1、11-04M 15489-1 SECTION 15489 ORAL EVACUATION SYSTEM SPEC WRITER NOTE: Delete between /-/ if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. PART 1 - GENERAL 1.1 DESCRIPTION This section specifies central piped high volume
2、oral evacuation (HVE) system for dental operatories, valving, vacuum producers, separators, electric motors, starters and controls. 1.2 RELATED WORK A. Sealing around pipe penetrations to maintain the integrity of time rated construction: Section 07270, FIRESTOPPING. B. Sealing around pipe penetrati
3、ons through the floor to prevent moisture migration, Section 07920, SEALANTS AND CAULKING. C. Piping system identification: Section 09900, PAINTING. D. General requirements and items common to more than one section of Division 15: Section 15050, BASIC METHODS AND REQUIREMENTS (MECHANICAL). E. Valves
4、 and strainers (as required for water): Section 15400, PLUMBING SYSTEMS. F. Electric Motors: Section 16150, MOTORS. G. Motor Starters: Section 16155, MOTOR STARTERS. 1.3 QUALITY ASSURANCE A. System: Each vacuum producer shall be sized to produce 27 kPa (8 inches of mercury) at an airflow of 423 L/mi
5、n 15 standard cubic feet per minute (SCFM) per utility junction center (UJC) with 70 percent of the UJCs in operation. System pressure drop shall be a maximum of 3 kPa (1 in-Hg) at the calculated demand flow. 1.4 SUBMITTALS A. Submit in accordance with Section 01340, SAMPLES AND SHOP DRAWINGS. B. Ma
6、nufacturers Literature and Data: Submit the following as one package: 1. Piping 2. Vacuum producer 3. Vacuum cleaning inlet 4. Vacuum gage Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-04M 15489-2 5. Separator 6. Vacuum relief valve 7. Butterfly
7、 valve 8. Directional flow valve 9. Anti-surge valve 10. Exhaust Silencer 11. Separator Drainage Pump/ 12. Control Panel 1.5 APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specification to the extent referenced. The publications are in the text by the basic designation
8、only. B. American National Standards Institute (ANSI): A13.1-96 Scheme for the Identification of Piping System B16.3-98.Malleable Iron Threaded Fittings B16.22-01.Wrought Copper and Bronze Solder-Joint Pressure Fittings B40.1-98. Pressure Gauges and Gauge Attachments C. American Society for Testing
9、and Materials (ASTM): A47-99 .Ferritic Malleable Iron Castings A53-02 .Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless A536-84(1999) e1Ductile Iron Castings B306-02Copper Drainage Tube (DWV) D1785-03 .Poly (Vinyl Chloride) PVC Plastic Pipe Schedule 40, 80, 120 D2564-96 .Solvent Ce
10、ments for Poly (Vinyl Chloride) (PVC) Plastic pipe and fittings D2466-02 .Poly (Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40 D3311-94 .Drain, Waste, and Vent (DWV) Plastic Fittings D. National Fire Protection Association NFPA 99c 2002 Edition.Level 3 Vacuum Provided by IHSNot for ResaleN
11、o reproduction or networking permitted without license from IHS-,-,-11-04M 15489-3 PART 2 - PRODUCTS SPEC WRITER NOTE: Update material requirements to agree with applicable requirements (types, grades, classes, and other related items) specified in the reference applicable publications. Where instal
12、lation requires extra strength or higher class pipe, adjust the following. 2.1 PIPING A. Poly (Vinyl Chloride) (PVC): 1. PVC Piping: ASTM D1785, Type 1 (normal impact), Grade 1 (chemical resistance), Schedule / 40 / 80 / pipe. Provide socket ASTM D2566 fittings and ASTM D2564 PVC solvent cement with
13、 PVC primer recommended by manufacturer. Provide DWV (drain-waste-vent). Use long radius fittings for turns and wye fittings for branching, as defined in Section 15400, PLUMBING SYSTEM. B. Galvanized Steel: Use only for discharge from vacuum producer, as per manufacturers instructions. 1. Pipe: ASTM
14、 A53, standard weight. 2. Fittings: a. Flexible groove type, malleable iron, ASTM A47, or Ductile iron, ASTM A536. b. Malleable iron screwed, ANSI B16.3. C. Cleanouts: Same size and material as pipe. Provide accessible and easily removable cleanouts. As defined in Section 15400, Plumbing system D. A
15、pply piping identification ANSI A13.1. /2.2 DENTAL ORAL EVACUATION VACUUM PUMP/ A. Provide a completely packaged, continuous duty dental vacuum duplex system as shown on the drawings and specified. B. Duplex or multiplex systems shall consist of two or more separate high efficiency positive displace
