Control and operation

Operating and control elements

S357

– Touch / Lifting the attachment while the grapple is being closed

With this function, the working attachment is lifted slightly while the grapple is being closed. This reduces the risk of damage to the surface on which the grapple is used. Example: Protection of loading areas, ship bottoms and similar surfaces.

Note! This function is an auxiliary tool designed to assist the machine operator. Even if the function is activated, the surface can still be damaged due to lack of care.

S362 – Push button / Washer for cab roof window

The button turns on the electric cab roof window washer system. Washer fluid will be sprayed to the window and the cab roof window wiper will be actuated as long as the push button S362 is depressed.

S422 - Radio muting

S503

– Touch / Release in operator's cab

See the section "Safety access to electric machines for industrial applications with self-stabilising tower superstructure" in this chapter.

A – Additionnal standstill heater

The additionnal standstill heater is only working when the main switch ist switched off (S184). Its performance is 1,1 kW.

Two modes of operation are possible:

–MANU/OFF mode is used to switch on/off the additionnal standstill heater independdently of the programmation of the automatic mode

–AUTO mode is used as an automatic mode of the heater, progammed on time and day slot.

Only an authorized personn can change the programmation of the additionnel stanstill heater.

Specific controls for cab movements

.. of a cab on a hoist frame with double parallelogram copyright by

H83 – Control light / Cut - off of swing movements

This control light lights up to indicate that the swing movements of the uppercarriage have been cut off, due to a risk of collision between the bottom of the cab and the undercarriage.

See also "Swing movements shut off", in the heading "Cab adjustable on hoist frame with double parallelogram" further in this chapter.

S370 – Touch / Activation of cab movements

On the machines fitted with the optionally installed hoist frame with double parallelogram, the joystick U45 (see below) is made alive via the touch S370.

The cab position adjusting movements directed by the joystick U45 are possible only as long as the touch S370 is held depressed.

S477 – Touch / Unlatching of the safety cut - off of cab lowering

Once the cab has arrived in its lowest secure level the cab lowering movements are automatically cut off for safety reasons. The operator can then continue moving the cab down, for example to bring it in the access position, near the soil, while simultaneously keeping the touch S477 depressed.

See also "Safety cut off of cab lowering movements", in the heading "Cab adjustable on hoist frame with double parallelogram" further in this chapter.

U45 – Joystick for control of the cab movements

This joystick controls the up and downwards movements of the cab side and uppercarriage side elements of the double parallelogram cab elevation.

See also "Adjustment of the cab position", in the heading "Cab adjustable on hoist frame with double parallelogram" further in this chapter.

3.2Access and equipment of the cab

3.2.1Access to the cab

Climbing up to and descending from the cab

Caution!

Climbing up to and descending from the cab incorrectly could lead to injury. To acceed to the machine, exclusively use the steps, ladders and handrails destined for climbing up and leaving the machine.

–Keep ladders, footsteps, handles and handrail in clean condition and always free them from mud, oil, grease, ice, snow or any other obstacles.

–After reaching the uppercarriage, immediately close off the chain giving access to the footbridge.

–It is strictly forbidden to any person to try to accede to the excavator during operation without getting the permission by the driver

The person wishing to accede to the excava tor must first give signal to the driver

–Once the driver has recognized his intention, the driver must align the upper and the undercarriage, lower the attachment to the ground, get in work - or entrance position, lift the safety lever, leave the cab and open the access chain

The person is now allowed to approach and to climb up the machine.

–The driver must never allow another person standing on the platform around the uppercarriage during operation..

–Before leaving the cab and climbing down the machine, you must make sure the machine is parked on a flat, firm and level ground and the ladders and steps are aligned on upper and undercarriage.

–The dimensions of the ladder, stairway and guard rails are within ISO 2867 recommendations.

The ladder and catwalk lightening (option) is actuated, via the touch S127, from outside (bottom of the ladder) and from the cabine (right console).

Getting in the cab

Caution!

Entering or leaving the cab incorrectly could lead to injury. Ensure that the safety lever is always in its highest position when entering or leaving the cab.

Do not hold onto the controls to steady yourself.

1 Door handle 2 Latch 11 Door lock

Press the door lock 11 on the door handle 1 and open the door. If the door is to remain open during operations, swing the door back 180° and secure in the latch 2

Climb in with your face towards the machine and sit in the operator’s seat. If necessary adjust the seat horizontally vis-à-vis the joystick consoles and also vis-à-vis the feet plate with the control pedals.

