Simrad NX40 User Manual

Simrad NX40/45 Installation and Operation Manual 109
2-3 Unit position different from same
position on local charts:
Unit in simulate mode. Turn simulate •
mode off.
Incorrect chart datum. Select the •
correct chart datum.
Map shift has been applied wrongly. •
Clear map shift, then reapply if
necessary.
2-4 Can not see boat on chart:
Press •
to switch to center on boat
mode.
2-5 The time or date on satellite display
is wrong or off:
No GPS x.•
In simulate mode. Turn simulate mode •
off.
Local time offset is wrong. The Local •
Time Offset must be changed when
daylight saving time starts or ends.
2-6 Autopilot not responding to Unit;
no NMEA output:
NMEA output disabled or the required •
NMEA sentences are not turned on.
Check NMEA settings.
Check that the instrument is connected •
correctly.
B-3 Fuel consumption problems
3-1 Fuel used or remaining seem
inaccurate:
unit is not wired for auto power.•
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.
The •
Set remaining fuel value must be
reset after every refuelling.
The fuel tank may not rell to the same •
capacity each time due to air pockets.
This is particularly noticeable with
underoor tanks.
Fuel transducers wear out over time •
and should be replaced after every
5000 litres of fuel.
3-2 Flow indicates no fuel or low fuel:
Check that the number of engines is •
set to 1.
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.
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 ow.
A fuel lter 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.
Inspect the fuel cable from end to •
end for damage such as cuts, breaks,
trapped or squashed sections.
Check that the fuel lter is clean.•
3-3 A twin engine installation shows
only one flow rate:
Check that the number of engines is •
set to 2.
3-4 Erratic Fuel Flow readings:
The fuel ow 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.
Check for leaks in the fuel line or in the •
fuel pickup in the tank.
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 ow rate is shown.
3-5 There is no reading for fuel
economy:
The boat must be travelling through •
the water to generate an
Economy
reading.

Simrad NX40 Specifications

General

Brand	Simrad
Model	NX40
Category	Marine Equipment
Language	English