Anti-Fouling - Raymarine REALVISION 3D Installation Instructions Manual

22.If necessary, apply additional marine-grade sealant to the anti-rotation bolt, above the small
internal isolator sleeve.
23. Place the small washer over the anti-rotation bolt.
24. If necessary, apply additional marine-grade sealant to the anti-rotation bolt above the small
washer.
25.Screw the anti-rotation nut onto the bolt and fully tighten, using a suitable sized wrench (spanner).
26.Apply a thick bead of marine grade sealant in the gap between the transducer and High speed
nose cone on the bottom and both sides, as shown below.
27. Remove any excess sealant on the outside of the hull and transducer, ensuring a smooth
transition between High speed nose cone and transducer and transducer and hull.
28. Ensure that the marine-grade sealant has fully cured
Refer to the sealant manufacturer's instructions for curing times.
29. Unless local environmental regulations prohibit, apply a water based anti-fouling paint to the
bottom face of the transducer, ensuring all of the externally exposed transducer surfaces are
coated and the paint overlaps onto the hull.
30. Check for leaks around the transducer immediately upon putting the vessel back in the water.
Important:
Do NOT leave your vessel in the water unchecked after installing your transducer. Very small
leaks may not be immediately obvious, and considerable bilge water could accumulate over the
course of a day, or overnight.
31. Check for leaks at regular intervals after installation until you are satisfied that there are no leaks.
32. Ensure checking for leaks around the transducer is added to your routine vessel maintenance
schedule.

Anti-fouling

Where local regulations allow, it is recommended that you coat your transducer using a water-based
anti-fouling paint. This will help prevent the build-up of organic growth, which can reduce transducer
performance.
Important:
• Before applying water-based anti-fouling paint, check that local environmental rules and
regulations do not prohibit the use of anti-fouling paint.
• Never use copper-based anti-fouling paint as this can impact transducer performance.
• Never use ketone-based anti-fouling paint as this can attack the transducer's plastic, damaging
the transducer.
• Paint your transducer using a brush, do not use a spray can or a sponge roller as these methods
can cause tiny air bubbles to be incorporated in the paint, which will also reduce transducer
performance.
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