1、Designation: F 2520 05Standard Specification forReach-in Refrigerators, Freezers, Combination Refrigerator/Freezers, and Thaw Cabinets1This standard is issued under the fixed designation F 2520; the number immediately following the designation indicates the year oforiginal adoption or, in the case o
2、f revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers the basic design and functionof temperature regulated, continuous d
3、uty 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 manufactured with a substance) that harmspublic he
4、alth 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 stated in inch-pound units are to be regardedas t
5、he 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 safety and health practices and determine the
6、applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2A 167 Specification for Stainless and Heat-ResistingChromium-Nickel Steel Plate, Sheet, and StripB 280 Specification for Seamless Copper Tube for AirConditioning and Refrigeration Field ServiceD 3951 Pra
7、ctice for Commercial PackagingF 760 Specification for Food Service Equipment ManualsF 1166 Practice for Human Engineering Design for MarineSystems, Equipment and Facilities2.2 ANSI/UL Standards:3ANSI/UL 303 Refrigeration and Air-Conditioning Con-densing and Compressor UnitsANSI/UL 471 Commercial Ref
8、rigerators 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 7 Food Service Refrigerators and FreezersN
9、SF/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 Standard:7CAN/CSA C22.2 #120-M91 Refrigerati
10、on 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 Subsystems andEquipmentMIL-STD-1399/300 Interface
11、Standard For Shipboard Sys-tems Section 300A Electric Power, Alternating CurrentMIL-R-12323 Refrigerators and Related Equipment, Pack-aging and Packing3. Terminology3.1 Definitions:1This specification is under the jurisdiction of ASTM Committee F26 on FoodService Equipment and is the direct responsi
12、bility of Subcommittee F26.03 onStorage and Dispensing Equipment.Current edition approved Sept. 1, 2005. Published September 2005.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume informat
13、ion, 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, MI 48113-0140.5Available from American Soc
14、iety 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 Association (CSA), 178 Rexdale Blvd.,Toron
15、to, 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 States.3.1.1 ambient air temperaturetempera
16、ture 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 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 interio
17、r 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)forced circulation typecooling unit consists of a cooling coil, fan with motor, andenclosing casing.3.1.6 evaporator coils (static)refrigerat
18、ed inner liner withthe refrigerating coils incorporated in or attached to the wallsof the unit.3.1.7 explosion proofrefers to a specific requirement forequipment used in hazardous atmospheres.3.1.8 horizontal cabinetany cabinet of undercounter orcounter height design.3.1.9 modularparticular method o
19、f cabinet construction,which allows the cabinet and all of its components to bedissembled and reassembled for ease of installation.3.1.10 positive latching hardwareany latching mecha-nism that requires that the latch be disengaged before the doorcan be opened.3.1.11 thawequipment designed to acceler
20、ate 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 piece cabinet construction.3.1.14 vertical cabinetany cabinet with single or multipledoor arrangements whose height is its greatest dimension a
21、ndis in excess of 36 in. (914 mm).4. Classification4.1 GeneralRefrigerators, freezers, combinationrefrigerator/freezers or thaw cabinets covered by this specifi-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 IIICom
22、bination 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 1Modular construction.4.4.2 Class 2Unitary (single piece) construction.4.5 SizesThe following tables depict the sizes of thevarious types of units.
