7-92
MAINTENANCE
G. Cooling System
Coolant
IMPORTANT: Use soft water as a coolant. Do not use
strong acid or alkaline water. Use the coolant with
genuine Hitachi Long-Life Coolant (LLC) mixed by 30
to 50 %.
If a coolant mixed with less than 30 % of Hitachi
Long-Life Coolant is used, service life of the cooling
parts may be shortened due to damage by freezing or
corrosion of coolant system parts.
Recommended Products Alternative Products
Hitachi Genuine Long-Life
Coolant
Organic type corrosion
inhibitor long life coolant
Antifreeze Mixing Ratio
Air Temperature
[ºC]
Mixing Ratio
[%]
ZX120-6 class ZX160-6 class
Antifreeze
[L]
Soft water
[L]
Antifreeze
[L]
Soft water
[L]
-1 30 6.3 14.7 7.2 16.8
-15 35 7.4 13.6 8.4 15.6
-20 40 8.4 12.6 9.6 14.4
-25
45 9.5 11.5 10.8 13.2
-30 50 10.5 10.5 12.0 12.0
Air Temperature
[ºC]
Mixing Ratio
[%]
ZX200, 240-6 class ZX300-6 class ZX330-6 class
Antifreeze
[L]
Soft water
[L]
Antifreeze
[L]
Soft water
[L]
Antifreeze
[L]
Soft water
[L]
-1 30 8.4 19.6 12.3 28.7 12.0 28.0
-15 35 9.8 18.2 14.4 26.6 14.0 26.0
-20 40 11.2 16.8 16.4 24.6 16.0 24.0
-25
45 12.6 15.4 18.5 22.6 18.0 22.0
-30 50 14.0 14.0 20.5 20.5 20.0 20.0
Precautions for handling antifreeze
d
CAUTION: Antifreeze is poisonous.
Antifreeze is poisonous; if ingested, it can cause serious injury or death. Induce vomiting and get emergency
medical attention immediately.
If antifreeze is accidentally splashed into eyes, flush with water for 10 to 15 minutes and get emergency
medical attention.
When storing antifreeze, be sure to keep it in a clearly marked container with a tight lid. Always keep
antifreeze out of the reach of children.
Pay attention to fire hazards. Antifreeze is specified as a dangerous substance in the fire protection law.
When disposing of antifreeze, be sure to comply with all local regulations. When storing or disposing of
antifreeze, be sure to comply with all local regulations.
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