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SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Arcus M
FLIGHT MANUAL
Electrical system (ctd.)
Gliding avionics
Using a selector switch, power may also be provided by the power plant battery.
A main switch controls the power sources for power plant and gliding avionics.
Power plant
The engine features a breakerless, map-controlled double-magneto ignition.
Power is provided by the 12 V battery located at the cockpit steel tube transverse
frame see page 7.12.3 "ELECTRICAL SYSTEM -POWER PLANT".
It is controlled by the power plant master switch (70 A circuit breaker) and its
voltage is displayed by the engine control unit MCU II. By using a selector switch,
this battery may also be used for the gliding avionics.
The battery is recharged by an AC-generator via a rectifier regulator, however, it
may also be charged from an external power source via a charger socket provided
on the left side in front of the rear seat.
With power plant master switch "ON", various signals and values may be obtained
from the engine control unit MCU II.
A description of this unit's various functions and of all other power plant control
elements including their interconnections is given in section 7.3.
October 2011
Revision --
7.12.2