• | Personal protection |
• | Fresh water |
• | Plastic brush |
• | Mild synthetic detergent |
• | Fine‑grade sandpaper (240 inch grit size) |
• | Primer |
• | Anti‑fouling paint |
• | Wet film gauge |
• | Airless spray |
• | Ratchet (Socket: 13 mm) |
• | Low‑strength threadlocker (Loctite 222 (or similar)) |
• | One person must stay in the sonar room to operate the hull unit. |
• | One person must stay in the dry dock, under the hull, to make sure that the transducer is not lowered too far down. |
1 | Make sure that all power to the hull unit is disconnected. |
2 | Make sure that you have sufficient height between the hull and the dry dock floor. |
3 | Lower the transducer to its bottom position. How to manually lower and hoist the transducer depends on:
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4 | Clean the transducer thoroughly. Make sure that you remove all oil grease residues, as well as salt and other contamination.
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5 | Allow the transducer surface to dry. |
6 | Abrade the transducer surface using a sanding paper with 240 inch grit size. Do not exceed a surface roughness (Rmax) of 35 microns as this can influence the transducer performance.
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7 | Remove all dust. |
8 | Apply the primer, and let it dry. |
9 | Apply the paint. Observe the instructions provided by the paint manufacturer. Use airless spray. Apply the minimum specified film thickness
per coat and for the complete layer. It is not possible to measure dry film thickness on transducer surface. You must therefore
use a wet film gauge to frequently measure the paint thickness.
Note
We strongly recommend that you do not use a paintbrush and/or a roller.
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10 | Allow the paint to dry. |
11 | Hoist the transducer to its upper position. |