Getting out the cab

Fig.

3 Door handle on door lock 4 Lever for the latch

Switch off the machine and push the safety lever up. Push the door handle 3 on the lock down. Open the door fully and secure it in the latch 2 Climb out with your face towards the machine.

To release the door latch: The door is secured in latch 2.

Move the lever 4 next to the cab frame outwards. The door is now unlocked. Close the door.

3.2.2The safety lever

The safety lever is mounted to the left controle console and is designed so to obstruct the way to the cab when tilted down in lower position.

Caution !

The operator must move this safety lever up before leaving the operator’s seat. The operator may only push the lever down when he is again seated in the operator’s seat, ready to work.

Before your leave the operator’s cab, pull the safety lever in upper position so to interrupt the servo control circuit: no working movements are possible if the joysticks or pedals are accidentally actuated while entering or leaving the cab, the swing brake applies automatically (the LED in the touch S17 is lighting), the swing brake can no longer be released using the touch S17

After you are seated again and before you begin operating the machine, push the lever down in lower position: the swing brake recovers the previous state (applied or released) before the lever had been pulled up, the pilot control devices (joysticks and pedals) become active again.

3.2.3Operator seat

Danger!

The adjustment of the operator seat could result in an inadvertent actuation of control elements, moving the machine or the attachment. This can lead to injury to persons or damage to property. Do not adjust the operator seat while driving the machine. Move the safety lever up.

1 Operator seat heating

3

2 Mechanical / pneumatic lumbar support*

9

11

13

* Model variant

Adjusting seat to body weight/seat height (in models with manual adjusting mechanism):

Sit down on the seat.

Adjust the seat height/body weight by pulling or pushing the lever 9 to the stop. Check the display 8

•green = settings correct •yellow = correction required

If necessary: Adjust the settings by pulling or pushing the lever 9 to the stop.

Adjusting seat to body weight (in models with automatic adjusting mechanism)*:

Before adjusting the body weight settings, set the shock absorber* to "soft".

Sit down on the seat.

Pull the lever 9 briefly upwards. The seat is automatically adjusted to suit the body weight of the operator.

Adjusting seat height (in models with automatic adjusting mechanism)*: Before adjusting the height, set the shock absorber to "soft".

Caution!

Risk of damage to compressor.

Do not run the compressor continuously for more than 1 minute.

Adjust the seat height by pulling or pushing the lever 9 to the stop.

Adjusting seat depth:

Lift the button 12

Sit on the seat and move it horizontally to the desired position.

To adjust the angle of inclination of the seat, press the button 13 Sit on the seat and move it to the desired angle.

Horizontal adjustment:

Pull up the lever 11

Adjust the operator seat in horizontal direction.

Release the lever. Ensure that the lever engages properly in the desired position (audible click).

Carry out the following check: After locking, it must be impossible to move the operator seat to a different position.

Horizontal adjustment with control consoles:

Pull up the lever 7

Adjust the operator seat together with the control consoles in horizontal direction.

Release the lever. Ensure that the lever engages properly in the desired position (audible click).

Carry out the following check: After locking, it must be impossible to move the operator seat to a different position.

Adjusting backrest:

Pull up the lever 3

Sit on the seat and move the backrest to the desired position.

Release the lever. Ensure that the locking lever engages in the desired position. Carry out the following check: After locking, it must be impossible to move the backrest to a different position.

Adjusting lumbar support (in models with mechanical adjusting mechanism): Adjust the height and curve of the lumbar pad by turning the hand wheel 2 at the back of the seat.

Adjusting lumbar support (in models with pneumatic adjusting mechanism)*: Adjust the curve of the upper and lower section of the backrest upholstery by pressing the two switches 2 at the rear of the seat.

Adjusting shock absorber*:

The shock absorption level can be adjusted to suit the actual road or terrain conditions.

Turn the handle 10 to the desired position and release it.

•Position1 = hard

•Position2 = medium

•Position3 = soft

Adjusting horizontal cushioning*:

Under certain operating conditions, you can improve the operator comfort by adjusting the horizontal cushioning mechanism. This helps reduce impact stress in travel direction on the operator as these impacts are better cushioned by the seat.

