Rotec AEROSPORT R2800, Operation Manual, Page: 70 / 87

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ADVERSE
OPERATING
CONDITIONS
It is recommended to service the engine prior to the cold season. Oil selection should be a consideration and viscosity
change may be necessary in extreme conditions of cold. Consultation with aviation oil supplier is recommended.
It is important to distinguish between two kinds of icing:
• Icing due to water present in fuel.
• Icing due to high air humidity.
Water in fuel will tend to accumulate in the lower portion of the fuel system and can lead to freezing of fuel lines and
associated hard ware. Remedies are:
• Drain fuel tank via fuel tank water drain.
• Use water separator or filter when fuelling in high moisture conditions.
• Install a generously sized water separator.
• Prevent condensation of humidity, i.e. avoid temperature difference between aircraft and fuel.
Carburettor Icing may occur in the venturi of the carburettor. Left unchecked, it can lead to failure of the fuel system.
Rectifying this engine debilitating condition requires directing preheated air though the carburettor intake to melt ice
away.
Slightly reduced performance is expected anytime during carburettor hear use. This includes normal operations. With
carburettor ice, carburettor heat operation may first cause the engine to lose noticeable power and run rough. It
should then smooth out and regain power as the ice clears.
Procedure:
• Carb Heat – ON. Leave on until engine is running smoothly. Change altitudes, or perform other weather appropri-
ate procedures as recommended until you are out of icing conditions
• Carb Heat – OFF.
Use of carburettor heat is recommended as part of normal landing procedures. If a go around is necessary, first insure
you have a positive rate of climb and flight conditions allow before turning the carburettor heat off. Carb heat is not
needed for normal take-offs.
WINTER OPERATION
CARBURETTOR ICING
WATER IN FUEL
CARBURETTOR ICING