Westerbeke 4.5 KW BGC -60Hz Manual del operador Pagina 30

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Oil Drain
Hose
An
oil sump drain hose
is
installed on the engine with the discharge end secured
by
a bracket at the front
01
the engine. Oil may be drained from this hose
by
removing the cap and the discharge end of the hose from
the support bracket and lowering the hose into a container. The hose cap fitting
is
1/4 inch NPT (National
Pipe Tap) and can be extended, or have a pump added,
for
easier removal
of
the old oil, if desired.
Connecting
Pressure Sensing lJevices
to
Oil Galleries
Oil
pressure sensing devices, such as senders and switches, must not be connected
to
an engine's oil gal-
lery with the use of extended nipples
or
tees. The reason
is
simply that continued engine vibration causes
fatigue of the fittings used
to
make such a connection. If these fittings fail, the engine loses its oil pressure
and quickly seizes.
When additional sensing devices such as switches
or
sensors need
to
be installed that function on engine
oil pressure, these devices must be bulkhead-mounted and connected
to
the oil gallery using an appropriate
grade of lubricating oil hose. Any fittings used
to
connect the hose
to
the gallery must be
of
steel
or
malle-
able iron composition. Brass must not be used for this application.
Sea Water Intake
System
Make sure the intake system (sea water cooling system) is in proper order. Check that the 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the type that may be withdrawn for cleaning
while the vessel
is
at sea and should be mounted below the water line
to
ensure self-priming. Inspect the
sea water
lines to make sure there are no collapsed sections, which would restrict water flow. Make sure
there are no air leaks at any
of
the connections.
Cooling
System
The generator's engine
is
fresh water-cooled by an engine-
mounted heat exchanger.
Sea water
is
used as the heat
exchange's cooling medium. Sea water
is
pumped into
the exchanger
by
a sea water pump and
is
then injected
into the exhaust discharge, carrying with it the heat
removed from the engine's fresh water
cooling system.
Sea water should be supplied
to
the sea water pump
through a flush-type through-hull fitting using a wire-rein-
forced hose between the
through-hull fitting and the
sea
water pump. This sea water should be directed through a
visual-type sea water strainer and then delivered
to
the
pump. Hoses routed from the through-hull fitting to the
strainer and
to
the sea water pump should be wire-rein-
forced
to
prevent the hose from collapsing during the gen-
erator's operation (suction from the pump may collapse a
non-reinforced hose).
Sea water strainers should be
mounted at
or
below the water line
to
make sure the
sea
water line remains primed.
27
BElT
TENSION
3/8-112
INCH
DEFLECTION
AT
LONGEST
SPAN
Weslerbeke Generators
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