IHI NIIGATA MG(L)26HLX User manual

DOCUMENT No. 2086X－50000D
REMARKS 12 2021
INSTRUCTION MANUAL
FOR
NIIGATA DIESEL
MODEL
MG(L)26HLX

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
1. INTRODUCTION & SAFETY PRECAUTIONS
1.1 Introduction
This instruction manual gives an explanation of engine
construction, handling and maintenance procedures to
engine operators.
Engine operators should conduct the inspection, start-
up, running and stopping of engines in accordance with
the proper procedures as directed in this manual only
afterreadingthismanualcarefullytofamiliarize
themselveswiththecontents.
In particular, “Safety Precautions" of this manual
shall be read carefully to have a good understanding
ofthembeforecarryingoutthework.
Furthermore, it is recommended to keep this manual near
athandallthetimewhilecarryingoutthework.
Caution
1. Contents of this manual shall be indifferent to
warrantyclause.
2. Should there be any indistinct and noticeable
points,pleaseaskourworksaboutthematter
through the head quarter or any of the divisions,
branches,salesofficesandservicestations.
3. When replacing parts, please be sure to use our
genuineparts.
1-1

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
4. When ordering parts, please be sure to specify the
followingitems.
(1)NameofPurchaser(PlantorVessel)
(2)EngineModel,EngineSerialNo.
(3)DescriptionofPart
(4)PartsCatalogCollationNo.
(5)Quantity
Where there are any doubtful points having arisen
when ordering parts, when receiving parts and when
mountingparts,besuretocontactus.
5. For details of ancillary equipment, please refer to
individualmakers'instructionmanuals.
6. Contents given in this manual may differ from a
part of the engine purchased from us to some extent
due to alterations of engine specifications and
others. In addition, the contents of this manual
are subject to change without notice for the
modificationofproducts.
Shouldtherebeanyindistinctpoints,please
contactus.
7. This manual shall not be disclosed, presented, or
duplicatedtoanythirdparties.
1-2

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
1.2 Safety Precautions
Most of the accidents arising in handling the engine
are caused by the operator's negligence of basic
safety rules and precautions or maintenance
inspection,etc.asspecifiedbythemanufacturer.
Prior to installation, assembly, running, maintenance
service and inspection, persons engaged in these items
ofworkshouldnecessarilyreadthroughthe
instructionmanualandallotherexhibitscarefully
even for the prevention of danger and use the engine
properly after familiarizing themselves with all of
the knowledge of plant and equipment, safety
information,andcautionaryinstructions.Besidesthe
above, it is recommended to keep this manual near at
handsothatthemanualcanbereferredtoatany
timeincarryingoutthework.
“BasicCautionaryInstructionsonSafety"inthis
manual gives a fundamental explanation necessary for
securementsafety. Atthesametime,labelsgibing
warnings to persons concerned are affixed for the
prevention of physical accidents caused by mishandling
during operation and those caused by inadvertence
during maintenance service. It should be noted that the
instruction manual and labels have to be followed up as
necessary.
Therankofsafetyprecautionsisclassifiedinto
“DANGER",”WARNING"and“CAUTION"inthisinstruction
manualasshownbelow.
Imminentdangerofdeathorsuffering
fromseriousphysicalinjuries.
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DANGER

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Wherepossibledangerofdeathor
sufferingfromseriousphysical
injuries,andoccurrenceofserious
physicaldamagearepresumable.
Wherepossibledangerofsuffering
fromlightormediumphysical
injuries,andoccurrenceofphysical
damagearepresumable.
Evensuchmatterswhichfallunder
may possibly lead to serious results depending upon the
circumstances.Besuretoobservetheinstructionsgiven
by whereeverydescriptioncovers
importantnotes.
1-4
WARNING
CAUTION
CAUTION
CAUTION

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
1.3 Basic Cautionary Instructions on Safety
1.3.1 General cautionary instructions
Cautions to be used inside engine room and enclosure
・ Ventilate the interior of engine room of enclosure.
・ Take care against fire, especially observe no-smoking when
handling fuel oil and lubricating oil, and keep away from open
fire and sparking objects.
・ For the prevention of tumbling and upsetting, try to keep
orderly arrangement at all times and leave out no articles on
the passageway. Always try to keep clean such foothold places
as floor surface, foot-plate, etc. that are made slippery and
exposed to a danger of tumbling or falling if fouled with oil,
water, or the like.
・ Make sure of location of passageways and exits so as to take
shelter in a safe area forthwith when put in dangerous state in
the course of work.
Cautions for garments and protective outfits
・ Put on helmet and safety shoes at all times inside the engine
room and enclosure.
When carrying out any work necessitating the Protective outfits
(gloves, protective goggles, earplugs, etc.) as listed in
“Practical cautionary instructions on safety", be sure to put on
specified protective outfits.
・ Do not put on any unmatched oversize garments and worn-out
clothes. Take off jewels and accessories before starting on
work.
1-5

