MTU 12V4000L62FB User manual

Operating Instructions
Gas engine
12V4000L62FB
16V4000L62FB
MS150098/03E

Engine model kW/cyl. Application group
12V4000L62FB 100 kW/cyl. 3A, continuous operation, unrestricted
16V4000L62FB 100 kW/cyl. 3A, continuous operation, unrestricted
Table 1: Applicability
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All information in this publication was the latest information available at the time of going to print. MTU Friedrichshafen GmbH
reserves the right to change, delete or supplement the information provided as and when required.

Table of Contents
1 Safety
1.1 Important provisions for all products 5
1.2 Correct use of all products 7
1.3 Personnel and organizational requirements 8
1.4 Initial start-up and operation – Safety
regulations 9
1.5 Safety regulations for startup and operation,
specific information for gaseous fuel or dual
fuel supply applications 11
1.6 Assembly, maintenance, and repair work –
Safety regulations 13
1.7 Safety regulations for assembly,
maintenance and servicing work, specific
information for gaseous fuel and dual fuel
supply or applications 17
1.8 Fire and environmental protection, fluids
and lubricants 18
1.9 Fire prevention and environmental
protection, fluids and lubricants, auxiliary
materials, specific information for gaseous
fuel supply in gaseous-fuel or dual-fuel
applications 20
1.10 Standards for warning notices in the text
and highlighted information 21
2 Transport
2.1 Transport 22
2.2 Lifting specifications 23
2.3 Crankshaft transport locking device 24
3 General Information
3.1 Engine side and cylinder designations 26
3.2 Engine – Overview 27
3.3 Monitoring, Control and Regulation
Equipment 29
3.3.1 Gas engine phase 3 system – Overview 29
3.3.2 Purpose of the units 31
3.3.3 Sensors – Overview 33
3.3.4 Engine wiring – Overview 37
4 Technical Data
4.1 12V 4000 L62FB, 16V 4000 L62FB engine
data, fuel-optimized (TA-Luft) 42
4.2 Firing order 46
4.3 Engine – Main dimensions 47
5 Operation
5.1 Runtimes at partial load 48
5.2 Putting the engine into operation after
extended out-of-service periods (>3 months) 49
5.3 Putting the engine into operation after
scheduled out-of-service-period 50
5.4 Re-starting the engine following an
automatic safety shutdown 51
5.5 Control, starting and stopping sequences 52
5.6 Engine – Start 54
5.7 Operational checks 55
5.8 Emission values – Check 56
5.9 Engine – Shutdown 58
5.10 Engine – Emergency shutdown 59
5.11 After stopping the engine – Engine remains
ready for operation 60
5.12 After stopping the engine – Putting the
engine out of operation 61
6 Maintenance
6.1 50-hours check 62
6.2 Maintenance task reference table [QL1] 63
7 Troubleshooting
7.1 Fault messages – Key 64
7.2 Fault messages in genset control system log 66
7.3 Engine Control Unit – Fault messages 105
8 Task Description
8.1 Engine 141
8.1.1 Engine – Barring manually 141
8.1.2 Checking machine room for smell of gas 142
8.2 Crankcase Breather 143
8.2.1 Oil separator – Filter replacement 143
8.2.2 Crankcase breather – Pressure control check
and adjustment 145
8.3 Ignition System 146
8.3.1 Spark plug – Replacement 146
8.3.2 Spark plug – Removal 147
8.3.3 Spark plug – Installation 148
8.3.4 Spark plug connector – Replacement 150
8.3.5 Spark plug connector ‒ Removal 151
8.3.6 Spark plug connector – Installation 152
8.3.7 Ignition system – Ignition timing check 154
8.4 Valve Drive 155
8.4.1 Valve clearance – Check and adjustment 155
8.4.2 Valve protrusion – Measurement 158
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8.4.3 Valve gear – Lubrication 161
8.4.4 Cylinder head cover ‒ Removal 162
8.4.5 Cylinder head cover ‒ Installation 163
8.5 Exhaust Turbocharger 164
8.5.1 Exhaust turbocharger – Cleaning 164
8.6 Gas System 174
8.6.1 Gas supply - Checking gas lines for leaks 174
8.7 Air Filter 175
8.7.1 Air filter – Replacement 175
8.7.2 Air filter – Removal and installation 176
8.8 Starting System 177
8.8.1 Starter – Replacement 177
8.8.2 Starter – Removal 178
8.8.3 Starter – Installation 179
8.9 Lube Oil System, Lube Oil Circuit 181
8.9.1 Engine oil level – Check 181
8.9.2 Engine oil – Change 182
8.9.3 Engine oil – Sample extraction and analysis 183
8.10 Oil Filtration / Cooling 184
