1、Designation: F2520 05 (Reapproved 2012)An American National StandardStandard Specification forReach-in Refrigerators, Freezers, Combination Refrigerator/Freezers, and Thaw Cabinets1This standard is issued under the fixed designation F2520; the number immediately following the designation indicates t
2、he year oforiginal adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the basic design and fu
3、nctionof temperature regulated, continuous duty commercial, andmarine refrigerators, freezers, combination refrigerator/freezers and thaw cabinets. The equipment will be stationaryand of a vertical or horizontal type.1.2 Equipment covered under this specification may containa substance (or be manufa
4、ctured with a substance) that harmspublic health and environment by destroying ozone in theupper atmosphere. This specification does not purport toaddress environmental regulations. It is the responsibility ofthe user of this specification to comply with environmentalregulations.1.3 The values state
5、d in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.1.4 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate sa
6、fety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and StripB280 Specification for Seamless Copper Tube for Air Con-ditioni
7、ng and Refrigeration Field ServiceD3951 Practice for Commercial PackagingF760 Specification for Food Service Equipment ManualsF1166 Practice for Human Engineering Design for MarineSystems, Equipment, and Facilities2.2 ANSI/UL Standards:3ANSI/UL 303 Refrigeration and Air-Conditioning Con-densing and
8、Compressor UnitsANSI/UL 471 Commercial Refrigerators and FreezersANSI/UL 866 Outlet Boxes and Fittings for Use in Hazard-ous Locations, Class I, Groups A, B, C, and D and ClassII, Groups E, F, and GANSI/UL 969 UL Standard for Marking and LabelingSystems2.3 NSF/ANSI International Standards:4NSF/ANSI
9、7 Food Service Refrigerators and FreezersNSF/ANSI 51 Plastic Materials and Components Used inFood Service2.4 ASHRAE Standard:5ASHRAE 15 Safety Code for Mechanical Refrigeration2.5 NFPA Standard:6NFPA 70 National Electrical Code, Article 500, HazardousLocations2.6 Canada National Standard/Canadian St
10、andard:7CAN/CSA C22.2 #120-M91 Refrigeration Equipment2.7 Federal and Military Documents:8MIL-STD-167/1 Mechanical Vibrations of ShipboardEquipment (Type IEnvironmental and Type IIInternally Excited)MIL-STD-461 Requirements For the Control of Electro-magnetic Interference Characteristics of Subsyste
11、ms andEquipmentMIL-STD-1399/300 Interface Standard For Shipboard Sys-tems Section 300A Electric Power, Alternating Current1This specification is under the jurisdiction of ASTM Committee F26 on FoodService Equipment and is the direct responsibility of Subcommittee F26.03 onStorage and Dispensing Equi
12、pment.Current edition approved May 1, 2012. Published August 2012. Originallyapproved in 2005. Last previous edition approved in 2005 as F2520 05. DOI:10.1520/F2520-05R12.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Ann
13、ual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Available from American National Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036.4Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., AnnArbor, M
14、I 48113-0140.5Available from American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. (ASHRAE), 1791 Tullie Circle, NE, Atlanta, GA30329.6Available from National Fire Protection Association (NFPA), 1 BatterymarchPark, Quincy, MA 02269-9101.7Available from Canadian Standards A
15、ssociation (CSA), 178 Rexdale Blvd.,Toronto, ON M9W1R3, Canada.8Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United St
16、ates.MIL-R-12323 Refrigerators and Related Equipment, Pack-aging and Packing3. Terminology3.1 Definitions:3.1.1 ambient air temperaturetemperature of the air sur-rounding the exterior of the cabinet or machinery compart-ment.3.1.2 automatic defrostprocess where heat is automati-cally introduced into
17、 the cooling coils to dissipate any ice orfrost buildups on the coil.3.1.3 capacityterm that refers to the total cubic foot areaof the interior storage.3.1.4 condensing unitseach unit shall consist of a com-pressor, condenser, receiver (if required), fan, and motor.3.1.5 evaporator coils (forced air
18、)forced circulation typecooling unit consists of a cooling coil, fan with motor, andenclosing casing.3.1.6 evaporator coils (static)refrigerated inner liner withthe refrigerating coils incorporated in or attached to the wallsof the unit.3.1.7 explosion proofrefers to a specific requirement forequipm
19、ent used in hazardous atmospheres.3.1.8 horizontal cabinetany cabinet of undercounter orcounter height design.3.1.9 modularparticular method of cabinet construction,which allows the cabinet and all of its components to bedissembled and reassembled for ease of installation.3.1.10 positive latching ha
