Auxiliary Alarm - Raymarine Autohelm ST7000 Installation Instructions Manual

The rudder reference arm movement is limited to
± 60 deg. Care must be taken during installation
to ensure the rudder reference arm is opposite the
cable entry when the rudder is amidships. Failure
to do this could result in damage if the rudder
reference arm is driven onto its end stops by the
steering system (Fig. 10).
Control Dimensions
It is important to ensure that the dimensions set
out in Fig. 11 are within the limits set and the tiller
arm and rudder reference arm are parallel to each
other.
With the rudder amidships, the rudder reference
arm should be opposite the cable entry and at 90
deg. to the connecting bar. Minor adjustment can
be made by slackening off the 3 securing screws
and rotating the transducer body.
The tiller pin must be positioned within the limits
shown in Fig. 11. Ideally dimension A should be
140mm (5.5in). However, changing this within the
limits shown will not degrade the autopilot
performance but will slightly alter the scaling of the
rudder angle display on the control unit. The tiller
pin is secured to the tiller arm using the self
tapping screws provided,
Cut the studding X (Fig. 11) to length and screw
on the lock nuts Y (Fig. 11) and ball pin sockets.
The sockets can then be pressed onto the pins.
Move the rudder from side to side to ensure the
linkage is free from any obstruction at all rudder
angles.

2.1.5 Auxiliary Alarm

The auxiliary alarm unit is waterproof and may
therefore be mounted in any position. The alarm
unit is supplied with a terminal block to connect a
two core interconnection cable to the course
computer. A 22mm (7m/8in) hole should be bored
through the mounting panel/deck to pass through
the two way connector block and interconnecting
cable (Fig. 12).
Finally, the alarm unit should be screwed into
position using the four self tapping screws
provided. A foam seal on the alarm mounting
flange will ensure a watertight joint to the
mounting surface.
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