A-A-50497A
3.4 Water filter. A water filter (strainer) shall be incorporated in the incoming water line as close as possible to the tank or heat exchanger. Proper flow direction shall be indicated by arrows or wording on the strainer. When specified for hard-water areas (see 7.2), a water treatment device shall be furnished.
3.5 Performance.
3.5.1 Type I coffee maker. The type I coffee maker water tank capacity shall be not less than
2 gallons (7.6 litre) and have a thermostatically-controlled immersion heater to heat the water to brewing temperature.
3.5.2 Type II coffee maker. The type II coffee maker heat exchanger shall heat the water to brewing temperature. The heat exchanger shall be thermostatically-controlled and maintain the tank water operating temperature at 200 F 5 F (93 C 3 C). The type II coffee maker shall be provided with automatic flow control of the water pressure to regulate the brewing time between 2 and 4 minutes.
4. REGULATORY REQUIREMENTS.
4.1 Materials. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). Unless otherwise specified herein, all equipment, material, and articles incorporated in the work covered by this commercial item description are to be new and fabricated using materials produced from recovered materials to the maximum extent possible without jeopardizing the intended use. The term "recovered materials" means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. Unless otherwise specified, none of the above shall be interpreted to mean that the use of used or rebuilt products are allowed under this commercial item description.
4.2 Metric products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, provided they fall within specified tolerances using conversion tables contained in the latest version of ASTM SI-10
(IEEE/ASTM SI-10), and all other requirements of this commercial item description including form, fit, and function must be met. If a product is manufactured to metric dimensions and these dimensions exceed the tolerances specified in the inch-pound units, a request should be made to the contracting officer to determine if the product is acceptable. The contracting officer has the option of accepting or rejecting the product.
4.3 Standards compliance. The coffee makers shall meet the applicable requirements of UL 197 and UL 1030, and NEMA 5-15P. Acceptable evidence of meeting the requirements of UL 197 and UL 1030 shall be the UL label, UL listing mark, or a certified test report from a nationally recognized independent testing laboratory, stating the coffee makers have been tested and conform to UL 197 and UL 1030.
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