Electrical Connections; Fuel Circuit - Mase Generators IS 7.6 Installation Manual

Anti-siphon valve must be inserted
between the inlet of the sea water pump and exhaust
manifold as indicated in Fig. 11
The drainage duct of the anti-siphon valve must run
beneath the valve itself in order to prevent water
accumulating in the duct, which should always
remain empty to allow air to pass through when the
unit is switched off. (see fig. 9)
It is recommended that the drain hose from the anti-
siphon valve be fed into the bilge, as small amounts of
water might be drained through it during normal operation.
The cooling circuit is connected to the heat exchanger
fitting as shown in Figure 10.
4.6 Drainage system
The exhaust system of the generator must be separate
from that of the main engine(s)
The length of the tube from the
highest point of the exhaust system to the muffler
should not exceed 80". This is to prevent the water
left in the drainage duct returning to the motor after
filling the tank muffler, when the unit is turned off.
1 - Tank muffler
This dampens the noise of the drainage and stops
the water flowing back towards the motor. The
muffler should be installed no less than 1 metre
away from the generator and positioned at a height
as per fig. 4/5.
2 - Silencer
This further reduces noise. It should be installed no
more than 40" from the exhaust through-hull.
3 - Exhaust Through-Hull
This must be installed in a position that is constantly
above sea level in all the vessel's possible condi-
tions of use.

5 FUEL CIRCUIT

The unit is fed by diesel fuel through the tubes marked
"fuel inlet"(fig. 12 ref. 2 ) and "fuel outlet" (fig. 12 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 shut-off 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 31")
The fuel lines should be in diesel fuel-resistant rubber,
of inner diameter 8 mm (.31").
For further information, read the
engine instruction manual, supplied by the engine
manufacturer.

6 ELECTRICAL CONNECTIONS

6.1 Battery connection
A battery of 12V, 70 Ah. is needed to start off the
generator.
It should be connected to the terminal of the generator
(fig.12, ref.4) with cables of section 25 mm
distances of 16' 6" and with cables of section 35 mm
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
15 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 gen-
erator 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 which can
be connected to the generator for starting and stopping.
Both models are supplied with a 65' 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. 16 Ref. 1) and the
opposite part to the remote control panel.
6.3 A.C. Connection
This connection is made through the power terminal
board located on the alternator of the generator (Fig.
14 Ref. 1). This terminal board is accessed by
removing the panel as shown in Fig.13 Ref. 1.
up to
2
for
2
12