Doosan D50S-5 Operation & Maintenance Manual page 142

DOOSAN prefers the use of distilled water or DOOSAN prefers the use of distilled water or
deionized water to reduce the potential and severity deionized water to reduce the potential and severity
of chemical insolubility. of chemical insolubility.
Water Water Content Content
Chlorides Chlorides (Cl)
Sulfates (SO Sulfates (SO
Total Total hardness hardness
Total Total solids
PH PH
ppm = parts per million ppm = parts per million
Using water that meets the minimum acceptable Using water that meets the minimum acceptable
water requirement may not prevent drop-out of water requirement may not prevent drop-out of
these chemical compounds totally, but should these chemical compounds totally, but should
minimize the rate to acceptable levels. minimize the rate to acceptable levels.
Antifreeze Antifreeze
DOOSAN recommends using automotive antifreeze DOOSAN recommends using automotive antifreeze
suitable for gasoline engines having aluminum alloy suitable for gasoline engines having aluminum alloy
parts. Antifreeze of poor quality will cause corrosion parts. Antifreeze of poor quality will cause corrosion
of the cooling system, and thus always use of the cooling system, and thus always use
automotive antifreeze prepared by a reliable maker, automotive antifreeze prepared by a reliable maker,
and never use it mixed with antifreeze of different and never use it mixed with antifreeze of different
brand. brand.
DOOSAN recommends that the coolant mix contain DOOSAN recommends that the coolant mix contain
50% commercially available automotive antifreeze, 50% commercially available automotive antifreeze,
or equivalent and acceptable water to maintain and or equivalent and acceptable water to maintain and
adequate water pump cavitation temperature for adequate water pump cavitation temperature for
efficient water pump performance. efficient water pump performance.
Premix coolant solution to provide protection to the Premix coolant solution to provide protection to the
lowest expected outside (ambient) temperature. lowest expected outside (ambient) temperature.
Pure undiluted antifreeze will freeze at –23°C Pure undiluted antifreeze will freeze at –23°C
10°F). 10°F).
Maintenance Section Maintenance Section
Fuel Specifications Fuel Specifications
General Fuel Information General Fuel Information
Use only fuel as recommended in this section. Use only fuel as recommended in this section.
Fill the fuel tank at the end of each day of operation Fill the fuel tank at the end of each day of operation
to drive out moisture laden air and to prevent to drive out moisture laden air and to prevent
condensation. Maintain a constant level near the top condensation. Maintain a constant level near the top
of the day tank to avoid drawing moisture into the of the day tank to avoid drawing moisture into the
Acceptable Water Acceptable Water
Limits (PPM) Limits
(Cl) 50 50 maximum maximum
) ) 50 50 maximum maximum
4 4
80 80 mg/l
solids 250 250 maximum maximum
6.0 to to 8.0 6.0
NOTICE NOTICE
NOTICE NOTICE
cooling system which increase the concentration of cooling system which increase the concentration of
dissolved solids and undissolved chemical inhibitors dissolved solids and undissolved chemical inhibitors
in the cooling system. Add antifreeze mixed with in the cooling system. Add antifreeze mixed with
water to the same freeze protection as your cooling water to the same freeze protection as your cooling
system. system.
Use the chart below to assist in determining the Use the chart below to assist in determining the
(PPM)
concentration of antifreeze to use. concentration of antifreeze to use.
mg/l Protection Temperature Protection
Protection to -15 °C (5 °F) Protection to -15 °C (5 °F)
8.0
Protection to -23 °C (-10 °F) Protection to -23 °C (-10 °F)
Protection to -37 °C (-34 °F) Protection to -37 °C (-34 °F)
Protection to -51 °C (-60 °F) Protection to -51 °C (-60 °F)
(- (-
141 141
In general, using a high sulfur fuel may possible In general, using a high sulfur fuel may possible
 
result in corrosion insi result in corrosion inside the cylinder.
Especially in U.S.A. and Canada, Low Sulfur Especially in U.S.A. and Canada, Low Sulfur
 
(300-500mglkg sulfur content) or Ultra Low (300-500mglkg sulfur content) or Ultra Low
Sulfur fuel should be used. Sulfur fuel should be used.
Bio-Diesel fuels. See Bio-Diesel Fuels on next Bio-Diesel fuels. See Bio-Diesel Fuels on next
 
page. page.
NEVER mix kerosene, used engine oil, or NEVER mix kerosene, used engine oil, or
 
residual fuels with the diesel fuel. residual fuels with the diesel fuel.
Antifreeze Concentrations Antifreeze Concentrations
Temperature Concentrations Concentratio
30% antifreeze and 70% 30% antifreeze and 70%
40% antifreeze and 60% 40% antifreeze and 60%
50% antifreeze and 50% 50% antifreeze and 50%
60% antifreeze and 40% 60% antifreeze and 40%
de the cylinder.
ns
water water
water water
water water
water water