-34-
PRO
PILOT
725 INSTALLATION & SERVICING MANUAL
Sea
Trials
SEA TRIALS
With
the
installation
completed,
it
is
strongly
advised
that
the
following
Sea
Trials
are
carried
out.
Checks at
Ensure
that
the
steering
moves
freely
from
lock
to
lock
the Dockside
without
undue
stiffness
and
that
it
can
move
to
its
full
travel
without
the
Rudder
Feedback
arms
fouling
the
steering.
Return
the
rudder(s)
back
to
the
amidships
position.
Switch
the
autopilot
ON,
if
the
steering
operates,
switch
off
at
once and re-check the connections. Continue when the fault
has been corrected.
Check that no system faults appear after the self test routine has
been completed.
Check that the autopilot has been configured for the vessel, e.g.
displacement, semi-displacement or planing.
Check that the Rudder Position display indicates the rudder
moving to the left when the helm is turned to Port and to the
right when it is turned to Starboard. If not, reverse the Rudder
Feedback Unit phasing (see the Installation Settings earlier).
Check that the rudder position indicator displays “|
|” when the
rudder is in the position normally required to steer the vessel in
a straight line. Also check that the display flashes, indicating
that it has reached the Rudder Limit,
before it reaches the end
of rudder movement (in both directions).
Switch the autopilot from Standby mode into Autopilot mode.
Very little or no rudder movement should occur. If the rudder
drives continuously to one side,
switch off at once and
reverse the motor phasing. If the rudder continuously ‘hunts’
about amidships, increase the rudder Response setting.
Check that when you rotate the Course Control Knob clockwise,
the motor drives the rudder to Starboard and when you rotate
the Course Control Knob anticlockwise, the rudder drives to
Port. If the Rudder moves in the wrong direction, reverse the
motor and the rudder phasing (see the Installation Settings
earlier).
