Turbine Stopping / Cool Down
To shut off the turbine, there are two methods:
Manual Off
Turbine immediately turns off!
At anytime, the turbine can immediately be switched off manually by:
• setting the three-position AUX switch to Off
OR
• bringing the throttle stick and trim to there minimum positions
Auto Off
Turbine automatically turns off!
This is the normal way of shutting down the turbine:
When the three-position AUX switch is moved to the Auto-Off position, the following
happens:
The turbine automatically stabilizes at around 55,000 RPM, for approximately six
(6) seconds, before shutting down. This allows the turbine to run at an optimal
temperature, drawing in a large quantity of cool air through the turbine, as it shuts
off. This automatic off function can be discontinued at any time, by returning the
AUX switch back to the Start/Standby position, before the turbine shuts down.
Automatic Cooling Process
After the turbine spins down from Auto Off or Manual Off, the starter motor will
periodically spin the turbine rotor, if the Exhaust Gas Temperature is above 100° C.
This happens at regular intervals, for about one minute or longer.
, Extremely Important:
In unsafe situations (e.g.: a model fire), the automatic cooling process may
contribute additional oxygen. To immediately discontinue the cooling process,
bring the throttle stick to idle, throttle trim to the minimum position and the AUX
switch to Off.
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