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Cautions in the course of running
・ Where any unusual noise, malodor, or vibration is detected, stop the
engine depending upon the circumstances. Clear up the cause and
make repairs and restoration before restarting on running.
Cautions in handling outfits
・ Use outfits under normal condition at all times and make sure of
usage of them before starting on work.
・ Make sure that lifting outfits such as chain, hook, rope, etc. are free
from abnormalities at any time and observe service criteria and
permissible load.
・ Hang hooks on the proper positions and use stays necessary.
・ Allow slinging and crane operations to be conducted by qualified
persons.
Cautions during execution of works
・ Prior to repair and inspection work, post a signboard, " NO RUNNING ",
on the conspicuous place exposed to view to prevent the engine from
being started by mistake during the work.
・ When carrying the work by the use of foot plate, manifold, etc. as
footholds, it may lead to a serious physical accident caused by falling.
To prevent this, give careful attention to footings for the sake of safety.
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This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
・ Since manual turning of the engine may lead to a danger of
serious physical accidents, be sure to carry it out by selecting the
proper method and place.
Never carry out the following.
※Turning by the use of radiator fan.
※Turning by the use of starter motor and start air.
・ When handling a weighty article exceeding 20kg in weight, use a
crane or hoist, or allow two persons or more to engage in the
handling work. (In the case of joint work also, the weight should
be limited to less than 20kg per person.)
・ When handling refrigerants such as liquid nitrogen, put on
protective outfits for the prevention of difficulty in breathing and
frostbite, and carry out the work in the well-ventilated area.
・ When handling combustible substances such as solvent,
degreaser, etc., carry out the work carefully in accordance with
maker's instruction manual.
・ When using compressed air for cleaning etc., put on protective
mask and safety goggles.
Cautions in replacement of parts
・ Unless our genuine parts are used for replacement of parts, it
may result in serious failures and physical accidents. To prevent
this, be sure to use our genuine parts.
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This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Others
・ Do not remodel the engine and plant equipment without our
permission.
・ Should there be any indistinct points on safety and handling,
please contact us.
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This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
1.3.2 Practical cautionary instructions Remarks
Remarks
COMBUSTIBLE 1. Equipment and pipelines of fuel oil line, lubricating
oil line, and gas fuel line for gas engine.
(1) In cases of fuel leakage from equipment and pipe-
lines of fuel oil line and gas fuel line for gas
engine, there is a danger of fire hazard.
Conduct inspection at all times to avoid causing
bolt looseness, gasket deterioration, and
equipment and pipeline cracking.
(2) In cases of lubricating oil leakage from equipment
and pipelines of lubricating oil line, there is a danger
of fire hazard.
Conduct inspection at all times to avoid causing
bolt looseness, gasket deterioration, and
equipment and pipeline cracking.
(3) In cases of a possibility of mist-like leakage due to
high pressures in fuel oil line and lubricating oil line,
there is a danger of fire hazard.
Stop the engine running forthwith and take
preventive measures against leakage.
2-1-01～
2-9-01
3-5-01～
3-5-19
2-1-01～
2-9-01
3-5-01～
3-5-19
2-1-01～
2-9-01
3-5-01～
3-5-19
1-9
WARNING
WARNING
WARNING

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
COMBUSTIBLE
EXPLOSION
2．Equipment and pipelines of exhaust gas line
(1) In cases of hot exhaust gas leakage from equipment
and pipelines of exhaust gas line, there is a
danger of fire hazard.
Stop the engine running forthwith and take
Preventive measures against leakage.
3．Anti-freeze
(1) Keep away from the fire since anti-freeze entails
the danger of ignition to scald.
1．Crankcase door
(1) Where the engine is brought to a stop due to
abnormal heat generation being detected inside
the engine room, there is a danger of explosion
if crankcase door is allowed to open forthwith.
Open the door after the lapse of a cooling period
of not less than 20 minutes.
2-1-01～
2-9-01
3-5-01～
3-5-19
1-4-01～
1-4-05
2-6-03～
2-6-04
2-4-01～
2-9-01
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WARNING
WARNING
DANGER

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
EXPLOSION
(2) There are cases where scald is caused by the
actuation of crankcase safety valve due to
abnormal pressure rise inside the crankcase.
Do not gain access to the blow-off nozzle.
2．Cylinder safety valve
(1) There are cases where scald is caused by the
actuation of cylinder safety valve due to
abnormal pressure rise inside the cylinder.
Do not gain access to the blow-off nozzle.
3．Exhaust flue safety valve of gas engine
(1) There are cases where scald is caused by the
actuation of the exhaust flue safety valve of gas
engine due to flame failure, etc.
Do not gain access to opening of safety valve.
2-4-01～
2-9-01
2-4-01～
2-9-01
－
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WARNING
WARNING
DANGER

