Om 904

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Bild in der Größe

215x70 mm einfügen

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Mercedes-Benz engine.

Please get to know your new Merced es-Benz engine first. Make sure you read the Operating Instructions in particular before using the en gine for the first time. In this way you can ensure successful and safe use. At the same time you will avo id endan -gering yourself and others when operating the engine.

Items of special equipment are marked with an asterisk *. The equipment in your Mercedes-Benz engine may vary, depend-ing on the version. Mercedes-Benz is con-stantly upd ating its engines to the state of

claims on the data, illustrations or d escrip-tions in these Operating Instrucescrip-tions. Fo r furth er information co ntact a Mercedes-Benz Service Centre. The Operating Instructions and Mainte-nance Booklet belong with the engine. You should therefore always keep them with the engine and pass them on to the new owner if you sell it.

The technical documentation team at DaimlerChrysler AG wishes you every suc-cess.

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Operating safety . . . . . . . . 8 Correct use. . . . . . . 9 2 At a glance OM 904 LA /OM 924 LA . . . 12 OM 906 LA /OM 926 LA . . . 16 Location of sensors . . . . . 20 Engine plate . . . . . . 22 3 Before commissioning General . . . . . . . 24 Type designation . . . . . 24

Engine data card. . . . . . 24

Description of the engine . . . 25

Flame-start system* . . . 26

Grid heater* . . . . . . 27

Exhaust brake /constantly-open throttle valve*. . . . . . 28

Telligent® engine system . . . 29

4 Safety Safety precautions. . . 36

Personnel qualifications . . . . . . . 37

Conversion parts and modifications . . . 38

Safety /emergency running programs . . . . . . . . . 39

Genuine M ercedes-Benz parts . . . 40

5 Operation Commissioning. . . 42

Preparation . . . 42

Starting the engine for the first time . . . . . . . . . 44

Starting the engine . . . 47

Monitoring engine operation . . . 49

Charge current . . . 49

Telligent® engine system . . . . . 50

Flame-start system* . . . 50

Grid heater* . . . 51

Stopping the engine. . . 52

Winter operation . . . 53

Cleaning/protective trea tment . . . . 55

Cleaning the engine . . . 55

Cleaning the cooling system . . . 56

Protective treatment. . . 58 Service products . . . 59 Diesel fuels . . . . . . . 60 Engine oils . . . . . . . 62 Coolant . . . . . . . . 63 6 Maintenance Maintenance instructions . . . 66

Overview of work plans . . . 67

Main ten ance service . . . 67

Ad ditional work . . . 67

Ad ditional work during every 3rd maintenance service . . . 67

Work plans . . . . . . . 68

Engine: Checking for leaks and general condition . . . 68

Lines and hoses on the engine: Checking for leaks and general cond ition . . . . . . . 68

Engine: Oil change and filter replacement . . . . . . . 69

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Fuel prefilter: Cleaning the filter element. . . 77 Fuel prefilter with heated water separator*: Replacing the filter element. . . 78 Replacing the fuel filter element. . . 80 Intake pipe between air cleaner and en gine: Checking for leaks and general condition . . . 82 Poly-V-belt: Checking

the con dition. . . . . . 83 Engine brake: Checking the

condition and setting . . . 88 Engine cooling system: Checking and correcting the fluid level and the antifreeze /corrosion

in hibitor . . . 90 Cooling and heatin g system:

Checking for leaks and general condition. . . 91 Renewing coo lan t. . . . . . 94

7 Practical advice Malfunctions, ca uses a nd solutions . . . . . . . . . 98 Jump-starting . . . 106 8 Technical data Engine data . . . 108 Test values and adjustment

values . . . . . . . . . . 112 Tightening torques . . . 113

9 Glossary and index

Technical terms . . . 115 Index . . . . . . . . . . 117

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The aim of these Operating Instructions

1 Introduction

The aim of these Operating Instructions

These Operating Instructions are intended to assist you in all situatio ns with your new engine. Each section has a list of contents to help yo u find the information you re-quire quickly:

2 At a glance

This section gives you an overview o f the layout of important components in the en-gine.

3 Before commissioning

This contains the basic information you re-quire for initial operation. If this is your first Mercedes-Benz engine, you should read this section first.

4 Safety

This section contains important aspects with regard to safety when handling Mercedes-Benz 900 series engines.

5 Operation

Here you will find all the information you will need when you are operating the en-gine.

6 Maintenance

This is where you will find more detailed in -formation abo ut maintenance work.

7 Practical advice

Here you will find practical help for possi-ble propossi-blems.

8 Technical data

All the important technical data for the en -gine is listed here.

9 Glossary and index

The glossary of technical terms explains the most important technical concep ts.

The engine documentation comprises the following:

these Operating Instructions the Maintenance Booklet

Specifications for Service Products You may receive additio nal supp lements depen ding on the equipment.

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Symbols

1

Symbols

You will find the following symbols used in these Operating Instructions:

* This asterisk indicates special equipment. Since not all models have the same standard equip-ment, the layout of your engine may d iffer from certain descriptions and illustrations.

This symbol means that you have to do so mething.

A number of these symbols one after the other indicates a sequence of ac-tion s.

page This symbol indicates the page on which you will find further in-formation on the subject. This continuation symbol indi-cates an interrupted sequence of actions that will be continued on the next p age.

-> This symbol in the glossary of technical terms means that the term fo llowing the arrow is also explained.

Wa rning

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A warning draws your attention to possible risks of accident and injury to yourself and others.

You should therefore always read and ob-serve all warning notices.

Environmental note

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An environmental note gives you tips on the protection of the environment.

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This note draws your attention to possi-ble hazards to your engine.

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This tip contains advice or further infor-mation you may find useful.

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Introduction

Protection of the environment

1

Protection of the environment

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DaimlerChrysler's declared policy is one of integrated environmental protection. This policy starts at the root causes and enc om-passes in its management decisions all the consequences for the environment which could arise from production processes or the products themselves.

The objectives are for the natural resourc es which form the basis of our existenc e on this planet to be used sparingly and in a manner which takes the requirements of both nature and humanity into ac count.

Operate the engine in an environmentally-responsible manner, and you will help to protect the environment.

Fuel consumption and engine wear depend on the operating conditions.

Therefore you should:

not warm up the engine at idle switch off the engine during waiting

pe-riods imposed by operations monitor fuel consumption

carry out the specified maintenance work regularly

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Operating safety

1

The operating safety of an engine firstly de-pends on its proper installation into the comp lete system (e.g. vehicle, machine, etc.). Secondly, as operator or service per-so nnel, you alper-so have a direct in fluence on the safe operation of the engine.

