2.1 SAFETY INSTRUCTIONS SAFETY 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. 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.
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. 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.
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. After cleaning, remove all covers and tapes applied for that purpose. 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. Always tighten any screwed connections that have been loos- ened during maintenance and repair.
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. Ensure that all consumables and replaced parts are disposed of safely and with minimum environmental impact. 22