Bailey Moyes 912 Dragonfly, Руководство по обслуживанию

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Page 109
used as a warning that the engine RPM is dropping too low
on the landing rollout which could result in engine stall.
Min Fuel
N/U [ 0 ]
Minimum Fuel Quantity – Generates a warning when the fuel
flow function’s fuel quantity drops below this limit. Set to at least enough useable fuel
to provide 30-60 minutes of fuel
at cruise power. Applicable only
if the fuel flow option is installed.
Min Aux (1-6)
Max Aux (1-6)
N/U[ all 0’s ]
Minimum & Maximum for Aux input. Set limit as needed depending on
the use of the auxiliary input.
Some uses of the auxiliary inputs
do not require limits (such as
manifold pressure) and some do,
such as fuel pressure.
Max H2O
N/U [ 0 ]
Maximum water temperature limit Set limit as recommended by
engine manufacturer
Min H2O
N/U [ 0 ]
Minimum water temperature limit. Intended for
troubleshooting engine problems. Also useful as an “engine
not warmed up yet” reminder.
Set limit based on experience.
Max Volt
[ 14.8 ]
Maximum Voltage Limit – Allows for detection of failed
regulator. Loss of correct voltage regulation resulting in over-
charging (and subsequent high voltage) will greatly shorten
the life of the battery, and could be dangerous. Start with 15.6 volts. Lower as
much as possible without getting
false alarms. Typical limit should
be 14.6 Volts.
Min Volt
[ 11.4 ]
Minimum Voltage Limit – Allows for detection of loss of
charging. This limit is only tested when the engine RPM is
greater than the EGT-RPM setting. This prevents false alarms
on final approach (low RPM) with landing lights on. Set limit to about 12.8 volts to get
immediate alerting of loss of
charging, although this will cause
low voltage alarm whenever
instrument is on while engine is
not running. Set to 12.4 volts or
less to avoid alarm when engine
not running, but still gives alarm
shortly after battery discharging
has begun.
Max Carb
N/U [ 0 ]
Carb temp warning is generated when the carb temp falls
between the Max Carb and Min Carb Limit. 40-60 deg F
Min Carb
N/U [ 0 ]
See Max Carb 0-20 deg F
Max EGT
[ 1480 F ]
Maximum EGT – Not all engines have published limits, nor
do all engines require a maximum EGT limit. This alarm can
be useful for troubleshooting engine problems also. Set limit according to engine
manufacturer recommendation, or
based on experience.
Min EGT
N/U [ 0 ]
Minimum EGT – This alarm is active only when the engine
RPM is above the entry for EGT-RPM. This alarm is useful
to detecting the loss of a cylinder, or for troubleshooting
engine problems. 800-1200 deg F, depending on
sensitivity desired. If false alarms
are consistently generated, reduce
the limit to less than 800 deg F,
or set to 0.
Lim-RPM
[ 3000 ]
Defines the RPM at which the following RPM dependant
limits become active. These are: Min EGT, Min Volt, Min
Crz_OP Set limit to an RPM slightly less
than the RPM used for the MAG
check. This allows the Min Volt
test to become active during the
MAG test to automatically test
for charging.
Max EgtSpan
N/U [ 0 ]
Maximum difference between the highest and lowest EGT.
This limit can be used to help detect changes in normal
engine operation. It is also useful when leaning using the
digital leaning pages, as it is possible to not notice a EGT that
is abnormally low when using these pages to lean the engine.
(Its more obvious on the bar graph pages.) Set this limit based on
experience. It may take some trial
and error to arrive at a good limit.
After establishing a limit that
rarely generates alarms,
activation of this alarm may
indicate developing engine
problem.