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Instruction Manual
4.6.4 COOLANT CHECK
In order to guarantee the lifetime and quality of the product, thus to
optimise engine protection, regular coolant-condition-analysis is
advisable.
The quality of the product can be determined by three parameters:
Visual check
– Verify the outlook of the coolant regarding colour and make sure
that no loose particles are floating around.
pH measurement
– Check the pH value of the coolant using a pH-measuring device.
– The pH-meter can be ordered from Atlas Copco with part number
2913 0029 00.
– Typical value for EG = 8.6.
– If the pH-level is below 7 or above 9.5, the coolant should be
replaced.
Glycol concentration measurement
– To optimise the unique engine protection features of the
PARCOOL EG the concentration of the Glycol in the water
should be always above 33 vol.%.
– Mixtures with more than 68 vol.% mix ratio in water are not
recommended, as this will lead to high engine operating
temperatures.
– A refractometer can be ordered from Atlas Copco with part
number 2913 0028 00.
4.6.5 TOPPING UP/REPLACING COOLANT
– Verify if the engine cooling system is in a good condition (no
leaks, clean,...).
– Check the condition of the coolant.
– If the condition of the coolant is outside the limits, the complete
coolant should be replaced (see section 4.6.8 Replacing the
coolant).
– Always top-up with PARCOOL EG Concentrate / PARCOOL
EG.
– Topping up the coolant with water only, changes the
concentration of additives and is therefore not allowed.
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.
In case of a mix of different coolant products this type
of measurement might provide incorrect values.
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