Control and operation

Setting the machine into operation

Safety controls for hydraulic pumps

A1002 Electrical plate in E1005

S74_1 Safety switch for pumps power safety control

S74_2 Safety switch for pumps flow safety control

The electrical plate A1002 is located in the cab connection box E1005. You can also refer to chapter 4 of this manual.

Pumps power safety control

During safety operation, a specified value for the power of the hydraulic pumps is activated.

Push the switch S74_1

When you use this mode, this symbol "Power control off" is shown on the display.

Pumps flow safety control

During safety operation, a specified value for the flow of the hydraulic pumps is activated.

Push the switch S74_2

When you use this mode, this symbol "Flow control off" is shown on the display.

Safety fans control

Control

A1002 Electrical plate in E1005 S74_3 Safety switch

The electrical plate A1002 is located in the cab connection box E1005. You can also refer to chapter 4 of this manual.

If the oil cooling fan do not operate correctly: Push the switch S74_3 The fans operate at maximum speed.

When you use this mode, this symbol "Fan control off" is shown on the display.

Safety controls for electric system

Battery power supply

If the power supply from the electric plant stops, you can switch to the battery of the excavator to supply the service system and to lower the attachment if necessary. Push button S185.

Power supply is switched to the battery. The indicator light comes on.

Tow the machine

It is not permitted to tow the machine.

If you must move or recover a defective or unserviceable machine, contact Liebherr customer service.

3.3.4Travel movements Travel straight ahead

1 Idler 5a / 5b Pedal for the left travel gear

2 Sprocket 6a / 6b Pedal for the right travel gear

Caution!

When you travel forward, the uppercarriage must be turned to the undercarriage to have the idler 1 at the front and the sprocket 2 at the rear.

Travel forward

Push the two pedals forward (5a and 6a).

Travel rearward

Caution!

Before you travel rearward, make sure that you can safely go into the area behind you.

Push the two pedals down (5b and 6b).

Turn

Turn left (A)

Push the left pedal down (5b) and at the same time push the right pedal forward (6a).

Turn right (B)

Push the right pedal down (6b) and at the same time push the left pedal forward (5a).

Turn with one track chain

Turn to the left (A)

Push the right pedal forward (6a).

Turn to the right (B)

Push the left pedal forward (5a).

Note!

If possible, do not turn rearward for the preservation of the track components.

Operate the travel movements manually

If you must operate the travel movements very carefully and gradually: Put the hand levers 1 and 2 into the two travel pedals. Control the travel movements manually.

Note!

For safety reasons, you must control the travel movements manually when the machine must travel onto or off a low loader.

Control the speed

The "High speed gear" button of the control keyboard controls the travel speed. The travel motors can be operated in two different positions: Normal drive (position 1):

Maximum tensile force of the two travel gears at moderate speed. Fast drive (position 2):

Reduced tensile force of the two travel gears at maximum speed.

Push the "High speed gear" button. The first LED in the button comes on. Transfer from normal drive to fast drive is operated.

While travelling, the machine will automatically switch from normal drive to fast drive as the ground conditions permit. If the ground conditions become more difficult again, the system will automatically switch from fast drive to normal drive.

Push the "High speed gear" button again. The first LED in the button goes off. Transfer from normal drive to fast drive is deactivated.

When the button is switched off, the travel motors stay in position 1

Brake the machine

Stop the machine while travelling

Release the travel pedals. The pedals go back to the neutral position. The travel gear stops. The machine stops.

When the travel pedals are in the neutral position, the hydrostatic travelling mechanism prevents the machine from rolling off.

Caution!

The machine stops suddenly if you release the travel pedals quickly!

Always fasten the safety belt before you start the machine.

Apply and release the travel brake

The travel brake is applied by default when you start the machine.

Push the "Travel brake" button on the related keypad. The first LED in the button goes off. The travel brake is released. The undercarriage is unlocked.

Push the "Travel brake" button again. The first LED in the button comes on. The travel brake is applied. The undercarriage is locked.

3.4Working with the machine

Working safely with the machine with the special features of the job site and any special precautions and warning signals. Examples of particular work environments would be on-site or traffic obstructions, the load-carrying capacity of the ground and any requirements to make the job site safe from public use. ground. reduced visibility and changeable ground conditions. power and gas lines on the job site and take particular care when working near them. If necessary, inform the responsible authorities. laws, regulations and rules applicable at the place of use. aerial lines. Do not allow the attachment to come near cables when working near electrical aerial lines. Risk of fatality! Inform yourself about required safety distances. the event of any transfer of electricity: e or its attachment,

