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1、1 SUBJECT 2964 OUTLINE OF INVESTIGATION FOR AUTOMOTIVE REFRIGERANT RECOVERY/REUSE EQUIPMENT FOR REFRIGERANTS OTHER THAN R12 OR R134A Issue Number: 2 NOVEMBER 2,1999 COPYRIGHT Q 1999 UNDERWRITERS LABORATORIES INC. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=
2、North Carolina State University/5618801100 Not for Resale, 10/22/2006 02:39:52 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*UL SUBJECT 29b4-ENGL 1999 I 9275795 0802839 533 2 SUBJECT 2964 NOVEMBER 2,1999 No Text on This Page Copyright Underwriters Laboratories Inc. Pr
3、ovided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/22/2006 02:39:52 MDTNo reproduction or networking permitted without license from IHS -,-,- STDOUL SUBJECT 2964-ENGL 1777 H 9275775 O802820 255 IB NOVEMBER 2.1999 SUBJECT 2964 3 CONTENTS FOREWORD
4、 4 INTRODUCTION 1 Scope . 5 2 General 5 2.1 Units of measurement . 5 2.2 Reference . 5 2.3 Glossary 6 CONSTRUCTION AND PERFORMANCE 3 General Requirements . 7 4 Test Description 9 5 Refrigerant Purity Specifications . 11 MARKING AND OPERATING INSTRUCTIONS 6 Marking . 11 7 Operating Instructions 12 Co
5、pyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/22/2006 02:39:52 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-UL SUBJECT 2964-ENGL 1999 m 9275795 0802821 191 4 SUBJECT
6、2964 NOVEMBER 2,1999 FOREWORD A. This Outline of Investigation contains basic requirements for products covered by Underwriters Laboratories Inc. (UL) under its Follow-Up Service for this category within the limitations given below and in the Scope section of this Outline of Investigation. They are
7、subject to revision as further experience and investigation may show is necessary or desirable. B. The observance of these requirements by a manufacturer is one of the conditions of the continued coverage of the manufacturers product. C. A product which complies with the text of this Outline of Inve
8、stigation will not necessarily be judged to comply with the Outline of Investigation if, when examined and tested, it is found to have other features which impair the level of safety contemplated by these requirements. D. A product employing materials or having forms of construction which conflict w
9、ith specific requirements of the Outline of Investigation cannot be judged to comply with the Outline of Investigation. A product employing materials or having forms of construction not addressed by this Outline of Investigation may be examined and tested according to the intent of the requirements
10、and, if found to meet the intent of this Outline of Investigation, may be judged to comply with the Outline of Investigation. E. UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. The
11、 opinions and findings of UL represent its professional judgement given with due consideration to the necessary limitations of practical operation and state of the art at the time the Outline of Investigation is processed. UL shall not be responsible to anyone for the use of or reliance upon this Ou
12、tline of Investigation by anyone. UL shall not incur any obligation or liability for damages, including consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Outline of Investigation. F. Many tests required by the Outline of Investigations of U
13、L are inherently hazardous and adequate safeguards for personnel and property shall be employed in conducting such tests. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/22/2006 02:39:52 MDTNo reprod
14、uction or networking permitted without license from IHS -,-,- STDmUL SUBJECT 2964-ENGL 1999 9275795 0802822 028 W NOVEMBER 2,1999 SUBJECT 2964 5 INTRODUCTION 1 Scope 1.1 This Outline covers recoveryheuse equipment for a specific refrigerant other than R12 or R134a. The specific refrigerants include
15、EPA SNAP accepted automotive refrigerants. This Outline covers recoveryheuse equipment for a refrigerant that has been directly removed from a mobile air-conditioning system and is intended for reuse in the same mobile air-conditioning system or in a mobile air-conditioning system that is under the
16、control and direction of the same owner (such as a fleet). 1.2 This Outline applies to equipment used to service automobiles, light trucks, and other vehicles with similar mobile air-conditioning systems. 1.3 A product that contains features, characteristics, components, materials or systems new or
17、different from those covered by the requirements in this Outline, and that involves a risk of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements to determine that the level of safety as originally anticipated by the i
