2.1 SAFETY INSTRUCTIONS SAFETY GAS, DUST, STEAM AND SMOKE l Operate internal combustion engines and fuel operated heat- ing systems only on adequately ventilated premises. Before starting the machine on enclosed premises, make sure that there is sufficient ventilation. Observe the regulations in force at the respective site. l Carry out welding, flame-cutting and grinding work on the machine only if this has been expressly authorized, as there may be a risk of explosion and fire. l Special care must be taken before welding, flame-cutting and grinding operations are carried out on the counterweight.
The filling of the counterweight chambers can create explosive gases which will accumulate in the chambers of the counter- weight. These gases must be expelled before welding, flame- cutting and grinding operations are carried out on the coun- terweight. Danger of explosion. Follow the instructions given in PARTS & SERVICE NEWS No. AH04518 for expelling the gases from the counterweight chambers. l Before carrying out welding, flame-cutting and grinding oper- ations, clean the machine and its surroundings from dust and other inflammable substances and make sure that the pre- mises are adequately ventilated (risk of explosion).
HYDRAULIC AND PNEUMATIC EQUIPMENT l Work on hydraulic equipment may be carried out only by per- sons having special knowledge and experience in hydraulic systems. l Check all lines, hoses and screwed connections regularly for leaks and obvious damage. Repair damage immediately. Splashed oil may cause injury and fire. l Depressurize all system sections and pressure pipes (hydraulic system, compressed-air system) to be removed in accordance with the specific instructions for the unit con- cerned before carrying out any repair work. l Hydraulic and compressed-air lines must be laid and fitted properly. Ensure that no connections are interchanged.
The fittings, lengths and quality of the hoses must comply with the technical requirements. NOISE l During operation, all sound baffles must be closed. l Always wear the prescribed ear protectors. 24