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.
UL 664 BULLETIN-2010 history
2010UL 664 BULLETIN-2010 UL Standard for Safety Commercial Dry-Cleaning Machines (Type IV)