16、ment oil sealed, rotary vane pumps with automatic continuous oil flow to all moving parts. Operation shall be waterfree. C. Duplex or multiplex systems shall be powered by two separate standard NEMA frame motors with V-belt drives enclosed in a UL approved guard. Provided by IHSNot for ResaleNo repr
17、oduction or networking permitted without license from IHS-,-,-11-04M 15489-4 D. Provide two (2) 50-gallon fiberglass wet separator tanks. Tanks shall be pressure tested and certified for 18-inch Hg. Tanks shall be freestanding with legs. Provide tank drain with check valve. E. Provide an electronic
18、moisture alarm system capable of detecting liquid or foam overflows. Moisture sensors shall be located outside the wet tank. F. 3 phase Motor control center shall be completed with motor starters, overload protection and single phasing protection and control transformers. G. Controls shall be digita
19、l with LED status indicators for “power” and “motor on”; and solid state moisture alarm circuitry, moisture detector and wiring harness, manual start-stop switch, and bypass for moisture alarm and remote on-off circuitry, and indicator for required maintenance. H. System shall have a ten-year warran
20、ty against pump wear-out or failure. I. System shall be UL 2601-1 Dental Vacuum System listed and a FDA Registered Medical Device. J. Rated “Acceptable for Federal Service Use by USAF Dental Investigation Service and recommended shipboard use by the US Navy. K. Unit shall be RAMVAC or equal. /2.3 VA
21、CUUM PRODUCER/ A. Duplex or multi-plex self-governing, multi-stage, centrifugal, turbine type of outboard design with bearings on both ends of the exhauster shaft, maximum speed of 3600 rpm, two self-aligning radial bearings sealed with grease fitting or with oil-cup lubrication, connected to its dr
22、iving motor by flexible coupling. Vacuum produced shall be substantially constant throughout the operating range. B. Cylindrical turbine cases, constructed of heavy-gage sheet steel with continuous welds at all seams or sections. Inlet and exhaust connections tangential to the casing and sized to al
23、low air to move freely (within operational range) through the turbine without air restriction of any kind. Turbine shall have not less than 3.2 mm (0.125 inch) internal clearance throughout. C. Motor and Starter: 1. Maximum 40 degree C ambient temperature rise motor, ball or roller bearing for opera
24、ting with current, voltage, phase and cycle as specified in section 16150, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-04M 15489-5 MOTORS; open dripproof construction, continuous duty rated with service factor of 1.15 or greater; sufficient ca
25、pacity to drive turbines without exceeding the nameplate rating of the motor. 2. Provide each motor with automatic, fully enclosed, magnetic starter of type specified in Section 16155, MOTOR STARTERS. D. Controls: 1. Power and control panel shall include fused disconnects, starters, running hour met
26、er, start-stop button, operational lights, warning light, audible alarm, calibrated ammeter in both SCFM and amperes, current transformers and heavy duty automatic alternators. 2. Complete low voltage control function with low voltage remote control panel of single design containing an on/off switch
27、 pilot lights for water and oral evacuation supply to the dental operatories. Locate remote panel in the secretarys office of the dental clinic. Provide solenoid valve on water supply to the dental separators. E. Unit shall be Gardner-Denver-Lamson Inc., or equal. 2.4 CENTRAL SEPARATOR (DUPLEX) Free
28、standing, bottom pitched to drain at low end, hot-dipped galvanized steel or fiberglass construction with smooth interior walls, and able to withstand a constant negative pressure of 61 kPa (18 inches mercury).Provide optional 360 degree solid state auto flush assembly, with positive protection agai
29、nst flush operation with vacuum producer running, solid-state high-low liquid sensor and corrosion resistant effluent pump to drain the tank. Adjust one tank to sense 90 percent and the other tank to sense 100 percent of its water capacity, to allow for non-simultaneous discharge and, therefore, uni
30、nterrupted HVE function to the clinical facility. Provide a sensor operated (120 VAC) Solenoid valve to control the outgoing airstream for adjustments between five and 180 seconds. Cold water supply to the autoflush unit shall contain an in-line filter equipped with 40-mesh stainless-steel screens.
