Hartzell HC-D2MV20-3 Series, Owner'S Manual And Logbook

Page: 63 / 204

Propeller Owner's Manual
140
DESCRIPTION AND OPERATION
61-00-40
Page 2-23
Nov/02
CAUTION: REDUCE RPM FIRST WHEN MOVING
BLADE ANGLE FROM REVERSE PITCH
TO LOW PITCH TO AVOID OVERSPEED
WHEN MOVING THROUGH ZERO
(MINIMUM AERODYNAMIC LOAD)
BLADE ANGLE.
(c) Before coming out of reverse pitch reduce RPM with
throttle to approximately 1200 RPM.
NOTE: The higher the RPM, the faster the pitch
moves from reverse to low pitch.
(d) Apply forward pressure to push the reversing control
into the dash until it slips into the lock position. Any
slight and momentary RPM increase, up to but
less than maximum engine RPM, is not a cause for
concern as some speed increase will occur when the
blade pitch moves through a zero (no load) blade
angle.
B. Governing (Constant Speed Operation)
(1) Push the governor RPM control forward to increase RPM
and pull it back to decrease RPM. The governor will follow
the command precisely and RPM will change immediately.
(2) If flight speed or throttle is changed the RPM will remain
constant.
(3) Warm-up
Perform engine start and warm-up per the Pilot's
Operating Handbook (POH). During this process the
governor RPM control should be forward, or maximum
RPM position.
NOTE: When throttle is reduced engine power will not
be sufficient to rotate the propeller at maximum
RPM.
(4) Take-Off
Set the governor RPM control to maximum RPM. RPM will
remain constant during the takeoff roll and rotation.
(5) Climb
Adjust the governor RPM control per the Pilot's Operating
Handbook (POH).