Some of the requiremen ts for operating the en gine safely can be achieved b y ad-hering to the specified maintenance inter-vals and en suring that the required maintenance work is carried o ut correctly. However, safe engine operation also de-pends on correct servicing, such as check-ing the engine oil level at regular intervals.

Risk of accident

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Improper operation of the engine, e.g. ex-ceeding the permitted maximum engine speed in overrun mode or operating the en-gine with too little oil, can cause enen-gine damage. Engine damage can lead to an in-crease in the risk of accident.

Therefore, observe the notes on operating the engine in these Operating Instructions.

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Faulty maintenance work or failure to carry out maintenanc e work, e.g. not changing the oil filter or not observing the correct mainte-nance interval, can c ause engine damage. Engine damage c an lead to an increase in the risk of accident.

Therefore, observe the notes on engine maintenance in these Operating Instruc-tions.

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Introduction

1

The engine is only designed for installation

in accordance with the specifications de-termined in the contract.

The manufacturer of the end product is personally respo nsible for the complete system of the end product, and in particu-lar for the correct installation and compat-ibility of this engine with the complete system.

The engine must not be modified. DaimlerChrysler accepts no respon sibility for damage caused as the result of modifi-cations.

Correct use of the engine includes ad her-ing to these Op erather-ing In structions, adher-ing to the maintenance intervals and performing maintenance wo rk correctly in accordance with these Operating Instruc-tions.

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Work incorrectly c arried out on electronic components and its software could impair the functioning of these components. Sinc e the elec tronic systems are networked, this might also affect systems that have not been modified.

Always have work on or modifications to elec tronic components carried out at a qual-ified specialist workshop which has the nec-essary specialist knowledge and tools to carry out the work required.

Mercedes-Benz rec ommends that you use a Mercedes-Benz Service Centre for this pur-pose.

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2 At a glance

OM 904 LA /OM 924 LA OM 906 LA /OM 926 LA Location of sensors Engine plate

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OM 904 LA/OM 924 LA

2

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At a glance

OM 904 LA/OM 924 LA

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1 Fan

2 Poly-V-belt tensioning pulley 3 Coolant pump

4 Charge pressure pipe (with flame-start system*) from interco oler

5 Charge pressure pipe to intercooler 6 Crankcase ventilation system 7 Heating delivery line* coolant line 8 Oil filler neck

9 Fuel filter a Fuel prefilter b Dipstick

c Air compressor (with power-steering pump*)

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OM 904 LA/OM 924 LA

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At a glance

OM 904 LA/OM 924 LA

2

1 Flywheel housing

2 Charge-air housing 3 Oil filler neck

4 Charge pressure pipe to intercooler 5 Charge pressure pipe (with flame-start

system*) from interco oler 6 Exhaust manifold

7 Oil filter

8 Exhaust gas turbocharger 9 Alternator

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OM 906 LA/OM 926 LA

2

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At a glance

OM 906 LA/OM 926 LA

2

1 Fan

2 Poly-V-belt tensioning pulley 3 Coolant pump

4 Heating forward line* coolant line 5 Charge pressure pipe from intercooler 6 Oil filter

7 Charge pressure pipe to intercooler 8 Oil filler neck

9 Charge-air housing a Cylinder head cover b Fuel filter

c Fuel prefilter d Engine control unit e Air compressor* f Dipstick

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OM 906 LA/OM 926 LA

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At a glance

OM 906 LA/OM 926 LA

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1 Starter motor

2 Flywheel housing 3 Exhaust gas turbocharger 4 Exhaust manifold 5 Charge-air housing 6 Cylinder head cover 7 Oil filler neck

8 Charge pressure pipe to intercooler 9 Charge pressure pipe from intercooler a Crankcase ventilation system

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Location of sensors

2

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At a glance

2

1 Oil pressure sensor

2 Coolant temperature sensor 3 Fuel temperature sensor

4 TDC sensor (on the camshaft sprocket) 5 Crankshaft position sensor (on the

fly-wheel)

6 Combined charge-air /charge-air pres-sure sensor

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Engine plate

2

Engine plate Location

The engine plate is located on the right-hand side of the engine at the rear under-neath the exhaust manifold (arrow).

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3 Before commissioning

General Transport and installation

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General

3

General

The en gine d ata card (DIN A4 sheet) forms an integral part of the documents belong-ing to the engine and should always be kept with the Maintenan ce Booklet. It con-tains details about the engine's construc-tion , in cluding special equip ment features. The engine data card must be produced for the procurement of genuine parts.

Engine data card Type designation

OM 9XX L A

OM Oil engine (diesel

en-gine)

9XX Engine type

L Intercooler A Exhaust gas

turbo-charger

Engine da ta card

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The engine data card describes the scope of d elivery from the factory from which the engine was shipped; later changes to the scope of delivery are not included on the data card.

Always keep the engine data card with the Maintenance Booklet.

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Before commissioning

General

3

The OM 904 LA/ OM 924 LA (4-cylinder)

and OM 906 LA /OM 926 LA (6-cylind er) engines are water-cooled four-stroke d ie-sel injection engines.

The cylinders are arranged in-line and have separate fuel-injection pumps (unit pump s) with a short high-pressure fuel-injection line to the multi-hole nozzle locat-ed centrally in relation to the comb ustion chamber. The unit pumps are mounted di-rectly on the crankcase. They are driven by the camshaft roller tappets. Each cylinder has two inlet valves and one exhaust valve. The engin es are equipped with an exhaust gas turbocharger (sometimes with charge-pressure limiting) and intercooler as stand-ard. The engine can be optio nally equipped with an engine brake* (throttle and con-stantly-open thro ttle valves).

Thanks to its fully electronic control

sys-The control system comprises an en gine-resident control module, an engine control (MR) and an application-related vehicle control unit (FR) o r an adaptation module (ADM), all interconnected via the Control-ler Area Network (CAN).

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General

3

The flame-start system is a cold-start aid for starting at low outside temperatures. It reduces the white smoke emission after the en gine is started. In ad dition, it reduc-es the strain on the starter motor and bat-teries by shortening the startup time. Fuel can be ignited by a flame glow plug tegrated in the charge-air pipe from the in-tercooler. The fuel is supplied to the flame glow plug via a solenoid valve with a dosing jet.

