§278 携帯式の手持ち式及び／又は手動誘導式機械に関する補足要件

The requirements set out in section 2.2.1 apply to portable hand-held machinery and portable hand-guided machinery.

Portable hand-held machinery is machinery which is carried by the operator during use (with or without the aid of a harness).

Portable hand-guided machinery is portable machinery the weight of which is fully or partially supported, for example, on a work bench, on the material or workpiece being worked, on a floor or on the ground, the movement of which is guided by the operator's hands during use.

The categories of machinery concerned include, for example, portable hand-held and portable hand-guided power tools, gardening and forestry machinery. Portable

14159: 2002).

requirements.

machinery includes machinery driven by a mains or battery-powered electric motor, pneumatically powered machinery and machinery driven by an internal combustion engine.

The requirement set out in the first indent of section 2.2.1 is complementary to the general requirement relating to stability set out in section 1.3.1. The requirement for an adequate supporting surface is applicable, in particular, to portable hand-guided machinery that is in contact with a work bench, the material or the workpiece being worked, a floor or the ground during use.

Where its size permits, portable hand-held and hand-guided machinery must have at least two handles so that the stability of the machinery during use can be ensured by the operator using both hands. The handles shall be located and designed to ensure that the operator’s hands are kept out of the danger zone. The machinery shall be designed, as far as possible, in such a way as to discourage one-hand use. The positioning, dimensions and design of the handles must take account of ergonomic principles – see §181: comments on section 1.1.6.

The requirements set out in the second indent and in the second paragraph of section 2.2.1 are complementary to the general requirements relating to starting and stopping set out in sections 1.2.3 and 1.2.4.1. In general, it must be possible to start and stop the machinery without releasing the handles. These requirements can often be fulfilled, for example, by means of a hold-to-run trigger control device integrated into the handles.

The requirement set out in the third indent of section 2.2.1 is complementary to the general requirement set out in the sixth indent of section 1.2.2 relating to control devices. The requirement has two aims:

to prevent unintentional start-up of the machinery due to unintended contact with the start control device;

to ensure that the machinery does not continue to operate when the machinery is put down or if the operator accidentally releases the handles.

In order to fulfil this requirement, the start control device must, as a general rule, be of the hold-to-run type and be designed to avoid undue fatigue during use. It must be located, designed and, if necessary, protected so that it is not liable to be activated unintentionally when the machinery is grasped, picked up, moved, or put down. Where there remains a risk of the machinery being started unintentionally, additional measures may be necessary such as, for example, fitting an additional enabling device or a start control device requiring two independent actions.

The requirement set out in the last indent of section 2.2.1, relating to the visibility of the danger zone and of the action of the tool with the material being processed, aims to ensure that the operator has the means to ensure full control over the operation of the machinery.