8.10.1 Engine oil filter – Replacement 184
8.11 Coolant Circuit, General, High-Temperature
Circuit 185
8.11.1 Engine coolant – Level check 185
8.11.2 Engine coolant – Change 186
8.11.3 Engine coolant – Draining 187
8.11.4 Engine coolant ‒ Filling 189
8.11.5 Coolant vent line (engine coolant circuit) –
Replacement 190
8.12 Low-Temperature Circuit 191
8.12.1 Mixture coolant level ‒ Check 191
8.12.2 Mixture coolant – Change 192
8.12.3 Mixture coolant – Draining 193
8.12.4 Mixture coolant ‒ Filling 194
8.13 Wiring (General) for Engine/Gearbox/Unit 195
8.13.1 Engine cabling – Check 195
9 Appendix A
9.1 Abbreviations 196
9.2 MTU Onsite Energy contact person / service
partner 198
10 Appendix B
10.1 Special Tools 199
10.2 Index 205
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1 Safety
1.1 Important provisions for all products
General
This product may pose a risk of injury or damage in the following cases:
• Incorrect use
• Operation, maintenance and repair by unqualified personnel
• Changes or modifications which are neither made nor authorized by the manufacturer
• Noncompliance with the safety instructions and warning notices
Nameplates
The product is identified by nameplate, model designation or serial number. This data must match the speci-
fications in these instructions.
Nameplates, model designation or serial number can be found on the product.
All EU-certified engines delivered by MTU come with a second nameplate. When operating the machine in the
EU: The second nameplate must be affixed in a prominent position as described in the accompanying specifi-
cations.
Emission regulations and emission labels
Responsibility for compliance with emission regulations
Modification or removal of any mechanical/electronic components or the installation of additional compo-
nents including the execution of calibration processes that might affect the emission characteristics of the
product are prohibited by emission regulations. Emission-related components must only be serviced, ex-
changed or repaired if the components used for this purpose are approved by the manufacturer.
Noncompliance with these specifications will invalidate the design type approval or certification issued by
the emissions regulation authorities. The manufacturer does not accept any liability for violations of the
emission regulations.
The product must be operated over its entire life cycle according to the conditions defined as "Intended use"
(→ Page 7).
Emission certification applicable to engines with EPA Nonroad Tier 4 emission
certification in accordance with 40 CFR 1039
Extract from the standard:
Failing to follow these instructions when installing a certified engine in a piece of nonroad equipment violates
federal law (40 CFR 1068.105(b)), subject to fines or other penalties as described in the Clean Air Act.
Extract from the standard:
If you install the engine in a way that makes the engine's emission control information label hard to read
during normal engine maintenance, you must place a duplicate label on the equipment, as described in 40
CFR 1068.105.
When fitting the second label, the requirements of 40 CFR 1068.105(c) must be followed and observed. This
paragraph describes the process for requesting and fitting the label, the documentation obligations and stor-
age obligations for the required documents.
Replacing components with emission labels
On all MTU engines fitted with emission labels, these labels must remain on the engine throughout its opera-
tional life.
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Exception: Engines used exclusively in land-based, military applications other than by US government agen-
cies.
Please note the following when replacing components with emission labels:
• The relevant emission labels must be affixed to the spare part.
• Emission labels shall not be transferred from the replaced part to the spare part.
• The emission labels must be removed from the replaced part and destroyed.
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1.2 Correct use of all products
Correct use
The product is intended for use in accordance with its contractually-defined purpose as described in the rele-
vant technical documents only.
