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Maintaining a
transducer
Using anti-fouling paint
Cleaning a transducer
490 INSTALLATION MANUAL, Revision B2
Do not expose the transducer's face or plastic housing to
gasoline or strong solvents, such as acetone. These solvents can
penetrate and degrade many plastics and reduce their strength.
The transducer should be coated with water-based anti-fouling
paint to prevent aquatic growth.
housing
Paint exposed housing
and bore up 30mm (1-1/4")
detail
Paint outside wall below the lower O-ring
including exposed end, paddle wheel cavity and paddle wheel
Anti-fouling paint (B44V shown)
Figure 4: Anti-fouling paint areas (for Airmar B44V)
CAUTION!
Use special transducer paint. Other paints may
contain copper, which is conductive and can burn
out the transducer within minutes!
To clean the transducer of heavy debris or foul sea growth, use
a stiff brush or putty knife, but don't scratch the surfaces.
Check the transducer every few weeks, maximum.
Use sanding sparingly, as repeated sanding may affect the
transducer's performance at high speeds. For lighter cleaning,
the surface may be wet-sanded with #220 or finer wet/dry
sandpaper.
SECTION TWO Installing the transducer
paddle wheel
insert
lower
O-ring
Page 11
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