SECTION MOTORS AND PUMPS FOR PLUMBING SYSTEMS
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- Dale Dalton
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1 PART 1 GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including the General and Supplementary Conditions and Specification Sections, apply to this Section. B. Related Sections: The following Sections contain requirements that relate to this Section: 1. Section "Motors" for pump motors. 2. Section "Domestic Water Piping" for piping not specified in this Section. 3. Division 16 Sections for power-supply wiring, field-installed disconnects, required electrical devices, and motor controllers. 1.2 SUMMARY A. This Section includes the following types of pumps for permanent installation in plumbing systems: 1. Sewage pumps. 2. Sump pumps. 3. Automatic, packaged pump units. 1.3 DEFINITIONS A. Automatic, Packaged Pump Units: Type suitable for automatically lifting waste water or sewage to a point of discharge. Unit is complete with pump, controls, valves, and basin. B. Permanent-Installation Pumps: Type suitable for fixed installation and connection to piping systems. C. Sewage Pumps: Type suitable for lifting sewage containing solids to point of discharge. Pumps are normally without strainer and have nonclog type impeller. Pumps include cutter- or grinder-type impeller when specified. This type includes wet-pit-mounted vertical sewage pumps and submersible sewage pumps. D. Submersible Pumps: Type that operates with motor submerged in water. E. Sump Pumps: Type suitable for lifting waste water not containing solids from a sump or wet location to a point of discharge. Pumps normally have strainer on inlet. This type includes wet-pit-mounted, vertical sump pumps and submersible sump pumps. F. Wet-Pit-Mounted, Vertical Pumps: Type that operates with pump volute in water and motor above basin. 1.4 PUMP PERFORMANCE REQUIREMENTS A. Pump Pressure Ratings: At least equal to maximum pump-operating pressure. 1.5 SUBMITTALS Page 1 of 16
2 A. General: Submit the following according to the Conditions of the Contract and Specification Sections. B. Product data including certified performance curves, weights (shipping, installed, and operating), furnished specialties, and accessories. Include startup instructions. C. Shop drawings showing layout and connections for pumps. Include setting drawings with templates, directions for installation of foundation and anchor bolts, and other anchorages. D. Wiring diagrams detailing wiring for power, signal, and control systems differentiating between manufacturer-installed wiring and field-installed wiring. E. Product certificates signed by pump manufacturers certifying accuracies under specified operating conditions and compliance with specified requirements. F. Maintenance data for each type and size pump specified to include in the "Operating and Maintenance Manual" specified in Section "Project Closeout." 1.6 QUALITY CONTROL A. Regulatory Requirements: Comply with provisions of the following: 1. ASME B31.9 "Building Services Piping" for piping materials and installation. 2. H.I. "Hydraulic Institute Standards for Centrifugal, Rotary and Reciprocating Pumps" for pump design, manufacture, and installation. 3. UL 778 "Standard for Motor Operated Water Pumps" for construction requirements. Include UL listing and labeling. 4. NEMA MG 1 "Standard for Motors and Generators" for electric motors. Include NEMA listing and labeling. 5. NFPA 70 "National Electrical Code" for electrical components and installation. B. Single-Source Responsibility: Obtain same type of pumps from a single manufacturer. C. Single-Source Responsibility: Obtain same type of pumps from a single manufacturer with pumps, components, and accessories from a single source. Include responsibility and accountability to answer and resolve problems regarding compatibility, installation, performance, and acceptance of pumps. D. Design Criteria: Drawings indicate sizes, profiles, connections, and dimensional requirements of pumps and are based on specific manufacturer types and models indicated. Pumps having equal performance characteristics by other manufacturers may be considered provided that deviations in dimensions and profiles do not change the design concept or intended performance as judged by the Architect. The burden of proof for equality of pumps is on the proposer. 1.7 DELIVERY, STORAGE, AND HANDLING A. Store pumps in a clean, dry location. B. Retain shipping flange protective covers and protective coatings during storage. Page 2 of 16