20、rdwareany latching mecha-nism that requires that the latch be disengaged before the doorcan be opened.3.1.11 thawequipment designed to accelerate the defrost-ing process of perishable products.3.1.12 undercountercabinet which has a maximum heightof no more than 36 in. (916 mm).3.1.13 unitarysingle p
21、iece cabinet construction.3.1.14 vertical cabinetany cabinet with single or multipledoor arrangements whose height is its greatest dimension andis in excess of 36 in. (914 mm).4. Classification4.1 GeneralRefrigerators, freezers, combinationrefrigerator/freezers or thaw cabinets covered by this speci
22、fi-cation are classified by types, grades, classes, styles, and sizes.4.2 Type:4.2.1 Type IRefrigerator.4.2.2 Type IIFreezer.4.2.3 Type IIICombination refrigerator/freezer.4.2.4 Type IVThaw cabinet.4.3 Grades:4.3.1 Grade 1Vertical cabinet.4.3.2 Grade 2Horizontal cabinet.4.4 Classes:4.4.1 Class 1Modu
23、lar construction.4.4.2 Class 2Unitary (single piece) construction.4.5 SizesThe following tables depict the sizes of thevarious types of units. This specification does not purport toaddress all of the sizes that may be available, but is anoverview of the most common sizes used in the industry today.4
24、.5.1 Vertical Cabinet, Style 1 (Refrigerator or Freezer):Sizesft3(L)NetCapacityStorageft3(L)MaximumWidthin. (mm)MaximumOverallDepthin. (mm)MaximumHeightwithout Legsin. (mm)5 (142) 4 (113) 33 (838) 27 (686) 64 (1626)10 (283) 9 (255) 32 (813) 29 (737) 66 (1676)15 (425) 14 (396) 39 (991) 29 (737) 72 (1
25、829)20 (566) 19 (538) 51 (1295) 29 (737) 74 (1880)30 (850) 29 (821) 58 (1473) 32 (813) 74 (1880)40 (1133) 39 (1104) 68 (1727) 34 (864) 74 (1880)65 (1841) 64 (1812) 86 (2184) 34 (864) 74 (1880)85 (2407) 84 (2379) 112 (2845) 34 (864) 74 (1880)4.5.1.1 Depth shown is maximum overall with door in-stalled
26、.4.5.1.2 Height does not include legs when applicable.4.5.2 Horizontal Cabinet, Style 2 (Refrigerator or Freezer):Sizesft3(L)NetCapacityStorageft3(L)MaximumWidthin. (mm)MaximumOverallDepthin. (mm)MaximumHeightwithout Legsin. (mm)5 (142) 4.5 (127) 40 (1016) 28 (711) 28 (711)10 (283) 8 (227) 49 (1245)
27、 28 (711) 28 (711)20 (566) 18 (510) 84 (2134) 28 (711) 28 (711)30 (850) 27 (765) 115 (2921) 28 (711) 28 (711)4.5.2.1 Depth shown is maximum overall with door in-stalled.4.5.2.2 Height does not include legs when applicable.4.5.3 Combination Refrigerator/Freezer Cabinet:Sizesft3(L)TotalCapacityStorage
28、ft3(L)LowTemperatureCapacityft3(L)MaximumWidthin. (mm)MaximumOverallDepthin. (mm)MaximumHeightwithout Legsin. (mm)10 (283) 9 (255) 3 (85) 31 (787) 29 (737) 66 (1676)15 (425) 14 (396) 6 (170) 39 (991) 29 (737) 72 (1829)20 (566) 19 (538) 8 (227) 51 (1295) 29 (737) 74 (1880)30 (850) 29 (821) 13 (368) 6
29、4 (1626) 32 (813) 74 (1880)40 (1133) 39 (1104) 18 (510) 68 (1727) 34 (864) 74 (1880)4.5.3.1 Depth shown is maximum overall with door in-stalled.4.5.3.2 Height does not included legs when applicable.4.5.4 Thaw Cabinets:SizeMaximumWidthin. (mm)MaximumDepthin. (mm)MaximumHeightin. (mm)One Section 48 (1
30、219) 32 (813) 84 (2134)Two Section 72 (1829) 32 (813) 84 (2134)4.6 Styles:4.6.1 Style 1Manual loading, stationary or fixed shelving.4.6.2 Style 2Roll-in cart loading.5. Ordering Information5.1 Ordering DataPurchasers shall select refrigerators,freezers, combination refrigerator/freezers or thaw cabi
31、netequipment and any preferred options and include the followinginformation in the purchasing document:5.1.1 Title, number, and date of this specification,5.1.2 Type, grade, class, style, and size of unit required,5.1.3 Desired exterior and interior finishes,5.1.4 Quantity to be furnished,5.1.5 Elec
32、trical power supply characteristics; voltage,phase, frequency,5.1.6 Number of doors, swing, type (solid or glass),F2520 05 (2012)25.1.7 Accessory equipment: such as spare parts, mainte-nance parts required, or other options available by the manu-facturer, or a combination thereof,5.1.8 When Federal/
33、Military procurement is required, re-view and implement the applicable supplementary require-ments (see S1 through S8.8.3),5.1.9 When specified, the purchaser shall be furnishedcertification that samples representing each lot have been eithertested or inspected as directed in this specification and
34、therequirements have been met. When specified, a copy of the testresults shall be furnished, (see 14.1 through 14.3),5.1.10 Level of preservation and packing required if otherthan as stated in Practice D3951 (see 17.1),5.1.11 Other custom features or requirements desired, and5.1.12 Labeling requirem
