Kongsberg EM 2040C, Maintenance Manual

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378511/A
Painting the sonar head face
In order to reduce the marine growth (biological fouling) on the sonar head face, it
may be covered with a thin film of suitable anti-fouling paint. The sonar head must be
painted immediately after installation, and then again as often as required to maintain
the protection.
Prerequisites
The following tools and consumables are required.
• Personal protection
• Fresh water
• A mild synthetic detergent and a plastic brush
• Fine-grade sandpaper (240 inch grit size)
• Primer
• Anti-fouling paint
• Wet film gauge
Because some paint types may be aggressive to the polyurethane in the sonar head,
consult our list of approved paints.
Context
The sonar head has not been designed with any protection against biological fouling.
Anti-fouling paint may therefore be applied to the sonar head face.
To minimize the negative acoustical effects the layer of anti-fouling paint must be as
thin as possible.
Note
The anti-fouling paint will reduce the acoustical performance of the sonar head. The
surface roughness of the sonar head substrate and the thickness of the paint may also
influence the performance. Kongsberg Maritime can not be held responsible for any
negative consequences of the anti-fouling paint.
Observe the relevant instructions and safety information provided by the paint
manufacturer.
Procedure
1 Clean the sonar head thoroughly. Make sure that you remove all oil grease residues,
as well as salt and other contamination.
2 Allow the sonar head surface to dry.
EM 2040C