•warn any personnel in the vicinity not to come close to the excavator and not to touch it, the danger zone to a sufficient distance, solutely sure that voltage in the line, which had been touched or damaged, has been turned off! cured. lations and if necessary, ensure that the machine has been made safe as per regulations beforehand. ns of poor visibility or darkness. h the safety belt securely fastened (if available). mediately. given in the operating instructions. while the machine is moving. d operated in such a way that it is stable and that there is no danger of overturning. Only known loads may be moved with the attachment; this applies particularly when using the grab. ngitudinal direction when moving and hold the load as close to the ground as possible. start to tip or slide sideways, however, turn the upper structure to face downhill and lower the attachment at the same time. uphill and not side on to the slope. or you could lose control of the machine. diesel engine must run at maximal speed and the speed may only be reduced using the foot pedals. to protect the truck operator. ations etc., always use protective devices specifically designed for the purpose. overview of and whenever necessary, ask for the assistance of a spotter. Only permit one person to give you signals. machine operator. This people must be in with him. combination, there is a risk of collision between the work tool and the machine (uppercarriage and undercarriage). The greatest degree of care must be taken to avoid damage. combination, there is a risk of collision between the work tool and the cab, the cab protection or the boom cylinders. The greatest degree of care must be taken to avoid damage when the hoe teeth come within this area. combination, there is a risk of collision between the work tool and the attachment parts. The greatest degree of care must be taken to avoid damage. combination, there is a risk of collision between the lift ring of the attachment and the cab or the cab protection. Before operating, ensure that there is no risk of collision, especially on excavator with cab elevation. If necessary remove the lift ring. the soil. a ditch without striking the attachment on the ditch walls. tachment has been swung into a wall or any other obstacles. tracted are not permitted, even when working in a longitudinal direction. machine components. plications are required. with side cutters or that are during operations with rocky material. This would prolong the work cycles and may lead to damage to the bucket as well as further machine components. et position may only be employed if the working tool or the attachment does not touch the material. drill into the material is not permitted. slowly back to the ground. hydraulics. This would damage the machine. forbidden to raise the machine with the dozing blade (e.g. carving at the ceiling when tunnelling). ground collapse under the machine. in the following Mining applications is not approved or condoned by Liebherr: Scaling), without exception. hing or Double flitching) when the material is un-blasted and non-fragmented material which requires the boom down (rod side) pressure to exceed 50 bar.

EXCEPTION: excavators used for loading and unloading, see the part "Safe use when loading and unloading (particularly when loading and unloading wood)" on page87.

Otherwise, you must stop the excavator, turn off the radio and keep inside the closed cab until the end of the storm. s can have various functions. Always check their functions when starting up the machine.

The use of these Mining methods will result in increased fatigue levels to steel structures and components of the respective Liebherr Mining Machine and therefore will significantly reduce the expected lifetime of structures and/or components.

Working safely with the machine used for demolition application

n application are subject to specific conditions and must be fitted with special safety devices (for further information, contact Liebherr customer service).

application, you must also obey the additional safety instructions that follow.

Before the operation of the machine

ions are in the specified limits.

l safety devices necessary for the task operate correct- ly. le local regulations. or special tool you use. and approved operator protective structures (e.g. FOPS, front protective grid) are not installed. ffects on the machine stability, reduce the height and the speed of the movement. e attachment or special tool. the back-end. safely positioned on the ground. y and the acoustic warning signals. percarriage turns.

Incorrect use of the machine used for demolition application only by trained specialist personnel.

Do not stop it suddenly. Always move the attachment or special tool slowly and with constant speed movements.

Incorrect use of the attachment or special tool used for demolition application special tool exclusively designed for the task. l tool with closed windshield and with a front protective grid. its specified limits. For more information, nual of the tool manufacturer.

Safe use of a hydraulic hammer or a hydraulic ripper

ion, the use of a hydraulic hammer or a hydraulic ripper can result in vibrations, shocks or stresses which are higher than in normal use. It may reduce the expected lifetime of structures and/or components.

ripper must be selected with particular care. When using a hydraulic hammer or a hydraulic ripper not permitted by Lieb- herr, warranty for steel structures and machine components will be ceased. n the machine on firm and level ground. ripper designed exclusively for breaking stone, concrete and other breakable materials. draulic ripper in the longitudinal direction of the machine and with the windshield closed or with a front protective grid. that no cylinder is entirely extended or retracted and that the stick is not in the vertical position. performing retraction and extension motions of the hydraulic hammer. time to the same place. Change the breaking point. Too long uninterrupted operation of the hydraulic hammer leads to an unnecessary overheating of the hydraulic oil. lic hammer or of the hydraulic ripper to break stone or other materials. Do not move obstacles with the hydraulic hammer. Misuse of this nature would damage both the hammer and the machine. essure of the dampening accumulator of the hydraulic ripper must be adjusted depending on the nature of the ground and the excavator model.

Safe use of a ripper

where the use of a bucket is not efficient to break out rocks. Thus, these applications are more severe than in normal use.

n, the use of a ripper can result in vibrations, shocks or stresses which are higher than in normal use. It may reduce the expected lifetime of structures and/or components.

