6. Route the transducer cable to the sonar unit. If the cable is too long, do
not cut it! Coil and store the excess cable.
7.
Check for leaks!
After the boat is placed in the water, check for leaks
immediately. Check the boat for leaks again several times during the
next 24 hours. If you notice any leakage at all, the transducer should be
re-installed with a new coat of adhesive.
Maintenance
Sea growth can accumulate rapidly on the transducer's surface. This
growth will reduce the transducer's performance. To prevent this, any
portions of the transducer surface exposed to saltwater must be coated
with antifouling paint. Use only water-based paint.
Caution:
Never use ketone-based antifouling paint. Ketones can attack
many plastics, and could cause damage to the transducer.
Apply paint every 8 months or at the beginning of each boating season.
Clean the transducer periodically with a soft cloth and mild household
detergent. If fouling does occur, use a stiff brush or putty knife to remove
the growth. Wet sanding of the fouled surface is permissible with #220 or
finer-grade sandpaper.
For Lowrance
and Eagle
Products
Pub. 988-0154-081
© Copyright 2004
All Rights Reserved
Printed in USA 051204
LEI Extras, Inc.
4
Pub. 988-0154-081
Installation Instructions for
TH-FLWBL
Through-Hull Transducer
The TH-FLWBL is an 11
°
, 200 kHz transducer designed for use with
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This instruction sheet will help you
install your TH-FLWBL through-hull transducer.
Read these instructions carefully
before
attempting the installation. De-
termine which mounting location is right for your transducer and boat.
Remember, the transducer installation is the most critical part of
a sonar installation.
Recommended Tools and supplies
Recommended tools for this job include: drill, 1/8" (3.17 mm) drill bit for pilot
hole, hole saw with a blade appropriate to your hull type. Required supplies
for this job include:
high quality, marine grade
above- or below-waterline
sealant/adhesive compound (3M
Polyurethane Marine Adhesive Sealant
5200 or equivalent). For saltwater use, you will also need a water-based anti-
fouling paint to prevent sea growth. (Supplies not included.)
Selecting a Transducer Location
The transducer's mounting location is an important factor in its performance.
Consider the following issues carefully before beginning installation.
1. Water flow:
The transducer should be located in an area that has a
smooth water flow. This is typically close to the centerline of the hull.
2. Inboard powered hulls:
On inboard powered hull boats, you should
install the transducer ahead of the propeller shafts and rudders. This is
typically an amidships location ahead of the engine's water intakes.
Mount the transducer amidships, forward of any fittings on the hull that
will cause excessive water noise.
1
Engine
water
intakes
Rudders
Transducer
