B&G Network Autopilot - Manual (Page 32)

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KEY POINTS ON INSTALLATION.
• Make sure that the rudder angle is limited by the rudder stops
and not the limit of travel of the ram arm. Failure to do this will
damage the unit and invalidate the warranty.
• Make sure that there is sufficient space at each end for the ram arm
to extend fully, the ram stroke length is shown in the table below.
• Check for full movement and security of the steering gear before
applying any power to the autopilot system, refer to the installation
check list in the commissioning section of this handbook.
MOUNTING A BLUE RAM ON A VERTICAL BULKHEAD
Due to the restricted movement of the ram of +14
°,
10
°
for the size 1
and 2 and +/- 5
°
for the size 3, it is important that the maximum rudder
angle is carefully measured and the positioning of the RAM, tiller arm
length and offset are carefully followed from the diagrams on the next
page.
FAILURE TO COMPLY WITH THESE DIMENSIONS MAY CAUSE
PREMATURE FAILURE OF THE RAM, AND PLACE GREAT
STRESS ON THE STRUCTURE OF THE VESSEL.
The Size 1 and 2 Blue Ram may be mounted in any orientation, without
the need to fit an external reservoir. The Size 3 Ram requires an
external reservoir which must be mounted above the unit. Care must be
taken to ensure that the connecting pipes are not in anyway kinked or
turned through any tight bends.