Zetor HORTUS HS Series, Operator'S Manual

Page: 111 / 142

Water Quality
The right water quality is important for the coolant correct operation. Clear, clean water within the following
analysis values should be used:
Water quality specifications are carried out by local water authority bodies.
If the water does not meet the above criteria, it must be brought to the required values.
Cooling System Corrosion Protection Agent
Caution: Health damaging nitrous amines form when nitritebased cooling system corrosion
protection agents are mixed with amine-based agents!
Note:

Cooling system corrosion protection agents must be disposed of in an environmentally
friendly way.

Observe the notes on the safety datasheet.
The conditioning of the coolant for liquid-cooled DEUTZ compact engines is performed by mixing an anti-
freeze with corrosion protection inhibitors based on ethylene glycol into the water.
The cooling system must be monitored regularly.
This also includes checking the coolant system corrosion protection agent concentration in addition to
checking the coolant level.
The cooling system corrosion protection agent concentration can be checked with conventional test
instruments (e.g. refractometer).
Analysisvalues min max ASTM
phvalue 6,5 8,5 D1293
Chlorine
(Cl)
[mg/l] - 100 D512
D4327
Sulphate
(SO4)
[mg/l] - 100 D516
Totalhardness
(CaCO3) [mmol/l]
[mg/l] 3,56
356
D1126
[°dGH] 20,0 -
[°e] 25,0
[°fH] 35,6
Cooling
system
corrosion
protection
agent
percentage
Water
percentage
Cold
protection
up to
min.35 % 65% -22 °C
40% 60% -28 °C
45% 55% -35 °C
min.50 % 50% -41 °C
MAINTENANCE
110