it came back to life.

On ours it ment pulling it out hard and then cleaning easy and flashing easy (pos to pos neg to neg at the rectifier).

About a year later it started flickering and acting eratic and after inspection the rectifier mounting screw was loose and I believe the rectifier needed that tight to be grounded cause after that It has been flawless.

Good luck
George M. Todd (George_mc6)
Registered Member
Username: George_mc6

Post Number: 926
Registered: 8-2006
Posted From: 99.39.13.151

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Posted on Sunday, November 15, 2009 - 9:40 pm:   

Randi,

I doubt that your problem is in the generator, most likely the breaker that burned was the problem.
Is that breaker in the output circuit of the generator only?
If the voltage regulator failed and sent too much voltage "into" the bus, things would be damaged from over-voltage, and a properly operating breaker would have tripped. So..

Change the breaker, and whatever else burned up around it.

Tight connections don't burn off, loose ones do, so REALLY tighten all the connections!
G
R.C.Bishop (Chuckllb)
Registered Member
Username: Chuckllb

Post Number: 970
Registered: 7-2006
Posted From: 70.210.223.199

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Posted on Sunday, November 15, 2009 - 10:01 pm:   

Great advice, George....and guess what...think you might have just "solved" a problem I am having on my Onan....:-)

Thanx!!!!
RCB
John (John_t)
Registered Member
Username: John_t

Post Number: 13
Registered: 10-2009
Posted From: 66.244.97.31

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Posted on Monday, November 16, 2009 - 9:12 am:   

Although I'm NOT bus experienced, as a retired EE Ive had electrical experience. The smoking circuit breaker would have made me nervous!!! Sure gensets may need cleaned and require regular preventive maintenance, but while she was under a load and working then quit coupled with that smoking breaker (assuming it was the gennys output?) your problem sounds more external to me. Many circuit breakers are combination thermal and magnetic meaning a long continuous current draw which exceeds or is near the rating causes them to trip THERMALLY while a sudden high current discharge (a short) trips them MAGNETICALLY.

Its a good practice to EXERCISE a breaker now and then and often its NOT the breaker BUT a loose, burned, corroded or carboned up connection that causes the problem. I agree with the above, I would check all connections at the genset and panel and breaker and look for carbon or evidence of excess heat and re tighten each and every conenction and neutral and ground and install a new breaker and give her a go and see what happens. Of course it sounds like a good time to clean up any slip rings and commutators or whatever that particular genset may be equipped with.

Ol John T in Indiana (Class C owner, only a Bus wannabee)
Prather Ellsberry (Prather)
Registered Member
Username: Prather

Post Number: 12
Registered: 10-2006
Posted From: 32.163.138.242


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Posted on Tuesday, November 17, 2009 - 9:41 am:   

I have a 12.5 PowerTech and over the years I have had various wierd problems, in each case it has been a wiring issue in the control box. Loose wire, broken wire etc. etc. etc.. So now I do a visual and physcal check of the wires every time I change oil. Prather

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