3 C. Protect bearings and couplings against damage from sand, grit, or other foreign matter. D. Extended Storage Greater Than 5 Days: Dry internal parts with hot air or a vacuumproducing device. After drying, coat internal parts with light oil, kerosene, or antifreeze. Dismantle bearings and couplings, dry and coat with an acid-free heavy oil, and tag and store in a dry location. E. Comply with pump manufacturer's rigging instructions for handling. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Available Manufacturers: Subject to compliance with requirements, manufacturers offering products that may be incorporated in the Work include, but are not limited to, the following: B. Manufacturers: Subject to compliance with requirements, provide products by one of the following: 1. Wet-Pit-Mounted, Vertical Sewage Pumps: a. Aurora Pump, General Signal. b. Paco Pumps, Inc. c. Vertiflo Pump Div., Fluidpak, Inc. d. Weinman by AMW Industries. 2. Submersible Sewage Pumps: a. Aurora Pump, General Signal. b. Aurora/Hydromatic Pumps, Inc., General Signal. c. Paco Pumps, Inc. d. Weinman by AMW Industries. 3. Sewage Pump Reverse-Flow Attachment: a. Paco Pumps, Inc. b. Peerless Pump. c. Weil Pump Co. 4. Submersible, Cutter and Grinder Sewage Pumps: a. Aurora/Hydromatic Pumps, Inc., General Signal. b. Sta-Rite Industries, Inc. c. Weil Pump Co. 5. Wet-Pit-Mounted, Vertical Sump Pumps: a. Aurora Pump, General Signal. b. Paco Pumps, Inc. c. Peerless Pump Co., Sterling Fluid Products, Inc. d. Vertiflo Pump Div., Fluidpak, Inc. e. Weil Pump Co. 6. Submersible Sump Pumps: a. Aurora Pumps, General Signal. b. Grundfos Pumps Corp. c. Paco Pumps, Inc. d. Weil Pump Co. 7. Pump Basins: Page 3 of 16
4 2.2 PUMPS, GENERAL a. Federal Pump Corp. b. Peerless Pump Co., Sterling Fluid Products, Inc. c. Weil Pump Co. A. Plumbing Pumps: Factory assembled and tested, and of construction required for permanent installation. B. Motors: NEMA MG 1; single, multiple, or variable speed with type of enclosure and electrical characteristics indicated. Include built-in thermal-overload protection and grease-lubricated ball bearings. Motors are non-overloading within full range of pump performance curves. C. Finish: Manufacturer's standard paint applied to factory-assembled and -tested plumbing pump unit prior to shipping. D. Manufacturer's Preparation for Shipping: Clean flanges and exposed machined metal surfaces and treat with anticorrosion compound after assembly and testing. Protect flanges, pipe openings, and nozzles with wooden flange covers or with screwed-in plugs. 2.3 SEWAGE PUMPS A. General Description: Centrifugal, end-suction, single-stage sewage pump, with motor and operating controls. B. Impeller: ASTM A 48, Class No. 25 A or higher cast iron, statically and dynamically balanced, open or semi-open nonclog design except where otherwise indicated, overhung, single suction, keyed to shaft, and secured by locking capscrew. C. Impeller: ASTM B 584 cast bronze, statically and dynamically balanced, open or semiopen nonclog design except where otherwise indicated, overhung, single suction, keyed to shaft, and secured by locking capscrew. D. Impeller: ASTM A 532 (ASTM A 532M) abrasion-resistant cast iron, statically and dynamically balanced, open or semi-open nonclog design except where otherwise indicated, overhung, single suction, keyed to shaft, and secured by locking capscrew. E. Wet-Pit-Mounted, Vertical Sewage Pumps: Vertical, separately coupled, suspended type, with basin cover suitable for supporting pumps, motors, and controls. Include holes in cover as required. 1. Pump Arrangement: Duplex. 2. Casing: Cast iron, with open inlet. 3. Pump Shaft and Sleeve Bearings: Stainless-steel shaft with bronze sleeve bearings. Include oil-lubricated, intermediate sleeve bearings at 48 inches (1200 mm) maximum intervals where basin depth is greater than 48 inches (1200 mm), and grease-lubricated, ball-type thrust bearings. 4. Pump and Motor Shaft Coupling: Flexible, capable of absorbing torsional vibration and shaft misalignment. Page 4 of 16
