1、I 1 A-A-54473 bb I 9999974 00b2300 B I i -L distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4 r i A-A-54473 bb I 9999974 O062303 T I * ! - A- A- 54 473 Shall be designed for a two (2) speed operation that is controlled by a
2、 selector switch. The centrifuge motor shall be controlled by a timer, and a pressure-type safety switch that is in the cover latch assembly. The centrifuge motor shall only operate when the centrifuge cover is properly closed and latched, and the timer is not in the zero (O) position. The two speed
3、s for driving a fully loaded 12 place head at 60 Hz shall be 3,300 minimum revolutions per minute (rpm) for the high speed operating mode, and 2400 +/- 100 rpm for the low speed operating mode. The cent.rifuge with the motor running and a balanced load shall operate without any tendency to creep. Sh
4、all consist of a base housing, a guard bowl with a cover and latch assembly, a removable twelve (12) place head, a motor assembly, motor operation controls and a power line cord with plug termination. The motor operation cont.ro1s shall include a timer, speed selector switch, cover safety switch, el
5、ectric brake circuitry with selector switch, and a speedgovernor. The base housing shall be made of cast iron and shall be fitted with cushioning rubber feet on the underside. The manually operated swi tches shall be mounted in cutouts in the base housing. Th centrifuge sIial? have overall dimeneicn
6、s, wizh cover in the closed position, that does not exceec; !L inches in height. The base diiiiensions shall project within . horizontal surface area that ir not greater than 10 X !O inches. The weight of a total assembled centrifuge shall not exceed 25 pounds. Shall be supplied with a detachable tw
7、elve (12) place rotating head that is fabricated of lightweight impact resistant. plastie. The tube slots shall be numbered from 1 to 12, and shall include an indexing reference so that the head after rGmoval from the centrifuge can be returned to its original orientation on a matching board or hold
8、er (a matching board or holder is not required to be supplied with the centrifuge). The head shall be attached to a spindle located on the shaft of the centrifuge motor. The head shall also be readily removable from the spindle holder. The head shall be designed to hold the test tubes in vertical or
9、 slightly tilted positions when the centrifuge is not operating (i.e. stationary position). The centrifuging operation shall result in the test tube bottoms swinging from the stationary position to an approximate 45 degrees angle and rotating in a circular orbit having a minimum 2-3/4 inch radius. T
10、he head shall be suitable for use outside of the centrifuge as a basket or transport rack for the test tubes. The head shall also allow all the test tubes to be held vertically in place by an elastic band, so that when used a 2 Provided by IHSNot for ResaleNo reproduction or networking permitted wit
11、hout license from IHS-,-,-/ A-Ao54473 bb I 9999974 0062302 I I fL_ _ -1 biJ A- A- 54473 transportation rack the banded test tubes can be emptied simultaneously by inverting the head (i.e. pouring off supernatant liquid after centrifuging). The head shall include date coded marking (e.g. date of manu
12、facture) to facilitate monitoring its usage with time. The manufacturers or contractors service data shall include a recommendation that indicates that the head should be replaced after five (5) years of usage. Shall be supplied with an induction type motor that has a minimum rating of 1.6 amperes.
13、The motor shall include a blower to create an air stream through the motor housing for cooling purposes. Shall be supplied with a guard bowl that is fabricated of aluminum alloy or corrosion-resisting steel. The guard bowl shall be mounted above the base for use as a protective housing for the head.
