DLA MIL-C-42028-1986 COMPRESSOR-DEHYDRATOR DENTAL EQUIPMENT PORTABLE 115 VOLTS 60 HZ AC《115伏特60赫兹交流电便携式牙科设备 压缩机-干燥机》.pdf

1、b MIL-C-42028 (DM) 6 October 1986 MILITARY SPECIFICATION COMPRESSOR-DEHYDRATOR, DENTAL EQUIPMENT, PORTABLE, 115 Volts, 60 Hz, AC This specification is approved for use within DLA, Defense Personnel Support Center (DM), and is available for use by all Departments and Agencies of the Department of Def

2、ense. 1. SCOPE 1.1 Scope. This specification covers a portable air compressor-dehydrator suitable for use with NSN 6520-00-140-7663, DENTAL OPERATING AND TREATMENT UNIT, FIELD. 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards. The following sPecifications and stan

3、dards form a part of this specification to the extent specified herein. issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. Unless-otherwise specified, the SPECIFIC

4、ATIONS FEDERAL L-P-390 - Plastic, Molding and Extrusion Material, Polyethylene, and Copolymers (Low, Medium, and High Density). PPP-B-6 O 1 - Boxes, Wood, Cleated-Plywood. IBeneficial comments (recommendations, additions, deletions) andl lany pertinent data which may be of use in improving this I Id

5、ocument should be addressed to: Defense Personnel Support I tCenter, Directorate of Medical Materiel, DPSC-RST, 2800 South I 120th Street, Philadelphia, PA 191Q1, by using the self- I laddressed Standardization Document Improvement Proposal (DD I IForm 1426) appearinq at the end of this document OK

6、by letter. I AMSC N/A DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. FSC 6520 / THIS DOCUMENT CONTAINS 16 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MILITARY MIL-M-7298 MIL-L-10547 MIL-V-27166 MIL-C-4616

7、8 STANDARDS FEDERAL FED-STD-101 MILITARY MIL-STD-ZOS MIL-STD-129 MIL-STD- 14 7 MIL-STD-794 MIL-STD-1472 MIL-C-42028 (RM) - Manual, Technical, Commercial Equipment. - Liners, Case and Sheet, Overwrap; Water-Vaporproof, or Waterproof, Flexible. - Valve, Pressure Equalizing, Gaseous Products. - Coating

8、, Aliphatic Polyurethane, Chemical Agent Resistant. - Test Procedures or Packaging Materials. - Sampling Procedures and Tables for - Marking for Shipment and Storage. - Palletized Unit Loads, - Parts and Equipment, Procedures for - Human Engineering Design Criteria Xnspection by Attributes. Packagin

9、g of, for Military Systems, Equipment and Facilities. (Copies of specifications and standards required by contractors in connection with specific acquisition functions Eshould be obtained from the contracting activity or as directed by the contracting activity). of this specification to the extent s

10、pecified herein, Uness othewise specified, the issue of the documents which are DoD adopted shall be those listed in the issue specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS shall be the issue o the non-government document which is current

11、 on the date of the solicitation. 2.2 Other publications. The following documents form a part of the DoDISS 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-42028 65 W O6 0269527 8 MIL-C-42028 (DM) UNDERWRITERS LABORATORY, INC. (UL) UL 544 Sta

12、ndard for Safety Medical and Dental Equipment (Application for copies should be addressed to the Underwriters Laboratories, Inc., 207 East Ohio Street, Chicago, IL 60611, 333 Pfingsten Road, Northbrook, IL 60062, 1285 Walt Whitman Road, Melville, LI, NY 11746, and 1655 Scott Blvd., Santa Clara, CA 9

13、5050). 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption

14、 has been obtained. 2 3. REQUIREMENTS 3.1 Materials. Materials shall be as specified herein. When materials are not specifically designated, those used shall be new, of the same or better quality as used in commercial practice, and entirely suitable for the purpose intended. When dissimilar metals a

15、re used in contact with each other, suitable protection against galvanic corrosion shall be applied to material. 3.2 First article, The contractor shall furnish one or more compressors as specified for examination and testing within the time frame specified by contracting officer to prove prior to s

16、tarting production that his production methods will produce compressors that comply with the requirements of this specification. Examination and tests shall be as specified herein. All examinations and tests shall be conducted by the contractor subject to surveillance and approval by the Government.

