M
Ingenieurbüro CAT, M. Zipperer GmbH +49-7634-5056-800
Wettelbrunner Straße 6 sales@jetcat.de
42
79282 Ballrechten-Dottingen www.jetcat.de
GERMANY
b.
Move the throttle trim lever to its maximum position.
c.
Set the AUX switch to the middle Start/Standby position. The engine is now ready to start!
d.
Advance the throttle stick to its maximum position and the engine will start.
e.
Once the engine begins to accelerate, the throttle stick can be returned to idle position.
f.
When the throttle stick is set to the maximum position, the ECU will begin a fully automatic starting
sequence. This starting sequence can be immediately stopped at any time by moving the AUX switch
to the Off position and/or reducing the throttle stick and trim to the minimum positions
g.
To stop the engine after it is running, set the AUX switch to the Auto-Off position. The engine will
increase RPM above idle, stabilize and then shut off. The auto-cool down mode will start when the
engine has nearly stopped rotating.
4.
As soon as the engine stabilizes at idle speed, the green OK LED will illuminate, indicating that thrust control is
now handed over to the pilot. The throttle stick must be in the idle position for the green OK LED to
illuminate.
After the start process is initiated, the following occurs:
1. The Kerosene-Igniter is pre-heated for approximately 5 seconds (the starter motor is not running).
2. Next, the starter motor spools up the engine to a constant speed and then starting fuel pulses into the engine
until the combustion chamber rises above 120 degrees C. The yellow Standby LED will illuminate when the
starting motor engages. Should ignition not occur, after a 30-second period, the process is aborted and the
green OK LED will blink.
3. Turbine RPM will progressively increase until achieving stable speed. When the engine speed surpasses the
idle RPM value, the starter motor disengages and the yellow Standby LED goes out.
4. As the engine approaches its stabilize RPM, it will briefly dwell, before automatically decelerating to idle RPM.
5. When the engine attains idle speed and the throttle stick is placed at idle position, the green OK LED will
illuminate, indicating that thrust control is now handed over to the pilot.
Automatic Cooling Process
After the engine spins down from Auto Off or Manual Off, the starter motor will spin the engine rotor at a slow
constant speed until the Exhaust Gas Temperature is below 100 C.
When initiating a start, the LED’s will blink in a continuous sequence of green to red to yellow. If
the throttle stick is above minimum position when initiating a start sequence, the LED’s will blink in
a continuous sequence yellow to red to green indicating an error. Bring the trim to the maximum
position and the throttle stick to the minimum position and this will correct the error condition.
ATTENTION!
Two channel control only:
In unsafe situations (e.g.: a 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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