Bedienungsanleitung Navman 8084 (Seite 107 von 116) (Englisch)

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NAVMAN 8120/8084 Installation and Operation Manual 107

3-2 Flow indicates no fuel or low fuel:

a Check that the number of engines is set to

1 (see section 19-6).

b 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.

c 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.

d Inspect the fuel cable from end to end for

damage such as cuts, breaks, trapped or

squashed sections.

e Check that the fuel filter is clean.

3-3 A twin engine installation shows only

one flow rate:

a Check that the number of engines is set to

2 (see section 19-6).

3-4 Erratic Fuel Flow readings:

a The fuel flow transducer may have been

mounted too close to the fuel pump or

may be subject to excessive vibration.

Refer to the installation instructions

supplied with the fuel transducer.

b Check for leaks in the fuel line or in the

fuel pickup in the tank.

c The Flow filter value is not suitable

for the engine. Check that the value is not

set to zero, then try increasing the value

until a steady flow rate is shown (see

section 19-6).

3-5 There is no reading for fuel economy:

a The boat must be travelling through the

water to generate an Economy reading.

b Check that the paddlewheel on the

transducer is spinning freely and that the

two magnets in the paddlewheel are still

in place.

B-4 Sonar fishfinding problems

4-1 The Instrument operates erratically:

a Check that the transducer does not have

debris (e.g. weed, plastic bag) caught

around it.

b The transducer may have been damaged

during launching, running aground or

while underway with debris etc. If the

transducer has been impacted, it may

have been kicked up on the bracket. If

it is not physically damaged, reset the

transducer back to its original position.

(See the Transom Transducer Installation

Guide.)

c When the transducer is less that 2 ft

(0.6 m) from the bottom, the depth

readings may become inconsistent and

erratic.

d Manual Gain may be set too low, which may

cause weak bottom echo or no fish signals.

If in Manual Gain, try increasing the Gain.

e 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 minimize the

generation of bubbles through cavitation.

(See the Transom Transducers Installation

Guide)

f Check the transducer and power cable

connectors at the back of the display unit

are securely plugged in and the collars

are locked in place. The collars must be

secure for watertight connection.

g Inspect the power cable from end to end

for damage such as cuts, breaks, squashed

or trapped sections.

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Navman 8084 Seite 107

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