Vetus VF5 Especificações descarregar pdf (Página 121)

119

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:

Cooling system protective

liquid (Anti-freeze)

Water Protection against

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)

The protective liquid concentration must be maintained under all

circumstances. Therefore 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 available fresh water is used; the values given below must not

be exceeded.

Water quality min. max.

pH-value at 20°C (68°F) 6.5 8.5

Chloride ion content [mg/dm

] – 100

Sulphate ion content [mg/dm

] – 100

Total hardness [degrees] 3 12

Caution

Never use sea-water or brackish water.

Warning

Cooling system protective liquids must be dis-

posed of in accordance with environmental regu-

lations.

9 Operating media

Coolant

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 ... 139 140

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Vetus VF5 Especificações Página 121

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