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Genie over-cooling problem

PostPosted: Tue Dec 07, 2010 1:51 am
by alchemy
Ample Power, While addressing the stalling problem, a problem that had been getting to be more of an issue has gotten worse. I am unable, without way too much problem, to get the Genie to a proper operating temperature range. Thanks for your help. Dick
Equipment:
A DC generator, the Ample Power Genie, model G12-150, using:
Kubota EL 300-E2-ER. code #, 1G106-00000. s/n, 5E0998, model # E300-ES attached to a 150 amp, 12 volt alternator with a remote diode pack (rectifier).
Raw water pump was a 3.3 gpm pump, recently swapped (6 Dec 2010) for a 1.1 gpm pump.
Fresh water is pumped through a 12g water heater controlled (till 8-10) by a Smart Temp controller. Circulation is now under manual control.
The unit has 850 hours of use. It is not in a sound box.
History:
I have always been concerned that the GS took a long time to reach operating temperature. I was told this was normal and so disregarded the 20+ minutes it would take to reach 190 degrees. Over the last 2 years it has gradually become more difficult to reach operating temp. Fot a while I attributed this to cooler water, but something more is going on.
What done:
This summer we were in cooler water than usual (70 deg). Mid summer I became concerned about low operating temps and manually took over the operation of the fresh water circulation pump (to the water heater). This helped (still took 20+ minutes to reach operating temperature), but without the fresh water circulation pump turned off, I would never have gotten the GS to 190 deg.
The last few weeks, unable to ask full load of the GS because of a stalling problem being addressed in another Ample problem stream, the overcooling is worse.
Yesterday, I replaced the 3.3 gpm raw water pump with a 1.1 gpm pump. I ran the GS for 60 minutes (in 60 deg water) with the new 1.1 gpm raw water pump moving raw water through the GS. It took 45 minutes before reaching 190 deg. The fresh water circulating pump was not activated. The load was limited to 125 amps and kept higher than usual by means of heating water through an inverter, thereby keeping a 70 amp draw on the battery bank duing the charging.
Taking temperature readings at various points on the GS (with an infrared pyrometer) seem to indicate that the temperature gauge is working and accurate.
Thank you very much for your thoughts, Dick Stevenson, s/v Alchemy

Re: Genie over-cooling problem

PostPosted: Sat Dec 18, 2010 11:18 pm
by alchemy
I seem to have been lost in the shuffle, in both this and the other thread I stated, and I am not sure how to return to being responded to. Dick

Re: Genie over-cooling problem

PostPosted: Mon Jan 03, 2011 11:16 pm
by alchemy
I seem to have been lost in the shuffle, in both this and the other thread I stated, and I am not sure how to return to being responded to. Dick