Kongsberg Simrad MF90, Installation Manual

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476671/B
this surface is clean and undamaged. It must be watertight after the hull unit has been
installed.
• The Motor Control Unit must never be physically dismounted from the hull unit gantry.
Procedure
1 Lift the hull unit ( with the transducer protection still in place! ) and place it vertically
over the installation trunk.
Make sure that you do not damage the delicate parts of the hull unit.
Note
Make sure that you do not damage the transducer or any of the cables. Watch the hull
unit carefully during the lift to prevent the delicate parts from being damaged, stuck or
hooked on to protruding objects. Do not remove the transducer protection (the thick
foam) until just before the hull unit is lowered onto the installation trunk.
2 Remove the blind flange from the top of the installation trunk.
A blind flange is mounted on the installation trunk for protection if the trunk is provided
with the MF90 system delivery.
Store the blind flange in the sonar room for possible future use.
3 Check the top of the installation trunk.
a Make sure that the rubber gasket on the top of the installation trunk is not damaged.
b Make sure that the surface of the installation trunk is clean and free from grit
or other damaging particles.
c Make sure that the top of the installation trunk has not been damaged, and that it is
smooth and even without physical scratches or dents.
4 O-ring:
a Clean the O-ring groove and inspect the O-ring.
b Apply a thin film of silicon grease on the O-ring.
c Install the O-ring.
5 Remove the transducer protection.
Simrad MF90 Installation Manual