4.3 Coolant
4.3.1 Quality of
Water
for
Coolant
The values listed below must not be exceeded.
In
ordertoexaminethe quality
of
yourwater, atest
case can be ordered from DEUTZ under Order
No.
12130382.
Water
quality
min.
max.
pH
value
at
20°C
6.5
8.5
Chloride
ion
content
[mg
/
dm
3
]
-
100
Sulphate
ion
content
[mg
/
dm
3
]
-
100
Total
hardness
[OdGH]
3
20
4.3.2 Coolant Treatment
In
the case
of
liquid-cooled engines, special
attention must be paid to the treatment and
control
of
the coolant, as the engine may
otherwise become damaged as a result
of
corrosion, cavitation and freezing.
The treatment
of
the coolant is carried out by
adding a cooling system protectant to the
cooling water.
Thecooling system mustbe continuouslymoni-
tored, see 5.1.
In
addition to checking the
coolant level, this also involves checking the
concentration
ofthe
cooling system protectant.
The cooling system protectant concentration
can be checked with commercially available
testers (example: gefo glycomat ®).
Operating Media
4.3.3 Cooling System
Protectants
DEUTZ cooling system protectant must
be
pur-
chased
in
drums under Order
No.
01011490
(5
litres) or
1221
1500 (210
litres).
These are
nitrite,
amine and phosphate-free, and provide effective
protection against corrosion, cavitation and freez-
ing.
Iftheabove mentioned cooling system protectant
is
unavailable, the following products may be
used
in
exceptional cases.
Manufacturer
Product
designation
AVIA
AVIA
Antifreeze
Extra
ARAL
Antifreeze
Extra
BASF
Glysantin
G
48
DEA
DEA
Radiator
Antifreeze
SHELL
SHELLGlycoShel1
Thecooling systemprotectant
in
thecoolantshould
notfallbeloworexceedthefollowing concentration:
Cooling
system
protectant
Water
max.
45
Vol.%
55%
min.
35
Vol.%
65%
Filling volume, see chart over page
in
combina-
tion with specifications
in
Chapter 9
.1.
The use ofother cooling system protectants, e.g.
chemical anti-corrosion agents,
is
possible
in
exceptional cases. Consult DEUTZ Service.
I
If nitrite-based cooling system
protectants
are
mixed
with
amine-based agents, danger-
ous nitrosamines are formed.
A
Cooling system protectants must
('f)
, be disposed
of
in an environmen- 0
• tally-friendly manner.
~
@
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