VM1000C Pilot’s Guide Page
9
Tap to select a different EGT by choosing E1, E2, E3 etc. (Note:
not available when in the peak mode). Temperature is displayed in
either Fahrenheit or Celsius units (as set in the MISCELLANEOUS
menu).
WARNING
Refer to your engine operating manual for the proper
techniques, temperature and precautions for leaning.
Improper leaning may damage your engine!
Peaking Mode Operation
STEP 1: Stabilize
The aircraft engine temps, throttle and rpm. Set the mixture at rich
of peak by verifying all EGT values decrease a few bars when fuel
flow is increased, then allow the engine to stabilize for 5 to 10
seconds.
STEP 2: Find Peak
a. Tap . Observe that a row of bars appear across the top of
the EGT graphics area signifying peak mode is active.
b. Lean the mixture smoothly so EGT is changing about 3 to 5°F
per second. If significant engine roughness occurs, then a
true peak cannot be found and leaning should be aborted and
mixture returned to a rich value.
c. When peak is found several things happen on the display:
1. The EGT graph flashes for a short period of time and its
top bar comes on identifying the peaked EGT column.
2. Both the EGT and DIF icon are activated.
3. The digital readout now shows DIFferential temperature
(the peak EGT minus current EGT). A positive number
means rich of peak and a negative number means you
are lean of peak.
4. Periodically the actual EGT temperature of the peaked
cylinder is displayed (DIF goes off) allowing you to
monitor it as well.
To Next Page
Loading...
Need help?
General
