1. Route the cable to the echosounder being careful not to tear the
cable jacket when passing it through the bulkhead(s) and other
parts of the boat. Use grommet(s) to prevent chafing. To reduce
electrical interference, separate the transducer cable from other
electrical wiring and the engine(s). Coil any excess cable and
secure it in place with cable ties to prevent damage.
2. Refer to your echosounder owner’s manual to connect the
transducer to the instrument.
Checking for Leaks
When the boat is placed in the water,
immediately
check around
the transducer for leaks. Note that very small leaks may not be
readily observed. Do not leave the boat in the water for more than
3 hours before checking it again. If a leak is observed, repeat the
installation procedures
immediately
.
Maintenance, Parts & Replacement
Anti-fouling Paint
Surfaces exposed to salt water must be coated with anti-fouling
paint. Use
water-based
anti-fouling paint only. Never use ketone
based anti-fouling paint, since ketones can attack many plastics
possibly damaging the transducer. Reapply anti-fouling paint
every 6 months or at the beginning of each boating season.
Cleaning
Aquatic growth can accumulate rapidly on the transducer’s face,
reducing its performance within weeks. Clean the surface with a
Scotch-Brite
®
scour pad and mild household detergent,
being
careful
to avoid making scratches. If fouling is severe, lightly wet
sand it with fine grade wet/dry paper.
Transducer Replacement & Parts
The information needed to order a replacement Airmar transducer is
printed on the cable tag. Do not remove this tag. When ordering,
specify the part number, date, and frequency in kHz. For convenient
reference, record this information near the top of page one.
Obtain parts from your instrument manufacturer or marine dealer.
Gemeco
USA
Tel: 803-693-0777
email: [email protected]
Airmar EMEA
Europe, Middle East, Africa
Tel: +33.(0)2.23.52.06.48
email: [email protected]
2. Apply marine sealant to the following surfaces to seal the hull
and hold the transducer firmly in place (Figure 3).
• Top of the transducer (cable side)—Apply the amount of
marine sealant determined by dry fitting the transducer in the
cavity,
plus an additional 3mm (1/8").
• Apply 6mm (1/4") of marine sealant to the transducer
surfaces that will contact the cavity.
• Apply 6mm (1/4") of marine sealant to the cable fittings,
being sure the marine sealant extends 6mm (1/4") outside of
the cavity and into the hull.
• Apply 3mm (1/8") of marine sealant to the threads of the bolts.
• Apply 3mm (1/8") of marine sealant to the surface of the
washers that will contact the cavity.
3. From outside the hull, thread the transducer cables through the
holes in the mounting cavity. Push the transducer into the
mounting cavity and seat it firmly within the recess.
The
transducer’s face must be flush with the outside of the hull for
good performance
. If necessary, apply additional marine sealant
to the top of the transducer.
4. From inside the hull, screw a nut onto each bolt. Place one
washer against each nut so that the side with the sealant will be
against the cavity when installed. Screw each bolt into a
threaded hole in the transducer.Tighten the bolts using a torque
wrench with a force not exceeding 6N-m (5ft.-lb.)
5. Lightly tighten the nuts against the cavity using a torque wrench
with a force not exceeding 3.5N-m (3ft.-lb.).
6. When the boat is underway, especially at high speeds, water
will enter any gaps between the transducer and the hull and
push against the transducer with considerable force. From
outside the hull, fill any gaps between the transducer and the
cavity with marine sealant.
7. Remove any excess marine sealant on the outside of the hull to
ensure smooth water flow under the transducer.
Cable Routing & Connecting
CAUTION:
If the transducer came with a connector, do not
remove it to ease cable routing. If the cable must be cut and
spliced, use Airmar’s splash-proof Junction Box No. 33-035 and
follow the instructions provided. Removing the water-proof
connector or cutting the cable, except when using water-tight
junction box, will void the transducer warranty.
Copyright © 2011 - 2019 Airmar Technology Corp. All rights reserved.
35 Meadowbrook Drive, Milford, New Hampshire 03055-4613, USA
•
www.airmar.com
Figure 3. Bedding and installing
Copyright © 2012 - 2019 Airmar Technology Corp.
transducer
cable fitting
bolt (2)
nut &
washer (2)
marine
sealant
marine sealant
hull
cavity
face
3