17、 3.3 Description. The air compressor and dehydrator shall be a portable, compact, integral unit using a nominal 1.5 horsepower (hp) motor coupled directly to compressor. The unit shall be equipped with a storage tank and an air dryer, all stored within a reinforced carrying case, The system shall be

18、 reliable under harsh field conditions at temperatures from 40 to 120 degrees Fahrenheit (OF) . 3.4 Desiqn, construction and performance. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-42026 (DM) 3.4.1 _r., The compressor shall be of the oil

19、-less type, producing 100 percent: (b) oil-1ree ait- without the use of a al eu cent or other types of ilterS. The compressor cylinders atxl cylinder heads shall be finned 01 maximum heat dissipation. A gpring-jacket lapjoint type teflon compression ring and keflon guide leev ve shall. be used on ea

20、ch piston. ALL cylxnders slm!J. have brass . Rotating components shall be clynitmically balanced. Valves shall be of leaf-type construction. The compressor crankcase sha%l be ventilated with built-in cosEHng fan. A The congesor shall be capable of producing an air low of no leos than 5.4 standard cu

21、bic feet: per minute (scfm) at: 60 pounds m pet sgune inch gauge (pig) and a dew point of no greater- than O*F ut U0 geig. Gompresool: noise level shall be no greater: than 97 deelha% scale A (ana) with the case cover placed above coritpkessok on support QLKG and measured in accordance with tests np

22、eeified in 4.4.3.1 and 4.4.382. The ssmptessor chal1 meet the aging test cpecified in 4.4.3.6. 3.4.2 :yep. The ail: dryer shall be of the cingle-tower, deeiccant: type. Dryer: regeneration shall be automatic each yclc-. I3a.y shad l employ a totally pileumatie mechanism such khat only dry ail: is st

23、ored an no condensate sha3-i form in the sk:osage tank at temperatures above OBF. afin2. be made at 80 psig and after operation at a 40 percent: duty cycl.6, averaged over a 15 minute period in accoxdance with test ogecPHecS in 4.4.3.3. The drying chamber shall be liwd Dew point measurement usplacea

24、ble 8 3.4.3 Moteq. The compressor shall be capacitor stact and capacitor run with a heavy-duty centrifugal switch. Shall be of the totally enc.loeed, fan esoled type with cast end bells and st%y CQUBCI to th motor without the use of gear boxes or belta. The front: motor bearing shall be oversized an

25、d shall be both presa-fitted and “lok-tited“ in piace to prevent outer race rotation. MQOE bearings f3;hal.l be bal1 bearing type, permanent-ly kubulctsd, wltk high temperature grease. nominally %O00 RPM (revolutions pet minute) and rated at 1.5 hp, with Q maximum operating cuirent rating not exceed

26、ing 20 amperes. The motor ohall operate on 115 VOLG, 60 hertz, alternating current power. exceed l.30aF (above ambient). A line circuit breaker shall provide a OWP control to the unit and electrical overload piotection to the motor. The motor shall be The motor maximum winding temperature shall not

27、4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i MIL-C-42028 (DM) 3.4.4 Cord. An electric cord, at least 10 feet in length with “hospital grade” plug shall be provided to permit connection of air compressor to electrical system. The air compressor

28、 shall withstand the dielectric strength test specified in 4.4.3.8. 3.4.5 Storaqe tank. The storage tank shall be at least 3.0 gallons and tested to meet the requirements of A.S.M.E Boiler and Pressure Vessel code OP be National Board Approved (stamped UM, inspected by tank manufacturer). Tank shall

29、 be constructed for internal pressure of at least 375 psig at 650OF. The inside of the tank shall be treated or coated for protection against and the prevention of corrosion and rust. provided with a pressure gauge reading in pounds per square inch, a pressure relief valve and a visual moisture moni

30、tor to indicate that the stored air is dry. A manual drain valve for contingency use shall be provided. (ID The storage tank shall be % 3.4.6 Pressure gauge. An air pressure gauge shall be mounted on storage tank. The gauge shall be graduated from O to 100 psig. 3.4.7 Pressure relief valve. The pres

31、sure relief valve shall be mechanically operated requiring no electrical power, wiring or switches. The-vaive shall operate automatically, sensing pressure in the storage tank and activating to prevent pressure build-up greater than 125 psig in storage tank. 3.4.8 Pressure switch. Shall be an Underw

32、riters Laboratories (UL) recognized, heavy duty double-poe, snap-action switch, actuated by pressure in the tank to start and stop compressor to maintain a pressure differential of 20 psi, starting with the compressor at 60 psig and stopping the compressor at 80 psig. 3.4.9 Hoses and fittinqs. The c