23、 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.4.5.1 Vertical Cabinet, Style 1 (Refrigerator or Freezer):Sizesft3(L)NetCapacityStorageft3(L)MaximumWidthin. (mm)MaximumOverallDepthin. (mm)Max
24、imumHeightwithout 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 (1829)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 (188
25、0)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.4.5.1.2 Height does not include legs when applicable.4.5.2 Horizontal Cabinet, Style 2 (Refrigerator or Freezer):Sizesft3(L)NetCapacityStorag
26、eft3(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) 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 ov
27、erall with door in-stalled.4.5.2.2 Height does not include legs when applicable.4.5.3 Combination Refrigerator/Freezer Cabinet:Sizesft3(L)TotalCapacityStorageft3(L)LowTemperatureCapacityft3(L)MaximumWidthin. (mm)MaximumOverallDepthin. (mm)MaximumHeightwithout Legsin. (mm)10 (283) 9 (255) 3 (85) 31 (
28、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) 64 (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-stalle
29、d.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 (1219) 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 Styl
30、e 2Roll-in cart loading.5. Ordering Information5.1 Ordering DataPurchasers shall select refrigerators,freezers, combination refrigerator/freezers or thaw cabinetequipment and any preferred options and include the followinginformation in the purchasing document:5.1.1 Title, number, and date of this s
31、pecification,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 Electrical power supply characteristics; voltage,phase, frequency,5.1.6 Number of doors, swing, type (solid or glass),F25200525.1.7 Accessory equi
32、pment: 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/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 p
33、urchaser shall be furnishedcertification that samples representing each lot have been eithertested or inspected as directed in this specification and 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
34、packing required if otherthan as stated in Practice D 3951 (see 17.1),5.1.11 Other custom features or requirements desired, and5.1.12 Labeling requirements (if different than 15.1).6. Materials and Manufacture6.1 GeneralRefrigerators, freezers, combinationrefrigerator/freezers or thaw cabinets shall
35、 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 materials.6.1.1 Corrosion-Resistant SteelCorrosion-resistant steelshall conform to Specification A 167 and the requirements on300 or 430 series of st
36、ainless steels as applicable.6.1.2 Non-Corrosion Resistant SteelMild steel used shallhave been treated with a coating of either zinc, chrome, nickel,paint, 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
37、TubingAll refrigerant lines usedin the system shall be of seamless copper tubing conforming toSpecification B 280.6.1.5 Hardware, Fittings, FastenersAll materials used ashardware, fittings, and fasteners shall be of a corrosion-resistant material.6.1.6 Ozone Depleting CompoundsType one ozone de-plet
38、ing compounds shall not be used as a refrigerant or as acomponent of foam insulation and shall be the manufacturersstandard chemicals.7. Design and Construction7.1 GeneralRefrigerators, freezers, combinationrefrigerator/freezers, or thaw cabinets shall be the manufactur-ers standard product delivere
39、d assembled, ready for mounting,and connected to electricity and used as applicable. Storagetemperatures of units shall meet the requirements specified byNSF/ANSI No. 7.7.2 Refrigeration Equipment:7.2.1 Condensing UnitEach condensing unit shall con-form to the requirements ofANSI/UL 303. Service lin
40、es 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 unit shall be adequate for theintended application.7.2.2 Condensing Unit LocationOn vertical type cabinets,the condensing unit may be located on eit
41、her the top or bottomof the storage compartment. With a horizontal configuration,the condensing unit can be located either to the left or right ofthe storage compartment unless it is remote.7.2.3 Refrigerated MeteringIf a thermal expansion valveis used, it shall adhere to the ASHRAE 15, which addres
42、sessystem working pressures.7.2.4 Evaporated Coil Assembly (Forced Air)The coilingcoil shall be finned tube construction using copper tubes. Thecoil tube sheets shall be aluminum, copper, or brass. The fanhub shall be corrosion resistant. The fan and motor shall bedirect mounted. The grill opening,
43、shroud, and enclosingcasing shall be corrosion resistant.7.2.5 Condensate DrainAll models incorporating forcedair evaporators shall provide a thermostatically controlledvaporizer pans as means of disposing of evaporator runoff. Analternate means of condensate evaporation, which allow con-nection to
44、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 ConstructionModular units consisting ofpanel construction must fit together in such a way that, whenreassembled, the panels cannot move more than116 in. (1
45、.6mm) in any direction.7.3.2 Fastening MethodsFor modular constructed units,in the assembly process, only those types of fastening methodscan be used which 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
46、permanent fasteningmeans of the sub-components to one another, such as welding,brazing, soldering, or the use of epoxies or other adhesives isacceptable.7.3.3 Access CapsThe caps used to seal the panel fasteneraccess hole, when installed shall be watertight and have flarededges. Access caps, as inst
47、alled, shall conform to NSF/ANSINo. 7.7.3.4 Modular Refrigeration SystemsThe refrigerationsystem shall be furnished fully assembled, and operational. Itwill have been previously charged, tested, and all controlsproperly adjusted. The system shall have the capability, ifbeing partially disassembled a
48、nd reassembled, at the time ofinstallation, without the need of an additional refrigerantcharge or control adjustments. The condensing unit shall beable to be removed from the condensing unit compartment forease in moving the cabinet base section.7.3.5 Modular Refrigerant CouplingsThe refrigerationl
49、ines 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 without its failure.7.3.6 Modular InstallationModular units shall be capableof being assembled and installed in the location where they areto be used.