5 5. Seals: Stuffing box, with a minimum of 4 graphite-impregnated braided-yarn rings, bronze lantern ring between center 2 graphite rings, and bronze packing gland. 6. Seals: Mechanical seals, with carbon-steel rotating ring, stainless-steel spring, ceramic seat, and flexible bellows and gasket. 7. Motor: Vertically mounted on cast-iron pedestal. 8. Pump Discharge Piping: Manufacturer's standard galvanized-steel or bronze pipe, except where specific material is indicated. 9. Controls: NEMA 250, Type 1 pedestal-mounted float switch, complete with floats, float rods, and rod buttons. Include automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 10. Float Guide Pipe: Include guide pipe or other restraint for floats and rods in basins of depth greater than 60 inches (1500 mm) and where indicated. 11. High-Water Alarm: Cover-mounted compression-probe alarm with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. F. Submersible Sewage Pumps: Submersible direct-connected type, with a guide rail system and basin cover suitable for supporting controls when cover-mounted controls are specified. Include holes with seals in cover as required. 1. Pump Arrangement: Duplex. 2. Casing: Cast iron, with cast-iron legs that elevate pump to permit flow into impeller. Include discharge companion flange arranged to connect to guide-rail system discharge elbow fitting. 3. Pump and Motor Shaft: Stainless steel, with factory-sealed, grease-lubricated ball bearings. 4. Seals: Double mechanical seals. 5. Motor: Hermetically sealed capacitor-start type, with built-in overload protection. Include a lifting eye or lug, and a 3-conductor waterproof power cable of length required, but not less than 20 feet (6 m), with a grounding plug and cable-sealing assembly for connection at pump. 6. Moisture-Sensing Probe: Include an internal moisture sensor, a waterproof cable of length required but not less than 20 feet (6 m), with a cable-sealing assembly for connection at pump, and a moisture alarm. 7. Guide Rail System: Include the following: a. Guide Rails: 2 galvanized-steel or other corrosion-resisting vertical pipes or structural members, attached to base plate and basin side wall or cover. b. Base Plate: Corrosion-resisting metal plate, attached to basin floor, supporting guide rails and stationary elbow. c. Pump Yokes: Pump-motor- or casing-mounted yokes or other attachments for aligning pump during connection of flanges. d. Movable Elbow: Pump discharge elbow fitting with flange, seal, and positioning device. e. Stationary Elbow: Fixed discharge elbow fitting with flange that mates to movable-elbow flange and support attached to base plate. f. Lifting Cable: Stainless-steel cable attached to pump and basin cover at manhole. Page 5 of 16
6 8. Pump Discharge Piping: Factory or field fabricated, ASTM A 53, Schedule 40, galvanized-steel pipe, bronze pipe, or copper tube, except where specific material is indicated. 9. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosure. Controls consist of 3 micro-pressure switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 10. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosure. Controls consist of 3 mercury float switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 11. Controls: Pedestal-mounted float switch in a NEMA 250, Type 1 enclosure, complete with floats, float rods, and rod buttons. Include automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 12. Float Guide Pipe: Include guide pipe or other restraint for floats and rods in basins of depth greater than 60 inches (1500 mm) and where indicated. 13. High-Water Alarm: Cover-mounted, compression-probe alarm, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. 14. High-Water Alarm: Rod-mounted, NEMA 250, Type 6 micro-pressure-switch alarm matching the control, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. 15. High-Water Alarm: Rod-mounted, NEMA 250, Type 6 mercury float switch alarm matching control, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. G. Submersible Sewage Pumps: Submersible direct-connected type, with basin cover suitable for supporting controls when cover-mounted controls are specified. Include holes in cover as required. 1. Pump Arrangement: Duplex. 2. Casing: Cast iron, with cast-iron legs that elevate pump to permit flow into impeller. Include discharge companion flange arranged for vertical discharge and suitable for plain-end pipe connection. 3. Pump and Motor Shaft: Stainless steel, with factory-sealed, grease-lubricated ball bearings. 4. Seals: Double mechanical seals. 5. Motor: Hermetically sealed capacitor-start type, with built-in overload protection. Include a 3-conductor waterproof power cable of length required, but not less than 20 feet (6 m), with a grounding plug and cable-sealing assembly for connection at pump. 6. Moisture-Sensing Probe: Include an internal moisture sensor, a waterproof cable of length required, but not less than 20 feet (6 m), with a cable-sealing assembly for connection at pump, and a moisture alarm. 7. Pump Discharge Piping: Factory or field fabricated, ASTM A 53, Schedule 40, galvanized-steel pipe, bronze pipe, or copper tube, except where specific material is indicated. Page 6 of 16
