Page 48
Engine Data Management
Section 14 - Alarm Limits
Factory Set Default Limits—Non-Primary
JPI
conservatively sets the default alarm limits below Lycoming and
Continental recommendations.
Parameter
Default Low Limit
Default High Limit
Alarm Example
CHT
450°F
230°C
465
CHT
OIL
90°F
32°C
230°F
110°C
280
OIL
TIT
1650°F
900°C
I 720
TIT
CLD
-60°F/min.
-33°C/min.
-65
CLD
DIF
500°F
280°C
525
DIF
BAT, 24 V
24V
32V
22 .4
BAT
BAT, 12 V
12V
16V
I7.6
BAT
MAP
42 inches
46.3
MAP
LO FUEL
45 min
00.20
H.M
LO TIME
10 GAL, KG, LTR, LBS
7.2
REM
If you change the display between Fahrenheit and Celsius, newer
instruments will automatically change the alarms to the factory limits.
When an alarm is displayed, tapping the STEP button will temporarily
delete that parameter from the sequence for the next ten minutes. When
an alarm is displayed, holding the STEP button until the word OFF
appears will delete that parameter from the sequence for the remainder of
the flight.
Changing the Alarm Limits
You may prefer to set your own alarm limits Follow the procedure
outlined below to change any of the factory default settings.
To start the alarm limit procedure, after power up, wait until the EDM
completes its self test and is in the Automatic or Manual mode. If in
doubt, tap the
STEP
button a few times. Then follow the steps depicted
here: