Nanni QMF 6M, Инструкция по эксплуатации

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The recommendations given in this chapter do
not cover all the installation possibilities, but offer
recommendations and guidelines for installing a Nanni
Diesel generator set. Certain equipment may not be
part of the order or installation.
Installation
The generator set and the coupled equipment must
be accessible for maintenance work. The generator
set must be mounted on a rigid and solid structure on
the hull that is capable of withstanding all the dynamic
stresses and the weight of the set as a whole. The
generator set must not be inclined by more than 10°
when the craft is stopped.
Avoid installing the generator set too close to walls that
are too thin that could reverberate. In all cases, the
generator set should not be installed directly on a wood
or plywood surface or in contact with walls. A solid steel
support will reduce the vibrations and noise produced
by the generator set.
The various cables and electrical extension sections
must be securely affi xed to the generator set and/or
to the compartment walls (do not let them hang in the
hold).
Ventilation
The temperature inside the compartment must not
exceed 50°C with a maximum difference of 20°C in
relation to the ambient temperature.
For slow craft, ventilation must be provided by a fan.
Fresh air must circulate from front to back. The air
intake should be situated at the bottom front of the
engine compartment and the exhaust at the top back in
order to ensure optimal air circulation.
Electrical installation
An incorrect or faulty electrical installation could
cause leakage currents that could affect the galvanic
protection of the generator set and consequently the
generator set itself. The installer should ensure that all
the necessary precautions are taken to guarantee the
corrosion protection of the generator set.
Fuel feed system
The generator set must have its own fuel feed system.
The tanks must be placed as far as possible at the same
height as or slightly higher than the engine.
The fuel return pipe must always be situated under the
minimum tank fi ll level.
The maximum height between the fuel pump and the
minimum tank level is of 0.5 m. An electrical pump must
be installed above this value.
Cooling system
The generator set must have its own seawater cooling
system with no connection to the engine system or
other equipment. The seawater intake must always face
the back of the craft (regardless of the type of craft) and
must be as close as possible to the genset. Use static
type seawater strainer.
The height of the seawater fi lter and the exhaust outlet
must be 150 mm above the waterline at full load.
An anti-siphon must always be installed if the generator
set is below the waterline. It should be placed at least
500 mm and at most 2 metres above the waterline at
full load..
The waterlock box must be positioned as close to the
engine and as low as possible.
The exhaust pipe situated between the waterlock and the
hull outlet should form a gooseneck. The highest point
of the gooseneck should be at a maximum distance of 3
metres from the waterlock and at a maximum height of
1.5 metres in relation to the waterlock.
Installation recommendations