Operator`s manual
Fill the fresh water system as follows:
I.
Remove the pressure cap from the manifold.
2.
Pour a clean, fresh water coolant mixture into the manifold and allow enough time for the coolant to
fill the fresh water cooling system.
3.
Replace the pressure cap on the manifold.
4. Remove the plastic cap from the coolant recovery tank and fill the tank with coolant halfway between
the
ADD mark and the
MAX
mark. Replace the cap.
S.
Start and run the engine long enough for the engine
to
warm up
so
that the thermostat will open,
allowing the coolant
to
flow through the engine block and to the rest
of
the fresh water coolant
system.
6. Add coolant
to
the recovery tank, as required,
to
top off the fresh water coolant system.
Thermostat
Generally, thermostats are
of
two types. One is simply a choking device which opens and closes as the
engine's temperature rises and falls. The second type has a bypass mechanism. Usually this is a disc on
the bottom
of
the thermostat which moves downward to close off an internal bypass passage within the
head. Since 1980, each type ofthermostat has a hole punched through it. The hole is a bypass to prevent
the exhaust manifold from overheating during the engine's warm-up. Replacement thermostats must have
this design characteristic.
Sea Water Circuit
The sea water flow is created
by
a gear-driven, positive displacement, neoprene impeller pump. The
pump draws sea water directly from the ocean through the sea cock and sea water strainer and passes the
water to the heat exchanger's sea water inlet.
The sea water passes through the heat
exchanger's tubes, from which heat from the
fresh water system is absorbed, and then is
discharged from the cooling system
over-
board through the water-injected wet
exhaust system.
A zinc anode, or pencil, is located in the sea
water cooling circuit within the heat exchanger.
The purpose
of
the zinc anode is to sacrifice
itself
to
electrolysis on other components
of
the system. The condition
of
the zinc anode
should be checked monthly and the anode
cleaned or replaced, as required.
Spare anodes
should be carried on board.
WESTERBEKE GENERATORS
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New
Anod.,
54
Replace
Replace
Zinc Anode Conditions
Clean
or
Replace