Schempp-Hirth Ventus-3M Performance, Предварительное руководство по эксплуатации самолета

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SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3M „Performance“ FLIGHT MANUAL
March 2019 CS 22
Revision – 4.2.3.6
Input of the fuel content in the wing fuel tank(s) into the power plant operating unit
A manual input of the fuel quantity is only necessary when using optional wing
tank(s).
The prerequisite for the entry is a displayed fuel quantity of at least 6 liter in the
fuselage fuel tank (reserve quantity). If there is less fuel in the fuselage fuel tank,
the operating unit will not accept an entry for the content of the wing fuel tank(s)
(safety measure).
Input method for the amount of fuel in the wing fuel tank(s):
o
With the engine retracted (retract limit switch must be actuated), use the rotary
switch to scroll through the main menu of the operating unit into the FUEL
MENU and select WING TANK.
o
Change the number of liters with the rotary switch until the fuel content in the
wing tanks is displayed. Confirm the value by pressing the rotary switch and exit
the menu.
o
If the rotary switch is not operated for more than 5 seconds, the operating unit
accepts the entered value for the fuel quantity and automatically returns to the
normal operating mode.
If the entered value for the fuel content in the wing fuel tank(s) is greater than zero
and the fuel content in the fuselage tank is not 6 liter or below, the change in the
fuel content on board during engine operation is calculated.
An internal comparison with the actual remaining fuel content is only made when
the reserve quantity in the fuselage tank has been reached or fallen below. The
value for the fuel quantity entered in the wing tanks is then automatically set to
zero.
The manually entered value for the fuel quantity in the wing fuel tanks is stored by
the operating unit and remains stored even after the main switch is switched off.
Caution:
If no wing tank(s) are installed or if the content of the wing fuel tank(s) is not to
be taken into account when calculating the amount of fuel on board, the value
for the amount of fuel in the wing tanks shall be set to zero. Otherwise the fuel
quantity on board may be displayed grossly incorrectly until the reserve
quantity in the fuselage fuel tank is reached!