Intended use entails operation:
• Within the permissible operating parameters in accordance with the (→ Technical data)
• With fluids and lubricants approved by the manufacturer in accordance with the (→ Fluids and Lubricants
Specifications of the manufacturer)
• With preservation approved by the manufacturer in accordance with the (→ Preservation and Represerva-
tion Specifications of the manufacturer)
• With spare parts approved by the manufacturer in accordance with the (→ Spare Parts Catalog/MTU con-
tact/Service partner)
• In the original as-delivered configuration or in a configuration approved by the manufacturer in writing (al-
so applies to engine control/parameters)
• In compliance with all safety regulations and in adherence with all warning notices in this manual
• In compliance with the maintenance work and intervals specified in the (→ Maintenance Schedule)
throughout the useful life of the product
• In compliance with the maintenance and repair instructions contained in this manual, in particular with
regard to the specified tightening torques
• With the exclusive use of technical personnel trained in commissioning, operation, maintenance and re-
pair
The product must not be operated in explosive atmospheres unless the engine fulfills the conditions for such
use and approval has been granted.
Any other use, particularly misuse, is considered as being contrary to the intended purpose. Such improper
use increases the risk of injury and damage when working with the product. The manufacturer shall not be
held liable for any damage resulting from improper, non-intended use.
The specifications of the manufacturer will be amended or supplemented as necessary. Prior to operation,
make sure that the latest version is used. The latest version can be found on the websites:
• For drive systems: http://www.mtu-online.com
• For power generation: http://www.mtuonsiteenergy.com
Modifications or conversions
Unauthorized changes to the product represent a contravention of its intended use and compromise safety.
Changes or modifications shall only be considered to comply with the intended use when expressly author-
ized by the manufacturer. The manufacturer shall not be held liable for any damage resulting from unauthor-
ized changes or modifications.
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1.3 Personnel and organizational requirements
Organizational measures of the user/manufacturer
This manual must be issued to all personnel involved in operation, maintenance, repair, assembly, installa-
tion, or transportation.
Keep this manual handy in the vicinity of the product such that it is accessible to operating, maintenance,
repair, assembly, installation, and transport personnel at all times.
Personnel must receive instruction on product handling and repair based on this manual. In particular, per-
sonnel must have read and understood the safety requirements and warnings before starting work.
This is important in the case of personnel who only occasionally perform work on or around the product.
Such personnel must be instructed repeatedly.
Personnel requirements
All work on the product must be carried out by trained, instructed and qualified personnel only:
• Training at the Training Center of the manufacturer
• Qualified personnel from the areas mechanical engineering, plant construction, and electrical engineering
The operator must define the responsibilities of the personnel involved in operation, maintenance, repair, as-
sembly, installation, and transport in writing.
Personnel shall not report for duty under the influence of alcohol, drugs or strong medication.
Clothing and personal protective equipment
Always wear appropriate personal protective equipment, e.g. safety shoes, ear protectors, protective gloves,
goggles, breathing mask. Follow the instructions concerning personal protective equipment in the descrip-
tions of the individual activities.
Safe handling of Substances of Very High Concern pursuant to the REACH regulation (Registration, Evalua-
tion, Authorisation and restriction of CHemicals): We recommend wearing protective gloves at all times in
order to reduce risk when working.
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1.4 Initial start-up and operation – Safety regulations
Safety regulations for initial start-up
Install the product correctly and carry out acceptance in accordance with the manufacturer's specifications
before putting the product into service. All necessary approvals must be granted by the relevant authorities
and all requirements for initial startup must be fulfilled.
Whenever the product is subsequently taken into operation ensure that:
• All personnel is clear of the danger zone surrounding moving parts of the machine.
Electrically-actuated linkages may be set in motion when the Engine Control Unit (governor) is switched
on.
• All maintenance and repair work has been completed.
• All loose parts have been removed from rotating machine components.
• All safeguards are in place.
• All components must be properly grounded. Ground separately by means of a grounding stake as neces-
sary.
• No persons wearing pacemakers or any other technical body aids are present.
• The service room is adequately ventilated.
• In the first few hours of operation, the product emits gases as a result of smoldering e.g. lacquers or oil.
These gases may be hazardous to health. Always wear respiratory protection in the operating room during
this period.
• The exhaust system is leak-tight and that the gases are vented to atmosphere.
• The product must be free of any damage, this applies in particular to lines and cabling.
