Replace the existing text of Clause 1 with the following: This clause of Part 1 is applicable, except as follows: Replacement of the third paragraph: The rated voltage is not more than 250 V for single-phase a.c. or d.c. tools, and 480 V for three-phase a.c. tools. Addition: This document applies to transportable wall saws guided by a track guiding system intended for dry cutting or to be connected to a liquid system for cutting concrete, stone or similar material by means of a diamond wheel. The rated speed of the diamond wheel does not exceed a peripheral speed of 100 m/s at rated capacity. This document does not apply to transportable wall saws with a design that allows an automatic change of the cutting direction without user intervention before any change of the cutting direction. This document does not apply to transportable wall saws that employ hydraulic systems. This document does not apply to hand-held cut-off machines. NOTE 101 Hand-held cut-off machines will be covered by a future part of IEC 62841-2. This document covers all significant hazards, hazardous situations or hazardous events relevant for tools covered by this standard. NOTE Z101 Essential requirements not mentioned in Table ZZ.1 are deemed to be not applicable, because the corresponding hazards are either not relevant for tools covered by this standard or do not require specific action by the designer.