GENERATORS
- 17 -
IS 21.5-23.5
GB
5 FUEL CIRCUIT
The unit is fed by diesel fuel through the tubes marked
“
Fuel inlet
”(fig.10 ref.2 ) and “
fuel outlet
” (fig.10 ref.3).
This latter is used for the return of the excess fuel. There
is no need for filters in connections to the fuel tank, since
the unit already contains a fuel filter; however it is
advisable to fit a tap onto the fuel supply line downstream
of the tank and a single-acting valve (check valve) to
prevent the fuel system emptying for any reason. Use a
valve with a 50 millibar opening. (Max head 0.8 mt.)
The fuel pipes should be in hydrocarbon-resistant rubber,
of inner diameter 8 mm.
For further information, read the
engine instruction manual, supplied by the engine
manufacturer.
6 ELECTRICAL CONNECTIONS
6.1
Battery connection
To start off the unit an independent battery of 12V is
needed, capacity 100 Ah.
It should be connected to the terminal of the generator
(fig.10, rif.4) with cables of section 25 mm
2
up to distances
of 5 metres and with cables of section 35 mm
2
for longer
distances, and following the sequence of operations
described below:
- First connect the positive pole (
+
) of the battery to the
terminal marked with the symbol (
+
) on the generator.
- Then connect the negative pole (
-
) of the battery to the
terminal marked with the symbol (
-
) on the generator.
- Wipe the connections with special mineral grease to
protect against oxidation and corrosion.
The generator includes an electronic device to auto-
matically recharge the start-up battery, giving
40 A, at a voltage of 12 V, when fully charged.
Install the battery in a well-
ventilated area, away from the generator and from
any device which might produce heat or sparks.
Periodically check the state of the connections of the
terminals and the water level of the battery. If the
cables need to be disconnected, follow the instruc-
tions for connection in reverse order.
Do not invert the poles of the connecting cables since
serious damage might be caused to the generator and
the battery.
Do not connect other loads to the battery.
In order to reduce galvanic currents to a minimum, the
(
-
) of the battery of the electric generator should not be
connected to the (
-
) of the other batteries on board.
6.2
Control panel connection
There are two remote control panels available, installable
on the bridge, which can be connected to the generator for
starting and stopping.
Both models are supplied with a 20 m electric connection
cable with a connector fitted at the end.
Fit the connector of the connection cable to the special
coupling located at the lower part of the instrument panel
casing inside the generator (Fig.14, Ref.1) and the opposite
part to the remote control panel.
6.3
AC connection
This connection is made through the power terminal
board located on the alternator of the generator (Fig.13
Ref.1). This terminal board is accessed after having
removed the closing panel as shown in Fig.12 Ref.1.
This range of generators may be operated at both 115V -
50Hz / 120V - 60Hz and 230V - 50Hz / 240V -60Hz.
Hence two different connections (and thus uses) are
possible according to the following configurations:
1
Parallel connection: in this configuration there is the
following output:
- 115V-50Hz or 120V-60Hz between the points 11 and
4 by connecting the alternator outputs 33-11 and 2-4
according to the diagram in Fig.11 Ref. 2.
2
Series connection: in this configuration it is possible
to draw:
230V-50Hz or 240V-50H between the points 11 and 4
by connecting the alternator outputs 33-2 according
to the diagram in Fig.11 Ref. 1
With the series connection the power may be drawn
simultaneously at a voltage of 115/230V-50Hz and 120/
240V-60Hz, as per the diagram in Fig.11 Ref. 3.
If the series connection is used, to draw a voltage of
115V-50Hz/120V-60Hz (Fig.15 Ref. 1 and 3), the current
must not exceed 50% of the rated current.
- Use the jumpers on the terminal board (Fig.15 Ref.1,2,3)
to obtain both the parallel and the series connections.
- Ensure that the sum of the loads to be fed does not
exceed the rated output of the generator.
- The generator is equipped with a magnetothermal
switch which cuts the power in the event of an overload
or short-circuit.
