Airmar TRIDUCER Series Owner's Manual

OWNER' S GUIDE
TRIDUCER ® Multisensor with Valve
Models: B744V, B744VL
U.S. Patents: 4,898,029; 5,186,050, Re 33,982. Australian Patent 605,281
Canadian Patent 1,313,775. Japanese Patent 1851014.
IMPORTANT : THE
INSTALLED CAREFULLY!
instructions completely before proceeding with the
Installation. These instructions supersede any other
instructions in your instrument manual if they differ.
WARNING: The multisensor must be
installed with a fairing!
A fairing that is carefully cut to fit the shape of the hull provides a
sealing surface around the drilled hole. If the multisensor is not
installed with a fairing, there may be insufficient surface area to
seal the hull. Water may leak into the boat causing damage or
possibly sinking.
WARNING: Installation with a High-Performance
Fairing requires an anti-rotation bolt!
For installation using a High-Performance Fairing, follow the
supplemental instructions that comes with the fairing. A High-
Performance Fairing requires an anti-rotation bolt. Failure to
install the anti-rotation bolt may result in the fairing rotating while
the boat is underway. The effect may be violent movement and
loss of steering. This could result in serious injury or death to
passengers and/or damage to the boat or other property.
CAUTION: NEVER USE SOLVENTS!
Cleaners, fuel, paint, sealants, and other products may
contain strong solvents, such as acetone, which attack
many plastics greatly reducing their strength.

Applications

• Bronze housing recommended for fiberglass or wood hulls.
• 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.
MULTISENSOR MUST
Please read
& INSTALLATION INSTRUCTIONS
Record the information found on the cable tag for future reference.
Part No._________________Date___________Frequency________kHz
B744V
BE
the

Pretest

Connect the multisensor to the instrument and spin the
paddlewheel. Check for a speed reading and the approximate air
temperature. If there is no reading or it is inaccurate, check the
connections and repeat the test. If there is still no reading or they
are inaccurate, return the product to the place of purchase.
Tools & Materials
Fairing ( MANDATORY ) (High-Performance fairing recommended)
Safety goggles
Dust mask
Electric drill
Drill bit: 3mm or 1/8"
Hole saw: 51mm or 2"
Sandpaper
Mild household detergent or weak solvent (such as alcohol)
Angle finder or digital level
Band saw or hand saw
Rasp or power tool
Marine sealant (suitable for below waterline)
Slip-joint pliers
Zip-ties
Water-based antifouling paint ( MANDATORY IN SALT WATER )
Installation in a cored fiberglass hull (see page 4):
Hole saw for hull interior: 60mm or 2-3/8"
Cylinder, wax, tape, and casting epoxy

About High-Performance Fairings

Airmar recommends installing a High-Performance Fairing unless
insufficient space demands a Standard Fairing. Airmar's High-
Performance Fairings have a long streamlined shape that directs
water around the multisensor to minimize drag. They give excellent
results at all speeds and especially above 15 knots (see
Replacement Multisensor & Parts on page 6).
High-Performance
Fairing
Standard
Fairing