Operator`s manual
Location
The location should be such that it is dry, above low-lying vapor areas, and away from being splashed
by
bilge water
or
water from above. It should be properly ventilated and accessible
for
minor servicing and
repairs. Access
for
major repairs should be given consideration as well. The location must be properly ven-
tilated
to
provide the fresh cooling air
for
the generator end and
for
engine combustion.
Hot
generator dis-
charge air
must be removed from
the
generator area. The platform on which the generator and its mounting
rails are located should be strong enough
to
support the generator unit during all angles of vessel operation.
Exhaust
System
The exhaust system provides an outlet line
to
vent engine exhaust gases out
of
and away from the vessel.
The system also discharges sea water which has passed through the engine's sea water circuit
by
mixing it
with hot exhaust gases. This mixing helps
to
cool the exhaust gases and exhaust elbows and pipe. The ex-
haust system and the sea water supply
to
the exhaust must be configured
to
prevent the siphoning of sea
water into the exhaust through the sea water cooling circuit and
to
prevent the entry
of
sea water into the ex-
haust through the circuit's thru-hull discharge port.
If not prevented, sea water entering through the dis-
charge
port
can fill the exhaust system's muffler and enter the engine's cylinders. This will prevent proper
starting and possibly cause damage
to
internal engine components.
Generator
Above
Water Line
SeaWater
Fump
The sea water supply hose
to
the exhaust system's water injection elbow should be routed Oooped) at least
12 inches above the vessel's water line. An anti-siphon break should be installed at the
top
of
this
loop
when
the generator set is installed at
or
below the water line (see page 9). The
top
of
the
loop
should be placed
high enough above the vessel's water line
so
as
to
remain above the water line when
the
vessel is underway,
no
matter what the angle
of
heel
or
roll may be.
The sea water supply thru-hull seacock fittings
must be
of
the flush-hull type. High-speed
scoop
type fittings
should not be used, as they tend
to
encourage siphoning.
8