• Protect battery terminals, generator terminals or cables against accidental contact.
• Check that all connections have been correctly allocated e.g. +/- polarity, fuel line/reduction agent line,
supply/return.
Immediately after putting the product into operation, make sure that all control and display instruments as
well as the monitoring, signaling and alarm systems work properly.
Smoking is prohibited in the area of the product.
Safety regulations during operation
The operator must be familiar with the control and display elements.
The operator must be familiar with the consequences of any operations performed.
During operation, the display instruments and monitoring units must be permanently observed with regard to
present operating status, violation of limit values and warning or alarm messages.
Malfunctions and emergency stop
Practice emergency procedures, especially emergency stopping, at regular intervals.
Take the following steps if any system malfunctions are detected or signaled by the system:
• Inform supervisor(s) in charge.
• Analyze the message.
• Respond by taking any necessary emergency action, e.g. emergency stop.
After a safety shutdown, the engine must only be started after the cause of the shutdown has been eliminat-
ed.
Contact Service if the root cause of the malfunction cannot be clearly identified.
Operation
Do not remain in the operating room when the product is running unless absolutely necessary. Keep your
stay as short as possible.
Keep a safe distance away from the product if possible. Do not touch the product unless expressly instructed
to do so following a written procedure.
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Do not inhale the exhaust gases of the product.
The following requirements must be fulfilled before the product is started:
• Wear ear protectors.
• Mop up any leaked or spilled fluids and lubricants immediately or soak up with a suitable binding agent.
Operation of electrical equipment
When electrical equipment is in operation, certain components of these appliances are electrically live.
Follow the applicable operating and safety instructions when operating the devices and heed warnings at all
times.
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1.5 Safety regulations for startup and operation, specific
information for gaseous fuel or dual fuel supply applications
General safety regulations
Important information
The fuel supplied to the gas engine is exclusively fuel gas.
The fuel supply for dual fuel application is diesel with different shares of fuel gas.
Requirement for the user: Check the gas train every time the product is started.
The temperature of the gas during operation must not fall below 5 °C in any section.
Gas system, general requirements
The plant manufacturer/user shall establish the connection to the gas supply in accordance with the applica-
ble statutory requirements, e.g. DVGW, G490/I, G491/I, DIN EN 12186, NFPA37.
Gas supply shutoff: The plant manufacturer/user shall ensure that the gas shutoff device complies with local
regulations.
The pressure regulator shall be equipped with an approved safety shutoff valve and a safety exhaust valve to
handle the situation where the pressure at the outlet of the gas pressure regulator is too high. The gas must
be vented to a hazard-free zone (atmosphere).
The gas train shall be equipped with a temperature-monitored flame arrester if the gas supply system is con-
nected to a vessel or if oxygen-containing gases are used.
The gas shutoff valves are activated via two different paths from the control system, with one path assigned
to each of the gas shutoff valves.
The gas train shall feature minimum pressure monitoring.
Additional equipment may be necessary in the gas train, e.g. maximum pressure monitoring, if
• gas supply pressure exceeds 100 mbar
• gas volume flow exceeds 200 m³/h
• fuel efficiency exceeds 600 KW
Safety regulations for initial startup in gas mixture/dual fuel applications
Whenever the product is put into service, ensure that:
• Mobile application: The product shall only be used outdoors.
• Stationary application: The product shall only be used with adequate ventilation.
Gas system, requirements for gas operation
The plant manufacturer/user shall use tested gas trains for the fuel supply of the product and connection to
the gas supply network. The manufacturer shall be consulted on matters related to connection conditions
and dimensions.
Gas trains have the following components fitted in the flow direction:
• a manual shutoff valve
• a gas filter
• two gas shutoff valves
• a pressure regulating device
The gas train shall feature automatic leak monitoring.
The plant manufacturer/user shall ensure that the gas train is positioned directly in front of the engine, but
no more than 3 meters upstream of the engine interface. The interface is the flange of the gas flow controller
or the connection of the gas/air mixer of the engine.
Series 400: The gas train must be positioned directly before the engine but no more than 2 meters upstream
of the engine interface.
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Freedom of movement of the flexible line connection must be guaranteed in accordance with the installation
instructions.
