J.P. Instruments EDM-730 Pilot's Manual page 23

Rich of Peak leaning is as simple as:
A. Pre-lean your mixture.
B. Tap the LF button (verify ROP appears).
C. Lean mixture until LEANEST flashes (peak found).
D. Enrichen to the desired value 'Rich Of Peak'.
R Procedure
Establish cruise at 65
1
to 75% power.
Pre-lean the mixture
2
to 50°F estimated
rich of peak on any
EGT: _________°F.
Wait one minute
3
Tap the LF button
4
Lean the mixture at
5
approx. 10°/second
without pausing.
(cylinder I.D. box
flashes when a EGT
rises 15°F)
6 Stop leaning when
a column begins
flashing. You will see
LEANEST
for one
second, followed by:
If you hold LF, peak
7
EGT will be displayed
while the LF button is
held down.
If you tap LF, the
8
difference from peak
EGT is shown. Tap
again to return to the
peaked EGT value.
Slowly enrich mixture
9
noting that EGT is
returns to peak then
drops. Stop enriching
at the desired EGT.
'Peak': best Econ.
'ROP' target: best
power.
For Your Safe Flight
Scanner Example
1490 370
*
EGT CHT
See 'Pre-leaning'
Let engine stabilize.
Start LeanFind (if LOP
ROP
appears hold STEP & LF until
ROP appears)
Flashing cylinder I.D. box
1520
LF
EGT
identifies the hottest EGT and
(Without FF)
- or -
that an EGT has increased at
1520 13.8
least 15°F which arms the
EGT FF
(With FF)
EDM to now look for first EGT
to peak.
1545 SET Flashing cylinder I.D. box
EGT
AND its column indicates
(Without FF)
- or -
leanest cylinder. (SET means
1545 12.4
Set the mixture.) Due to
EGT FF
(With FF)
thermal inertia this will usually
be about -15°F down the lean
side of peak.
Captured peak EGT value
1560 PK
EGT
(plus peak FF, if FF equipped)
(Without FF)
- or -
is displayed.
1560 12.9
EGT FF
(With FF)
A useful mode for enrichening
-90 SET
EGT
the mixture to desired degrees
(Without FF)
- or -
below peak. Just set to
-90 13.4
desired value - no math
EGT FF
(With FF)
required! NOTE: Unit
remembers view last used.
1560 SET
EGT
(PEAK)
1460 SET
EGT
(100º RICH OF PEAK)
Comments
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