UL 1450:2019 Motor-Operated Air Compressors, Vacuum Pumps, and Painting Equipment.
1.1 These requirements cover household and commercial air compressors, vacuum pumps, inflators (both compressor-type and blower-type inflators), paint sprayers, paint mixers, and paint pigment dispensers intended for indoor or outdoor use or both in accordance with the National Electrical Code, ANSI/NFPA 70. These requirements also cover motor-operated air compressors intended for use with sprinkler systems in accordance with the Standard for Installation of Sprinkler Systems, NFPA 13, and the National Electrical Code, ANSI/N FPA 70.
1.2 These requirements do not cover products:
a) Rated more than 600 V,
b) Employing a universal motor rated more than 250 V, or
c) Intended for installation and use in a hazardous location.
1.3 These requirements do not cover medical and dental products; products intended to be used in heating, air conditioning, or refrigeration systems; paint heaters; electrostatic paint spraying products; or other products covered by separate requirements.
1.4 These requirements do not cover pneumatic tools and accessories that are covered by the Outline for Investigation for Portable Pneumatic Tools, Subject 7700-1.
1.5 These requirements do not cover industrial compressors that are primarily supplied to an individual customer specification with regard to pressure, flow, electrical supply, or optional equipment.
2.1 For the purpose of this standard the following definitions apply.
2.2 AUTOMATICALLY CONTROLLED PRODUCT — A product is considered to be automatically controlled under any one or more of the following conditions if:
a) The repeated starting of the product, beyond one complete predetermined cycle of operation to the point where some form of limit switch opens the circuit, is independent of any manual control.
b) During any single predetermined cycle of operation, the motor is caused to stop and restart one or more times.
c) Upon energizing the product, the initial starting of the motor may be intentionally delayed beyond normal, conventional starting.
d) During any single predetermined cycle of operation, automatic changing of the mechanical load may reduce the motor speed sufficiently to reestablish starting-winding connections to the supply circuit.
2.3 EQUIPMENT, FIXED — Equipment that is intended for permanent connection to the electrical supply. This type of equipment may be physically secured to the supporting surface.
2.4 EQUIPMENT, MOVABLE — Cord-connected equipment that is intended to be moved from location to location during and in between performing its intended function. This type of equipment is not supported by the user, but supported by the ground or by other supporting surface during use.UL 1450 pdf download.