Gas system, requirements for dual fuel applications
Gas trains feature the following components in the direction of flow (plant manufacturer/user scope of sup-
ply):
• a manual shutoff valve
• a gas filter
Gas trains feature the following components in the direction of flow (MTU scope of supply):
• two gas shutoff valves (automatic)
• a pressure regulating device
• a manual shutoff valve
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1.6 Assembly, maintenance, and repair work – Safety regulations
Safety regulations for work prior to assembly, maintenance, and repair
Have assembly, maintenance, or repair work carried out by qualified and authorized personnel only.
Allow the product to cool down to less than 50 °C (risk of explosion from oil vapors, fluids and lubricants,
risk of burning).
Relieve pressure in fluid and lubricant systems and compressed-air lines which are to be opened. Use suita-
ble containers of adequate capacity to catch fluids and lubricants.
Release residual pressure before removing or replacing a component in the supply line. To depressurize pres-
surized lines, shut off the lines first, then release the residual pressure.
Work must only be carried out on lines when they are free of fluids and lubricants.
When changing the oil or working on the fuel system, ensure that the service room is adequately ventilated.
Never carry out assembly, maintenance, or repair work with the product in operation, unless:
• It is expressly permitted to do so following a written procedure.
Lock-out the product to preclude undesired starting, e.g.
• Start interlock
• Key switch
• Close supply line for hydraulic starting.
Attach “Do not operate” sign in the operating area or to control equipment.
Disconnect the battery cables or actuate the battery isolating switch, if fitted. Lock circuit breakers.
Before starting work on CaPoS, if used:
• Switch off the charging system (DC/DC converter).
• Discharge the UltraCap modules using the appropriate discharger.
• Short-circuit the UltraCap modules with a suitable wire jumper.
Close the main valve on the compressed-air system and vent the compressed-air line when air starters are
fitted.
Before working on the exhaust gas aftertreatment system, close the shutoff valve on the reducing agent
tank. Note that the reducing agent pumps continue to run for a certain period when the engine is stopped.
Disconnect the control equipment from the product.
Use the recommended special tools or suitable equivalents when instructed to do so.
Safety regulations when performing assembly, maintenance, and repair work
Special tools and lifting equipment
Use only proper and calibrated tools. Observe the specified tightening torques during assembly or disassem-
bly.
Setting down, lifting and climbing
Carry out work only on assemblies or plants which are properly secured.
Use appropriate lifting equipment for all components. Use all specified attachment points and observe the
center of gravity.
Never work on engines or components when they are held in place by lifting equipment.
Make sure components or assemblies are placed on stable surfaces. Adopt suitable measures to prevent
components/tools from falling down.
Assume a safe standing position when performing assembly work.
Never use the product as a climbing aid.
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When working high on the equipment, always use suitable ladders and work platforms. Special instructions
for outdoor areas: There must be no risk of slipping e.g. due to icing.
Removing, installing and cleanliness
Pay particular attention to cleanliness at all times.
Completely wipe up escaped fluids and lubricants due to the risk of slipping.
Take special care when removing ventilation or plug screws from the product.
Ensure that O-rings are not installed in a slanted/twisted condition.
Carry out appropriate cleaning procedures to clean and inspect components requiring special cleanness
(e.g. components carrying oil, fuel, or air).
Note cooling time for components which are heated for installation or removal (risk of burning).
Ensure that all mounts and dampers are installed correctly.
Remove any accumulation of condensate after assembling chilled components. Coat the components with a
suitable corrosion inhibitor as necessary.
Lines
Ensure that lines for all fluids and lubricants and their connections are clean.
Always seal connections with caps or covers if a line is removed or opened.
Fit new seals when re-installing lines.
Never bend lines and avoid damaging lines, particularly the fuel lines.
Ensure that all fuel injection and pressurized oil lines are installed with enough clearance to prevent contact
with other components. Do not place fuel or oil lines near hot components.
Miscellaneous
Sufficient ventilation must be guaranteed during the work.
Wear a breathing mask offering protection against soot, dust, and mineral fibers (filter class P3) when work-
ing on exhaust components. Clean the work area with a dust extraction machine of class H. Wear protective
gloves and goggles for protection against acidic condensate.