14、 The guard bowl shall be cylindrical with a nominal eight (8) inch diameter. The guard bowl shall include a top mounted hinged cover that is transparent and fabricated of methyl methacnylate or polycarbonate. The cover shall include a suitable cutout (hole or holes) that allows or proper cooling of
15、the spindle (holding the rotating head) during centrifuging. The guard bowl and cover shall include a latch assembly with manual release. In closure the latch assembly shall secure the closed cover and prevent it from opening when the latch has not been manually released. The closed cover shal1 also
16、 rest on a gasket that shall cover the exposed edge of the guard bowl. The latch qssembly shall include a pressure-type safety switch that shall control the input electric power to the centrifuge motor, so that the centrifuge will only operate when the cover is both closed and properly latched. Shal
17、l be supplied with the fellowing electrical controls and components: An adjustable three (3) minute (minimum range) rotary electric timer that includes a hold position for continuous operation, five (5) second graduations from O to 1 minutes, 15 second graduations from 1 to 3 minutes-, and an “off p
18、osition which results in no electric power to the motor. A two (2) speed selectori switch for selecting the desired centrifuge motor speed mode. An internal mounted centrifugal switch governor that controls the centrifuge motor speed when the selector switch is positioned for the low speed mode. 3 P
19、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.u .s e I A-A-54473 bb E 9999974 00b2303 3 E A-A-54473 A pressure-type safety switch that is included in the cover latch assembly. An electric brake circuit with manual actuating switch for shortening th
20、e deceleration of the rotating head after the timer reaches the off position and shuts off electric power to the motor. A minimum five (5) foot exposed length three-wipe power cord that terminates with a three-blade male grounding plug that is suitable for use with receptacles shown in ANSI Standard
21、 C73.11 or shown in Configuration No. 5-15 of NEMA Standard WD6-88. Shall be supplied with a manual (s) which contains! complete instructions for the operation and maintenance of the centrifuge. - WorkmanshiEl The centrifuge shall be free from defects which detract rom its appearance or impair its s
22、erviceability. gni., Each (EA). One centrifuge, as specified, constitutes one unit. - Responsibility - - for inspection. -_-_ Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as
23、otherwise specified in the contract or purchase order, the contractor may use his own or any facilities suitable fo-? the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the inspections cet forth i
24、n the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Records. Records of examinations and tests performed by or for the contractor shall be maintained by the contractor and made available to the Government upon the Govern
25、ments request, at any time, or from time to time, during the performance of the contract and for a period of three years after delivery of the supplies to which such records relate. - InsEection. - Inspection, as used herein, is defined as both examination (such as visual or auditory investigation w
26、ithout the use of special laboratory appliances or procedures) and testing (determination by technical means of physical and chemical properties) of the item. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I A-A-54473 66 m 9999974 0062304 5 It _-
27、_ - O. r3 .+ A-A-54473 - Inspections - and testing: Inspections and testing shall be conducted in accordance with commercial practice. Sampling for the inspections and testing shall be .in accordance with commercial practice. In addition, each centrifuge shall be tested to demonstrate its capability
28、 for proper operation. Metric-products. Products manufactured to metric dimensions will be considered on an equal basis with those manufactured using inch-pound units, providing they fall within the tolerances specified using conversion tables contained in the latest revision of Federal Standard 376
29、, and all other requirements of this document are met. If a product is manufactured to metric dimensions and those 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 office
30、r has the option of accepting or rejecting the product. -_-c- Contractor certification. The contractor shall certify that the product offered meets the salient characteristics of this description and conforms to the producers own drawings, specifications, standards, and quality assurance practices.
31、The Government reserves the right to require proof of such conformance prior to first delivery and thereafter as may be otherwise provided for under the provisions of the contr.act. Fire and EagmdAy hazard eertifi-gtigc, The contractor shall submit proof prior to delivery that the product offered co
32、nforms to the applicable requirements of UL 1262. Proof shall consist of one of the following: UL label or UL listing of the product, provided the contractor agrees to have Underwriters Laboratories, Inc. forward a copy of the UL report directly to the contracting officer, upon the latters request.