33、ompressor- shall be provided with two (2) high pressure air delivery hoses each 10 feet in length aiid fitted with a No. 294-PB, 3/8 inch O.D. female Kwik- Connect Coupler body, or equal,on one end, and a No. 294-PM, 3/8 inch O.D. male Kwik-Connect Coupler, or equa1,on the other end. O 5 Provided by

34、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-42028 (DM) 3.4.10 m. The compressor shall be furnished completely assembled in a olive drab, rotationally molded, corrosion reoistant, dust-proof, moisture vapor proof and rigid polyethylene reuseable carryi

35、ng storage case. The storage case shell material shall meet the requirements of Federal Speciication L-P-390 for type I, class M, grade 2, polyethylene or equal. The case shall be lined with a sound absorbing material. Provisions shall be made to permit compressor operation with the cover portion of

36、 the carrying case elevated at least four inches above the lower portion, by means of rotatable support arms so as to achieve maximum sound reduction. The case ohall be equipped with a cushioning and support system sufficient to protect the contents from damage in transit and storage due to vibratio

37、n, shock, or compxession. Materials used in case design and construction shall be compatible with chemical agent decontamination or painted with a chemical agent resistant aliphatic polyurethane coating in accordance with MIL-C-46168. i t The case shall provide the compressor storage and transport p

38、rotection in environments where temperatures range from 400 to 600C (storage) and minus 300 to 50OC (transport) and relative humidity range from O to 95% (non-condensing). An automatic/manual precsure/vacuum relief valve in accordance with MIL-V-27166 (Get at 4 0.5 psig) shall be installed within a

39、recessed area of the case wail (see 4.4.3.7). Seal shall be verified by pneumatic pressure technique of Federal Standard TeGt Method 101, method 5009. The case outer surfaces shall be self draining when stored in the normal upright: shipping attitude. The ca8e shall have corrosion resistant steel, s

40、pring loaded, fullgrip 900 stop handles, capable of being used by personnel wearing gloves or mittens. Inside dimension of the bail shall be 4 inches by 1.5 inches minimum. Quantity and placement of handles shall be in accordance with MIL-STD-1472. of compressor and case design shall meet the vibrat

41、ion and shock tests rspecieied in 4.4.3.4 and 4.4.3.5, respectively. The case, with compressor packed inside shall not exceed 10,000 cubic inches or 160 pounds in total weight. O The mounting 3.5 Finish. The compressor shall be fabricated from materials which are inherently resistant to corrosion or

42、 which axe treated to render them corrosion-resistant. Where painting or plating is used, appropriate cleaning and priming shall be performed prior to finishing. Unless otherwise specified, finish shall be equivalent or superior to that of comparable commercial equipment, and shall be free of gaps,

43、scratches, chips and other imperfections . 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-C-qZOZ 65 m 9999906 0269531 T W MIL-C-42028 (DM) 3.6 Workmanship. 3.6.1 Castings. All castings shall be free of extraneous material such as sand, dirt,

44、 pits, sprues, scale, and flux. Fins resulting from line-of-parting of sand mods shall be ground or machined flush with adjacent material. Imperfections in castings may be corrected by welding provided it will cause no degradation in strength or performance. free from rust, scale, burn spots, paint,

45、 grease, and other deformation or failure when the parts connected by the welds are subjected to proof and service loading. penetration and fusion of the metal shall be obtained. fabrication of the compressor shall be free from kinks and sharp bends. The straightening of material shall be done by me

46、thods that will not cause cracking or permanent deformation. Shearing and clipping shall be done neatly and accurately. Corners shall be square and true. a major character shall be made with metal dies or fixtures in order to insure uniformity of size and shape. All burrs and rough edges shall be re

47、moved. 3.6.2 Welding. The surfaces of parts to be welded shall be -% foreign matter. Welds shall transmit stress without permanent Complete and uniform I 3.6.3 Metal fabrication. Metal sheet and plate used in the Flame cutting may be employed. All bends of - - 3.6.4 Bolted connections. Bolt holes sh

48、all. be punched or drilled and shall have the burrs removed. All bolts, nuts and O screws shall be tightened so that they will not work loose under vibration. 3.7 Identification marking. Each unit shall be marked with the following information: COMPRESSOR - DEHYDRATOR, DENTAL EQUIPMENT, PORTABLE, 11

49、5 Volts, 60 Hz, AC NSN 6520-00-139-1246 Name or registered trademark of the manufacturer Contract or purchase order number Serial number 3.8 Tolerances. Where tolerances are not specified, standard commercial tolerances shall be permissible. Tolerances shall be held to a minimum where accuracy is of paramount importance for proper operation and interchangeability of component parts. Assemblies shall be precision-fitted