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Navman Diesel Fuel Flow Sensors Manual

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Diesel fuel flow sensor kit Installation and Operation Manual
NAVMAN
Installation sequence
The fuel lines are modified and temporary
straight through pipes fitted where the sensors
will be fitted. The engine is run, then the real
sensors are fitted. This procedure ensures
that debris from the installation does not enter
the sensors.
The recommended installation sequence is:
1 Read this manual and the documentation
that comes with the other parts. Read
section 7-1 for background information on
fuel pipes and fittings.
2 Plan the installation and choose where
the fuel flow sensors and cables will
be located (see section 7-3). Choose
suitable fittings for connecting the sensors
to the fuel lines (see section 6-3)
3 Install temporary straight through pipes in
the fuel line where the sensors will later
be fitted (see section 7-4).
4 Bleed the fuel lines and test run the
engine. Then remove the two straight
through pipes and fit the two fuel flow
sensors (see section 7-5).
6 Install the tachometer (see section 7-6).
7 Install the cables to link the parts of the
system together and to the Navman
display instrument (see section 7-7).
8 Setup the Navman instrument to use the
fuel flow sensors and tachometer, as
described in the instrument’s installation
and operation manual. Take the boat on
a test run and check that the sensors are
performing correctly.
If you are unsure where a part should be
installed, mount and wire the part temporarily,
without cutting holes in the boat. After the sea
trials have been completed, install and wire the
part permanently.
7 Installing the diesel flow sensor kit
Correct installation is critical to the
performance of the unit. Before starting
installation, it is vital to read this manual
and the documentation that comes with
the other parts.
Ensure that any holes that you cut will not
weaken the boat’s structure. If in doubt,
consult a qualified boat builder.
One important thing to stress is the need
for cleanliness in the installation process.
Diesel engines, and the Navman sensors
are built to fine tolerances - do not allow
any dust, dirt, water or particles to enter
the fuel system.
DAMAGE WILL RESULT if you ignore
this warning.
Warnings
If the boat has twin engines then a second diesel flow sensor kit can be fitted and connected to
the same Navman instrument. To install the kits, fit a kit to each engine, following the instructions
above for each engine and tank. At the display unit, connect the sensor cables from the two kits
in parallel (see section 7-7-2).
The sensors need to be identified as port and starboard in the display unit. You may find more
instructions included in the display head manual.
7-1 Twin engine installations
… 22 …


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Navman Diesel Fuel Flow Sensors User Manual - German - 34 pages

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