Bailey Moyes 912 Dragonfly, Maintenance Manual

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All engine limits are stored with a checksum. If the instrument determines a user setting has been lost,
it will generate a “Check Entries” message at power-up. If you see this message, carefully review all
user settings.
At power-up, the EIS will automatically select the page you have set as your favorite in the
“DISPLAY” set page. If an alarm is active, the instrument will first annunciate the alarms (requiring
you to press the right button to acknowledge them) before going to your favorite page.
Suggestion! Include in your checklist a step to turn on the instrument before starting the engine. Verify
you get a low oil pressure warning (and possibly others). This is a simple way of verifying the oil
pressure sensor is correctly measuring zero oil pressure. This is recommended not because the sensor is
prone to failure (it is actually very reliable), but because it is a very easy test to verify the most critical
engine monitoring function.
NOTE: It is possible for the instrument or its sensors to suffer various kinds of failures that can not be
detected by the self-test. It is good practice to review the various display pages periodically as
necessary to verify that the instrument and its sensors are operating normally.
4. SET PAGES – Setting Engine Limits and other User Entries
The “Set" pages are used to enter engine limits and other selections into the EIS. These pages are
accessed by simultaneously pressing the two keys marked “SET LIMITS", as illustrated in figure 2.
The use of the engine limits, and the other features controlled on these pages, are described below. All
entries on these pages are retained when the instrument is turned off. No electrical connection to the
instrument, or battery is required to maintain these settings.
Since all limits can be entered easily by the pilot at any time, it is practical to set engine limits lower
than those indicated by the engine manufacturer, but slightly higher than encountered in normal
operation. In this way, a change in normal engine operation may be detected earlier.
Minimum and maximum limits are included for most functions, even when some of the limits may
have no everyday practical use. This allows additional flexibility to assist with engine troubleshooting,
especially to help alert you to intermittent problems that would otherwise be hard to detect.
All limits must be set in the same units selected on the “UNITS” page. If you change the units (from
Fahrenheit to Celsius for example), the limits will not change, making all temperature limits incorrect
unless reset to Celsius.
NOTE: Limits that are not used should be set to zero. This disables the limit to prevent nuisance false
warnings. Some limits may not have a practical use for routine flying, but have been included to
provide additional flexibility in diagnosing engine problems. Normally these limits are set to zero.
CAUTION: While the “Set" pages are selected, the automatic warning feature of the instrument is
disabled. This is necessary to allow the pilot the ability to change an engine limit in the presence of an
engine parameter that is intermittently outside of its limit. The warning light is illuminated while the
“Set Limits” pages are selected to remind you that the warning feature has been disabled---and as a
convenient means of testing this light.
All alarms will be annunciated as described in “Using the Engine Information System”, unless
otherwise noted in the table below.