1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories (UL). Itis normative for the applicable
2、UL Product Certification Program(s); however, it is currently not part ofthe UL Standard(s) referenced below.Product Category (CCN): GPWVStandard Number: UL 507Edition Date: December 13, 1999Edition Number: 9Section / Paragraph Reference: Section 91.3.2DECISION:Additional Exception to Clause 91.3.2E
3、xception: Unguarded motor operated flaps / slats of rangehoods are not considered capable of causinginjury to persons (including exerting during operation a pinching or compression force on small body partssuch as fingers) if they comply with the following performance requirements.A force gauge shal
4、l be inserted at a flap / slat location as close as possible to the drive (if provided)associated with the moving part. The measured force applied by the moving part to the gauge shall beless than 15 lbf (66.7 N).If the moving part reverses direction before exerting a force in excess of 15 lbf (66.7
5、 N), the moving partshall reverse to a position:1) That is open to at least the position at which closing was initiated, or2) That is at least 1 in. (25.4 mm) more open than at the time the part reversed direction.Solid state circuitry controlling the reversing function shall comply with the Standar
6、d for Tests for SafetyRelated Controls Employing Solid State Devices, UL 991.RATIONALE FOR DECISION:The interpretation above is based upon basic pinching/compression guidelines within UL 325, theStandard for Door, Drapery, Gate, Louver, and Window Operators and Systems, and ASME A17.1, theSafety Cod
7、e for Elevators and Escalators.Copyright 2007 Underwriters Laboratories Inc.UL, in performing its functions in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certifi
8、cation Requirement Decisions are the opinion of Underwriters Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for t
9、he use of or reliance upon Certification Requirement Decisions by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement Decision is the current version and previously printed copies may be outdated.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis document is published as a service to ULs certification customersSTANDARD NUMBER: UL 507 -2-