Move the handle 6 to the desired position.

•Position1 = horizontal cushioning OFF

•Position2 = horizontal cushioning ON

After the handle has been moved to position 1, ensure that is engages properly in this position: push the seat back until you hear an audible click.

Adjusting armrests:

Turn the hand wheel 5 until the armrests are in the desired position. If required, the height can be adjusted individually for each armrest:

Remove the cover cap 4 from the seat covering.

Loosen the hex (wrench size 13mm).

Set the armrest to the desired position.

Tighten the hex nut (25Nm).

Replace the cover cap on the hex nut.

Adjusting headrest:

Adjust the headrest 16 by pulling it from the engaging mechanism. Adjust the headrest angle by pushing it forward or back.

To remove the headrest, move it to the upper stop and then pull it with force from the seat.

Seat heating:

Actuate the switch 1 to switch on the seat heating.

•Position0 = seat heating OFF

•Position1 = seat heating ON

* Model variant

3.2.4Putting on and releasing the safety belt

Danger!

The safety belt is designed to protect the operator. Before starting the machine, always fasten the safety belt. Ensure that the safety belt is not twisted when it is fastened.

To ensure your safety, check the condition, function and fastening of the belt regularly and replace any damaged parts without delay.

Fig. 3-36 Safety belt

The safety belt is automatic. It is not necessary to adjust the length of the belt. Pull the belt and buckle 2 out of the roller mount 1. If pulled out of the roller mount sharply, the belt may lock. Push the buckle into the belt lock 3 until it fastens.

To open lock 4, push down on the belt lock using your thumbs. The safety belt will slide automatically back into the roller mount 1

3.2.5Windscreen

Fig. 3-37 Locked positions of the windscreen

The windscreen can be locked in two positions. –In the position a the windscreen is closed.

–In the position b the windscreen is fully opened (locked in place on the roof of the cab)

Caution!

It is not allowed to work with the machine when the windscreen is in an intermediate position!

To change the position of the windscreen

Pull the lever 1 in and down to unlock the windscreen. Move the windscreen using the handle 2, secure it in one of the two positions a or b and relock using the lever 1

3.2.6Sunshade

Fig. 3-38 Sunshades at windscreen and at cab roof

The cab is provided with two sunshades, located at the windscreen and at the cab roof window.

Maneuvering the sunshade at the windscreen

Using the strengthening tongue 1, pull the sunshade down to the desired position. Press the red button 2, the sunshade will roll itself up.

Maneuvering the sunshade at the cab roof

Pull out the sunshade and secure it in the holders designed for the purpose. To retract the sunshade, take it out of the holders and let it roll up slowly.

Access and equipment of the cab

3.2.7Emergency exit – rear window

In case of emergency, remove the rubber seal 2 from all around the rear window by pulling the clip 1 on the inner side of the rear window. Thereafter push the window out.

Note !

For the machines equipped with a cab elevation, steps, ladders and hand-rails (grips) are installed to secure the descent.

3.2.8Interior lighting

The dome light is controlled via the button 1

Push the button 1 to the right to switch on the light 2

Push the button 1 to the left.to switch on the spot 3.

Push the button 1 into central position to switch the dome light off.

3.2.9Fire extinguisher

The interior of the cab of Your machine is fitted with fixing points allowing the mounting of a fire extinguisher. These fixing points are on the right side wall of the cab, in the front area for machinemodells up to R954C, in the rear corner for machine modells R964C and above.

3-41 Possible locations for fixing the fire extinguisher

The fire extinguisher is mounted as an option; at delivery the machine is fitted with only at customer’s wish.

Note!

It is the responsibility of the owner of the machine to decide if it must be fitted with a fire extinguisher or not, considering the operating conditions and the regulations which apply in the country and at the point of use of the machine.

A kit for retrofit adaptation, suitable for the cab of Your machine, and comprising a fire extinguisher and its mounting bracket can be ordered any time in Your LIEBHERR customer support service.

Caution!

If Your machine is fitted with a fire extinguisher: always comply with the operating guide on the body of the extinguisher, make sure, all the inspections of the fire extinguisher which are prescribed by the regulations applicable to the operating place of the machine are accomplished.

3.2.10The heater and air conditioner

The cab is equipped with a heating and air conditioning system as standard. The heating and air conditioning system is used to heat, cool and ventilate the cab.