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My installation has
2 EWP's with the primary pump speed controlled by an electronic controller and
the secondary pump controlled by an on/off switch. I had been concerned about
the failure mode of this controller (fail on or off ?), so I'd wired a DPDT
switch to the power input to the controller giving me auto/on positions on the
switch. This would allow me to bypass the primary pump controller in case of a
failure.
Well once again in my infinite wisdom, and being cold and in a hurry to finish
up a few minor details so we could go do a taxi test, I was installing a jumper
to supply power for a new EBP switch reaching up behind the panel working by
feel (hey it's hard enough to get under there without winter gear on) and for
some dumbass, unexplained reason, not disconnecting power, when I suddenly
inadvertently shorted my screwdriver to the hot jumper and the ground side of
the EWP controller DPDT switch, Doh! Fuses blew, I cussed and replaced fuses and
found the primary EWP to be pumping at full speed when stone cold engine temps.
So apparently my EWP controller is T/U but failsafe is on, so this is good news.
I'll remove the controller in the spring and try to isolate the blown component,
but in the meantime can just fly with full primary EWP flow.
Unfortunately @ -15C, full power climb could only produce engine temps of 140F.
Descent temps would drop to <100F
I have a few other
items to discuss from this flight, but I've gotta get some sleep right
now.
Todd Bartrim (suffering from 2 broken ribs due to
hockey ;-(
RV9Endurance
13B Turbo Rotary
C-FSTB
"The world will always have a place for those that bring hard work and
determination to the things they do."
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