1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1240 Electric Commercial Clothes-Drying EquipmentUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORI
2、ZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Electric Commercial Clothes-Drying Equipment, UL 1240 Fourth Edition, Dated October 4, 2005 Summary of Topics The revisions dated October 17, 2012 were issued to incorporate the following revised requi
3、rements: Exception to 49.22 for Non-tumbling Dryers Correction of a Typographical Error in 33.4 Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin
4、 and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated March 30, 2012. All rights reserved. No part of this publicat
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7、se this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for
8、Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system
9、. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have
10、a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. OCTOBER 17, 2012 UL 1240 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 17, 2012 UL 1240 tr2 No Text on This PageUL COP
11、YRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL October 4, 2005 (Title Page Reprinted: October 17, 2012) 1 UL 1240 Standard for Electric Commercial Clothes-Drying Equipment Prior to the rst edition, the requirements for the products covered by thi
12、s Standard were included in the Standard for Electric Home-Laundry Equipment, UL 560. The rst edition was titled Standard for Electric Coin-Operated Commercial Clothes-Drying Equipment. First Edition February, 1974 Second Edition August, 1979 Third Edition April, 1994 Fourth Edition October 4, 2005
13、This ANSI/UL Standard for Safety consists of the Fourth Edition including revisions through October 17, 2012. The most recent designation of ANSI/UL 1240 as an American National Standard (ANSI) occurred on October 17, 2012. ANSI approval for a standard does not include the Cover Page, Transmittal Pa
14、ges, Title Page, or effective date information. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safet
15、y are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2012 UNDERWRITERS LABORATORIES INC. ANSI/
16、UL 1240-2012UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 4, 2005 ELECTRIC COMMERCIAL CLOTHES-DRYING EQUIPMENT - UL 1240 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT
17、PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 References .5 3 Glossary .5 4 Components 6 5 Units of Measurement .7 6 Field-Attached Accessories .7 CONSTRUCTION 7 Frame and Enclosure 8 8 Accessibility of Uninsulated Live Parts and Film-Coated Wire .13 9 Mechanical Assembly 18 10 Protection Ag
18、ainst Corrosion .19 11 Power-Supply Connections 19 11.1 General .19 11.2 Permanently connected appliances .19 11.3 For connection of grounded power-supply conductor .21 11.4 For connection of equipment-grounding conductor 21 11.5 Cord-connected appliances 22 12 Internal Wiring 23 13 Live Parts 24 14
19、 Electrical Insulation .25 15 Thermal Insulation 25 16 Motors .26 17 Overcurrent Protection 26 18 Lampholders .27 19 Receptacles 27 20 Switches .28 21 Heating Elements .28 22 Automatic Temperature Controls 29 23 Capacitors .30 24 Spacings 30 25 Grounding .32 PROTECTION AGAINST RISK OF INJURY TO PERS
20、ONS 26 Automatic Restarting of Motor 33 27 Stability 34 27.1 Freestanding appliances 34 27.2 Appliance stands .34 28 Sharp Edges, Projections, and Moving Parts .35 29 Parts Subject To Pressure .35 29.1 Pressure vessels .35 29.2 Pressure relief devices 36 30 Contact with Rotating Tumbler .37 OCTOBER
21、4, 2005 ELECTRIC COMMERCIAL CLOTHES-DRYING EQUIPMENT - UL 1240 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 31 General 38 32 Input Test 38 33 Starting Current Test 39 34 Insulation Resistance Test .40 35 Dielectric Voltage Wi
22、thstand Test .40 36 Temperature Test .40 37 Abnormal Operation Test 44 38 Automatic Temperature Control Test 44 39 Test for Switches .45 40 Polymeric Materials Test .46 40.1 General .46 40.2 Mold stress-relief distortion test 47 40.3 Horizontal burning test; HB 47 40.4 Flammability test .48 40.5 Res
23、istance to impact test 48 40.6 Crushing resistance test .49 40.7 Hot-wire ignition test 49 40.8 Thermal aging test .49 40.9 Volume resistivity test .50 40.10 Enclosure ammability test - large mass consideration .50 40.11 High current arc resistance to ignition test (HAI) 50 41 Overload Protection Te
24、st 51 42 Strain Relief Test .53 43 Permanence of Marking Test .53 44 Hydrostatic Pressure Test .53 MANUFACTURING AND PRODUCTION TESTS 45 Grounding Continuity Test .54 46 Dielectric Voltage Withstand Test .54 RATING 47 General 56 MARKING 48 General 56 49 Details .57 INSTALLATION INSTRUCTIONS 50 Gener
25、al 62 APPENDIX A Standards for ComponentsA1 OCTOBER 4, 2005 ELECTRIC COMMERCIAL CLOTHES-DRYING EQUIPMENT - UL 1240 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover electric commercial, indust
26、rial, and institutional clothes-drying equipment intended for use in accordance with the National Electrical Code, NFPA 70. Equipment covered by this Standard is not intended for use by the general public, but only by trained or supervised personnel. 1.2 These requirements do not cover coin-operated
27、 clothes-drying equipment, atirons, ironing machines, water heaters, water softeners, dry-cleaning machines, garment-nishing machines, clothes washers, or other equipment covered by requirements separate from this standard. 1.3 Appliances and eld-attached accessories including those that utilize som
28、e other source of energy such as gas or steam in addition to electric energy are investigated under these requirements and under such additional requirements as are applicable to the appliance under consideration. 2 References 2.1 Any undated reference to a code or standard appearing in the requirem