18、ntent of this Outline is maintained. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this Outline shall not be judged to comply with this Outline. Where appropriate, revision of requirements shall be proposed and adopt
19、ed in conformance with the methods employed for development, revision, and implementation of this Outline. 2 General 2.1 Units of measurement 2.1.1 When a value for measurement is followed by a value in other units in parentheses, the first stated value is the requirement. 2.2 Reference 2.2.1 Applic
20、able Documents - The following publications are specified in this Outline. Any updated reference to a code or standard appearing in the requirements of this Outline shall be interpreted as referring to the latest edition of that code or standard. Copyright Underwriters Laboratories Inc. Provided by
21、IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/22/2006 02:39:52 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-UL SUBJECT 2964-ENGL 1999 9235795 0802823 Tb4 6 SUBJECT 2964 NOVEMBER 2,1999 a) CGA Publications: CGA Pamphle
22、t S-1.1 - Pressure Relief Device Standard, Part 1 - Cylinders for Compressed Gases Available from: CGA 1235 Jefferson Davis Highway Arlington, VA 22202 b) DOT Publications: DOT Standard, CFR Title 49, Section 173.304 - Shippers - General Requirements for Shipments and Packaging Available from: Super
23、intendent of Documents US. Government Printing Office Washington, DC 20402 c) UL Publications: UL 984 - Hermetic Refrigerant Motor-Compressors Subject 984A - Compatibility of Insulating Materials and RefrigeranffOil for Use in Hermetic Refrigerant Motor-Compressors UL 1769 - Cylinder Valves UL 1963
24、- Refrigerant Recovery/Recycling Equipment UL 2182 - Refrigerants Available from: Global Engineering Documents 15 Inverness Way East Englewood, CO 801 12 2 . 3 Glossary 2.3.1 For the purpose of this Outline, the following definitions apply. 2.3.2 RECOVERY/REUSE (WR) UNIT - A single piece of equipmen
25、t that performs both functions of recovery and reuse of refrigerant from mobile air-conditioning systems. The equipment is not prohibited from recharging the refrigerant back into the same serviced system or different vehicle air-conditioning systems under the same ownershipa. a i.e., multiple vehic
26、les owned by the same individual or organization 2.3.3 NOMINAL FORMULATION - The bulk manufactured composition of the refrigerant which shall be represented by the liquid composition in a cylinder which is 80 percent full at standard pressure and ambient temperature. Copyright Underwriters Laborator
27、ies Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/22/2006 02:39:52 MDTNo reproduction or networking permitted without license from IHS -,-,- STDOUL SUBJECT 29b4-ENGL 1777 7275795 0802824 qTO NOVEMBER 2,1999 SUBJECT 2964 7 CONSTRUCTIO
28、N AND PERFORMANCE 3 General Requirements 3.1 The equipment shall comply with the construction requirements in UL 1963, Standard for Refrigerant Recovery/Recycling Equipment. 3.2 Compatibility of motor insulation systems employed in hermetic motor compressors shall be evaluated in accordance with the
29、 Standard for Hermetic Refrigerant Motor-Compressors, UL 984/CSA No. 140.2, or the Outline of Investigation for Compatibility of Insulating Materials and RefrigeranVOil for Use in Hermetic Refrigerant Motor-Compressors, Subject 984A. 3.3 The refrigerant shall have: a) No limits of flammability, and
30、b) Shall not have an autoignition temperature greater than 750C (1382F) in accordance with the Standard for Refrigerants, UL 2182. 3.4 The equipment shall be capable of removing and processing refrigerants from mobile air-conditioning systems to the purity level specified in Section 5. 3.5 The equip
31、ment shall be suitable for use in an automotive service garage environment and be capable of continuous operation in ambient temperatures from 10C (50F) to 49C (1 20F). 3.6 The equipment shall be provided with a moisture sight-glass(es) or other moisture detection means that reliably indicate when t
32、he moisture in the refrigerant meets or exceeds the minimum purity level specified in Section 5 and reliably indicate when the filter/dryer(s) needs replacement. 3.7 The equipment shall employ an oil separator at the equipment inlet, incorporating a graduated scale with marked increments of 1 ounce
33、(30 mi) or smaller, or an equivalent means of measuring the amount of oil removed. 3.8 The equipment shall incorporate a desiccant package that is intended to be replaced when saturated with moisture and whose acid capacity is at least 5 percent by weight of total system dry desiccant. The automotiv
