Kongsberg Simrad MF90, Installation Manual

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476671/B
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6 Lower the hull unit carefully onto the installation trunk.
Important
The transducer is covered with a thick red or black protective coating made of a special
plastic type. The protective coating is a vital part of the transducer. It is very important
that neither this coating nor the internal parts of the transducer are damaged during the
handling, installation or cleaning.
7 Align the mounting holes carefully.
8 Mount and tighten the relevant nuts and bolts.
First, tighten all the nuts to finger tight. Then work alternately on opposite sides of the
construction.
Use the following final maximum torque: 60 Nm
Related topics
Installing the hull unit, page 99
Designing and mounting mechanical support
brackets to secure the hull unit
Due to its height and weight, the hull unit gantry must be secured to the bulkhead by means
of mechanical support brackets. The dimensions and strength of the support brackets must
be adequate to prevent vortex induced vibrations. This is an invariable requirement to ensure
the safety of the MF90 system and the vessel.
Prerequisites
The shipyard must provide all necessary tools and manpower.
Installing the hull unit