NSF ANSI 37-2017 pdf free download – Air curtains for entranceways in food and food service establishments
1.2 Scope
Equipment covered by this Standard includes, but is not limited to, air curtains for entranceways in food andfood service establishments (e.g., service and customer entries, service windows, cooler and cold storageentries).Housing, air moving equipment, air directional regulating devices, and other appurtenances to the aircurtain are included.
This Standard does not establish equipment installation requirements.While the requirements of this Standardare intended to ensure that equipment may be installed in a sanitary manner, proper installation of equipmentshall be governed by the applicable codes.
Equipment components and materials covered under other NSF or NSF/ANSI Standards or Criteria shall alsocomply with the requirements therein. This Standard is not intended to restrict new unit design, provided thatsuch design meets the minimum specifications described herein.
1.3 Alternative materials, design, and construction
While specific materials，design，and construction may be stipulated in this Standard，equipment thatincorporates alternate materials, design, or construction may be acceptable when such equipment meets theapplicable requirements herein.
1.4 Measurement
Decimal and Sl conversions provided parenthetically shall be considered equivalent.Metric conversions andsignificant figure rounding have been ‘made according to lEEE/ASTM SI 10.
2Normative references
The following documents contain provisions that, through reference, constitute provisions of this NSF/ANSIStandard.At the time this Standard was balloted, the editions listed below were valid.All documents aresubject to revision, and parties are encouraged to investigate the possibility of applying the recent editions ofthe documents indicated below.The most recent published edition of the document shall be used for undatedreferences.
NSFIANSl 170.Glossary of food equipment terminology
IEST-RP-CCO13, Institute of Environmental Sciences Recommended Practice4
3Definitions
3.1 air curtain: A device that delivers a vertical stream of air across an opening for the purpose of keepingtempered air from moving out of the building and insects from moving into the building.
3.2 air curtain protected openings:
3.2.1customer entry:Exterior passage for entrance into an establishment primarily intended for customers3.2.2service entry: an exterior passage for entrance into an establishment primarily intended foremployees and the delivery of supplies.
3.2.3service window: an exterior opening in the wall of an establishment primarily intended to passfinished goods to customers.
3.3 airstream: The directed flow of air generated by an air curtain assembly.
3.4 airstream discharge nozzle:The slot from which the airstream exits the air curtain assembly.
3.5 maximum effective airstream height: Manufacturer specified value indicating the maximum height ofthe airstream in compliance with the applicable performance test protocol in section 6.This value is measuredfrom the bottom of the airstream discharge nozzle.
3.6 maximum effective airstream width:Manufacturer specified value indicating the maximum width of theairstream in compliance with the applicable performance test protocol in section 6.
3.7 Other definitions: Other terms used in this Standard that have special technical meaning are defined inNSF/ANSI 170.
4Materials
The requirements contained in this section are intended to ensure that the materials used in construction ofequipment resist wear; penetration by vermin; and resist the effects of food, heat, refrigerants, cleaningcompounds, sanitizers, and other substances that may contact the materials in the intended use environment.4.1 Corrosion resistance
Exposed surfaces shall be corrosion resistant. Surfaces may be rendered corrosion resistant by theapplication of a coating or coatings.Coatings shall conform to the requirements in 4.3.NSF ANSI 37 pdf download.