Flame-start system

The flame-start system is primed after a preglow time (maximum 20 seconds) which is dependent on the outside temper-ature. After this time the flame-start sys-tem indicator lamp goes out.

Once the engine has started, the flame-start system is supplied with fuel by the en-gine's fuel delivery pump.

Flame-start system indicator lamp

The flame-start system is only operational if the engine is started within 30 seconds of the flame-start system indicator lamp going out.

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Before commissioning

General

3

To increase braking power, the engine can be equipped with an engine brake valve on the exhaust gas turb ocharger in conjunc-tion with constan tly-open throttle valves on the cylinders.

While the exhaust gas back pressure from the engine brake valve is used to increase the braking power, the constantly-open throttle valves cause a pressure reduction in the working cycle (3rd cycle), while com-pression (2nd cycle) is practically unaffect-ed.

The constantly-open throttle valves are small valves in the cylind er head and locat-ed on the side opposite the exhaust valve. When open, they form a connection from the combustion chamber to the exhaust port.

Constantly-open throttle valves on a 4-cylin-der engine

When the en gine brake* is applied , the constantly-op en throttle valves are pneu-matically pressurised on the 4-cylinder en-gine and hydraulically pressurised on the 6-cylind er engine. This opens the valves. At the same time, the engine b rake valve on the exhaust gas turbocharger is closed. The constantly-open throttle valves are not controlled at lower engine speeds (900/ 1,300 rpm) or at temperatures belo w 40 °C. When the power unit is being used, these limitations must be taken into ac-count under braking conditions. Exhaust brake/ constantly-open

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Before commissioning

General

3

The engine brake* is controlled b y the

drive co ntrol un it ( page 31) or the ADM. The engine brake* is always disab led be-low 900 rpm to prevent the engine from stalling. The engine brake* is also auto-matically deactivated if the position sensor is triggered (e.g. if the accelerator pedal is depressed).

The engine has a fully electro nic control system, which, in addition to the engine and related sensors, also comprises: an engine control unit, and

a drive control unit and/ or other vehi-cle-specific control units or ADM. Both are interconnected via a CAN (Con-troller Area Network) line which exchan ges all the necessary d ata / information. The engine control monitors itself as well as the engine. A safety and emergency run -ning program is selected automatically de-pending on the malfunctions /failures occurring ( page 39).

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In emergency running mode (constant engine sp eed), the engin e brake* can only be activated in o verrun mode at a higher engine speed. The engine brake* is automatically d isabled again once the constant engine speed has been reached .

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General

3

Engine control unit (engine-resident) The engine control unit is located on the left-hand side of the engine.

Engine control unit

The engine control unit pro cesses data coming from the drive control unit or the ADM, such as the position of the setpoin t value sensor (accelerator pedal), the en-gine brake* or enen-gine start/ sto p, etc.

This data is evaluated along with data from the sensors on the engine, such as those for:

charge-air pressure and temperature coolant temperature

fuel temperature oil pressure

These parameters are compared with the characteristic maps and graphs stored in the engine contro l unit.

Start, duration and amount of injection are calculated from the graphs and the unit pumps are controlled accordingly via the

solenoid valves. Control unit type plate

1 Data record 2 Certification no. 3 Engine plate 4 Equipment code

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All the information on the control unit type p late is required to obtain a re-placement engine control unit. The type plate is located on the engin e control unit in the upper right-hand cor-ner.

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Before commissioning

General

3

FR (drive control) unit or ADM

(appliance-resident)

The engine can be adapted to meet the various application-sp ecific requirements by means of the FR (drive control) unit or adaptation module (ADM).

Drive control unit

The FR (drive co ntrol) unit or the ADM unit stores data for specific applications, such as idling speed, maximum working speed and speed limitation.

The FR (drive control) unit and the ADM re-ceive data from the

operator (position of setpoint value sensor, engine start/ stop)

engine brake switch*

other systems (e.g. traction control) engine control unit (e.g. oil pressure

and coolant temperature)

From this data, the instructions for the MR (engine control) unit are computed and transmitted to it via the CAN line.

The drive control unit and the ADM control various d isplays, e.g. the electronics warn -ing lamp, the engine brake* and the con-stantly-open throttle valves*.

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General

3

If the Telligent® engine system detects a fault, this is stored as a fault cod e in the control units and can be read using the ap-prop riate diagnostic equipment (STAR DIAGNOSIS o r Minid iag 2).

In addition, the electronics warning lamp is switched on.

Diagnostic socket

Organisationa l measures

The Operating Instructions and Mainte-nance Booklet must b e given to the per-sonnel resp onsible for operating the engine or carrying out work on the en gine, and should be kept in an easily accessible place where the engine is used.

Personnel must be instructed in how to work on the engine using these Operating Instructions. In particular, the safety notes must be explained. This is especially im-portant for personnel who only work on the engine occasionally.

In addition to these Op erating Instructions, the country-specific legal and all other binding regulations for accident prevention and protection of the environmen t must be observed.

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The DaimlerChrysler diagnostic testers can be connected to the equipment-resident, 14-pin diagnostic socket. Both the malfunction memory and the stored engine data can be read with

this equip ment. _{Risk of accident and injury}

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Before operating the engine, please read these Operating Instruc tions and other rele-vant doc umentation, such as the operating instructions for the vehic le or the machine the engine is installed in.

You c ould otherwise fail to recognise dan-gers and could injure yourself or others.

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Before commissioning

Transport and installation

3

Transport

Lifting point, flywheel end Lifting point, timing end

Risk of accident and injury

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The engine c an tear loose and cause injury to persons by overturning or falling. Only lift the engine by the appropriate

lifting points on the engine.

Only use transport equipment which has been approved for use by

DaimlerChrysler.

Only lift and transport the engine in its installation position.

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3

Installation

The engine is only designed for installation in accordance with the sp ecifications de-termined in the contract.

The manufacturer of the en d prod uct is personally responsible for the co mplete system of the end product, and in particu-lar for the correct installation and comp at-ibility of this en gine with the complete system.

Observe the "Correct use" ( page 9) and "Conversion parts and modifications to the engine" ( page 38) sections.

These Operating Instructions contain in-stallation d ata in the "Technical data" sec-tion .

Should you have any questions, please contact a Mercedes-Benz Service Cen tre.

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The engine is filled with engine oil at the factory.

