4. Regular Inspections
31
Cautions for Using Biodiesel
Allowable Fuel Under Warranty
1. Korea: Article 115 Schedule 33 "Ultra Low Sulfur Diesel"
of the Clean Air Conservation Act
2. Europe: EN590:2013 AC:2014, EN16734:2016
3. North America: ASTM D975-15C Grade 1D or 2D
4. Japan: JIS K2204:2007 (lubricity ≤ 520μm, FAME max.
5%)
5. China: GB252:2015 and GB19147:2013
6. India: IS 1460 2005 Amm. 10 BS III or BS IV
7. Brazil: ANP69/2014
8. Russia: GOST R32511-2013 (excluding Articles 3 and 4)
9. HVO
Characteristics and effects of 7% or higher biodiesel: If the
amount of biodiesel in the fuel exceeds 7%, the oxidation
stability decreases below that of ordinary diesel and the fuel
reacts more easily with oxygen in the air, resulting in
problems such as the formation of sludge and deposits,
reduced lubrication, increased microbes, and excessive
water in the fuel. If this foreign matter enters the engine,
problems requiring high maintenance costs may occur,
including premature clogging of the primary/secondary fuel
filters, corrosion of fuel system components, and wear of
components of the high-pressure injection system.
Hence, biodiesel must be stored only for less than six months
from the date when it was manufactured and less than three
months of being added to the generator set. Using fuel which
has exceeded this storage period can cause critical damage
to fuel system components, so make sure to follow these
guidelines. In addition, if the fuel tank and fuel line
components contain copper, lead, tin or zinc, the biodiesel
oxidizes more quickly, resulting in engine damage due to fuel
within a very short period of time or premature clogging of the
primary/secondary fuel filters.
Cautions for Using Biodiesel in Different
Types of Generators
1. ESP: Since fuel must be stored for long periods of time,
it is forbidden to use more than 7% biodiesel, and in order
to ensure stable engine operation in emergencies, we
recommend using fuel without any biodiesel added.
Hyundai Doosan Infracore is not liable for any problems
in ESP generator engines resulting from the use of more
than 7% biodiesel. If using biodiesel is absolutely neces-
sary, make sure to check the quality and state of fuel peri-
odically as per EN 15751 to ensure a minimum level of
safety.
2. PRP/COP: Operating the engine with more than 7%
biodiesel causes an increase in the pressure difference
between the primary and secondary fuel filters and a
gradual reduction in fuel flow due to the formation of
sludge and deposits and an increase in microbes, so
make sure to replace the filters every 250 hours — half of
the 500-hour replacement interval normally recom-
mended for filters. In addition, to minimize the formation
of condensate and microbes in the fuel tank, when the
engine is turned off, fill the fuel tank to the top, and when
the engine is to be placed in storage and left unused for
longer than one month, replace the biodiesel in the fuel
tank with pure diesel and idle the engine in an unloaded
state for 30 minutes or longer to flush out all of the
biodiesel remaining in the engine fuel system before
placing the engine in storage in order to minimize
damage to fuel system components due to biodiesel.
< Primary/secondary fuel filter replacement intervals when
more than 7% biodiesel is used >
Item ESP PRP COP
Primary fuel
filter
Do not use more
than 7% biodiesel
Every 250 hrs. or
6 months, which-
ever occurs first
Secondary fuel
filter
Do not use more
than 7% biodiesel
Every 250 hrs. or
6 months, which-
ever occurs first
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