1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(
2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): ZCTT/ZCTT7Standard Number: UL 2157Standard Title: Standard for Electric Clothes Washing Machines and ExtractorsEdition Date: November 2, 2015Edition Number: 3Section / Paragraph Reference: 6.9Subject:
3、 Clarification of the Accessibility Requirements for the Bottom of anApplianceDECISION:6.9 The requirements in Clauses 6.1 and 6.2 apply to the back of a freestanding appliance and to the backand sides of a recessed appliance. They do not apply to the bottom of a freestanding or recessedappliance if
4、 the front, sides, and back of the appliance extend substantially to the surface upon which theappliance rests. For the bottom of a freestanding or recessed appliance, if the front, sides, and back ofthe appliance can be positioned no more than 38.1 mm above the surface upon which the appliance rest
5、s,the tip of the probe, illustrated in Figure 1, shall be inserted up to 150 mm inside the plane of the openingcreated between the bottom edge of the appliance and the supporting surface. If the distance betweenthe bottom edge of the appliance and supporting surface is greater than 38.1 mm accessibi
6、lity through theopening created between the bottom of the appliance and the supporting surface shall be evaluated inaccordance with Table 1.RATIONALE FOR DECISION:This Certification Requirement Decision is intended to clarify the accessibility requirements for the bottomof an appliance, and document
7、s present practice in the application of these requirements.Accessibility via the bottom of the appliance to parts that may present a risk of fire, electric shock or injuryto persons is dependent upon the distance from the bottom edge of the front, sides and back of theclothes washer to the supporti
8、ng surface. Clause 6.9 presently uses the phrase “extends substantially tothe floor”, which is not clear and may lead to inconsistent application of this requirements. This clarificationto Clause 6.9 is intended to: Clarify the maximum distance between the bottom edge of the appliance and the suppor
9、tingsurface that is considered to be extended substantially to the floor; Address accessibility of live or moving parts near the outer edges of the bottom by applyingthe accessibility probe up to 150 mm from the plane of the opening, and Define the applicable accessibility requirements when the maxi
10、mum distance is exceeded byreferencing Table 1.Copyright 2018 UL LLCUL LLC, 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. Certificati
11、on Requirement Decisions are the opinion of UL LLC. in practically applying theUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULrequirements of the standard. They do not represent formal interpretations of the standard underAmerican National St
12、andards Institute (ANSI) processes. UL LLC shall not be responsible to anyone forthe use of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur anyobligation or liability for damages, including consequential damages, arising out of or in connection withthe use or reliance upon Certification Requirement Decisions. The electronic version of the CertificationRequirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 2157 -2-