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4 Safety

Safety precautions Personnel qualifications Conversion parts and modifications to the engine Safety/emergency running program Genuine Mercedes-Benz parts

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Safety precautions

4

Safety precautions

Make sure that the following safety pre-cautions are observed to prevent injury to persons as well as damage to the engine, comp onents and cable harness.

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Only start the engine with securely connected batteries.

Do not disconnect the batteries with the engine running.

Only start the engine with the rota-tional speed sensor connected. Do not use a rapid charger to start

the engine.

Only perform jump-starting with separate batteries.

Please note that the battery termi-nals must be removed fo r rapid bat-tery charging. Observe the rapid charger op erating instructions.

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Note that for electric welding work, the batteries must be disconnected and both co nnector leads ("+" and "–") securely connected to each other.

The control unit connectors must only be removed or inserted when the electrical system has been switched off.

Incorrect polarity of the control unit supply voltage (e.g. through incor-rect battery polarity) can cause ir-reparable damage to the control units.

Tighten the connections to the fuel-injection system to the specified tightening torque.

The control units must be removed if temperatures over 80 °C (e.g. in the drying o ven) are expected.

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Only use suitable test leads (e.g. DaimlerChrysler connection set) for measuring connectors.

Telephones and two-way radios which are n ot connected to an ex-ternal aerial can cause malfunc-tion s to the vehicle's electronics and could therefore end anger the engine's operating safety.

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Safety

Personnel qualifications

4

Personnel qualifications

Engines may only be operated, maintained and repaired by trained personn el instruct-ed and authorisinstruct-ed by the operator. Responsibility for operatio n, maintenance and rep airs must be determined by the op -erator.

The legal minimum age for carrying out th e work listed above must be observed.

Risk of accident and injury

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Maintenance and repair work to the engine incorrectly performed c an cause engine damage and may lead to personal injury as a consequence.

Maintenance and repair work on the engine may only be carried out by personnel who have undergone the appropriate training. Always have work on or modific ations to the engine carried out at a qualified spec ialist workshop which has the nec essary special-ist knowledge and tools to carry out the work required.

Mercedes-Benz rec ommends that you use a Mercedes-Benz Service Centre for this pur-pose.

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Conversion parts and modifications

4

Conversion parts and modifications

The warranty does not cover damage aris-ing from tamp eraris-ing with the engine.

Risk of a ccident

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Tampering with the engine with the inten-tion to produce modificainten-tions to it c an im-pair both its correct operation and its safety, leading to personal injury as a consequenc e. Always have work on or modifications to the engine c arried out at a qualified specialist workshop which has the necessary special-ist knowledge and tools to carry out the work required.

Merc edes-Benz recommends that you use a Merc edes-Benz Service Centre for this pur-pose.

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Tampering with the fuel-injection sys-tem and engine electronics can affect the engine's performance and emis-sions characteristics. Compliance with the factory settings and legal environ -mental protection conditions can then no longer be guaranteed.

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Safety

Safety /emergency running programs

4

Safety/emergency running programs

The engine is equipped with an electronic control system which monitors both the engine and itself (self-diagnostic system). As soon as the electronic co ntrol system has detected and assessed a malfunction, one of the following measures is automati-cally implemented:

When the engine is in operation, the electronic system warnin g lamp lights up, indicating a malfunction.

The fault codes may be shown on a dis-play which is part of the Telligent® engine system (vehicle diagnostic sys-tem).

The engine switches to the appropriate back-up function for continued (but re-stricted) op eration (e.g. constant emer-gency running sp eed).

Electronic system warning lamp

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Incorrectly performed maintenance and re-pair work on the engine can imre-pair both its correct operation and safety, leading to ac-cidents and personal injury as a conse-quence.

Always have work on or modifications to the engine carried out at a qualified specialist workshop which has the necessary special-ist knowledge and tools to carry out the work required.

Merc edes-Benz recommends that you use a Merc edes-Benz Service Centre for this pur-pose.

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The fault codes can be read from the DaimlerChrysler diagnostic testers (STAR DIAGNOSIS or Minidiag 2 test-er), connected to the 14-pin diagnostic

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Genuine Mercedes-Benz parts

4

Genuine Mercedes-Benz parts

Make sure that the replacement parts are suitable for your vehicle. Parts which lead to a vehicle modification, e.g.:

a change in the type of vehicle ap-proved in the General Op erating Permit which could pose a threat to road

us-ers, or

cause a deterioration in exhaust gas emission levels or noise levels, will result in the invalidation of the General Operating Permit (in many co un tries). The use of n on-approved parts can impair safe-ty.

Additional information about recommend-ed conversion parts and accessories and permissible technical modifications is available from any Mercedes-Benz Service Centre. Always quote the en gine plate and type d esignation when ordering genuine parts. You will find the numbers on the en-gine ( page 22) and on the engine data card ( page 24).

Environmenta l note

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To combine cost-effective repairs with recy-cling, Mercedes-Benz also offers recondi-tioned engines and parts. These are of the same quality and have the same warranty as new parts.

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5 Operation

Commissioning Monitoring engine operation Stopping the engine Winter operation Cleaning/protective treatment Service products

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Commissioning

5

Commissioning

When it leaves the factory, the engine is filled with engine oil in accordance with Sheet 228.5 of the Mercedes-Benz Service Product Guidelines.

These high-quality engine oils assist the running-in process, enabling the first oil change to take p lace at the usual oil change intervals for normal o peration. This eliminates the need for special initial oper-ation oils and the oil change otherwise re-quired .

The extended maintenance intervals can be observed if engine oils in accordance with Sheet 228.5 of the Mercedes-Benz Specifications for Service Products are used.

Oil filler neck

Check the oil level and add engine oil if necessary via the filler neck (arrow) up to th e maximum mark on the dipstick ( see page 71).

Topping up with coolant

Coolant composition ( see page 63) Filling the cooling system

( see page 94). Preparation

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Operation

Commissioning

5

Refuelling

Use summer or winter fuel depending on the season. See also "Diesel fuels" ( page 60).

Bleeding the fuel system

The fuel system is b led when the engine is started after refuelling if the fuel system was previously allowed to run dry. Contin-uous bleeding takes place automatically in the filter.

Checking the batteries

Only use batteries which are completely filled and have been perfectly maintained. Grease the battery terminals with acid-proof grease (terminal grease). !

Make sure that utmost cleanliness is observed while refuelling and that no water is allowed to enter the tank.

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To ensure that the fuel system can b e bled, the battery must have enough charge when the engine is started.

