44
476671/B
Note
You may need to install the MF90 hull unit aft of an existing hull unit. If these hull
units are placed one after the other along the keel, you must make sure that you have
sufficient distance between them. When mounted in the longitudinal direction of the
hull, the distance between two installation trunks must be minimum three -3- times the
diameter of the forward trunk. This is important to increase performance and to reduce
noise and excessive vibrations that can damage the hull unit.
2
Prepare the sonar room to meet the installation requirements.
3
Optionally
: Install the gate valve.
On some vessels, additional transducer protection is required. One example is vessels
working in arctic conditions. It is important for them to prevent ice from damaging
the transducer. A gate valve is then added to the hull unit installation. By means of
a mechanical construction it shuts off the bottom of the installation trunk when the
MF90 system is not used.
For more information, refer to the end-user documentation provided by the
manufacturer.
Note
The mounting flange will penetrate the hull. For this reason, correct installation of the
mounting flange and the gate valve is crucial for the vessel safety.
4
Mount the installation trunk.
The installation trunk is not used when a gate valve is mounted.
Note
The installation trunk will penetrate the hull. For this reason, mounting the installation
trunk correctly is a crucial part of the installation.
5
Mount the hull unit on top of the installation trunk or the transducer dock.
6
Install the MF90 system units.
Note that some MF90 system units may be commercial. Unless ordered specifically
these are not included in the delivery, and must be purchased locally.
7
Install the cables between the MF90 system units.
This is described in the
Cable layout and interconnections
chapter. Observe the
relevant cable plan, procedures, as well as the general requirements for cabling.
Simrad MF90 Installation Manual
Summary of Contents for Simrad MF90
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