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1.1 This European Standard specifies safety and hygiene requirements to minimise the hazards which can arise during the commissioning, the use and the maintenance of mixing machines and their accessories intended to be used in sausage kitchens and industrial operations. This European Standard deals with all significant hazards, hazardous situations and events relevant to mixing machines, when they are used as intended and under conditions of misuse which are reasonably foreseeable by the manufacturer (see Clause 4).This European standard is not applicable to mixing machines which are manufactured before the date of publication of this European Standard by CEN. 1.2 This European Standard covers the following types of mixing machines: - Mixing machines with a tilting container, one or several mixing shafts - Mixing machines with a stationary mixing container, front face or bottom discharge opening - Mixing machines with a container and loading device - Mixing machines with a container, mixing shaft(s), screw conveyor and loading device The mixing machines are constructed of a machine frame, a trough-shaped mixing container, one or several mixing shafts, an associated drive and electrical, hydraulic and pneumatic components, depending on machine type. The mixing shaft can be equipped with wings, screws, rods, paddles or the like. Mixing machines may be equipped e. g. with - cover over the top of the mixing container, - pipe connections for gases, steam, water or vacuum, - protective hood over the front face discharge opening, - lifting devices for mixing shaft, - loading device, - screw conveyor at the discharge opening.