Creation: 01.31 - 2014
1-2-5
GPU - 406
D. Delivering Power to the Aircraft
(1) Connect the power cable to the external power receptacle on the aircraft.
(2) If the engine has completed its warm-up, the power outputs will be available for use.
a. Press and release the RED button to turn on the #1 400 Hz power
b. Press and release the YELLOW button to turn on the #2 400 Hz power
(only models with 2 AC cables)
c. Press and release the GREEN button to turn on the 28VDC power
(only if model is equipped with a DC cable)
(3) The engine ramps up automatically. Once the GCM has detected that the power quality is good,
the output contactor will close to allow power to the aircraft. The icon text above the output
symbol will turn green to show that the contactor has closed.
(4) External power is now being supplied to the aircraft.
E. Removing Power from the Aircraft
(1) Press and release the button below the screen symbol to the output that should be turned off.
a. Press and release the RED button to turn off the #1 400 Hz power
b. Press and release the YELLOW button to turn off the #2 400 Hz power
(only models with 2 AC cables)
WARNING:
DO NOT UNPLUG CABLE FROM AIRCRAFT BY PULLING ON THE CABLE.
PULL ONLY ON THE CABLE HEAD. INCORRECT REMOVAL OF THE CABLE
PLUG FROM THE AIRCRAFT MAY CAUSE INTERNAL PLUG DAMAGE,
INCREASING RISK OF SHORT CIRCUIT OR OTHER DAMAGE.
WARNING:
REMOVE THE AC PLUG FROM THE AIRCRAFT WHEN USING THE DC
OUTPUT TO START AN AIRCRAFT.
HAVING BOTH PLUGGED IN MAY RESULT IN BURNING THE GROUND
WIRE AND GCM BECAUSE OF OVERCURRENT IN THE GROUND WIRE.
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