UL Standard for Safety Commercial Dry-Cleaning Machines (Type IV)
|Publication Date:||5 December 2003|
These requirements cover dry-cleaning machines for use as or with Type IV systems utilizing Class IV solvents as defined in the Standard for Dry-Cleaning Plants, NFPA 32. The machines investigated under these requirements are intended for use with solvents or liquids classed as nonflammable or as having a maximum numerical fire hazard rating of 5, in accordance with the Standard for Tests for Comparative Flammability of Liquids, UL 340. These requirements cover dry-cleaning machines that are rated 600 V or less and that employ no universal motor rated more than 250 V. These machines are for use in ordinary locations in accordance with the National Electrical Code, NFPA 70.
These requirements cover machines intended for use in commercial cleaning establishments, in which the machine or system ordinarily is not accessible to the general public while in operation.
These requirements do not cover machines intended for use in Type V operations, in which the machine or system is accessible to or used by the general public.
In these requirements, a dry-cleaning machine is considered to be a unit (usually not including any associated equipment) intended to clean fabrics only, or to clean and damp-dry fabrics. If a unit is designated as a dry-cleaning system, all the elements for the cleaning and complete drying process are considered as a whole. In either case, all elements of a machine or system and commercially used accessories and associated equipment, such as cleaning-liquid transfer pumps, reclaimers, air compressors, drying tumblers, and the like, are investigated under these requirements and under such additional requirements as are applicable to the element or accessory under consideration. An accessory is covered either as an integral part of a dry-cleaning system or as an individually installed, but associated, component.