Inspection, Maintenance and Adjustment
4-93
DX380LC-7
Antifreeze Concentration Tables
NOTE:
The concentration shall be kept at 50% and in worst
case at 30% minimum for the least corrosion
resistance.
NOTE:
Replacement cycle of the DOOSAN Genuine Product
is 2,000 hours or one year.
Table of Standards for Allowed Tap Water
PPM (Parts Per Million) - Unit of concentration of minor materials.
•
1 ppm = 1 mg/1 kg, 1 mL/1 L
° d.H - Unit of concentration of minor materials.
•
1° d.H = 17 ppm
Ethylene Glycol - DOOSAN Genuine Antifreeze Solution (for all seasons)
(2,000 Hour/1 Year)
Ambient Temperature
Cooling Water
Antifreeze
-20°C (-4°F)
67%
33%
-25°C (-13°F)
60%
40%
-30°C (-22°F)
56%
44%
-40°C (-40°F)
50%
50%
Requirement
Item
Inorganic
chloride
Sulfates
Total
Hardness
Total Solids
Acidity
Value
< 40 ppm
< 50 ppm
< 9.5° d.H
< 340 ppm
5.5 - 9.0
NOTICE
AVOID INJURY
The standard of tap water is for reference only, and may not
be regarded as a standard.
If quality of the water is not trustable, stop using tap water
whenever possible and use distilled water.