7 8. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosure. Controls consist of 3 micro-pressure switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 9. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosure. Controls consist of 3 mercury float switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 10. Controls: Pedestal-mounted float switch in a NEMA 250, Type 1 enclosure, complete with floats, float rods, and rod buttons. Include automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 11. Float Guide Pipe: Include guide pipe or other restraint for floats and rods in basins of depth greater than 60 inches (1500 mm) and where indicated. 12. High-Water Alarm: Cover-mounted, compression-probe alarm, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. 13. High-Water Alarm: Rod-mounted, micro-pressure-switch alarm matching the control in a NEMA 250, Type 6 enclosure, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. 14. High-Water Alarm: Rod-mounted, mercury-float-switch alarm matching the control in a NEMA 250, Type 6 enclosure, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. H. Submersible, Cutter Sewage Pumps: Submersible direct-connected type, with quickdisconnect system and basin cover suitable for supporting controls when cover-mounted controls are specified. Include holes in cover as required. 1. Pump Arrangement: Duplex. 2. Casing: Cast iron, with cast-iron legs that elevate pump to permit flow into impeller. Include discharge companion flange arranged for connection to guiderail system-discharge elbow fitting. 3. Impeller: Bronze or stainless-steel impeller, with stainless-steel cutter assembly. 4. Pump and Motor Shaft: Stainless steel, with factory-sealed, grease-lubricated ball bearings. 5. Seals: Double mechanical seals. 6. Motor: Hermetically sealed capacitor-start type, with built-in overload protection. Include a 3-conductor waterproof power cable of length required, but not less than 20 feet (6 m), with a grounding plug and cable-sealing assembly for connection at pump. 7. Moisture-Sensing Probe: Include an internal moisture sensor, a waterproof cable of length required but not less than 15 feet (4.5 m), with a cable-sealing assembly for connection at pump, and a moisture alarm. 8. Quick-Disconnect System: Include the following: a. Guide Rails: 2 galvanized-steel or other corrosion-resisting vertical pipes or structural members attached to base plate and basin side wall or cover. Page 7 of 16
8 b. Base Plate: Corrosion-resisting metal plate attached to basin floor, supporting guide rails and stationary elbow. c. Pump Yokes: Pump motor- or casing-mounted yokes or other attachments for aligning pump during connection of flanges. d. Movable Elbow: Pump discharge elbow fitting with flange, seal, and positioning device. e. Stationary Elbow: Fixed discharge elbow fitting with flange that mates to movable-elbow flange and support attached to base plate. f. Lifting Cable: Stainless-steel cable attached to pump and basin cover at manhole. 9. Pump Discharge Piping: Factory or field fabricated, ASTM A 53, Schedule 40, galvanized-steel pipe, bronze pipe, or copper tube, except where specific material is indicated. 10. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosure. Controls consist of 3 mercury float switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 11. High-Water Alarm: Rod-mounted, mercury-float-switch alarm matching the control in a NEMA 250, Type 6 enclosure, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. I. Submersible, Grinder Sewage Pumps: Submersible direct-connected type, with quickdisconnect system and basin cover suitable for supporting controls when cover-mounted controls are specified. Include holes in cover as required. 1. Pump Arrangement: Duplex. 2. Impeller: Bronze or stainless-steel impeller, with stainless-steel grinder assembly. 3. Pump and Motor Shaft: Stainless steel, with factory-sealed, grease-lubricated ball bearings. 4. Seals: Double mechanical seals. 