2 Safety 100 Danger! Lethal hazard of shock current and electric shock! Any contact with hazardous live components presents a direct lethal hazard. Da mages of the insulation or individual components present a potential lethal hazard. • In the event of any damage to the insulation, immediately disconnect the voltage supply and initiate the appropriate repair work. • Any work on the electrical plant has to be carried out by skilled and trained electricians only. • Before commencing your work on the electrical system, disconnect it from the mains supply and check that it no longer carries any live voltages.
• Prior to conducting any maintenance, cleaning or repair work, disconnect the mains supply and secure it against inadvertent switching on. • Do not short-circuit or make fuses inoperable.