Risk of burning

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The acid contained in batteries burns skin and eyes on contact.

Do not allow acid to come into contact with your skin, eyes or clothing. Wear suitable protective clothing, as

battery acid can burn through normal c lothing. In addition, protective gloves and safety goggles should be worn. Rinse acid splashes off immediately with

c lean water and consult a doc tor if nec-essary.

Risk of explosion

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Gases escaping from batteries can explode and injure people.

Therefore, do not allow fire, naked flames, smoking or the creation of sparks in the vi-cinity of batteries.

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The cable cross-sections are depend-ent on the distance between the bat-tery an d the starter motor.

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Commissioning

5

Carry out the work listed under "Prepara-tion for commissioning" ( page 42) be-fore operating the engine for the first time. Switch on the operating current. Start the engine with the setpoint value

sensor at idling position (e.g. accelera-tor pedal), for instance by operating the starter switch on the equipment or Start button2 on the engine, ( see page 47).

Start-Stop buttons 1 Stop button 2 Start button

Starting the engine for the first time

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As a safety feature, the Telligent® en-gine system is equip ped with a function that o nly allows the engine to be start-ed with the transmission in neutral.

Risk of burns

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The engine bec omes very hot while it is run-ning and remains so for some time after it has stopped. It will cause burns if you touc h it.

Before starting any work on the engine, al-low all engine parts to cool down or else wear suitable gloves and items of clothing to protect yourself against hot engine compo-nents.

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Operation

Commissioning

5

To check the coolant level:

Leave the engine running at moderate speeds for approximately 5 minutes. If the coolant temperature is below

50 °C, check the coo lant level again and add coolant if necessary.

Risk of injury

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There is a danger of limbs being caught, trapped, crushed or torn off by rotating en-gine parts. Therefore you should:

Keep a safe distance between yourself and rotating engine parts, including when the engine is being started. Wait until all engine parts have come to

a standstill before carrying out any work on the engine.

Wear work clothing which is fastened and close-fitting. Wear a hair net if nec-essary. Remove jewellery such as watches and necklaces.

Risk of scalding

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The cooling system is pressurised. Hot cool-ant can spray out when the cooling system is opened and scald your skin and eyes. Only open the cooling system at coolant

temperatures below 90 °C.

Unscrew the sealing cap slowly and re-lease any excess pressure completely before opening the cap fully.

Wear suitable protective gloves, protec-tive clothing and safety goggles when handling c oolant.

Risk of poisoning

G

There is a risk of poisoning if coolant is swal-lowed.

Never swallow coolant.

Never put coolant into container nor-mally used for beverages.

Store coolant out of the reach of chil-dren.

(46)

Commissioning

5

Only close the heating system valves o nce the engine has been running for a brief pe-riod. Top up with coolant if necessary. Check the engine for leaks.

Check the hose fittings, hose clamps and pipe co nnection s on the engine as well as the oil feed and return lines o n the exhaust gas turbocharger fo r leaks and firm seating, and tighten if neces-sary.

Check the engine oil level approximate-ly 5 minutes after stopping the engine and add oil up to the maximum mark on the dip stick if necessary.

Check for firm seating of mountings on the engine.

Check the securing bolts on the ex-haust manifold, engine mountin gs, coolant pump, starter motor and air compressor for firm seating. !

If a heating system is connected to the cooling system, all heating system valves must be o pened while the co ol-ing system is beol-ing topped up. Otherwise there might be too little coolant in the cooling system after fill-ing.

(47)

Operation

Commissioning

5

Sta rting procedure

In the case of vehicle engines, secure the vehicle to prevent it from rolling away acci-dentally:

Apply the parking brake.

Shift the transmission into neutral. Place wheel chocks in front of or

be-hind the wheels.

Insert the key into the ignition and turn it to the driving position.

The following indicator and warning lamps light up:

1 Charge current indicator lamp 2 Electronic system warning lamp 3 Flame-start system indicator lamp or

grid heater

Start the engine within 30 secon ds o f the flame-start indicator lamp going out. Starting the engine

Risk of injury

G

If not properly secured, a vehicle might acci-dentally be set in motion when the engine is started, knocking people down or trapping them. Before starting the engine:

Prevent the vehicle from rolling away by applying the parking brake and, if neces-sary, by placing chocks under the wheels.

Shift the transmission into neutral.

i

Starting the en gine for the first time ( see page 44).

Carry out special measures before starting the engine when it has been stopped for a long period, see the "Cleaning/protective treatment"

sec- page 55).

i

At outside temp eratures below –30 °C we recommend preheating the coolant (e.g. using an electric preheating de-vice)

(48)

Commissioning

5

using the starter switch on the equip-ment

using Start button 2 on the engine. Monitor the oil pressure gauge

immedi-ately after starting the engine. At extremely cold temp eratures, do not

place the cold engine under a full load im-med iately after starting.

!

Keep the engine running at idling speed un til an oil pressure reading is dis-played. If no oil pressure is displayed after approximately 10 seconds, switch off the engine. Determine the cause; see the "Oil pressure" section ( page 51).

i

If necessary, break off the starting procedure after a maximum of 20 sec-onds, and then repeat after app roxi-mately 1 minute.

The charge current indicator lamp and electro nic system warning lamp must go out after the engine has started. If they remain on, there are malfunctions; ( see page 49) and ( page 50).

i

The indicator lamp for the flame-start system lights up for approximately 2 seconds (function check, flame-start system not in operation) to approximate-ly 20 seconds (maximum preglow time) depending on the outside temperature.

If the indicator lamp for the fl ame-start system does not go out after approxi -mately 20 s ec onds, there is a fault; s ee the "Telligent® engine s ystem" sec tion ( page 50).

i

The grid heater is controlled by the drive control unit or the ADM control unit. The preglow time lasts for approximately 30 seconds and depends on the temper-ature of the coolant and the charge air. During the preglow time, the indicator lamp lights up and then goes out once the preglow time has finished.

(49)

Operation

Monitoring engine operation

5

The charge current indicator lamp must go out after the engine has been started.

Charge current indicator lamp

If the indicator lamp does not go out or lights up when the engine is running, stop the engine and check the poly-V-belt.

Charge current !

The poly-V-belt contact surfaces must not be damaged (e.g. torn), oily or glazed.

Do not run the engine without a poly-V-belt since the alternator and coolant pump will not be driven. This will result in engine damage.

(50)

5

The electronic system warning lamp must go out after the engine has been started.

