Westerbeke BTDA 15.0 Operator's Manual & Installation Manual page 56

Antifreeze of poor quality or wtthout rust inhibttors will cause corrosion wtthin the cooling system.
Always use antifreeze which is compatible wtth aluminum cooling system components and is
made by a reliable manufacturer. Never mix different brands of antifreeze. Make sure that the
cooling system of the engine
is
well cleaned before adding antifreeze. Recommended antifreeze
for year round use is ZEREX or PRESTONE wtth rust inhibttors.
In order to control the concentration of the mixture. mix the antifreeze and freshwater thoroughly
before adding it to the cooling system.
Antifreeze
Concentration
Freezing
Temperature
ANTIFREEZE CONCENTRATION DATA
% 13 23 30 35 45 50
60
• F 23 14 5
-4
-22
-40
-58
(" C) (-5) (-to) (-IS) (-20) (-30)
(-40)
(-58)
NOTE: An antifreeze concentration should be selected on the basis of
a temperature which is about 10" F (5" C) lower than the actual
atmospheric temperature expected.
Filling the Fresh Water System
1. Remove the pressure cap from the manifold.
2. Pour a clean. antifreeze mixture into the manifold and allow enough time for the coolant
to fill the fresh water cooling system.
3. Start the engine and allow it to come up to its operating temperature. Monttor the coolant
in the manifold and add antifreeze coolant
as
air is expelled. Once all air is expelled from
the system. fill the manifold to the filler neck and install the pressure cap.
4. Remove the plastic cap from the plastic coolant recovery tank and fill the tank wtth coolant
halfway between the ADD mark and the MAX mark. Replace the plastic cap.
5. Run the engine and observe the coolant's expansion flow into the plastic recovery tank.
6. Check for leaks between the pressure cap/filler neck and the plastic recovery tank. Stop
the engine and allow it to cool. Coolant should be drawn back into the cooling system
as the engine's temperature comes down. Check the coolant passage in the filler neck to
ensure
it
is open to flow. Clean
it
wtth a heavy piece of wire. This is passage • A".
7. Add coolant to the recovery tank. as required. to top off the fresh water coolant system
and periodically check to see that the manifold is full of coolant by removing the pressure
cap when the engine is cold.
Westerbeke Generators
54 15.0KW BTDA