ECL – OPERATION
Each Engine Control Lever (ECL) is mechanically connected to the FMM via
teleflex cables.
Whenever the ECL is at OFF, the manual shut-off valve in the FMM is closed
and the engine, if running, shuts down. A mechanically detent at MIN
position prevents accidental engine shutdown when retarding the ECL: to set
the ECL to OFF position it must be pulled down and moved backwards.
The ECL is required to be in FLIGHT position for normal engine operation
(AUTO mode). While engine is in AUTO mode, a position sensor inside the
ECL controls the activation of the 1(2) ECL POS caution message in the
CAS if the ECL is not at FLIGHT; the same device provides an interlock to
prevent moving the ECL beyond FLIGHT position.
When the engine is operated in MANUAL mode, engine power can only be
adjusted by moving the ECL: the interlock circuit is disabled (ECL can be
moved through its full range from MIN to MAX) and the 1(2) ECL POS
caution message is suppressed.
During manual operation, either for training or in an emergency, the pilot has
full authority to increase or decrease the engine power by moving the ECL.
The amount of travel required for a certain amount of power, change is
proportional and linear in the complete range of ECL.