29、ents of this standard shall be interpreted as referring to the latest edition of that code or standard. 2.2 In the following text, a requirement that applies only to a specic class of equipment is so identied by a specic reference in that requirement to the class or classes of appliances involved. A
30、bsence of such specic reference or use of the term appliance indicates that the requirement applies to all classes of appliances unless the context indicates otherwise. 2.3 In the following text, a specic requirement pertaining to a particular appliance takes precedence over a corresponding requirem
31、ent specied as being applicable to all appliances. 3 Glossary 3.1 APPLIANCE, AUTOMATIC An appliance is considered to be automatically controlled under one or more of the following conditions: a) If repeated starting of the appliance, beyond one complete predetermined cycle of operation, to the point
32、 where some form of limit switch opens the circuit is independent of any manual control. b) If, during any single predetermined cycle of operation, the motor is caused to stop and restart one or more times. c) If, upon energizing the appliance, the initial starting of the motor may be intentionally
33、delayed beyond normal, conventional starting. d) If, 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. 3.2 APPLIANCE, RECESSED An appliance intended
34、to: a) Be supported by the oor, and OCTOBER 4, 2005 ELECTRIC COMMERCIAL CLOTHES-DRYING EQUIPMENT - UL 1240 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL b) Sit immediately adjacent to a wall in the rear or to sit immediately adjacent to a
35、 wall, a cabinet, or another appliance on each side. If the construction permits, a counter top may cover the appliance and adjacent cabinets and appliances. A recessed appliance is not intended for permanent attachment to the building structure or to adjacent cabinets or appliances. 3.3 APPLIANCE,
36、SEMI-AUTOMATIC An appliance employing two or more motors is considered to be semiautomatically controlled if: a) One or more motors are controlled in accordance with any of the conditions specied in 3.1, and b) At least one motor is not controlled in accordance with any of the conditions specied in
37、3.1. 3.4 APPLIANCE, WALL-INSERT An appliance intended to be mounted permanently in a wall or other vertical surface of a building or cabinet. 3.5 ENCLOSURE The part of the product that: a) Reduces the accessibility of all or any parts of the product that may otherwise result in a risk of electric sh
38、ock or injury to persons; or b) Retards propagation of ame initiated by electrical disturbances that may occur within the product. 3.6 PART, DECORATIVE A part used for ornamental purposes only and not as an enclosure or as insulation of electrically live parts. 3.7 PART, FUNCTIONAL A part that is ne
39、cessary for the proper functioning of the product, and that is used in such a way that deterioration or breakage of the part would result in a risk of re, electric shock, or injury to persons. 4 Components 4.1 Except as indicated in 4.2, a component of a product covered by this standard shall comply
40、 with the requirements for that component. See Appendix A for a list of standards covering components generally used in the appliances covered by this standard. 4.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the appli
41、cation of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. OCTOBER 4, 2005 ELECTRIC COMMERCIAL CLOTHES-DRYING EQUIPMENT - UL 1240 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4
42、.3 A component shall be used in accordance with its rating established for the intended conditions of use. 4.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temp
43、eratures not exceeding specied limits, and shall be used only under those specic conditions. 5 Units of Measurement 5.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 6 Field-Attached Accessories 6.1 The requirements in 6.2 6.
44、8 apply to accessories intended for installation on or connection to an appliance for the purpose of modifying or supplementing the functions of the appliance or accessory. 6.2 An appliance that has provision for the use of an accessory to be attached in the eld shall be constructed so that the use
45、of the accessory will not introduce a risk of re, electric shock, or injury to persons. 6.3 The installation of an accessory by the user shall be restricted to an arrangement that can be accomplished by means of receptacles and plug-in connectors of other than the general-use or specic-purpose type.
46、 6.4 The installation of an accessory by a qualied electrician or serviceman is acceptable if connections are made to existing terminals by use of wire connectors. 6.5 Accessories intended to be eld wired shall be provided with a means for connection to the power supply circuit of the appliance as s
47、pecied in 11.1.1. 6.6 Any installation that requires eld rearrangement of components or wiring, cutting or splicing of wiring, or soldering of connections is not acceptable. 6.7 As part of the investigation, an accessory shall be tested and trial-installed to determine that installation is feasible,
48、 that the instructions are detailed and correct, and that the use of the accessory will not introduce a risk of re, electric shock, or injury to persons. 6.8 An appliance that has provision for the eld connection of an accessory and a eld-attached accessory shall be marked as specied in 49.1 and 49.
49、31 49.33, as applicable. OCTOBER 4, 2005 ELECTRIC COMMERCIAL CLOTHES-DRYING EQUIPMENT - UL 1240 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 7 Frame and Enclosure 7.1 An appliance shall be formed and assembled so that it will have the strength and rigidity necessary to resist the abuses to which it may be subjected, without increasing the risk of re, electric shock, or injury to persons due to tota
