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Westerbeke WPDS-20 Manual del operador Pagina 14

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Sea Water
Intake
System
Make sure the intake system (sea water cooling system)
is
in proper order. Check that the through-hull inlet,
sea cock and strainer are unobstructed.
Sea cocks and strainers should be at least one size greater than
the inlet thread
of
the sea water pump. The strainer should be
of
the type that may be withdrawn for clean-
ing while the vessel is
at
sea and should be mounted below the water line
to
ensure self-priming. Inspect
the sea water lines
to
ensure there are
no
collapsed sections, which would restrict water flow. Make sure
there are no air leaks at any
of
the connections. Placing double clamps at the sea water plumbing connec-
tion, located below the water
line, is strongly recommended.
Fuel
System
The fuel system should be installed in such a manner as to allow the engine-mounted mechanical fuel lift
pump
to
maintain a positive inlet pressure
to
the fuel injection pump under all operating conditions. The
minimum size
of
the fuel supply line and fuel return line is 1/4 inch, inside diameter, and there should be a
primary fuel filter
installed between the fuel tank and the fuel lift pump. Only one fuel filter is installed on the
engine, between the mechanical fuel
lift pump and the injection pump; this filter has a replaceable filter ele-
ment.
The fuel tank's fuel pickup tube should be clear and unobstructed. No screen
or
gauze strainers should be
incorporated in the fuel pickup tube.
Make sure that the fuel supply and return
lines are securely anchored
to
prevent chafing and that all fillings
are sufficiently tightened
to
prevent leaking. Also make sure your fuel system has a positive shut-off valve;
know its location and how it operates.
NOTE:
DO
NOT
use spring-loaded check valves in the fuel supply line in lieu
of
mechanical
shut-off valves. This type of valve can create fuel starvation problems for the engine's fuel sys-
tem.
Fuel tanks that are located below the engine's fuel system level
must
have its fuel return at the tank extend-
ing down into the tank in the same manner as a pickup tube, otherwise fuel siphoning out of the engine's
fuel system through the return will take place.
Ensure that the fuel tank filler is properly sealed
to
prevent water entry should
tt
become awash. The fuel
tank's vent should be routed so as
to
prevent water entry as well.
Be
sure there
is
a fire extinguisher Installed near the unit and that it
is
properly maintained. Be familiar with
its use. An extinguisher with the NFPA rating of ABC
is
appropriate for
all
applications in this environment.
Westerbeke Diesel
Engines
20
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