. Contact the Liebherr customer service.

ted by Liebherr, warranty for steel structures and machine components will be ceased.

n the machine on firm and level ground.

Safe use when loading and unloading (particularly when loading and unloading wood)

attachment raised and the load lifted up; this applies, for example, when loading and unloading wood.

ine will be displaced upwards in the vertical direction. The driving characteristics of the machine will thus be influenced persistently, e.g. through reduction of the dynamic stability. The following instructions are therefore to be observed at all times: mental conditions. noeuvres. aking, accelerating and changing direction. ed the upper structure to the driving position. when the attachment is raised. cab. there is a risk of objects falling from above. such as logs, is dependent on length, diameter and specific weight. The influencing variables present in a natural product, such as moisture, must be noted. with grabs require the machine operator to receive special instruction and training. sufficient training and practical experience.

Safe use of machines with tower elevation

gravity of the machine will be displaced upwards in the vertical direction. The driving and work characteristics of the machine will thus be influenced persistently, e.g. through reduction of the dynamic stability.

the machine must be aligned horizontally before use. In horizontal alignment, the centre of gravity of the uppercarriage is over the centre of the undercarriage, which reduces the risk of tilting. tilt despite being aligned!

The following instructions are therefore to be observed at all times: noeuvres. aking, accelerating and changing direction. ly be approached in the longitudinal direction in order to prevent unacceptable banking of the machine. slowly! as close as possible to the machine (Caution! swinging grab) and hold the load close to the undercarriage and above the substrate. ttachment or uppercarriage abruptly.

When moving the machine: holes and uneven surfaces jeopardize the stability of the machine. red machine characteristics (high centre of gravity) and environmental conditions.

When loading and unloading: the uppercarriage out of the transport position. capacity of the substrate). A support subsiding would have disastrous consequences!

Protection from vibration

building machinery are mainly the result of the type and method of use. The following parameters in particular are decisive influences: ng, brakes, contro control elements when driving and working. determines the vibrational loads since he selects the speed, gearbox ratio, working method and route himself. This means that there is a wide range of different vibrational loads for the same machine type. hydraulic excavators, this should be a seat which corresponds with EN ISO 7096). be adjusted depending on the weight and height of the operator. justment mechanisms regularly and ensure that these seat characteristics remain as per th structions. ine, particularly with respect to: tyre pressure, brakes, steering, mechanical connections etc. ment jerkily. working and driving in good condition: calculate in sufficient time to carry out any work required. ble) which reduce vibration for machines that are driven frequently.

Whole-body vibrational load for the machine operator can be reduced if the following recommendations are observed: attachment parts and auxiliary devices for each part of the job.

If such auxiliary systems are not available, regulate speed to avoid "oscillating" the machine.

3.4.1Uppercarriage swing movements

Turn the uppercarriage

The uppercarriage is turned using the left joystick.

Move the left joystick to the left c Uppercarriage turns left. Move the left joystick to the right d. Uppercarriage turns right.

Brake the uppercarriage

The machine has a hydraulic and a mechanical swing gear brake.

Hydraulic swing gear brake

Move the left joystick to neutral. A sufficient deceleration of the uppercarriage is achieved. Move the left joystick to the opposite direction. Maximum hydraulic braking action of the uppercarriage is achieved.

Mechanical swing gear brake

The uppercarriage can be locked in any position using a multi disk brake integrated in the swing gear.

The brake is negatively acting, hydraulically actuated and serves as a holding or parking brake.

Caution!

Damage to the machine.

Only lock the mechanical swing gear brake when the uppercarriage is stationary.

Press "Swing brake" button on the keyboard. Swing brake is engaged. Uppercarriage is locked. First LED in the button comes on. Press button again. Swing brake is released. Uppercarriage is unlocked. First LED in the button goes out.

The swing brake is engaged if the safety lever is up or the access ladder is down (if installed) or the service trap is down (if installed).

In option, a buzzer can be activated in the cab if you operate the joystick to turn the uppercarriage while the swing brake is engaged.

Caution!

The brake only applies when the uppercarriage is near standstill and if no swing motion is actuated with the joystick.

To stop the uppercarriage when working on a slope: Use the joystick to reduce the uppercarriage speed. Press "Swing brake" button to operate the swing brake. Move the joystick back to "0" position only after the brake operates.

Semi-automatic swing brake control (optional)

Make sure that the swing brake does not operate.

Tilt down the rocker switch S57 on the right joystick handle. The semi-automatic control of the swing brake is on. When the semi-automatic control of the swing brake is on:

Tilt up the rocker switch S57. The semi-automatic control of the swing brake is off. The swing brake is released.

Caution!

The brake only applies when the uppercarriage is near standstill and if no swing motion is actuated with the joystick.

To stop the uppercarriage when working on a slope: Tilt down the rocker switch S57.

Use the joystick to reduce the uppercarriage speed. Move the joystick back to "0" position only after the brake operates.