I.S. 18 / 21 / 24 / 27 50
Hz
- 10
GB
GB
2 PRESCRIPTIONS FOR SAFETY DURING
INSTALLATION AND SET-UP
- The personnel in charge of installation and starting of the
generator must always wear a protective helmet; wear
safety shoes and overalls.
- Use protective gloves.
- Do not leave disassembled parts, tools or anything else
not forming part of the system on or near the engine.
- Never leave inflammable liquids or cloths soaked in
inflammable liquids in proximity of the generator, near
electric equipment (including lamps) or parts of the
electrical system.
- Take the necessary precautions to prevent the danger
of electrocution.
3 INSTALLATION
3.1 Housing characteristics
The generator must be installed in a sufficiently ventilated
room able to guarantee the small amount of air necessary
for engine combustion.
The room must be acoustically separated and isolated
from the living quarters.
The generator must be positioned in such a way as to
facilitate routine maintenance operations.
Installation in the propulsion engine room is advisable
provided that it conforms to the above mentioned
conditions.
3.2 Generator anchorage
To fix the generator, arrange for a base to support the
weight and vibrations.
Drill holes in the base as shown in Fig.1.
3.3 Ventilation
The generator is equipped with an internal forced cooling
system by means of a water/air exchanger.
The quantity of air required for combustion is sucked in
through the air intake on the base (Fig. 2): Therefore,
always check that this intake is free of any obstruction.
4 COOLING WATER CIRCUIT
The generator engine is cooled by a closed-circuit
system with heat exchanger.
During installation a seawater feed circuit must be set up
for cooling and an exhaust system for the combustion
gas and water mixture.
4.1 Seawater feed system
Normally two types of water intake systems are adopted
on boats (Fig. 3).
1
- Direct intake system
2
- System with baffle
MASE recommends the direct intake system (Fig.3,
Ref.1) as it prevents inflow of pressurised water into the
intake ducts, instead generating a vacuum which the
pressure head of the the generator water pump can
easily override.
Do not fit any type of protection cap on the direct intake
system.
The system with baffle may cause the following problems:
a
- If mounted with the slots facing the bow: In this case
during navigation and with the generator off, pressure
is created in the water intake duct, which may
cause the system to fill until reaching the exhaust
ports and hence water may enter the cylinders.
b
- If mounted with the slots facing the stern:
In this case during navigation a vacuum may be
created in the water intake duct such as to prevent
the water pump from activating the cooling system
or such as to limit the throughput with consequent
overheating of the generator.
4.2.1 Typical installation with generator above the
waterline (fig.4)
1 Sea exhaust
2 Silencer
3 Exhaust
4 Water filter
5 Main system tap
6 Sea intake
7 Drain tap
A
- Pipes - inner diameter Ø75 mm.
B
- Pipes - inner diameter Ø25 mm.
C
- Pipes - inner diameter Ø16 mm.