34、e equipment is not prohibited from employing an alternate acid scavenging means when it is proven to provide equivalent or better removal of acid and equivalent reliability in service to that provided by an acid-desiccant package. 3.9 The equipment shall contain an in-line filter with a 15 micron po
35、rosity or less. 3.1 O The equipment shall be provided with the necessary hoses for connection in the intended manner to the equipment being serviced. These hoses shall be no longer than 8 fi (2.4 m) and shall be provided with shutoff devices within 12 in (305 mm) of the ends. The shutoff device shal
36、l prevent refrigerant flow when the hose is not connected. 3.11 Equipment shall have a storage section to receive refrigerant during a recovery operation. This storage section shall have an automatic means to cease the recovery operation when 80 percent of the volume of the storage section contains
37、liquid refrigerant at 70F (21.1 OC). There shall be an automatic means, such as a shutoff, to limit migrating liquid refrigerant from occupying more than 80 percent of the volume of the storage section(s) at 70F (21 .l0C) upon termination of all recovery operation including all rapid liquid recovery
38、 methods. Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 10/22/2006 02:39:52 MDTNo reproduction or networking permitted without license from IHS -,-,- STD.UL SUBJECT 2964-ENGL 1999 9275795 0802825 837
39、8 SUBJECT 2964 NOVEMBER 2,1999 3.12 All flexible hoses shall be evaluated using the refrigerant(s) intended to be processed by the R/R equipment in accordance with the test method for the automotive only requirements in clauses 46.3 - 46.19 of the second edition of UL 1963, Standard for Refrigerant
40、Recovery/Recycling Equipment. 3.13 The equipment shall incorporate unique service fittings on the inlet and outlet service ports and on the service hoses for the specific type of refrigerant intended to be recycled. 3.14 R/R equipment shall employ a permanently attached (welded in or equivalent) sto
41、rage container, or a permanently plumbed-in (i.e., with welded, brazed or soldered interconnecting refrigerant tubing) storage container that is secured within or to the cabinet of the WR unit. 3.15 The FUR equipment shall be compatible with leak detector dye that is present in some refrigerants. 3.
42、16 The WR equipment shall either automatically purge noncondensables or incorporate a means to reliably indicate that noncondensables are present in the refrigerant storage section. Noncondensable gas removal shall be a part of the test procedure noted in clause 4.3 and shall be included in the oper
43、ating instructions. Noncondensable gas removal shall be accomplished within 30 minutes after the recovery operation is complete and prior to using the recovered refrigerant for system charging. 3.17 Components such as pressure gauges, thermometers, temperature strips, temperature-pressure charts, th
44、ermistors and the like, that are required for noncondensable gas purging on R/R equipment shall be permanently mounted on the unit enclosure and/or storage cylinder. 3.18 During the recovery operation, the R/R equipment shall be capable of evacuating the system to a minimum of 4 in (102 mm) of mercu
45、ry (adjusted to altitude). 3.19 The WR equipment shall be constructed so that refrigerant for recharging is taken from the liquid phase. 3.20 The WR equipment shall be capable of purging noncondensables to no more than 5 percent by weight of the total contaminated refrigerant removed from the mobile
46、 air-conditioning system. The 5 percent by weight includes all contaminated refrigerant removed during noncondensable gas purging and during oil removal. 3.21 Refrigerant storage cylinders that receive the refrigerant during the recovery operation, which are neither ASME marked pressure vessels, nor
47、 evaluated to meet UL refrigerant pressure requirements, shall comply with all of the following: a) The storage cylinder shall comply with DOT specifications, 49CFR, and have a service pressure rating of at least 260 psig (1.79 MPa), but not less than 80 percent of the setting of the pressure limiti
48、ng device. b) The cylinder valve shall comply with the Standard for Cylinder Valves, UL 1769. c) The pressure relief device shall comply with the Pressure Relief Device Standard Part 1 - Cylinders for Compressed Gases, Compressed Gas Association Pamphlet S-1.1. d) Elastomeric materials employed on cylinder valves and relief devices that contact refrigerant shall comply with the tests specified in 66.2.1 - 66.4.1 of UL 1963, Standard for Refrigerant Recovery/Recycling Equipment. e) The storage cylinder shall withstand, without rupture, a pressure of four times the maximum adjus