Requirements Of The Fuel System - Rotax 912 Series Installation Manual

14.3) Requirements of the fuel system

- Delivery rate:
min. 35 l/h (8,2 US gal/h) of mechanical or electric fuel pump.
- Fuel lines: See Fig. 54.
▲ WARNING: Fuel lines have to be established to the latest requirements
Secure fuel hoses with suitable screw clamps or by crimp connection.
■ CAUTION:
- Fuel filter: See Fig. 54.
Coarse filter: on fuel tank as per valid certification
Fine filter: in the feed line from tank to the fuel pumps an additional fine filter
- water trap:
A suitable water trap must be installed at the lowest point of the fuel feed line.
- Fuel temperature:
In case of temperatures over 45 °C (113 °F) in the vicinity of fuel lines
watch for vapour lock.
If you should encounter problems in this respect during the test period, than
the affected components such as the supply line to the fuel pumps have to
be cooled.
Effectivity: 912 Series
Edition 1 / Rev. 0
BRP-Rotax
INSTALLATION MANUAL
such as FAR or EASA by the aircraft manufacturer.
For prevention of vapour locks, all the fuel lines on the suction
side of the fuel pump have to be insulated against heat and fire
in the engine compartment and routed at distance from hot
engine components, without kinks and protected appropri-
ately.
At very critical conditions e.g. problems with vapour formation
the fuel lines could be routed in a hose with cold air flow.
with meshsize 0,1 mm (.004 in.) has to be provided.
The filter has to be controllable for service. A combination of
filter/watertrap (gascolator) is recommended.
page 86
May 01/2007