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XAHS 146 Dd - XATS 156 Dd - XA(S) 186 Dd - XAVS 166 Dd - XAHS 186 Dd
4.6 COOLANT
4.6.1 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.
4.6.2 PARCOOL EG
PARCOOL EG is the only coolant that has been tested and
approved by all engine manufacturers currently in use in Atlas
Copco compressors and generators.
Atlas Copco's PARCOOL EG extended life coolant is the new range
of organic coolants purpose designed to meet the needs of modern
engines. PARCOOL EG can help prevent leaks caused by corrosion.
PARCOOL EG is also fully compatible with all sealants and gasket
types developed to join different materials used within an engine.
PARCOOL EG is a ready to use Ethylene Glycol based coolant,
premixed in an optimum 50/50 dilution ratio, for antifreeze protection
guaranteed to -40°C (-40°F).
Because PARCOOL EG inhibits corrosion, deposit formation is
minimized. This effectively eliminates the problem of restricted flow
through the engine coolant ducts and the radiator, minimizing the risk
for engine overheating and possible failure.
It reduces water pump seal wear and has excellent stability when
subjected to sustained high operating temperatures.
PARCOOL EG is free of nitride and amines to protect your health and
the environment. Longer service life reduces the amount of coolant
produced and needing disposal to minimise environmental impact.
PARCOOL EG
- 5 liter can: order number 1604 5308 00
- 20 liter can: order number 1604 5307 01
- 210 liter barrel: order number 1604 5306 00
To ensure protection against corrosion, cavitation and formation of
deposits, the concentration of the additives in the coolant must be kept
between certain limits, as stated by the manufacturer's guidelines.
Topping up the coolant with water only, changes the concentration and
is therefore not allowed.
Liquid-cooled engines are factory-filled with this type of coolant
mixture.
PARCOOL EG Concentrate
- 5 liter can: order number 1604 8159 00
4.6.3 HANDLING PARCOOL EG
PARCOOL EG should be stored at ambient temperatures, while
periods of exposure to temperatures above 35°C (95°F) should be
minimized. PARCOOL EG can be stored for a minimum of 5 years in
unopened containers without any effect on the product quality of
performance.
PARCOOL EG is compatible with most other coolants based on
ethylene glycol, but you only get the benefits of 5 years protection
when its used on its own. Exclusive use of PARCOOL EG is
recommended for optimum corrosion protection and sludge control.
For simple density-measuring of Ethylene Glycol and Propylene
Glycol in general the standard available ‘density’ measuring devices
are used to measure the concentration of EG. In case a device is used
to measure EG, no PG can be measured afterwards as a result of the
difference in the density. More specific measurements can be done by
the use of a refractometer. This device can measure both EG and PG.
A mix of both products will be show unreliable results!
Mixed EG coolants with identical glycol type can be measured by use
of a refractometer as well as the ‘density’ system. The mixed coolants
will be considered as one product.
The use of distilled water is recommended. If you have exceptionally
soft water it would be acceptable, as well. Basically, the engine metals
are going to corrode to some extent no matter what water you use, and
hard water will encourage the resulting metal salts to precipitate.
PARCOOL EG comes as a pre-mixed coolant to safeguard the quality
of the complete product.
It is recommended that topping up of the cooling system is always done
with PARCOOL EG.
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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