Electronic system warning lamp If the warning lamp does not go out or lights up while the engine is running, there is a fault in the Telligent® engine system. Each fault is stored in the system with a sp ecial fault code. Even temporary faults are stored.

The fault codes may be shown on a display which is part of the Telligent® engine sys-tem (vehicle diagnostic syssys-tem).

Fault codes can be read using

DaimlerChrysler diagn ostic equipment (STAR DIAGNOSIS or Minidiag 2-Tester), ( see page 31). If the electronic system warning lamp lights up while the engine is running, read or determine the fault code.

Flame-start system indicator lamp

There is a fault in the flame-start system, if: the flame-start system indicator lamp

lights up when the engine is running the flame-start system indicator lamp

does not go out after more than ap-proximately 20 seconds when the en-gine is started

(51)

Operation

5

Have the flame-start system checked at a

specialist workshop. DaimlerChrysler rec-ommends that you visit a Mercedes-Benz Service Centre for this p urpose as it has the necessary specialist knowledge and tools to carry out the work required .

Oil pressure

i

The flame-start system switches off au-tomatically, if:

the engine is not started within 30 seconds of the flame-start sys-tem indicator lamp going out the engine is started while the

flame-start system indicator lamp is still lit

the charge current indicator lamp does not go out when the engine is running

the engine reaches a temperature at which the flame-start system is no longer needed

Grid heater* !

There is a fault with the grid heater if the indicator lamp flashes.

!

Once the operating temperature has been reached, the engine oil pressure must not fall b elow:

2.5 bar at rated speed 0.5 bar at idling speed

If the pressure falls below these values, stop the engine and determine the cause.

(52)

Stopping the engine

5

Stopping the engine

After driving at full power output or at a high coolant temperature, allow the en-gine to idle without load for on e or two minutes.

Press Stop button 1 on the engine or on the equipment-resident stopping fa-cility.

!

Stop the engine immediately if you o b-serve any of the following signs: oil pressure drops or fluctuates

considerably

power and speed drop while the sition sensor (accelerator pedal po-sition sensor) stays in the same position

large amounts of exhaust smoke are emitted from the exhaust coolant and oil temperature

in-crease very quickly

unusual noises suddenly occur in the engine or exhaust gas turbo-charger

(53)

Operation

Winter operation

5

The following notes should be observed at the start of the cold season:

Fuel

Use cold-resistant diesel fuel ( see page 60).

Engine oil

When changing the engine oil, select an engine oil that is compatible with the SAE class and the ambient temperatures ex-pected during the period of use ( see page 62).

Coola nt

Check the coolant's antifreeze p rotection in good time and increase the antifreeze/ corrosion inhib itor concentratio n if neces-sary ( see page 63).

Risk of fire

G

There is an increased risk of fire when han-dling fuels as they are highly flammable. Avoid fire, naked flames, and sparks and re-frain from smoking when handling fuels.

G

The cooling system is pressurised. Hot cool-ant can spray out when the cooling system is opened and scald your skin and eyes. Only open the cooling system at coolant

Wear suitable protective gloves, protec-tive clothing and safety goggles when handling c oolant.

G

(54)

5

Batteries

Have the batteries serviced and recharged more frequently during the cold months of the year.

Careful maintenance and low power con-sumption will help maintain the full battery charge. Starting capacity is greatly re-duced in cold weather; for example, at -10°C it is only about 60% of normal ca-pacity. If the engine is n ot used for a long period of time, store the batteries in a heated place if possible. Ensure goo d ven-tilation when recharging.

Risk of a cid burns

G

The acid contained in batteries burns skin and eyes on contact.

Do not allow acid to come into contact with your skin, eyes or clothing. Wear suitable protective clothing, as

battery acid can burn through normal clothing. In addition, protective gloves and safety goggles should be worn. Rinse acid splashes off immediately with

clean water and consult a doc tor if nec-essary.

Risk of explosion

G

Gases escaping from batteries can explode and injure people.

Therefore, do not allow fire, naked flames, and the creation of sparks and do not smoke in the vicinity of batteries.

(55)

Operation

Cleaning/protective treatment

5

Cleaning the engine

G

Care and cleaning agents can be toxic and lead to severe poisoning if swallowed. Always keep care and cleaning agent

containers closed and out of the reach of children.

Never store care or cleaning products in foodstuff containers suc h as bottles so as to avoid c onfusion with foodstuffs. Observe the instructions for using care

and cleaning products.

Risk of fire and injury

G

Fuels are highly flammable and can injure your health. If they are used as cleaning agents, they c an cause fires or skin irritation and poisoning.

Never use fuels for cleaning.

H

Observe the regulations for environmental protec tion.

Only clean the engine in a washing area de-signed for this purpose. Dispose of empty packaging and used cleaning materials in an environmentally-responsible manner.

!

Make sure that water does not enter the intake, ventilation or bleed ducts. Protect the engine after cleaning. Be careful to protect the belt drive against preservative agents.

i

Information about suitab le cleaning and preservative agents is available from any Mercedes-Benz Service Cen-tre.

(56)

5

High-pressure cleaners

Observe the manufacturer's operating in-structions.

Informatio n about suitable cleaning an d preservative agents is availab le from any

Blow out any foreign objects (dust, in-sects, etc.) from the radiator fin s using compressed air or remove by spraying water on the rear side of the rad iator (against the direction of the cooling air flow).

!

Maintain the minimum distance b e-tween the high-pressure cleaner nozzle and the object to be cleaned:

approximately 70 cm for round-spray jets

approximately 30 cm for 25° flat-spray jets and concentrated-power jets

Keep the water jet constantly moving while cleaning. To avoid damage, do not aim the water jet directly at: electrical components connectors

seals or hoses

Cleaning the cooling system

H

Collect used coolant, cleaning solutions and detergents and dispose of them in accord-anc e with c urrent local regulations and in an environmentally-responsible manner.

!

Only apply moderate pressure when cleaning since the radiator fins could otherwise be damaged.

G

The cooling system is pressurised. Hot c ool-ant can spray out when the cooling system is opened and scald your skin and eyes. Only open the cooling system at coolant

Wear suitable protective gloves, protec-tive c lothing and safety goggles when handling coolant.

(57)

Operation

5

Drain off coolant when the engine is

cold ( page 95).

If a heater is attached to the cooling system, open the regulating valves ful-ly.

Degreasing

Fill the cooling system with a 5% solu-tion of water and a mild alkaline clean-er, e.g. "P3 Croni" (50 g cleaning agent per litre of water).

