2.1 SAFETY INSTRUCTIONS SAFETY l The fastening of loads and the instructing of crane operators should be entrusted to experienced persons only. The mar- shaller giving the instructions must be within sight or sound of the operator. l For carrying out overhead assembly work always use spe- cially designed or otherwise safety-oriented ladders and working platforms. Never use machine parts as a climbing aid. Wear a safety harness when carrying out maintenance work at greater heights. Keep all handles, steps, handrails, platforms, landings and ladders free from dirt, snow and ice.
l Clean the machine, especially connections and threaded unions, of any traces of oil, fuel or preservatives before carry- ing out maintenance/repair. Never use aggressive detergents. Use lint-free cleaning rags. l Before cleaning the machine with water, steam jet (high-pres- sure cleaning) or detergents, cover or tape up all openings which - for safety and functional reasons - must be protected against water, steam or detergent penetration. Special care must be taken with electric motors and switchgear cabinets.
l Ensure during cleaning of the machine that the temperature sensors of the fire-warning and fire-fighting systems do not come into contact with hot cleaning agents as this might acti- vate the fire-fighting system. l After cleaning, remove all covers and tapes applied for that purpose. l After cleaning, examine all fuel, lubricant, and hydraulic fluid lines for leaks, loose connections, chafe marks and damage. Any defects found must be rectified without delay. l Always tighten any screwed connections that have been loos- ened during maintenance and repair.
l Any safety devices removed for set-up, maintenance or repair purposes must be refitted and checked immediately upon completion of the maintenance and repair work. l Ensure that all consumables and replaced parts are disposed of safely and with minimum environmental impact. 22