R1040 MAINTENANCE MANUAL
Page 11 of 48
2.6
Cooling System
2.6.1
Radiator type cooling system
The Radiator type cooling system is used.
The Schematic diagram, of the typical water circuit with Radiator type cooling system, is
Shown in the Fig. 2.6.1 below.
Fig. 2.6.1
IMPORTANT
•
In order to have the efficient cooling and optimum performance of the engine, we
recommend using the radiator supplied by KOEL.
•
It is also necessary to ensure proper ventilation to avoid hot air re-circulation into the
cooling system. Please refer KOEL Genset Manual for details.
2.6.2
Coolant
In summer, use fresh water with anticorrosion additive for engine cooling to avoid rust
formation.
Water should be clear and free of any corrosive chemicals such as chloride, sulphates and
acids.
We recommend to use, coolant blend of soft water and one of the following rust preventive
compound as mentioned below
Nalco-2000
35 cc per liter.
In winter, use Ethylene glycol antifreeze diluted with coolant blend as mentioned above in
the proportion in the cooling system as mentioned below
Ambient
temperature
0
C
Ratio by volume of antifreeze
to cooling winter blend
+5 to –5
20:80
-6 to -15
33:67
-16 to -25
40:60
Below -25
50:50(Max. permissible ratio)
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