Bedienungsanleitung Navman FISH 4200 (Seite 28 von 32) (Englisch)

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NAVMAN

FISH 4200 Installation and Operation Manual

is located. To stop problems from electrical

noise, try:

- rerouting the power and transducer

cable(s) away from the boat’s other

electrical wiring.

- routing the unit's power cable directly to the

battery instead of through a fuse block or

ignition switch.

4. Bottom is not displayed:

a) The fishfinder may have Manual Range

selected and the depth may be outside the

range value selected. Either change the

fishfinder to Auto Range or select another

depth range - see section 3-9.

b) The depth may be outside the fishfinder’s

range. While in Auto Range, the display unit

will flash the last depth displayed, then display

“--.-” to indicate that there is no bottom

detected. A display of the bottom should

reappear when it is shallower than 180m (600

ft).

5. The bottom is displayed too far up the

screen:

The fishfinder may have Manual Range

selected and the selected Range value is too

high for the depth. Either change the fishfinder

to Auto Range or select another depth range -

see section 3-9.

6. Bottom echo disappears or erratic digital

reading while the boat is moving:

a) Ensure the back of the bottom surface of the

transducer is slightly lower than the front and

the front is as deep in the water as possible in

order to minimise the generation of bubbles

through cavitation. See the Transducer

Installation Guide for more information.

b) The transducer may be in turbulent water. Air

bubbles in the water disrupt the echoes

returned, interfering with the fishfinder’s ability

to find the bottom or other targets. This often

happens when the boat is reversed. The

transducer must be mounted in a smooth flow

of water in order for the fishfinder to work at all

boat speeds.

c) Electrical noise from the boat’s motor can

interfere with the fishfinder. Try some

suppression spark plugs.

7. If the fishfinder beeps when turned on but

nothing is displayed:

The fishfinder may be operating, but the

contrast settings may have been set too high

or low. Power off the fishfinder. Then hold

and press to reset the fishfinder to the

default contrast setting.

8. The wrong language is displayed:

See section 2.

9. Fuel USED or REMAINING seem inaccurate:

a) If the engine is run whilst the fishfinder is

powered off, the fishfinder does not record

the amount of fuel used during that engine

run. Consequently, the FUEL REMAINING

value will be higher than the actual amount of

fuel remaining in the tank.

To avoid this problem, use the Auto Power

Wiring option described in section 5.4. This

ensures that the fishfinder powers on

automatically whenever the boat’s ignition is

switched on.

b) In rough seas, fuel may surge back and forth

through the fuel transducer, resulting in

incorrect readings. Try installing a one-way

valve between the fuel transducer and the

fuel tank.

c) The SET REMAINING fuel value must be

reset after every refuelling. See section 4-7.

d) The fuel tank may not refill to the same

capacity each time due to air pockets. This is

particularly noticable with underfloor tanks.

e) Fuel transducers wear out over time and

should be replaced after every 5000 litres of

fuel.

10. FLOW indicates no fuel or low fuel

a) Check that the fuel cable connectors are

securely plugged in and the collar is locked in

place. The collar must be locked in place to

give a watertight connection.

b) A fuel transducer may be clogged. If so,

remove the transducer from the fuel line and

gently blow through it in the opposite direction

to the fuel flow.

A fuel filter between the fuel transducer and

the fuel tank must be installed as per the fuel

installation guide. Failure to do so will void

the warranty.

c) Inspect the fuel cable from end to end for

damage such as cuts, breaks, or squashed

sections.

d) Check that the fuel filter is clean.

e) Installation implications.

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Navman FISH 4200 Seite 28

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