2 Safety • The operator shall ensure that the operation and cleaning of the machine/plant is exclusively carried out by skilled and trained personnel. • The operator shall ensure that all maintenance and repair work shall only be carried out by skilled and trained personnel. 98 2. 4 Staff-related requirements Warning: Danger of personal injuries if handled by insufficiently qualified staff! Improper handling may cause severe personal injuries and damage to property. • Actions requiring special skills have to be carried out only by the personnel designated in the appropriate sections of these instructions. • Keep unqualified personnel away from hazard areas.