Operation Manual

4
© 2002
4.3 Coolant Operating Media
4.3.1 Water Quality for Coolant
Preparation
4.3.2 Coolant Preparation
The preparation and monitoring of coolant in
liquid-cooled engines is especially important
because corrosion, cavitation and freezing
can lead to engine damage.
The coolant is prepared by admixing a
cooling system protective liquid with the
cooling water.
The cooling system must be monitored
regularly (see 5.1). The water level and the
cooling system protective liquid concen-
tration should both be checked.
The cooling system protective liquid
concentration can be checked with a
commercially available tester (e.g. gefo
glycomat
®
).
4.3.3 Cooling System Protective
Liquid
DEUTZ cooling system protective agents
can be obtained under order number
01011490 (5 litres) or 1221 1500 (210 litres).
These are nitrite-, amine- and phosphate-
free and provide effective protection
against corrosion, cavitation and freezing.
If the above-mentioned cooling system
agents are not available, the following
products can be used in exceptional cases.
Manufacturer Product description
AVIA AVIA Antifreeze Extra
BASF Glysantin G 48
DEA DEA radiator antifreeze
SHELL SHELL GlycoShell
The concentration of the cooling system
protective liquid in the coolant may not fall
below/exceed the following limits:
Cooling system protective liquid Water
max. 45 Vol.% 55%
min. 35 Vol.% 65%
For the quantity, see table overpage and
information in section 9.1.
Other cooling system protective liquids, e.g.
chemical corrosion inhibitors, can, in
exceptional circumstances, be used in the
coolant, in consultation with DEUTZ Service.
Order the cooling system protective liquid
from: DEUTZ Service
When nitrite-based cooling
system protective liquids are
mixed with amine-based liquids,
harmful nitrosamines are formed.
Cooling system protective liquids
must be disposed of in accor-
dance with environmental
regulations.
The values given below must not be
exceeded.
A test kit (order number 1213 0382) can be
obtained from DEUTZ Service to check the
quality of the water available.
Water quality min. max.
pH-value at 20°C /68° F 6.5 8.5
Chloride ion content [mg/dm3] – 100
Sulfate ion content [mg/dm3] – 100
Total hardness [°dGH] 3 20