Control and operation

Setting the machine into operation

When you use this mode, this symbol "Brakes manu" is shown on the display.

Push the safety lever up. The brakes are engaged.

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

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.

Setting the machine into operation

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

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 on the spot

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

Fig. 3-70 Hand levers to 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.

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

3.4Working with the machine

Working safely with the machine

aint yourself 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.

copyright © Liebherr-Mining Equipment Colmar SAS 2020 the event of any transfer of electricity: e danger zone to a sufficient distance, which had been touched or damaged, has been turned off! cured. squares, observe current traffic regulations and if necessary, ensure that the machine has been made safe as per regulations beforehand. s of poor visibility or darkness. 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. tudinal 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. chment 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. chment 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. chment 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. chment 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. s can have various functions. Always check their functions when starting up the machine. 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. Should this happen, lower the machine 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.

•warn any personnel in the vicinity not to come close to the excavator and not to touch it, someone turns off the voltage.

EXCEPTION: excavators used for loading and unloading, see the part "Safe use when loading and unloading (particularly when loading and unloading wood)" on page 92.

Otherwise, you must stop the excavator, turn off the radio and keep inside the closed cab until the end of the storm.

The use of these Mining methods will result in increased fatigue levels to steel