Preface This is the fourth edition of CSA C22.2 No. 128, Vending machines. It is one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes previous editions published in 1995, 1990, and 1963. For general information on the Standards of the Canadian Electrical Code, Part II, see the preface of CAN/CSA-C22.2 No. 0, General Requirements ? Canadian Electrical Code, Part II. The major differences between this edition and the previous edition include a) the addition of new requirements to prevent fire/shock and mechanical hazards; b) new requirements for permanently-connected vending machines; c) a new requirement for wiring to external accessories; d) a new requirement for electronic protected motors; e) new requirements for water heaters; f) new requirements for transformers and power supplies; g) new requirements for protection against excessive pressure and pressure limiting devices; h) the addition of accelerated aging test requirements for gaskets and polymeric materials; and i) the addition of and revision to impact test requirements, as well as the addition of a spill test. Scope 1.1 This Standard applies to self-contained vending machines designed to be installed and used in commercial applications in nonhazardous locations in accordance with the Rules of the Canadian Electrical Code, Part I. 1.2 This Standard applies to both refrigerated and non-refrigerated vending machines rated 250 V or less, single-phase. 1.3 This Standard applies to vending machines designed for indoor or outdoor use. 1.4 This Standard also applies to self-contained coin, currency, or credit mechanisms, rated at not more than 250 V, single-phase, intended to be factory- or field-installed in vending machines. 1.5 The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only. 1.6 In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.