Installation; Characteristics Of The Installation Space; Fastening The Unit To The Ground; Ventilation - Mase Marine IS 9000 Manuel D'installation

GENERATORS

1 INSTALLATION

1.1.

Characteristics of the installation space

The generator must be installed in a sufficiently aired
space, supplying a little amount of air necessary for the
combustion of the motor.
The space must be separate and acoustically insulated
from living areas.
The generator should be positioned so that normal
maintenance operations can easily be carried out.
Propulsion motors are recommended for installation in
the area as long as they comply with the above-men-
tioned conditions.
1.2.

Fastening the unit to the ground

To fasten the unit securely, a base should be installed to
absorb vibrations and support the weight.
Drill holes in the base according to the instructions in
fig. 1.
1.3.

Ventilation

The generator is equipped with an internal forced cooling
system through a water/air exchanger.
The air needed for combustion is taken in through the
opening on the base (fig. 2) so care must be taken to
ensure that this opening is always free.

2 COOLING WATER CIRCUIT

In electric generators IS 9000 / 9500, the motor is cooled
by an closed circuit system heat exchanger.
On installation a sea water feed circuit should be fitted for
cooling and a waste system to expel the mixture of flue
gas and water.
2.1.

Sea water feed system

Boats usually use one of two systems to collect water
(fig. 3):
1 - Direct infeed system
2 - System with baffle
MASE recommends the direct infeed system ref. 1 fig. 3
since this system prevents water under pressure enter-
ing the suction ducts and instead forms a pressure which
can easily be overcome by the water pump of the electric
generator.
WARNING
Do not apply any type of protective hood to the direct
infeed system.
INFORMATION
THE DIRECT INFEED SYSTEM SUPPLIED BY MASE
HAS BEEN MODIFIED TO PREVENT SOLID BODIES
ENTERING THE SYSTEM AND BLOCKING IT.
IF OTHER MATERIALS AVAILABLE ON THE MAR-
KET ARE USED, MORE CARE AND MORE FRE-
QUENT CLEANING IS NECESSARY.
The baffle system might cause the following problems:
a - If it is installed with the slots facing the prow.
In this case, during navigation and with the electric
generator off, pressure is accumulated in the water
infeed duct which might cause the system to fill up,
even as far as the exhaust port, allowing water to
enter the cylinders.
b - If it is installed with the slots facing the stern.
In this case a depression might accumulate in the
water infeed duct during navigation, preventing the
water pump from starting up the cooling plant, or
limiting the capacity and subsequently causing the
electric generator to overheat.
2.2 Typical installation with electric generator
above the water-line (fig. 4)
1 Sea intake
2 General tap-water
3 Tap to drain system
4 Water filter
5 Electric generator
6 Barrel muffler
7 Silencer
8 Sea drainage nozzle
9 Water line
A - Tubes, internal diameter 50 mm
B - Tubes, internal diameter 20 mm
C - Clamps
D - Tubes, internal diameter 50 mm
WARNING
The measurements shown in fig. 4-5 should
correspond exactly.
WARNING
The muffler (fig.4, ref.6) has the job of collecting the
water in the exhaust pipes when the generator motor
is turned off, thus preventing it from flowing into the
motor through the exhaust manifold and valve. For
this reason it is essential that the position of the
muffler and the length of the pipes indicated on the
installation chart be fully respected.
IS 9000 - 9500
13
- -