Sennheiser SI 234 - ANNEXE 802 Operations Instructions Page 385

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DA 42 NG AFM Airplane Description
Doc. No. 7.01.16-E Rev. 3 01-Apr-2014 Page 7 - 37
Fuel Selector Valves
For each engine one fuel selector valve is provided. The control levers for the fuel selector
valves are situated on the center console behind the power levers. The positions are ON,
CROSSFEED and OFF. During normal operation each engine takes the fuel from the
tank on the same side as the engine. Before crossfeed operation check fuel pump is OFF.
When CROSSFEED is selected, the engine will draw fuel from the tank on the opposite
side in order to extend range and keep fuel weight balanced during single engine operation.
With the fuel selector valve both the feeding and the return line are switched.
The desired position is reached by pulling the lever back. To reach the OFF position a
safety guard must be twisted. This is to ensure that this selection is not made
unintentionally.
NOTE
If one engine is inoperative the fuel selector valve for this
engine must be in the OFF position.
CAUTION
Do not operate with both fuel selector valves in crossfeed
position. Do not take-off with a fuel selector valve in crossfeed
position.
CAUTION
Do not shut down an engine with the fuel selector valve. The
high pressure fuel pump can be damaged.
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