Airmar B744V - Manual

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Applications
• Bronze housing recommended for fiberglass or wood hulls only
Never install a bronze housing in a metal hull, because
electrolytic corrosion will occur.
• Never install a metal housing in a vessel with a positive ground
system.
Pre-test
After connecting the multisensor to the instrument, spin the
paddlewheel. Check for a speed reading and the approximate air
temperature.
Tools and Materials Needed
Fairing (optional)
Safety goggles
Dust mask
Water-based antifouling paint (mandatory in salt water)
Electric drill
Drill bit: 3mm or 1/8"
Hole saw:
Fiberglass or wood hull: 51mm or 2"
Sandpaper
Mild household detergent or weak solvent (alcohol)
Digital level (installation with fairing)
Band saw (installation with a fairing)
Rasp or power tool (installation with a fairing)
Marine sealant (suitable for below waterline)
Slip-joint pliers
Silicone grease or petroleum jelly (Vaseline
® )
Zip-ties
Installation in a cored fiberglass hull:
Hole saw for hull interior: 60mm or 2-3/8"
Cylinder, wax, tape, and casting epoxy (see page 5, #5)
Identify Your Model
The model name is written on the top right corner of the paper tag
affixed to the cable.
Mounting Location
Acoustic Noise
Acoustic noise is always present and these sound waves can
interfere with the operation of the transducer. Background noise
from sources such as: waves, fish, rain, and other vessels cannot
be controlled. However, carefully selecting the multisensor’s
mounting location can minimize the effect of vessel generated
noise from the propeller(s) and shaft(s), other machinery, and
other echosounders. The lower the noise level, the higher the
echosounder gain that can be used.
Placement
Choose a location where:
• The water flowing across the hull is smoothest with a minimum
of turbulence and bubbles (especially at high speeds).
• The multisensor will be continuously immersed in water.
• The transducer beam is unobstructed by the keel or propeller
shaft(s).
• There is a minimum deadrise angle.
• There is adequate headroom inside the vessel for the height of
the housing, tightening the nuts, and removing the valve
assembly and insert.
Caution: Do not mount the multisensor in an area of turbulence or
bubbles such as:
Near water intake or discharge openings
Behind strakes, fittings, or hull irregularities
Behind eroding paint (an indication of turbulence)
B66V
B66V
Fairing
INSTRUCTIONS INSTALLATION
WARNING: NEVER USE SOLVENTS!
Cleaners, gasoline, paint, sealants and other products
may contain strong solvents, such as acetone, which
attack many plastics greatly reducing their strength.
IMPORTANT: Please read the instructions completely
before proceeding with the installation. These directions
supersede instructions in your instrument manual if they
differ.
TRIDUCER ® Multisensor with Valve & Pin Models: B744V, B744VL, B66V, B66VL