On 12/10/2011 5:44 PM, Fmiser wrote:
Dan Penoff wrote:
Actually, you can do what is known as "automatic changeover"
with a simple relay, a pressure switch and another solenoid
valve.
Hmm. An electric relay and an electric solenoid... How does
that work when the electricity is missing? A UPS for the
generator system?
Or is this one of those "big" systems with an generator that has
an electric starter so there would have to be a battery anyway.
-- Philip
Nothing much is going to be automatic without some form of starting
mechanism.
My old and inexpensive generator has electric start and some form of
relay setup that knows when the power goes off. That then triggers the
start motor to get the unit up and running - at least in theory.
It even has a block heater so that the engine has a chance to start in
the cold weather.
Randy
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