Instruction Manual
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4.9 Coolant specifications
The use of the correct coolant is important for good heat transfer and protection of liquid-cooled
engines. Coolants used in these engines must be mixtures of good quality water (distilled or de-
ionised), special coolant additives and if necessary freeze protection. Coolant that is not to
manufacturer's specification will result in mechanical damage of the engine.
The freezing point of the coolant must be lower than the freezing point that can occur in the area.
The difference must be at least 5 °C (9 °F). If the coolant freezes, it may crack the cylinder block,
radiator or coolant pump.
Consult the engine's operation manual and follow the manufacturer's directions.
Never remove the cooling system filler cap while coolant is hot.
The system may be under pressure. Remove the cap slowly and only when
coolant is at ambient temperature. A sudden release of pressure from a heated
cooling system can result in personal injury from the splash of hot coolant.
It is strongly recommended to use Atlas Copco branded coolant.
Never mix different coolants and mix the coolant components outside the
cooling system.
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