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Maintenance: Cooling system, general
Cooling system, general
The freshwater system is the internal cooling system of the engine. It is a closed system and shall always be fil-
led with coolant that protects the engine from internal corrosion and frost damage if the climate requires it. Anti-
corrosive additives become less efficient with age and the coolant must therefore be changed in accordance with
the recommendations in the maintenance schedule.
The rawwater system can be connected to seawater or a central cooling system.
WARNING! Never open the pressure cap or drain the cooling system when the engine is warm. Steam or
hot fluid may spurt out.
WARNING! The coolant is dangerous to your health and an environmental hazard. Handle coolant with
care and dispose of old coolant in accordance with local regulations.
IMPORTANT! For coolant specification, refer to chapter "Technical data: Coolant specification" in the
back of this manual.
IMPORTANT! Check the coolant level on a cold stationary engine.
IMPORTANT! Coolant to be added should have the same concentration as the coolant in the engine. Do
not add plain water.
IMPORTANT! Certain parts of the system are made of light alloy. Chemical additives must therefore not
be used when cleaning the system.
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