33、Laboratory report from a qualified independent laboratory. If an independent laboratory is used, it must be adequately equipped and competent to determine compliance with L standards. The qualification of such laboratory shall be determined by the Government which reserves the right to require a fac
34、ilities report and to conduct a facilities survey. Any Iaboratory report submitted shall include actual test methods, data taken, and results of tests. Detailed findings of examinations necessary to determine compliance shall also be included. The test report shall also have a section that describes
35、 the test sample in such a way that the report can te used to insure identity of production items with the test sample. This section shall be 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i A-A-54473 bb m 9999774 O062305 7 = A-A-54473 supplemente
36、d with construction information such as materials used, spacings between electrical components, types of bushings, photographs, wiring diagrams, sketches, and parts lists, all appropriately identified. Compliance with,the requirements of UL 1262 shall not excuse compliance with other requirements of
37、 this specification and the contract or purchase order. Federal Food, Drug and-Cosmetic Act. If the product covered by this document has been determined by the U.S. Food and Drug Administration to be under its jurisdiction, the offeror/contractor shall comply, and be responsible for compliance by it
38、s subcontractors/suppliers, with the requirements of the Federal Food, Drug and Cosmetic Act, as amended, and regulations promulgated thereunder. In addition, the offeror/contractor shall comply, and be responsible for compliance by its subcontractors/suppliers, with the requirements of all other ap
39、plicable Federal, State, and local statutes, ordinances and regulations. Recovered materials. The offeror/contractor is encouraged tio use recovered material in accordance with Federal Acquisition Regulation Subpart 23.4 to the maximum extent practical. Pre-eraton,_Eackaging,_Eacking,_labeljg-n-kn U
40、nless otherwise specified, preservation, packaging, and packing shall be to a degree of protection to preclude damage to containers and/or contents thereof under normal shipping conditions, handling, etc., involving shipment from the supply source to the receiving activity, plus reshipment from rece
41、iving activity, and shall conform to applicable carriers rules and regulations. Intermediate and exterior package quantities and labeling and marking shall be as specified in the contract and/or order. -_-_ Other publications. - The following documents form a part of this specification to the extent
42、 that is specified herein. Unless otherwise indicated, the effect on date of invitation for bids or request for proposal shall apply. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) C73.11 Plugs and Receptacles - General Purpose 125 Volts, 15 Amperes, 2 Pole, 3 Wire Grounding Type, Dimensions of (Appli
43、cation for copies should be addressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-54473 bb W 9999974 0062306 9 Wi t- -3 -? A-A-54473 NATIONAL ELECTRICAL MANUFAC
44、TURERS ASSOCIATION (NEMA) WD 6-88 Wiring Devices - Dimensiona1.Requirements (Revision and Redesignation of ANSI C73-73) (Application for copies should be addressed to the National Electrical Manufacturers Association, 2101 L Street, NW Suite 300, Washington, DC 20037) UNDERWRITERS LABORATORIES, INC.
45、 UL 1262 Standard for Laboratory Equipment (Application for copies should be addressed to the Underwriters Laboratories, Inc., Walt Whitman Road, MelviIle, L.I., NY 11746, 207 East Ohio Street, Chicago, IL 60611, and 1655 Scott Boulevard, Santa Clara, CA 95050). - Ordering - data. (Required line vol
46、tage, intermediate/exterior package quantities, labeling, and marking must be specified in the contract and/or order.) NOTE: The following National Stock Numbers are covered by this document. . I 6640-00-145-1180 CENTRIFUGE, LABORATORY, 120 Volt, 60 Hz, AC 6640-01-204-8691 CENTRIFUGE LABORATORY, 120
47、/230 Volt, 50/60 Hz, AC 6640-01-314-6713 CENTRIFUGE, LABORATORY, 1201230 Volt, 50/60 Hz, AC MILITARY INTERESTS: PREPARING ACTIVITY: Army - MD Navy - MS Air Force - 03 Agent: DLA-DM CIVIL ABENCY COORDINATINB ACTIVITIES: VA-OSS PHS FDA-MPQAS Project Number: 6640-1724 Location: ENABLE/CENTRCID/S31 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
