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HANDLING COOLANT EG
COOLANT EG should be stored at ambient
temperatures, while periods of exposure to
temperatures above 35 °C (95 °F) should be
minimized. COOLANT EG can be stored for a
minimum of 5 years in unopened containers without
any effect on the product quality of performance.
COOLANT 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 COOLANT 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.
COOLANT 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 COOLANT EG.
COOLANT CHECK
In order to guarantee the lifetime and quality of the
product, thus optimising engine protection, regular
coolant-condition-analysis is recommended.
The quality of the product can be determined by three
parameters:
Visual check
Verify the appearance of the coolant with regard to
its 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 Denyo 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 COOLANT EG, the concentration of the
Glycol in the water should always be above 33
vol.%.
Mixtures exceeding a 68 vol.% mix ratio in water
are not recommended, as this will lead to high
engine operating temperatures.
A refractometer can be ordered from Denyo with
part number 2913 0028 00.
TOPPING UP/REPLACING COOLANT
Verify whether 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 no longer up to
standard, the complete coolant should be replaced
).
Always top-up with COOLANT EG Concentrate /
COOLANT 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 measuring might
provide incorrect values.
Summary of Contents for DU-190
Page 1: ...8 Instruction Manual English...
Page 2: ......
Page 16: ...16 Main Parts...
Page 18: ...18 COMPRESSOR REGULATING SYSTEM...
Page 22: ...22 CONTINUOUS PNEUMATIC REGULATING SYSTEM...
Page 60: ...60 ELECTRIC SYSTEM Circuit diagram 9829 3801 10...
Page 61: ...61 Circuit diagram 9829 3801 10...
Page 62: ...62 ELECTRIC SYSTEM Wire harness 1094 3133 02...
Page 67: ......
Page 68: ......