31、Provide a vacuum switch to prevent the wash down solenoid from operating when system is under a vacuum. Provide pressure reducing valve to maintain water pressure not to exceed 345 kPa (50 PSI). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-04M
32、15489-6 2.5VACUUM RELIEF VALVE (PROVIDE FOR BACKWARD CURVE IMPELLER DESIGN EXHAUSTERS) Mechanically operated, placed at the end of each trunkline, to automatically sense negative pressure in the system to maintain movement of liquids through the piping system to the separator when inlet branches are
33、 closed. Valve connector shall be 13mm (0.5 inch NPT). Equip with a silencer to reduce air noise to below 85 decibels. 2.6 PIPE ISOLATORS Flexible rubber, couple band, sealed clamps to isolate the turbine from the piping. Size coupling in accordance with the turbines intake and output connections an
34、d provide steel coupling guards. 2.7 BUTTERFLY VALVE A. Inlet: Built-in or located near the first stage of the turbine to prevent turbine overload through the operational range. B. Exhaust: Flanged, wafer-style, installed at exhauster output flange for equipment isolation. 2.8 DIRECTIONAL FLOW VALVE
35、 Non-restrictive on turbine inlet to prevent back-flow of air. 2.9 ANTI-SURGE VALVE Mechanical or electrically operated valve that will operate automatically throughout the turbines designed range. Valve shall continually sense the negative pressure within the turbine and maintain a predetermined, o
36、perational level of kPa (inches-of-mercury) draw. Equip with a silencer to reduce air noise to below 85 decibels. 2.10 EXHAUST SILENCER Open-bore expansion type to reduce air noise to below 85 decibels with interior baffling or shrouding. 2.11 REPLACEMENT PARTS A. Furnish a turbine bearings and coup
37、ling kit to include one set of turbine bearings and one complete motor/turbine flexible coupling, all of the same size and design as those supplied with the turbine. B. Provide complete installation instructions for repair kit items. / 2.12 SEPARATOR DRAINAGE PUMP (OPTIONAL) Provide or more effluent
38、 high-pressure corrosion resistant inline jet pump per separator system. Install between separator and gate or swing-type check valve normally installed Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-04M 15489-7 at separator drain outlet. Outlet
39、air solenoid valve between separator and turbine shall not be used. Pumps shall be controlled by liquid level sensors in the separator. 2.13 Separator Drain and Vent Construct in accordance with NFPA 99c 2002 Edition, Level 3 Vacuum System Tank Drains and Tank Vents, paragraph 5.3.3.6.3.1 and 2. 2.1
40、4 VACUUM CLEANING INLET Use only in oral surgery recovery rooms. Provide a Spencer Turbine Company Model 8705A, Type DA, or equal, recessed wall inlet valve with 1003 MOD 40mm (1-1/2 inch) male hose repair coupling with 15mm (1/2-inch) outside diameter aluminum tube stub (50mm long) (2 inches long).
41、 2.15 VACUUM GAGE A. In remote control panel: ANSI B40.1, 40mm (1-1/2 inch) dial with decorative ring. SPEC WRITERS NOTE: Delete Paragraph B if no separator. B. In piping near separator: ANSI B40.1, with metal case, 115mm (4-1/2 inch) dial. 2.16 PVC BODY BALL VALVES PVC Body double-seal ball valves
42、with replaceable neoprene or TFE seat seals. Provide valves suitable for at least 690 kPa (100 psig), cold water, non-shock working pressure. Design especially for vacuum service. Operating parts of valve shall be removable without removing from line. PART 3 - EXECUTION 3.1 INSTALLATION A. Place vac
43、uum producers on insulating pads furnished with the equipment. Do not bolt or anchor equipment to the floor slab. B. Cut pipe square, with burrs removed and install with minimum obstructions to air flow. Use DWV (drain-waste-vent) long-radius fittings for turns and wye type for branches. C. Slope ho
44、rizontal piping not less than ” per 10 ft (2mm per 1m) toward the separator tanks. D. All fittings shall be DWV (drain-waste-vent) long-radius bend types for turns and wye types for branching. For small bore piping for which long-radius bends are not available, two 45-degree bends shall be substitut
45、ed for 90-degree turning. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-11-04M 15489-8 E. All risers to all HVE inlet locations shall be 40 mm (1.5 -inch) nominal pipe size. Risers shall connect to truck lines whose nominal pipe sizes shall be dete
46、rmined by head loss calculations that yield a system designed for no more than 1.7 kPa (0.5 inches mercury) worse case head loss. Piping no smaller than 40 mm 1.5 inch shall be used. F. The cross-sectional area of all trunk lines shall be graduated, increasing toward the vacuum source. The cross-sec
47、tional area at any point along the trunk line shall equate to the sum of the riser cross-sectional areas connected prior to that point. Individual trunk lines shall terminate with connection to the manifold of the separators. SPEC WRITER NOTE: Delete the following Paragraph G, H, and I if wet-type s
48、ystem is specified. G. If backward curve impeller design turbine is installed, terminate the most distant end from the separator of each trunk line with a vacuum relief valve. H. Install separators level and anchored to the floor slab. I. Start up shall be by factory representative. J. Penetrations:
49、 1. Fire Stopping: Where pipes pass through fire partitions, fire walls, smoke partitions, or floors, install a fire stop that provides an effective barrier against the spread of fire, smoke and gases as specified in Section 07270, FIRESTOPPING. Completely fill and seal clearances between raceways and openings with the fire stopping material. 2. Waterproofing: At floor pe