Do not touch elastomeric seals (e.g. Viton sealing rings) with your bare hands if they have a carbonized or
resinous appearance.
Elastomer components (e.g. engine mounts, damping elements, couplings and V-belts) must not be painted.
Only install them after painting the engine or mask them prior to painting.
The following applies to starters with copper-beryllium alloy pinions:
• Wear a respirator mask (filter class P3). Do not blow out the interior of the flywheel housing or the starter
with compressed air. Clean the flywheel housing inside with a class H dust extraction device.
• Observe the safety data sheet.
Safety regulations after performing assembly, maintenance, and repair work
Before barring the engine, make sure no one is in the danger zone of the engine.
Check that all access ports/apertures which have been opened to facilitate working are closed again.
Check that all safeguards have been installed and that all tools and loose parts have been removed (especial-
ly the barring tool).
Ensure that no unattached parts have been left in/on the product (e.g. including rags and cable straps).
Ensure that the grounding system is properly connected.
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Welding work
Welding operations on the product or mounted units are not permitted. Cover the product when welding in
its vicinity.
Before starting welding work:
• Switch off the power supply master switch.
• Disconnect the battery cables or actuate the battery isolating switch.
• Separate the electrical ground of electronic equipment from the ground of the unit.
No other assembly, maintenance, or repair work must be carried out in the vicinity of the product while weld-
ing is in progress. There is a risk of explosion or fire due to oil vapors or highly flammable fluids and lubri-
cants.
Do not use product as ground terminal.
Never position the welding power supply cable adjacent to, or crossing wiring harnesses of the product. The
welding current can induce interfering voltages in the wiring harnesses which may damage the electrical sys-
tem.
Remove components (e.g. exhaust pipe) from the product before performing necessary welding work.
Hydraulic installation and removal
Check the function and safe operating condition of tools and fixtures to be used. Use only the specified devi-
ces for hydraulic removal/installation procedures.
Observe the max. permissible push-on pressure specified for the equipment.
Do not attempt to bend or apply force to lines which are under pressure.
Before starting work, pay attention to the following:
• Vent the installation/removal jig, the pumps and the pipework at the relevant designated points.
• For hydraulic installation, screw on the jig with the piston retracted.
• For hydraulic removal, screw on the jig with the piston extended.
For a hydraulic installation/removal jig with central expansion pressure supply, screw spindle into shaft end
until correct sealing is established.
During hydraulic installation and removal of components, ensure that nobody is standing in the immediate
vicinity of the component to be installed/removed.
Working with batteries
Observe the safety instructions of the manufacturer when working on batteries.
Gases released from the battery are explosive. Avoid sparks and naked flames.
Do not allow battery acids to come into contact with skin or clothing.
Wear protective clothing, goggles and protective gloves.
Do not place objects on the battery.
Before connecting the cable to the battery, check the battery polarity. The battery may explode and spray
acid if the battery terminals are connected incorrectly.
Working on electrical and electronic assemblies
Always obtain the permission of the person in charge before commencing assembly, maintenance, and repair
work or switching off any part of the electronic system required to do so.
De-energize the relevant areas prior to working on assemblies.
ESD (Electrostatic Discharge): Work on components which could be damaged by electrostatic discharge
must always be carried out with appropriate equipment. Appropriate equipment is e.g. electrically conductive
work surfaces or antistatic wristbands.
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Do not damage wiring during removal work. When reconnecting, ensure that cabling cannot be damaged dur-
ing operation by:
• Contact with sharp edges
• Chafing on components
• Contact with hot surfaces.
Do not secure cables on lines carrying fluids.
Do not use cable ties to secure lines.
Always use connector pliers to tighten union nuts on connectors.
Subject the device as well as the product to functional testing on completion of all repair work. The emergen-
cy stop function must be tested in particular. The functional check of the emergency stop, during which the
voltage supply of the ECU is switched off, must only be carried out when the product is cold.
Store spare parts properly prior to replacement, i.e. protect them against moisture in particular. Package
faulty electronic components or assemblies properly before dispatching for repair:
• Moisture-proof
• Shock-proof
• Wrapped in antistatic foil (as necessary)
Working with laser equipment
Work with laser devices shall be carried out by trained and qualified personnel only. Follow the safety in-
structions in the manufacturer's user manual when working with laser equipment.
