2 INSTALLATION
2.1
Installing the instrument
•
Place the adhesive drill template in the desired position for the instrument. Drill the four screw holes
7
using a 2.8 mm (
/
connection socket.
Note! Never drill through the instruments four mounting holes as the gasket may be damaged and
thus cause leakage. The warranty is not valid for damage caused by drilling through the mounting
holes.
2.2
Installing transducer
The log and depth transducers need to be positioned carefully. The transducer must remain in the water at
all speeds. Turbulent water causing air bubbles must be avoided.
The best position for the log and depth transducers is as close to the centre line of the boat and as far
forward as possible.
The transducer must always remain submerged in the water.
Power boats: The waterline of fast power boats shortens considerably at
high speeds. Therefore the transducer should be placed at 25-30% from
the front line of the waterline at full speed.
Sail boats: Boats with a fin keel must have the transducer located at
least 250 mm (1 ft) but not more than 750 mm (3 ft) in front of the keel,
and no more than 100 mm off the centre. For boats with full-keel it might
be impossible to locate the transducer at the centre line. If the transducer
is off centre, the angle of the paddle wheel should meet the bow.
The log and depth transducers have the same through hull fitting. Decide
where to position the transducer and cut a 43 mm (1
hole saw. Use sand paper to smooth the surface. Clean the surface
around the hole on both sides of the hull. Use silicon paste for under
water use and spread it on the through hull fitting.
Due to different shapes of hulls, the log transducer has to be calibrated on all boats. See 4.2.5
For mounting of depth transducer, see instruction included with transducer.
") drill. Use a 63 mm (2
64
1
/
") hole saw to cut the clearance hole for the instrument
2
11
/
") hole with a
16
4
English