Airmar B744V User Manual download pdf

17-033-02 rev. 07 12/14/10

Applications

• These instructions are for a replacement speed/temperature

insert only. Installing a new insert will NOT solve problems with

depth sounding or fish finding.

• Determine which instructions to follow, either A or B, by looking

at your multisensor. If your multisensor has one cable, follow

instructions A on page 2. If your multisensor has two cables—

one from the depth transducer and one from the speed/

temperature insert—follow instructions B on page 3.

• If these instructions are followed carefully:

• The connections will not corrode

• The strain relief grommets will be water resistant and provide

excellent cable retention.

Before Installing

1. Be sure your new speed/temperature insert is the correct

replacement. Compare the length of the new insert with the

original insert (ignore the cable). If the new insert is more than

3mm (1/8") longer or shorter than the original insert, return it. To

obtain the correct insert, see “ Replacement Parts” on the back

of your multisensor’s owner’s guide.

2. Check the multisensor’s connector at the echosounder for

corrosion. If the connector’s pins are corroded, clean them.

Then test the multisensor to see if the problem has been

corrected.

3. Check the speed and temperature functions of the new insert.

Connect it to the echosounder and spin the paddlewheel.

Check for a reading of several knots. Check for the approximate

air temperature. If there is no reading(s), check the connection

and repeat the test. If there is still no reading(s) or it is

inaccurate, return the product to your place of purchase.

Tools & Materials

Safety goggles

Dust mask

Pencil

Drill

Drill bit: 3mm or 1/8"

Screwdrivers: Phillips and blade

Box-cutter knife (zip-cable installation)

Cutting pliers

Masking tape

Marker

Wire strippers

Alcohol

Crimping pliers (nine or ten-wire cables)

Anti-fouling paint (water-based) (mandatory in salt water)

Silicone lubricant or petroleum jelly

Mounting Location

1. Remove the red cap from the junction box and set the contents

aside (see Figure 1).

2. Select a convenient dry mounting location along the

multisensor’s cable route, preferably 1–1.5 m (3–5') from the

multisensor but no more than 3m (10').

3. Position the junction box so the grommets are easily accessible

to the cable. Mark the location of the mounting holes.

4. At the marked location, drill two 3mm or 1/8" holes

approximately 10mm (3/8") deep. Do not fasten the junction

box in place at this time.

INSTALLATION INSTRUCTIONS

connector

black sleeving

large diameter

sleeving

small diameter

sleeving

terminal block

tab (2)

grommet (4)

Figure 1. Junction box and contents

terminal

terminal screw

mounting screws

mounting

block

screws

(16)

screw (2)

cap

WARNING: Always wear safety goggles and a dust

mask when installing to avoid personal injury.

CAUTION: High Voltage Charge

The depth transducer may be storing a high voltage

charge. Accidental discharge could destroy the speed

sensor.

IMPORTANT: Read the instructions completely

before proceeding with the installation. These

instructions supersede any other instructions in your

instrument manual if they differ.

Junction Box Kit

for Replacement Speed/Temperature Insert

Models: B44V, B66VL, B744V, B744VC, B744VL, B744VLC

1 2 3 4

Summary of Contents

Page 1 - INSTALLATION INSTRUCTIONS

17-033-02 rev. 07 12/14/10Applications• These instructions are for a replacement speed/temperature insert only. Installing a new insert will NOT solve

Page 2 - Preparing the Cables

Preparing the CablesA. One Cable (Zip-cable) MultisensorCAUTION: Do not cut the depth-transducer half of the zip-cable.CAUTION: Do not puncture unused

Page 3 - Connecting & Testing

Figure 9. Splicing both halves of a zip-cableechosounderspeed/temp half of zip-cable(printed half)(contains red, green, brown,white, and bare wires)de

Page 4 - Anti-fouling Paint

4Closing & Mounting1. Apply alcohol to each cable jacket inside the junction box to ease sliding. Grasp each cable from outside the box and pull u