Warm up the engine at moderate en-gine speed up to approximately 80°C (coolant thermostat starts to open) an d allow to run for approximately 5 min-utes longer.

Switch off the engine and allow to cool to approximately 50°C .

Drain off the cleaning solution com-pletely.

Immediately afterwards, fill the cooling system with clean water, warm up the engine, and d rain off the water after 5 more minutes. Then repeat the pro-cedure a second time.

Fill the cooling system with new cool-ant ( page 96) and follow the

instruc-Risk of poisoning

G

(58)

5

The sp ecial protection required will d e-pend on the length of time the engine is to be out of use as well as the climate of the place where the engine is to be located o r stored.

After cleaning the engine, store it in a dry, well-ventilated place as far as p ossible. If this is not possible, the intervals for carry-ing out regular protective measures must be halved.

It is essential that the engine be protected from direct contact with water (rain/spray water).

If the engine is to b e out of use fo r less than 12 months and the above cond itions are met, no corrosion-p rotection measures need to be taken.

If the engine is to b e out of use fo r more than 12 months and there are excep-tional storage and transport condi-tions, special p rotective treatment measures are required.

Information is available from any

Mercedes-Benz Service Centre. We strong-ly recommend asking for informatio n. Protective treatment

(59)

Operation

Service products

5

Greases and lubricants must be compati-ble with engine components. For this rea-son, only brands that have been tested and

Special lub ricant additives are not neces-sary. The warranty entitlement may be re-stricted if special lubricant additives are used.

Risk of poisoning/injury

G

Service products can cause injury or poison-ing if they come into contac t with skin or are swallowed.

Observe the prevailing regulations when handling service products and storing and disposing of them. Service products could otherwise endanger people and the environ-ment.

Always wear appropriate protective clothing and a breathing mask when handling service products. If possible, avoid inhaling vapours.

Do not allow service products to come into contac t with your skin, eyes or clothing. Clean affected areas of skin with soap and water.

If service products do come into contact with your eyes, rinse off thoroughly with c lean water and consult a doc tor if nec-essary.

Consult a doctor immediately if a serv-ic e product is swallowed.

Keep service products out of the reach of children.

Risk of fire

G

There is an increased risk of fire when han-dling fuels and lubricants as they are highly flammable.

Avoid fire, naked flames, and sparks and re-frain from smoking when handling service products.

i

Information is available from any Mercedes-Benz Service Centre.

H

Dispose of service products as well as parts which come into contact with servic e prod-ucts, e.g. the filter, in an environmentally-responsible manner.

(60)

5

Only use commercially available vehicle diesel fuels (EN 590). Grades such as ma-rine diesel fuel, heating oils, etc. are not permitted.

Fuel additives are not necessary. The war-ranty entitlement may be restricted if fuel additives are used.

If diesel fuels with a sulphur content above 0.3% by weight are used, carry out an oil change at shorter intervals. Observe the information provided in the Maintenance Booklet.

Filling th e vehicle's fuel tank from drums or canisters may introduce impurities into the fuel system. This can lead to fuel system malfunctions. Therefore, filter the fuel when filling the tank.

The 900 series engines are suitable for use with FAME fuels in accordance with DIN E 51606. If you do so, you must con-sult a Mercedes-Benz Service Centre to have the exact operating p rocedures (e.g. maintenance intervals) explained. Diesel fuels in extremely cold weather At low outside temperatures, paraffin sep-aration may affect the flow characteristics of diesel fuel.

To prevent operating p roblems (e.g. as a result of blo cked filters), diesel fuel with improved cold flow pro perties is available on the market in the winter months. Devia-tions may be possible in the transition be-tween the cold and the warm seasons, and in other countries. In Germany, special cold-resistant winter-grade diesel fuels are sold. They en sure reliable op eration down to app roximately –20°C. Winter-grade die-sel fuel can normally be used without risk of malfunctioning at the outside tempera-tures expected in the country of sale. Diesel fuels

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Operation

5

If summer diesel fuel or winter diesel fuel

with less resistance to low temperatures is used, only add a specific quantity of flow improver or kerosene, depending on the outsid e temperatures.

Add the flow-improver add itive to the die-sel fuel in good time, b efore paraffin sepa-ration affects the diesel's flow properties. Malfunctions caused by paraffin separa-tion can only be remedied by warming up the entire fuel system.

Do not ad d additives to especially cold-resistant winter d iesel fuels, as the fuel's cold-flow prop erties could deteriorate.

Flow improvers

The effectiveness of flow imp rovers cannot be guaranteed with all fuels. Comply with the manufacturer's recommendations. In-formatio n about approved flow improvers is available from any Mercedes-Benz Serv-ice Centre.

Kerosene

Add as little as possible, d ep ending on out-side temperatures. The addition of 5% by volume of kerosene improves the cold-resistance of diesel fuel b y approximately 1°C. Do not exceed the maximum mixing ratio of 50% kerosene.

Risk of fire a nd explosion

G

Adding petrol reduces the flash point for the diesel fuel and inc reases the risk of fire and explosion.

Therefore, never add petrol to diesel fuel.

For this reason, you must avoid fire, na-ked flames and sparks and refrain from smoking when handling these service products.

Observe the relevant safety regulations.

!

If petrol is ad ded , there is a risk of seri-ous engine damage.

Therefore, never add petrol to diesel fuel.

(62)

5

For safety reasons, o nly mix kerosen e with diesel fuel in the fuel tank. Add the kero-sene first, then the diesel fuel. Run the en-gine for a while to ensure that the additive reaches all parts of the fuel system.

Engine oil SAE classes

Engine oils are specially tested for suitabil-ity in o ur engines. Therefore, only use en-gine oil brands approved by Benz. These are listed in the Mercedes-Benz Specification s for Service Products. Observe the information p rovided in the Maintenance Booklet.

Risk of fire and explosion

G

Adding kerosene reduc es the flash point of the diesel fuel and increases the risk of fire and explosion.

For this reason, you must avoid fire, na-ked flames and sparks and refrain from smoking when handling these service produc ts.

Observe the relevant safety regulations.

Engine oils

i

The use of non-approved engine oil brands can restrict the warranty enti-tlement.

(63)

Operation

5

If engine oils of a d ifferent grade are used,

the oil change intervals will alter. Informa-tion is available from any Mercedes-Benz Service Cen tre. Select the SAE class of en-gine oil in accordance with the outside temperatures.

