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Airmar B45 Owner's Manual & Installation Instructions

Download Owner's manual & installation instructions of Airmar B258 Transducer for Free or View it Online on All-Guides.com. This version of Airmar B258 Manual compatible with such list of devices, as: B260, B45, B46, SS258, SS261

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17-008-05 rev. 11 01/07

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.

Thru

-

Hull, Metal Stem

Depth Transducer

Models: B45, B46, B258, B260,

SS258, SS260, SS261, SS270W, SS505, SS560

Applications

•

Bronze

transducer recommended for fiberglass or wood hulls.

Never mount a bronze transducer in a metal hull, because

electrolytic corrosion will occur.

•

Stainless steel

transducer compatible with all hull materials.

Recommended for aluminum hulls to prevent electrolytic corrosion

provided the stainless steel transducer is isolated from the metal hull.

Caution

: Installation requires using a fairing kit to isolate the

stainless steel transducer from a metal hull.

•

Never install a metal transducer on a vessel with a positive

ground system

.

Tools & Materials

Safety goggles

Dust mask

Electric drill

Drill bits:

Pilot hole 3mm

or

1/8"

B45, B46, SS505 22mm

or

7/8"

B260, SS260, SS261,

SS270W, SS560 33mm

or

1-5/16"

B258, SS258 30mm

or

1-3/16"

Sandpaper

Mild household detergent

or

weak solvent (such as alcohol)

File (installation in a metal hull)

Fairing

(MANDATORY FOR SS261 AND SS560)

Angle finder

or

digital level (installation with a fairing)

Band saw

or

hand saw (installation with a fairing)

Rasp

or

power tool (installation with a fairing)

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)

Drill bit for hull interior:

B45, B46, SS505 35mm

or

1-3/8"

B260, SS260, SS261,

SS270W, SS560 42mm

or

1-5/8"

B258, SS258 40mm, 41mm,

or

1-5/8"

Cylinder, wax, tape, and casting epoxy

Identify Your Model

The model name is printed on the cable tag.

About Fairings

Nearly all vessels have some deadrise angle at the mounting

location. If the transducer is mounted directly to the hull, the

sound beam will be tilted to the side at the same angle as the

deadrise. A fairing is strongly recommended if the deadrise angle

exceeds 10

°

.

•Orients the sound beam straight down by mounting the

transducer parallel to the water surface.

• Mounts the transducer deeper in the water for clean flow over

the transducer’s face.

Made of a high-impact polymer with an integrated cutting guide,

an Airmar fairing is safer and easier to cut with a band saw and

shape with hand tools than custom fairings. It can be shaped to

accommodate a deadrise angle of up to about 25

°

. (For fairing

part numbers, see “Replacement Parts” on page 4.)

A backing block is mounted inside the hull to provide a level

surface for the hull nut to seat against (see Figure 2). It is

fabricated matching the interior deadrise angle of the boat. After

cutting an Airmar fairing, use the remaining section with the

cutting guide for the backing block.

High-Performance Fairing

has a long streamlined shape for

excellent performance above 15kn (18MPH). (To order see

“Replacement Parts” on page 4.)

Mounting Location

• The water flowing across the hull

must

be smooth with a

minimum of bubbles and turbulence (especially at high speeds).

Caution

: DO NOT MOUNT near water intake or discharge

openings or behind strakes, fittings, or hull irregularities.

• The transducer

must

be continuously immersed in water.

• The transducer beam

must

be unobstructed by the keel or

propeller shaft(s).

• Choose a location away from interference caused by power and

radiation sources such as: the propeller(s) and shaft(s), other

Record the information found on the cable tag for future reference.

PN:___________________Date___________Frequency________kHz

IMPORTANT

: Please read the instructions completely

before proceeding with the installation. These

instructions supersede any other instructions in your

instrument manual if they differ.

INSTALLATION INSTRUCTIONSOWNER’S GUIDE &

B45

Standard

High-Performance

Fairing

Fairing