A-A-52137
1.2 CID based part identification number (PIN). A document based in PIN to identify type, class, style, and model of items is included in section 5. This identification numbering procedure is for Government purposes and does not constitute a requirement for the contractor except as information on “Government unique” data nameplates (see 5.4).
2. SALIENT CHARACTERISTICS
2.1 Design and construction. The cabinets shall be designed as integral free standing units in the types, classes, styles, and models specified (see 1.1). All cabinets shall be equipped with interior lights, thermometers, and all controls necessary for automatically maintaining the selected temperature. The refrigerator cabinets shall maintain a temperature of 38°F ± 2°F, and the warmer cabinets shall maintain a temperature of 150°F to 160°F. The refrigeration system shall be housed in the top of the cabinet. The door opening of each section shall be 26 to 28 inches wide 65 to 68 inches high. The cabinets shall be 89 inches high (maximum), 39 inches wide (each section, maximum), and 39 inches deep (maximum) for Model A cabinets or 42 inches deep (maximum) for Model B cabinets. The inner liner, outer shell, floor (when applicable), and doors shall be fabricated of 20 gauge (minimum), 300 series stainless steel. The space between the inner liner and outer shell, including doors, shall be fully insulated. All major assemblies and installed attachments shall be accessible for maintenance, repair or replacement. Removable access covers and plates shall be provided to permit adjustment, service, and replacement of parts without the need to remove bumpers shall be furnished on cabinets (front and sides only) (see 5.2).
2.1.1 Electrical requirements. Unless otherwise specified, electrical components shall be nominal 115, 208, or 230 V, single-phase, 60 Hz frequency (see 5.2). The cabinets shall operate on 115, 208, or 230 V; single phase; 50 or 60 Hz as specified (see 5.2). Transformers shall not be used to step-up or step-down the voltage for cabinet or condenser unit use, but are permitted as part of the control system (see 2.1.2). When 50 Hz frequency is specified, and the cabinets are to be operated on that frequency, all motors shall be rated at that frequency. A six foot (minimum) power cord terminated with a National Electrical Manufacturers Association (NEMA) three prong grounded plug shall be provided with the cabinet. The cabinets shall be furnished completely wired and ready for connection to the power source.
2.1.2 Refrigerator system (type I cabinets). The cabinets shall use air cooled, self contained, hermetic type compressor, condenser, and evaporator assembly which shall be top mounted (see 2.1). The refrigeration system shall operate on 115, 208, or 230V; single-phase; 50 or 60 Hz, as specified (see 5.2). The use of a transformer to obtain specified voltage for the condensing unit is prohibited. Controls shall be designed to operate on a 115, 208, 230 V, single-phase, 60 Hz system. Controls rated at 115 V,
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