Avidyne Entegra EX5000, Руководство пилота

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PA34 Lean Assist
600-00121-001 Rev 01 -105- Entegra EX5000
10.4 PA34 Lean Assist
The EX5000 is equipped with a Lean Assist function that allows you
to set the optimum mixture for cruise conditions. The EX5000
provides visual messages to guide you toward the correct mixture
setting.
Lean Assist for both engines is initiated by the Lean Assist button, but
the engine parameters for each engine are monitored separately.
Check the
Pilot Operating Handbook for your aircraft for guidance as
to the proper technique for leaning both engines.
The Lean State is displayed in the “Lean” data block on the Map
page.
1) To lean the engine for the cruise setting, begin by pressing Lean
Assist and smoothly lean the mixture control. Only undertake
leaning at power levels below 75%.
2) The EX5000 will annunciate “Looking for Peak” for each engine
(L and R) at the top of the temperatures section of the display.
!
It is very important that you adjust the mixture slowly and
continuously. Leaning the mixture too quickly can disrupt the
EX5000’s ability to accurately track the peak TIT, and could
result in a mixture setting that can damage the engine.
!
Caution: If any of the CHTs exceed 435°F or if the TIT
exceeds 1660°F, the Lean Assist function will be halted.
Reduce power and enrichen the mixture immediately.
!
If at any time during the Lean Assist process the engine
begins to run roughly, richen the mixture until the roughness
abates.
Note : Lean Assist is exited if Fuel Flow or Percent Power is invalid. The
message “Lean Assist Disabled” displays at the top of the temperatures
section.
Note: If the percent power display is not available, consult the aircraft
POH performance charts to determine current aircraft percent power
prior to engine leaning.