Manual

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KEY POINTS WHEN INSTALLING THE RRU
•
General consideration must be given to the steering system and its
geometry before starting the RRU installation. Many factors must be
contemplated for a practical solution, the information given here is for
guidance only, although where a maximum or a minimum value is
given these must be adhered to.
•
Mount the RRU on a flat surface next to the tiller arm or steering
quadrant, construct a small platform if necessary.
•
Do not lengthen the drag-link arm as this can transmit excessive
vibration loads to RRU and will invalidate the warranty.
•
The unit operating arm can be rotated through 360
º
, the mid-point of
the RRU travel is when the operating arm is opposite the cable entry
point.
•
When the rudder is moved from hard-over port to hard-over starboard
the RRU arm should swing through a minimum of 90
º
, this will ensure
that there is sufficient voltage output to the autopilot. Measure the
voltage difference between the green and blue wires of the RRU,
there should be a minimum of 1 volt change from hard over to hard
over. N.B. If there is less than 1 Volt change the Pilot will not
commission.
•
After installation check full movement of the steering system ensuring
that there is no fouling between the steering gear, RRU parts and
ram drive unit if fitted.
•
Ensure that there is no backlash in the linkage between the RRU and
the steering gear, otherwise incorrect operation of the autopilot will
occur.