Wear special laser safety glasses when working with laser equipment (danger of concentrated radiation).
Laser equipment must be fitted with the protective devices necessary for safe operation according to type
and application.
Measuring component dimensions
Workpieces, components and measuring equipment lie in the specified tolerance range at a reference tem-
perature of 20 °C.
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1.7 Safety regulations for assembly, maintenance and servicing
work, specific information for gaseous fuel and dual fuel
supply or applications
Safety regulations for work prior to assembly, maintenance, and repair
Assembly work shall be performed by specially trained/qualified and authorized personnel only.
The gas supply shall be connected by trained/qualified and authorized personnel only.
Work on the gas-bearing parts of the product shall be performed by specially trained/qualified and author-
ized personnel only.
Ensure adequate – possibly increased – ventilation before opening the gas system.
Shut down the gas supply to the product by closing the manual shutoff valve.
Lock-out / tag-out the drive unit to prevent starting.
Additional safety regulations for marine application engines, engines with
multipoint gas injection
Depressurize gas system and flush with nitrogen.
If available, depressurize the nitrogen overpressure leak monitoring system.
Prior to opening the crankcase or oil separator, flush out the crankcase.
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1.8 Fire and environmental protection, fluids and lubricants
Fire prevention and fire
Fire, naked light and smoking are prohibited.
In case of a fire, stop the fuel supply if this is possible without endangering personnel.
The product has hot surfaces that can ignite combustible gases and other substances in the immediate area.
The operating company must install and operate the product a safe distance away from danger sources and
observe any relevant safety regulations or recommendations. Products that comply with the SOLAS Conven-
tion do not constitute such as danger.
After working with combustible fluids and lubricants (e.g. cleaning agents), ensure the area is well ventilated.
The resultant steam/air mixture must be sufficiently diluted to prevent a potentially explosive atmosphere.
Eliminate leaks of fluids and lubricants immediately. Fluids and lubricants on hot components can cause
fires, so keep the product clean at all times. Do not leave rags saturated with fluids and lubricants on the
product. Do not store combustible materials near the product.
Before welding, clean the area to be welded with a nonflammable fluid. Do not carry out welding work on
pipes and components carrying oil or fuel.
When starting the engine with an external power source, connect the ground lead last and remove it first. To
avoid sparks in the vicinity of the battery, connect the ground cable from the external power source to the
ground cable of the engine or to the ground terminal of the starter.
Ensure that suitable extinguishing agents (fire extinguishers) are always available and that staff are familiar
with their correct handling.
A fire can result in the creation of toxic substances. Always wear protective gloves when handling compo-
nents and wear additional personal protective equipment is necessary.
Noise
Wear ear protectors in workplaces with a sound pressure level in excess of 85 dB (A).
Noise can lead to an increased risk of accidents if acoustic signals, warning shouts or sounds indicating dan-
ger are compromised.
Environmental protection and disposal
Dispose of used fluids, lubricants and components in accordance with local regulations.
Within the EU, batteries can be returned free of charge to the manufacturer where they will be properly recy-
cled.
Fluids and lubricants/auxiliary materials (process materials)
Process materials can also be or contain hazardous or toxic substances. When using process materials and
other chemical substances, observe the associated safety data sheet. The safety data sheet may be obtained
from the relevant manufacturer or from MTU.
Only process materials approved by the manufacturer in accordance with the Fluids and Lubricants Specifi-
cations must be used. The most recent respective version must be requested from the manufacturer.
Contamination of process materials with reducing agent (e.g. AdBlue®, DEF): Store process materials in sep-
arate containers and their own drip trays. Even extremely small amounts of reducing agent contamination
can result in malfunctions in sensors and other components.
Used oil contains combustion residues that are harmful to health.
When handling used oil, protective gloves must be used.
Wash relevant areas after contact with used oil.
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Registration, evaluation, approval and restriction of chemicals (REACH
ordinance)
Particularly hazardous substances used with our products are named in a list:
www.mtu-online.com/mtu/technische-info → SVHC as per REACH in MTU products
Compressed air
• Unauthorized use of compressed air, e.g. forcing flammable liquids (hazard class AI, AII and B) out of con-
tainers, risks causing an explosion.
