Lubricant System; Fuel System - Hyundai DHY18KSEm Operation And Maintenance Manua

When change the coolant, cleaning is needed for the
cooling system, the cleaning procedures are
suggested as follows:
◆Empty the cooling system
◆Use water to rinse cooling system
◆Feed 15%~20% condensed coolant to the cooling
system, timely run the generator set for one or two
times then discharge the coolant
◆Empty the cooling system then use normal mixed
liquid to rinse
◆If contaminant still exists, then repeat the cleaning
procedure until no contaminant exists in the system
◆After the system has been fully rinsed, feed new
coolant which has been mixed according to specified
proportion
Note:
If the cooling system is cleaned periodically, only rinse
it with small amount of additives or clean water is
enough.
2.6.4
Feeding of coolant
◆Before adding coolant to the coolant system, please
make sure the radiator 's discharge valve and the
engine's discharge valve are tightly closed.
◆Add the coolant to the system in a proper speed so
that to avoid air cock being formed in the system.
◆Air shall be discharged through the adding hole or
the discharge valve in the engine body. If the cooling
system is furnished with heater, the control valve for
the heater shall be opened. Ensure ventilation of the
unit when adding the coolant.
Note:
The air discharge valve in the engine body shall be
located in the top point of the water path or near the
thermostat or water temperature sensor, or you can
slightly loose the water temperature sensor and
re‐tighten it when you see coolant run out from it so
that to discharge the air.
◆When adding the coolant, the surface of liquid shall
reach to the level that is 5 centimeters below the
radiator's welded surface (or shall reach the level
indicating Line). Be sure that the generator set has
stopped and become fully cooled before adding
Coolant. Before the system is capable of ventilation
and the liquid is added to the required level, please
don't start the generator set. After the coolant being
fed, please start and pre‐heat the generator set, and
at the same time check the liquid level and add
coolant if needed. The coolant which needs to be
added to the radiator shall be of the same
specification as that existing in the radiator.
◆For some generator sets installed with coolant filter,
please open the filter's valve before put into use.
2.7
Lubricant system
Lubricant system is composed of oil pan, oil pump,
strainer, oil pipe, oil cooling unit, oil filter unit, and
the oil path inside of the engine and all kinds of
lubricant parts which are in relative motion etc. The
main purpose of the lubricant system is to provide
sustained tempered oil film between the parts which
are in motion so that to reduce friction and wear, and
draws off part of the heat absorbed by the parts,
bath mechanical part, improve sealing effect and
prevent rust from each part's surface.
Users can determine the model of lubricant according
to the specific working environment and conditions.
For the first time lubricant, normally users shall
change it within 100 hours upon and from the time
when the generator set first started. (details refer to
engine maintenance manual)
Note:
The critical point is to use qualified lubricant oil which
is with proper viscosity and conform to the engine's
requirement, and periodically change the lubricant oil
and oil filter so that to ensure the generator set's
normal working. The malfunctions caused by wrong
model of lubricant oil with low quality or long time no
change of lubricant oil, or oil filter do not belong to
the scope of warranty.
We recommend that high quality multi grade SAE
15W/40 high service engine oil in diesel engines are
used. At ambient temperatures above ‐15 degree
Celsius is 15W40. The minimum API oil quality levels
recommended for use is CH / CI‐4, CH or CI‐4 can be
used in areas where CF4 oil is not yet available, but
the oil interval must be reduced API CA, CB, CC, CD,
CE, CG4 categories not recommended, do not use.
2.8
Fuel system
Our generator sets requires the fuel ‐ diesel shall be
clean, without air and water and with proper
pressure, of which all kinds of parameters such as
sulphur content etc. shall meet national standards,
and end use temperature grade meet the
requirement of customer's working environment.
Generally generator set's fuel system includes two
parts, that is, engine's fuel system and external fuel
system. HYUNDAI is only responsible for installation
of the internal fuel system which includes fuel tank
and connecting fuel pipes etc.
2.8.1
Fuel Recommendations
8
User manual