AS IEC 60601.2.22-2014 pdf Medical electrical equipment Part 2.22: Particular requirements for basic safety and essential performance of surgical, cosmetic, therapeutic and diagnostic laser equipment

Replacement: In the IEC 60601 series, particular standards may modify, replace or delete requirements contained in this standard as appropriate for the particular ME EQUIPMENT under consideration, and may add other BASIC SAFETY and ESSENTIAL PERFORMANCE requirements. A requirement of a particular standard takes priority over the General Standard. For brevity, IEC 60601-1 is referred to in this particular standard as the General Standard.
Collateral standards are referred to by their document number. The numbering of sections, clauses and subclauses of this particular standard corresponds to that of the General Standard or applicable collateral standard. The changes to the text of the General Standard are specified by the use of the following words: “Replacement” means that the clause or subclause of the General Standard or applicable collateral standard is replaced completely by the text of this particular standard. “Addition” means that the text of this particular standard is additional to the requirements of the General Standard or applicable collateral standard. “Amendment” means that the clause or subclause of the General Standard or applicable collateral standard is amended as indicated by the text of this particular standard. Subclauses or figures which are additional to those of the General Standard are numbered starting from 201.101, additional annexes are lettered AA, BB, etc., and additional items aa), bb), etc. Subclauses or figures which are additional to those of a collateral standard are numbered starting from 20x， where “x” is the number of the collateral standard, e.g. 202 for IEC 60601-1-2, 203 for IEC 60601-1-3, etc. The term “this standard” is used to make reference to the General Standard, any applicable collateral standards and this particular standard taken together.
Where liquid is used in LASER EQUIPMENT for cooling and where the liquid assumes the task of BASIC INSULATION to SUPPLY MAINS, the conductivity of the liquid shall be such that the leakage current values required in 8.9 of the general standard are not exceeded in NORMAL USE. The conductivity of the liquid shall be continuously monitored by the LASER EQUIPMENT. In case of leakage current exceeding the values required in 8.9 of the general standard as a result of increased liquid conductivity, the LASER EQUIPMENT shall be switched off automatically from the SUPPLY MAINS.