Prevent any working movements, which could tip the machine over. If the excavator begins to tip or slip on a grade, immediately lower the attachment and load to the ground and turn the excavator facing downhill. If possible, always operate the excavator with the attachment positioned uphill or downhill, never sideways. Please refer to your LIEBHERR dealer if special teeth for heavy-duty or special applications are required. Do not attach too large bucket or bucket 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.
Always travel slowly on rough or slippery ground and on slopes, and on loose soils. With the 2x45° offset articulation, the offset position may only be employed if the working tool or the attachment does not touch the material. Always travel downhill at permissible speed, so you dont loose control over the machine. The engine must run at nominal speed, use only the foot pedals to brake and slow down the machine. Never shift during down hill travel, always shift to a lower gear before travelling downhill. Operation of the offset articulation to drill into the material is not permitted. Do not lift the machine during operation. Should this happen, lower the machine slowly back to the ground.
Load an occupied truck only if all safety requirements are fulfilled, notably in order to protect the truck operator. Do not let the machine fall heavily on the ground and do not hold it back with the hydraulics. This would damage the machine. For demolition work, clearing, crane operation, etc. always use the appropriate protection device designed for this specific application. During operation with the attachment it is forbidden to raise the machine with the dozing blade (e.g. carving at the ceiling when tunnelling). If operating in visually obstructed terrain or whenever necessary, have another person guide you. Always have only one person signal you.
The hydraulic hammer must be selected with particular care. When using a hydraulic hammer not permitted by LIEBHERR, steel structures or the other machine components can become damaged. Allow only experienced persons to attach loads or to guide operators. The guide must be visible by the operator and / or must be in voice contact with him. Before beginning breaking tasks, position the machine on firm and level ground. Depending on the attachment combination, it is possible for the bucket teeth to hit the cab, the cab protection or the boom cylinders. Be very careful when the bucket teeth get in this range to prevent any damage.
Use a hydraulic hammer designed exclusively for breaking stone, concrete and other breakable materials. Only operate the hydraulic hammer in the longitudinal direction of the machine and with the windshield closed or with a front protective grid. In case of a thunderstorm : lower the attachment to the ground and if possible anchor the digging tool into the soil. Ensure during hammer operation that no cylinder is entirely extended or retracted and that the stick is not in the vertical position. leave the cab and move away from the machine before the storm breaks out. Otherwise, you must stop the excavator, turn off the radio and keep inside the closed cab until the end of the storm.
In order to avoid damages to the machine, try not to break stone or concrete while performing retraction and extension motions of the hydraulic hammer. Do not apply the hydraulic hammer uninterrupted for more than 15 secs. at a 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. Auxiliary control units can have various functions. Always check their functions when starting up the machine. Stop the swinging motion of the uppercarriage when lowering the attachment into a ditch without striking the attachment on the ditch walls.
Do not use the drop force of the hydraulic hammer 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. Inspect the machine for damage if the attachment has been swung into a wall or any other obstacles. Applications in which the attachment is to be used to strike the material being extracted are not permitted, even when working in a longitudinal direction. Do not use the hydraulic hammer to lift objects. Repeated strikes against an object leads to damage to the steel structures and machine components. 2.6