ENSTROM 280FX OPERATOR’S MANUAL 7-7
Rev. 9
Report No. 28-AC-020 Nov 5/13
2. Tapping the LF button initiates the EDM-700 LeanFind
mode to assist leaning. The LeanFind mode is more effective
on normally aspirated engines than turbocharged
installations. LeanFind mode will allow TIT to briefly exceed
published limits; therefore, use of this mode is not
recommended.
Tap the STEP button to terminate the LeanFind mode and
change to Automatic mode.
NOTE
Limits will reset to factory defaults when the
display is switched between Fahrenheit and
Celsius.
3. The EDM-700 has programmable alarms. The alarm limits
are based on factory default settings but may be modified.
Recommended alarm limit values are defined in Table 7-1.
The operator may choose to reduce these to provide
additional margins or increase engine life. Lycoming and
various industry groups have additional guidance.
Tapping the STEP button will clear the alarm from the
screen for 10 minutes. Holding the STEP button until the
word OFF is displayed will turn off the alarm until the EDM-
700 power is cycled off then on.
Table 7-1. EDM-700 Recommended Alarm Limit Values
Parameter Description
Recommended
Limit
CHT Cylinder head temperature 500°F (260°C)
TIT Turbine inlet temperature 1650°F (900°C)
CLD Cylinder head cooling rate -100°F/min
(-55°C/min)
DIF
Difference between highest
and lowest EGT values
500°F (280°C)
H BAT Battery high voltage limit 30.0V
L BAT Battery low voltage limit 24.5V
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