Kohler RES generators [RE-wrenches]

[Matt Tritt]

We won't sell the 3600 version of anything, even Kohler. The 1800 units
have far better torque and load response, are quieter, use less fuel and
are more robust in all aspects.

If you can't find a comparable unit may I suggest Lister-Petter? They
are great (but expensive) machines. The smaller units (7 kW) are only 2
cylinder and have some vibratory issues, so I go with the 12 kW, 3
cylinder version whenever possible.

Matt T

-----Original Message-----
From: Jeff Yago [mailto:jryago at wwjv.net] 
Sent: Friday, March 05, 2004 11:05 AM
To: RE-wrenches at topica.com
Subject: RE: Kohler RES generators [RE-wrenches]


We recently replaced an 1800 RPM older model 8.5 with a newer version
3600 RPM unit.  Client wanted to save money and the dealer was offering
a really good deal as they were tired of driving 4 hours each way to
service the older unit.

Nothing else changed on this total off grid summer home in the woods.
Same SW4024 inverter, same sixteen L-16 batteries, same Outback dual
power point controllers, and same two separate solar arrays.

BUT:

As soon as the generator was replaced we starting having generator
"error" lights on the inverter and the inverter would no longer complete
a full equalize charge.  We checked everything and lowered charging amps
and generator capacity setpoints which helped some but did not
completely resolve the problem.

It is my belief that the low RPM Kohler had higher torque and spool up
response than the 3600 RPM replacement, and regardless of nameplate
rating, the newer unit was never able to meet the settings of the older
model.

Hope this helps -

Jeff Yago
Dunimis Technology Inc.

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