After maintenan ce work, the en gine oil change is entered in the Maintenance Booklet along with the engine oil b rand, grade and SAE class.

Only use engine oils of the same grade and SAE class when top ping up.

The coolant is a mixture of water and anti-freeze/corrosion inhib itor. The coolant must remain in the cooling system all year round to ensure anti-corrosion protection and to increase the boiling point.

Water

Water without additives is not permitted as a coolant, even if antifreeze properties are not necessary.

The coolant water must satisfy certain re-quiremen ts which are not always fulfilled by drinking water.

If the water is not of sufficient quality, it must be treated.

i

If engine oil of a lower grade is used to top up, the properties of the engine oil are impaired and the en gine oil and fil-ter changes must therefore be carried out at shorter in tervals.

Coola nt

G

i

Renew the coolant every three years, since the level of corrosio n protection gradually decreases.

i

Information is available from any Mercedes-Benz Service Centre.

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5

Antifreeze/corrosion inhibitor

To preven t damage to the cooling system: Only use approved

antifreeze/corro-sion inhibitor. Information is available from any MercedesBenz Service Cen -tre.

When topping up (after coolant loss), make sure that the antifreeze/corro-sion inhibitor concentration is 50% b y volume (th is ensures antifreeze protec-tion down to –37°C).

Do not use an antifreeze/corrosion in-hib itor concentratio n of over 55% by volume (maximum antifreeze protec-tion). Above this concentration, anti-freeze protection deteriorates and heat dissipation is less effective.

Coolant mixing ratio:

In exceptional cases, when no an tifreeze/ corrosion inhibitor is available and/or no antifreeze protection is required (in tropi-cal regions), use an approved coolant additive without antifreeze properties in accordance with Sheet 312.0 of the Mercedes-Benz Specifications for Service Products (e.g. MB corrosion inhib itor A 000 98913 2510 b y DaimlerChrysler AG or an approved additive from another man-ufacturer).

Disposal

!

If the concentration is too low, there is a risk of engine damage as a result of corrosion/cavitation. Antifreeze protection down to –37 °C approxi-mately –45 °C Water % by vol. 50 45 Antifreeze/cor-rosion inhibitor % by vol. 50 maximum 55 !

In this case, the coo lan t must be re-newed every year.

H

The coolants mentioned are biodegradable substanc es. When disposing of used cool-ants, observe the legal requirements and waste water regulations in the country con-cerned.

We recommend that you ask the relevant water authority for advice on the disposal of coolant.

Due to the complex tasks which a modern coolant must perform, improper "recycling" consisting simply of a mechanical pre-clean-ing must be emphatically rejected.

(65)

6 Maintenance

Maintenance instructions Overview of work plans Work plans

(66)

Maintenance instructions

6

Maintenance instructions

This section describes all maintenance work which concerns the engine.

The scope of maintenance and frequency of maintenance work depend on the differ-ent op erating conditions and are listed in the Maintenance Bo oklet.

Have the work which is carried out con-firmed in the Maintenance Booklet. This proof of regular maintenance is always re-quired for any warranty claims.

Also o bserve the maintenance regulations for special accessories.

Risk of a ccident

G

Before any maintenanc e work or repairs are carried out, please make sure that you read the relevant sections of the tec hnical doc u-mentation conc erned with servicing and re-pairs, for example:

Operating Instructions and workshop in-formation

You should also familiarise yourself first with the legal requirements, for example: work safety and accident prevention

regulations

You could otherwise fail to recognise dan-gers and could injure yourself or others.

G

Faulty maintenance work or failure to carry out maintenance work, e.g., not changing the oil filter or not observing the correct maintenance interval, can cause engine damage. Engine damage can lead to an in-creased risk of ac cident.

For this reason, please observe the instruc-tions on servicing the engine given in these Operating Instructions.

i

All maintenance intervals and mainte-nance work refer to genuine Mercedes-Benz parts and accessories specifically approved for the en gine by

DaimlerChrysler.

!

The engine oil filled at the factory in accordance with Sheet 228.5 of the Mercedes-Benz Specifications for Serv-ice Products must be changed if more than 12 months elapse before th e en-gine is op erated for the first time.

(67)

Maintenance

Overview of work plans

6

Overview of work plans

Engine:

Oil change and filter rep lacement

Poly-V-belt: Check condition

Checking for leaks and general condi-tion

Check for points of abrasion and incorrect positioning:

Engine

Lines and hoses on the engine

Intake pipe between air cleaner and en-gine

Cooling and heating system

Checking and correcting the fluid level If more fluid is lost than can be accounted for by normal consumption, trace the cause and rectify.

Engine cooling system:

Check and correct fluid level and antifreeze / corrosion inhibitor concen-tration

Check and adjust valve clearance

Fuel prefilter: Clean filter element Fuel filter: Replace filter

Fuel prefilter with water separator: Replace filter element

Engine brake*: Check condition and settin g

Renew coolant Maintenance service

i

Change the engine oil and replace the oil filter at least once a year.

Additional work

i

The valve clearance must be ad justed during the first maintenance service and then durin g the 3rd, 5th, 7th main -tenance services and so on.

Additional work during every 3rd ma intenance service

i

Renewal interval depends on the cool-ant additive used (see Mercedes-Benz Specifications for Service Products).

(68)

Work plans

6

Work plans

Visual inspection of the engine for signs of leakage.

Sealing points which are slightly damp are harmless.

Make a visual inspection of lines and hoses. Also make a listening check for: leaks

check for undamaged condition chafe-free routing and

correct mounting Engine: Checking for leaks and

general condition

!

Remedy more significant leaks involv-ing constant oil loss immediately.

Lines and hoses on the engine: Checking for leaks and general condition

Risk of burns

G

The engine is very hot when it is running and also for some time after it has been swit-ched off. It may cause burns if you touch it. Before starting any work on the engine, al-low all engine parts to c ool down or else wear suitable gloves and items of clothing to protect yourself against hot engine compo-nents.

Risk of injury

G

There is a danger of limbs being c aught, trapped, c rushed or torn off by rotating en-gine parts. T herefore you should:

Keep a safe distance between yourself and rotating engine parts, including when the engine is being started. Wait until all engine parts have come to

a standstill before carrying out any work on the engine.

Wear work clothing which is fastened and close-fitting. Wear a hair net if nec-essary. Remove jewellery such as watches and necklaces.

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Introduction

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Safety

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Operation

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