1、Designation:F325519Standard Specification forRapid Pull Down Refrigerators(Blast Chillers),Freezers(Blast Freezers),Combination Refrigerator/Freezer(BlastChiller/Freezers),and Quick Chillers for Commercial Use1This standard is issued under the fixed designation F3255;the number immediately following
2、 the designation indicates the 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 ba
3、sic design and function ofrapid pull down refrigerators or freezers,or a combination ofboth,sometimes referred to as“blast chillers,”“blast freezers,”or“quick chillers.”1.2 This equipment is for professional use in commercialand other similar food service establishments for rapid inter-mediate chill
4、ing or freezing of hot food products cooked to aspecific temperature within a specified time period and holdingthe food at a safe temperature when not engaged in the chillingor freezing process.1.3 This standard addresses equipment that is self-contained,manually operated,and has a mechanically refr
5、ig-erated cabinet(s)of a vertical or horizontal cabinet type.Equipment may be a“reach-in”for stationary or fixed shelvingor a“roll-in”for mobile carts.This equipment may also beinstalled under a service counter.1.4 This standard does not cover blast chilling tunnels,continuous blast-chilling and bla
6、st freezing equipment,bakerycombined freezing and storage units.1.5 The standard does not cover“shock freezers”or equip-ment that uses nitrogen or other consumable products in theirfunction.1.6 Equipment covered under this specification may containa substance(or be manufactured with a substance)that
7、 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.1.7 UnitsThe values stated in inch-pound units are
8、to beregarded as standard.The values given in parentheses aremathematical conversions to SI units that are provided forinformation only and are not considered standard.1.8 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of th
9、e user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.9 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established
10、in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D3951 Practice for Commercial PackagingF760 Specification for Food Service
11、 Equipment Manuals2.2 ANSI/UL Standards:3ANSI/UL 471 Commercial Refrigerators and FreezersANSI/UL 969 Standard for Marking and Labeling Systems2.3 NSF/ANSI Standards:4NSF/ANSI 7 Commercial Refrigerators and Freezers2.4 Military Standards:5MIL-STD-167/1 Mechanical Vibrations of ShipboardEquipment Typ
12、e IEnvironmental and Type IIInternally ExcitedMIL-STD-461 Electromagnetic Interference CharacteristicsRequirements for EquipmentMIL-STD-461B Electromagnetic Emission and Susceptibil-ity Requirements for the Control of ElectromagneticInterference1This specification is under the jurisdiction of ASTM C
13、ommittee F26 on FoodService Equipment and is the direct responsibility of Subcommittee F26.03 onStorage and Dispensing Equipment.Current edition approved March 1,2019.Published April 2019.DOI:10.1520/F3255-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer
14、Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from Underwriters Laboratories(UL),2600 N.W.Lake Rd.,Camas,WA 98607-8542,http:/.4Available from NSF International,P.O.Box 130140,789 N.Dixboro Rd.
15、,AnnArbor,MI 48105,http:/www.nsf.org.5Available from Standardization Documents Order Desk,DODSSP,Bldg.4,Section D,700 Robbins Ave.,Philadelphia,PA 19111-5098.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was de
16、veloped in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 MIL-STD-1399/300B Interface Standards for ShipboardSystems Section 300A,Electric Power,Alternating Cur-rent3.Terminology3.1 Definitions:3.1.1 automatic defrost,nprocess where heat is automati-cally introduced into the