35、ents (if different than 15.1).6. Materials and Manufacture6.1 GeneralRefrigerators, freezers, combinationrefrigerator/freezers or thaw cabinets shall conform to NSF/ANSI No. 7. Materials used shall be new and free from defectsor reclaimed and recycled conforming to the same qualitystandards for new
36、materials.6.1.1 Corrosion-Resistant SteelCorrosion-resistant steelshall conform to Specification A167 and the requirements on300 or 430 series of stainless steels as applicable.6.1.2 Non-Corrosion Resistant SteelMild steel used shallhave been treated with a coating of either zinc, chrome, nickel,pai
37、nt, or similar material to inhibit corrosion.6.1.3 AluminumAluminum alloys shall conform to therequirements of NSF/ANSI No. 7.6.1.4 Seamless Copper TubingAll refrigerant lines usedin the system shall be of seamless copper tubing conforming toSpecification B280.6.1.5 Hardware, Fittings, FastenersAll
38、materials used ashardware, fittings, and fasteners shall be of a corrosion-resistant material.6.1.6 Ozone Depleting CompoundsType one ozone de-pleting compounds shall not be used as a refrigerant or as acomponent of foam insulation and shall be the manufacturersstandard chemicals.7. Design and Const
39、ruction7.1 GeneralRefrigerators, freezers, combinationrefrigerator/freezers, or thaw cabinets shall be the manufactur-ers standard product delivered assembled, ready for mounting,and connected to electricity and used as applicable. Storagetemperatures of units shall meet the requirements specified b
40、yNSF/ANSI No. 7.7.2 Refrigeration Equipment:7.2.1 Condensing UnitEach condensing unit shall con-form to the requirements ofANSI/UL 303. Service lines for theattachment of manifold gages and accessories, shall be pro-vided on both the low and high sides of the system. Thecapacity of each condensing u
41、nit shall be adequate for theintended application.7.2.2 Condensing Unit LocationOn vertical type cabinets,the condensing unit may be located on either the top or bottomof the storage compartment. With a horizontal configuration,the condensing unit can be located either to the left or right ofthe sto
42、rage compartment unless it is remote.7.2.3 Refrigerated MeteringIf a thermal expansion valveis used, it shall adhere to the ASHRAE 15, which addressessystem working pressures.7.2.4 Evaporated Coil Assembly (Forced Air)The coilingcoil shall be finned tube construction using copper tubes. Thecoil tube
43、 sheets shall be aluminum, copper, or brass. The fanhub shall be corrosion resistant. The fan and motor shall bedirect mounted. The grill opening, shroud, and enclosingcasing shall be corrosion resistant.7.2.5 Condensate DrainAll models incorporating forcedair evaporators shall provide a thermostati
44、cally controlledvaporizer pans as means of disposing of evaporator runoff. Analternate means of condensate evaporation, which allow con-nection to plumbing, is acceptable. When condensate evapo-rators are used, they shall have a minimum capacity of 32 oz.7.3 Modular Construction:7.3.1 Panel Construc
45、tionModular units consisting ofpanel construction must fit together in such a way that, whenreassembled, the panels cannot move more than116 in. (1.6mm) in any direction.7.3.2 Fastening MethodsFor modular constructed units,in the assembly process, only those types of fastening methodscan be used whi
46、ch would allow the unit to be disassembled ata future date without the use of special tools or methods whichmight damage or disfigure the unit. No permanent fasteningmeans of the sub-components to one another, such as welding,brazing, soldering, or the use of epoxies or other adhesives isacceptable.
47、7.3.3 Access CapsThe caps used to seal the panel fasteneraccess hole, when installed shall be watertight and have flarededges. Access caps, as installed, shall conform to NSF/ANSINo. 7.7.3.4 Modular Refrigeration SystemsThe refrigerationsystem shall be furnished fully assembled, and operational. Itw
48、ill have been previously charged, tested, and all controlsproperly adjusted. The system shall have the capability, ifbeing partially disassembled and reassembled, at the time ofinstallation, without the need of an additional refrigerantcharge or control adjustments. The condensing unit shall beable
49、to be removed from the condensing unit compartment forease in moving the cabinet base section.7.3.5 Modular Refrigerant CouplingsThe refrigerationlines shall be connected by using self-sealing refrigerantcouplings. The couplings are to be specifically designed forrefrigeration applications and shall be used in sets (liquid andsuction lines). There shall be a minimum of two sets in asystem. Larger systems may require additional sets. Therefrigerant couplings are to be a type, which would allow forfuture system opening at the coupling
