87
Coolant fluid
The preparation and monitoring of coolant in inter-cooled engines
is especially important because corrosion, cavitation and freezing
can lead to engine damage. Use as coolant a mixture of a cool-
ing system protective liquid (anti-freeze, ethylene glycol based)
and tap water.
In tropical climates, where anti-freeze availability may be limited,
use a corrosion inhibitor to protect the engine cooling system.
The concentration of the cooling system protective liquid in the
coolant should not fall below/exceed the following limits:
The protective liquid concentration must be maintained under all
circumstances. Therefor if coolant must be added always use the
same mixture of anti-freeze and tap water.
Water quality for coolant preparation
Use preferably tap water.
If an other available fresh water is used; the values given below
must not be exceeded.
C
aution
Never use sea-water or brackish water.
W
arning
Cooling system protective liquids must be disposed
of in accordance with environmental regulations.
9 Operating media
Coolant
Cooling system protective
Water
Protection against
liquid (Anti-freeze)
freezing to
max. 45 vol%
55%
-35°C (-31°F)
40 vol%
60%
-28°C (-18°F)
min. 35 vol%
65%
-22°C (-8°F)
Water quality
min.
max.
pH-value at 20°C (68°F)
6.5
8.5
Chloride ion content [mg/dm
3
]
–
100
Sulfate ion content
[mg/dm
3
]
–
100
Total hardness
[degrees]
3
12
Содержание M4.55 SOLAS
Страница 1: ...Operation manual M4 55 ...
Страница 2: ......