Overspeed test with the engine
at standstill
Note: Overspeed test with the engine at standstill
can only be carried out if the engine is equip-
ped with engine monitoring unit.
1. Press OVERSPEED TEST illuminated pushbut-
ton (3). Observe speed limit and speed simu-
lated by engine monitoring unit on display.
Result: • Engine control system is disconnected
from power supply by the safety system.
• Engine control is deactivated.
• Engines with emergency air-shut-off flaps:
Flaps close;
• EMERGENCY STOP illuminated pushbutton
(2) flashes; Alarms (horn, flashing light
etc.) are triggered. ALARM ACKNOWLEDG-
MENT illuminated pushbutton (1) is illumi-
nated brightly.
2. Press ALARM ACKNOWLEDGMENT button
(1).
Result: Audible and visual alarm stops.
3. Press ALARM ACKNOWLEDGMENT button (1)
again.
Result: Power supply to engine control system is re-
connected.
4. Engines with emergency air-shut-off flaps:
Flaps open.
Emergency stop simulation with
the engine at standstill
1. Open cover flap of EMERGENCY STOP illumi-
nated pushbutton (2).
2. Press EMERGENCY STOP illuminated push-
button (2).
Result: • Engine control system is disconnected
from the power supply by the safety sys-
tem.
• Engine control is deactivated.
• Engines with emergency air-shut-off flaps:
Flaps close;
• EMERGENCY STOP illuminated pushbutton
(2) flashes; Alarms (horn, flashing lamp
etc.) are triggered. ALARM ACKNOWLEDG-
MENT button (1) is illuminated brightly.
3. Press ALARM ACKNOWLEDGMENT button
(1).
Result: Audible and visual alarm stops.
4. Press ALARM ACKNOWLEDGMENT button (1)
again.
Result: Power supply to engine control system is re-
connected.
5. Engines with emergency air-shut-off flaps:
Flaps open.
MS150031/06E 2016-010 | Emergency Instrumentation (Local Operating Panel) | 229
TIM-ID: 0000008872 - 005
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