Installation; Characteristics Of The Installation Space; Fastening The Unit To The Ground; Ventilation - Mase Generators Marine IS 2500 Manuel D'installation

GENERATORS
1.0.

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-mentioned
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.
2.0.

COOLING WATER CIRCUIT

In electric generators described in this manual, the motor
is cooled by an open-circuit system in which sea water
circulates.
The capacity of the sea water circuit is 900 l/h (IS 2500)
and 1200 l/h (IS 3500/IS 4500/IS 5500).
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
- 14 -
GB
IS 2500 - 3500 - 4500 - 5500
MASE recommend the direct infeed system ref. 1 fig. 3
since this system prevents water under pressure entering
the suction ducts and instead forms a pressure which
can easily be overcome by the water pump of the electric
generator.
Do not apply any type of protective hood to the
direct infeed system.
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 MARKET
ARE USED, MORE CARE AND MORE FREQUENT
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)
2.3. Typical installation with electric generator
below the water line (fig. 5)
IMPORTANT