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
EXPLOSION 4．Battery
(1) There is a danger of fire hazard due to emission
of flammable gas from battery.
Keep the surroundings of battery away from the
fire.
5．Engine room for gas engine
(1) In cases of gas leakage from gas fuel pipeline,
there is a danger of explosion inside the engine
room and enclosure for gas engine.
To prevent this, be sure to keep the ventilating
fan running.
－
－
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WARNING
WARNING
WARNING

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
EXPLOSION (2) In cases where the engine is brought to a stop
by the actuation of gas detector, there is a
danger of explosion caused by the actuation of
gas detector.
Close the gas partition valve and turn OFF AC
power supply.
Thereafter open the doors of engine room and
enclosure to effect ventilation thoroughly.
After making sure that the concentration of leak
gas has come down to the alarm set point or
below,
carry out the repair work of gas leak location.
(3) In cases where an alarm is given by the actuation
of gas detector during the period of engine stop,
there is a danger of explosion.
Close the gas partition valve and turn OFF AC
power supply.
Thereafter open the doors of engine room and
enclosure to effect ventilation thoroughly.
After making sure that the concentration of leak
gas has come down to the alarm set point or below,
Carry out the repair work of gas leak location.
(4) When re-starting the engine after a stop due to the
delayed starting, the remaining unburned fuel gas in
the intake and exhaust lines and cylinder may ignite
to cause explosion.
In such cases, carry out “Air run" before re-
starting with gas supply valve and each cylinder
indicator cock being kept closed to purge the
interior from the residual fuel gas.
－
－
－
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WARNING

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
ELECTRIFICATION
1．Motor
(1) Each kind of motor entails the danger of
electrification.
Before turning ON power supply, check if there are
any abnormality in wire connections and peel-off of
covering.
2．Electrical devices
(1) Electrical devices such as various switches,
electrical governor, fuel scale level
transmitter, etc. and wiring entail the danger
of electrification.
Before turning ON power supply, check if there
are any abnormality in wire connections and
peel-off of covering.
－
－
1-14
WARNING
WARNING
WARNING

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
ELECTRIFICATION
POISON
(2) Electrical devices built into remote control stand,
alarm panel, solenoid valve unit, etc. and etc. and
separately-installed accessory devices entail the
danger of electrification.
Before turning ON power supply, check if there are
any abnormality in wire connections and peel-off of
covering.
(3) Ignition line wiring, booster coil and high tension coil
of gas engine entail the danger of electrifi-cation due
to high voltage being applied to them while the engine
is running.
Never touch them until the engine has come to a
stop.
Before starting the engine, check if there are any
abnormality in wire connections and peel-off of
covering.
1．Mercury thermometer
(1) The mercury applied to mercury thermometers is
poisonous.
Wipe off the mercury spilt from broken
Thermometers.
－
－
－
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WARNING
CAUTION

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
POISON 2．Cooling water additives
(1) The rust-preventive agent, inhibitor and
anti-freeze for use with cooling water line are
poisonous to the human body.
Handle them carefully so that they will not come
into eyes or come in contact with the body.
3．Battery
(1) Battery electrolyte is poisonous.
Never allow it to come in contact with skins or
come into eyes.
1-4-01～
1-4-05
2-4-01
2-6-03～
2-6-04
3-5-01～
3-5-19
5-4-01～
5-4-08
－
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CAUTION
WARNING

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
SLIPPING
FALLING
1．Foot plate
(1) The top surface of foot plate, that is slippery if
led with oil etc., entails the danger of tumbling and
Wipe off thoroughly the oily matter left on the foot
plate and shoes.
2．Topside of engine
(1) The topside of engine intake manifold, air duct,
etc., that is slippery in some cases, entails the
danger of tumbling and falling.
Do not step on their topside unless safety has
been confirmed.
1．Topside of foot plate
(1) The topside of foot plate entails the danger of
falling. Watch your footing and hold the
handrail to the extent possible when moving on
the topside.
2-1-01～
2-9-01
4-1-01～
5-4-08
2-1-01～
2-9-01
4-1-01～
5-4-08
2-1-01～
2-9-01
4-1-01～
5-4-08
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CAUTION
CAUTION
CAUTION

This document is property of NIIGATA POWER SYSTEMS CO., LTD. It must be neither reproduced nor communicated nor published without permission.
Remarks
FALLING
ENTANGLED
2．Topside of engine
(1) The topside of engine intake manifold, air duct,
etc. entails the danger of falling.
Do not step on their topside unless safety has
been confirmed.
1．Flywheel
(1) There is a danger of parts of the body being
entangled into the flywheel area in the course
of engine running.
Do not allow your hand, leg, etc. to gain access
to the area.
2．Rotating part
(1) There is a danger of parts of the body being
entangled into the rotating parts (coupling,
output shaft, radiator fan, etc.) in the course
of engine running.
Do not allow your hand, leg, etc. to gain access
to the parts.
2-1-01～
2-9-01
4-1-01～
5-4-08
2-1-01～
2-9-01
2-1-01～
2-9-01
1-18
WARNING
WARNING
CAUTION