SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Arcus M
FLIGHT MANUAL
Engine control unit MCU II (continued)
a)
Overview of readouts and control elements
(7) Ignition switch: (continued)
Note:
To start the automatic retraction process of the power plant with
switching off the ignition the rpm of the engine has to meet the following
conditions:
- the engine rpm has to be greater than 4000 for at least 10 s before
switching off the ignition and
- the engine rpm has to be greater than 2000 while switching off the
ignition
If one of these conditions is not met, the automatic retraction process of
the power plant will be stopped and on the LCD-Display the message
“BRAKE?” appears.
If this message is confirmed by pushing the Menu push-button, the
automatic retraction process will be continued.
Note:
To retract the power plant automatically after the propeller stops, the
propeller has to be in its vertical position:
- During the automatic retraction process of the power plant the
position of the propeller is monitored by proximity sensors on the
upper belt pulley. The propeller is hold in its vertical position with the
aid of an electrical driven brake servo.
- With a defective brake servo and/or defective proximity sensors the
pilot can stop and hold the propeller in its vertical position by
actuating the manual propeller brake. The position of the propeller
has to be checked with the rear-view mirror.
Oktober 2011
Revision --
7.3.6