• Wear goggles when blowing dirt off workpieces or blowing away chips.
• Blowing compressed air into thin-walled containers (e.g. containers made of sheet metal, plastic or glass)
for drying purposes or to check for leaks risks bursting them.
• Pay special attention to the pressure in the compressed air system or pressure vessel.
• Assemblies or products which are to be connected must be designed to withstand this pressure. Install
pressure-reducing or safety valves set to the admissible pressure if this is not the case.
• Hose couplings and connections must be securely attached.
• Provide the snout of the air nozzle with a protective disk (e.g. rubber disk).
• Release residual pressure before removing a compressed air device from the supply line. To depressurize
compressed-air lines, shut off the lines first, then release the residual pressure.
• Carry out a leak test in the specified manner.
Painting
• Observe the relevant safety data sheet for all materials.
• When carrying out painting work outside the spray stands provided with fume extraction systems, ensure
that the area is well ventilated. Make sure that neighboring work areas are not adversely affected.
• Avoid open flames in the surrounding area.
• No smoking.
• Observe fire-prevention regulations.
• Always wear a mask providing protection against paint and solvent vapors.
Liquid nitrogen
• Observe the relevant safety data sheet for all materials.
• Work with liquid nitrogen may be carried out only by qualified personnel.
• Store liquid nitrogen only in small quantities and always in specified containers without fixed covers.
• Avoid body contact (eyes, hands).
• Wear protective clothing, protective gloves, closed shoes and safety goggles.
• Make sure that the working area is well ventilated.
• Avoid knocking or jolting the containers, valves and fittings or workpieces in any way.
Acids/alkalines/reducing agents (e.g. AdBlue®, DEF)
• Observe the relevant safety data sheet for all materials.
• When working with acids and alkaline solutions, wear goggles or face mask, gloves and protective cloth-
ing.
• Do not inhale vapors.
• If reducing agent is swallowed, rinse out mouth and drink plenty of water.
• Remove any wet clothing immediately.
• After skin contact, wash affected body areas with plenty of water.
• Rinse eyes immediately with eyedrops or clean mains water. Consult a doctor as soon as possible.
Contamination of reducing agent with other process materials: Store reducing agent in separate contain-
ers and use separate drip trays. Even extremely slight contamination can lead to malfunctions in the ex-
haust aftertreatment system.
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1.9 Fire prevention and environmental protection, fluids and
lubricants, auxiliary materials, specific information for
gaseous fuel supply in gaseous-fuel or dual-fuel applications
General notes on gas
Observe the information contained in the safety data sheet of the gas used. Consult with gas supplier/utility.
The gas used must comply with the (→ Fluids and Lubricants Specifications of the manufacturer).
Risk of poisoning due to hazardous impurities. The ingestion of even small quantities of hydrogen sulfide or
ammonia can be fatal.
Inhaling certain gases can be dangerous to life depending on concentration. Furthermore some gases can no
longer be detected by smell in higher concentrations.
Conduct in case of escaping gases:
• If safe to do so: Shut off main gas supply.
• If safe to do so: Execute an emergency stop.
• Cordon off danger zone.
• Ensure sufficient ventilation.
• Do not enter the hazard zone until it has been established (via measurement of the gas concentration with
a suitable gas detector) that the atmosphere is no longer hazardous.
Check all gas conveying lines for tightness prior to initial operation and at regular intervals during operation.
Natural gas (pipeline quality or treated Compressed Natural Gas (CNG) or
Liquified Natural Gas (LNG))
Highly flammable gas; forms an explosive mixture with air/oxygen.
Weakly narcotic gas; risk of suffocation at high concentrations.
Biogenic gases from fermentation processes
Highly flammable gas; forms an explosive mixture with air/oxygen.
Risk of poisoning due to hydrogen sulfide from the fermentation process. The ingestion of even small quanti-
ties of hydrogen sulfide can be fatal.
Weakly narcotic gas; risk of suffocation at high concentrations.
Biogenic gases have a tendency to segregate. In low-lying areas of the plant, carbon dioxide enrichment is
possible.
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