4. INSTALLATION
38
Remarks on installation
• Do the installation with the ship moored at
a dock, etc. The water depth should be 6.5-
32 feet (2-10 meters).
• Install the transducer in the engine room.
• Do not power the unit with the transducer in
the air, to prevent damage to the transduc-
er.
Installation procedure
If the thickness of the hull varies, then the at-
tenuation of the ultrasound pulse. Select a lo-
cation where attenuation is the lowest.
1. Select 2-3 locations considering the four
points mentioned below. (You will finalize
the mounting location through some trial
and error later.)
• Mount the transducer at a location 1/2
to 1/3 of the length of the boat from the
stern.
• The mounting location is between 15 to
50 cm from the centerline of the hull.
• Do not place the transducer over hull
struts or ribs which run under the hull.
• Avoid a location where the rising angle
of the hull exceeds 15°, to minimize the
effect of the boat's rolling.
Inside-hull transducer mounting location
2. Clean the face of the transducer to re-
move any foreign material. Lightly rough-
en the face with #100 sandpaper. Also,
use the sandpaper to roughen the inside
of the hull where the transducer is to be
mounted.
3. Wipe off any sandpaper dust from the
face of the transducer.
4. Dry the face of the transducer and the
hull. Coat the transducer face and mount-
ing location with silicone sealant. Use
about 1/3 of the sealant. Hardening be-
gins in approx. 15-20 minutes so do this
step without delay.
Coating transducer face with silicone sealant
5. Attach the transducer to the hull.
Press the transducer firmly down on the
hull and gently twist it back and forth to re-
move any air which may be trapped in the
silicone sealant.
6. Check the picture as follows:
1) Connect the power/data and trans-
ducer cables to the display unit.
2) Turn on the display unit.
3) Rotate the
MODE
knob to select sin-
gle frequency (LF: 50 kHz or HF: 200
kHz).
4) Push the
GAIN
knob to open the [Auto
Gain] setting window.
5) Push the
GAIN
knob to select [Off]
and press the
ENTER
key.
6) Rotate the
GAIN
knob to set the gain
to "5".
7) Press the
RANGE
key to open the
[Range] setting window.
8) Use
X
to select [Manual].
9) Push the
RANGE
key to set the range
to 10 feet (or 30 meters).
10)Press the
ENTER
key.
1/3
1/2
Centerline
Transducer
mounting
location
50 cm
50 cm
15 cm
15 cm
Transducer
Silicone
Sealant
Hull
Silicone
Sealant
Summary of Contents for FCV-627
Page 1: ...FISH FINDER FCV 627 OPERATOR S MANUAL www furuno com B R I L L GAIN ...
Page 62: ...D 1 ...
Page 63: ...D 2 ...
