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Simrad SP90
7.4
Hull unit
Upper limit
switch S304
Transducer
shaft
Lower limit
switch S305
Figure 19 The main parts of the SP90 Hull Unit
150
General
The sonar hull unit must be under continuous watch as a part of the
vessel's machinery.
In addition to lubrication, check for signs of corrosion. If required,
clean the corroded areas and paint over with a high quality
protective paint.
Hand
crank
Hoist
motor
Brake
release screw
Motor
Control Unit
Gantry
Mounting
flange
Installation
trunk
Transducer
As it may be exposed to severe
strain because of pitching and
vibrations,
it
must
inspected regulary for loose
parts.
850--164511 / B
be
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