5. Motor: Hermetically sealed capacitor-start type, with built-in overload protection. Include a 3-conductor waterproof power cable of length required, but not less than 20 feet (6 m), with a grounding plug and cable-sealing assembly for connection at pump. 6. Moisture-Sensing Probe: Include an internal moisture sensor, a waterproof cable of length required, but not less than 20 feet (6 m), with a cable-sealing assembly for connection at pump, and a moisture alarm. 7. Quick-Disconnect System: Include the following: a. Guide Rails: 2 galvanized-steel or other corrosion-resisting vertical pipes or structural members attached to base plate and basin side wall or cover. b. Base Plate: Corrosion-resisting metal plate attached to basin floor, supporting guide rails and stationary elbow. c. Pump Yokes: Pump motor- or casing-mounted yokes or other attachments for aligning pump during connection of flanges. d. Movable Elbow: Pump discharge elbow fitting with flange, seal, and positioning device. Page 8 of 16
9 e. Stationary Elbow: Fixed discharge elbow fitting with flange that mates to movable-elbow flange and support attached to base plate. f. Lifting Cable: Stainless-steel cable attached to pump and basin cover at manhole. 8. Pump Discharge Piping: Factory or field fabricated, ASTM A 53, Schedule 40, galvanized-steel pipe, bronze pipe, or copper tube, except where specific material is indicated. 9. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosures. Controls consist of 3 mercury float switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 10. High-Water Alarm: Rod-mounted, mercury-float-switch alarm matching the control in a NEMA 250, Type 6 enclosure, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. 2.4 SEWAGE PUMP REVERSE-FLOW ATTACHMENT A. Description: Factory-fabricated reverse-flow pump attachment for factory or field installation in sewage pump basin. B. Inlet Fitting: 1 combination inlet-overflow strainer fitting. C. Valves: 2 shutoff valves and 2 check valves. D. Strainers: 2 strainer housings with reverse-flow, self-flushing strainers. E. Pipe and Fittings: Size and configuration required to connect to sewage pumps and piping. 2.5 SUMP PUMPS A. General Description: Centrifugal, end-suction, single-stage sump pump, with inlet strainer, motor, and operating controls. B. Impeller: ASTM B 584 cast bronze, statically and dynamically balanced, open or semiopen, overhung, single suction, keyed to shaft, and secured by locking capscrew. C. Wet-Pit-Mounted, Vertical Sump Pumps: Vertical, separately coupled, suspended type, with basin cover suitable for supporting pumps, motors, and controls. Include holes in cover as required. 1. Pump Arrangement: Duplex. 2. Casing: Cast iron, with integral cast-iron inlet strainer. 3. Pump Shaft and Sleeve Bearings: Stainless-steel shaft with bronze sleeve bearings. Include oil-lubricated, intermediate sleeve bearings at 48 inches (1200 mm) maximum intervals where basin depth is greater than 48 inches (1200 mm), and grease-lubricated, ball-type thrust bearings. 4. Pump and Motor Shaft Coupling: Flexible, capable of absorbing torsional vibration and shaft misalignment. Page 9 of 16
10 5. Seals: Stuffing box; with minimum of 4 graphite-impregnated, braided-yarn rings; bronze lantern ring between center 2 graphite rings; and bronze packing gland. 6. Seals: Mechanical seals; with carbon-steel rotating ring; stainless-steel spring; ceramic seat; and flexible bellows and gasket. 7. Motor: Vertically mounted on cast-iron pedestal. 8. Pump Discharge Piping: Manufacturer's standard galvanized-steel or bronze pipe, except where specific material is indicated. 9. Controls: Pedestal-mounted float switch in a NEMA 250, Type 1 enclosure, complete with floats, float rods, and rod buttons. Include automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 10. Float Guide Pipe: Include guide pipe or other restraint for floats and rods in basins of depth greater than 60 inches (1500 mm), and where indicated. 11. High Water Alarm: Cover-mounted-compression-probe alarm with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. D. Submersible Sump Pumps: Submersible direct-connected type, with basin cover suitable for supporting controls when cover-mounted controls are specified. Include holes in cover as required. 1. Pump Arrangement: Duplex. 2. Casing: Cast iron with integral, cast-iron inlet strainer and legs that elevate pump to permit flow into impeller. Include discharge companion flange arranged for vertical discharge and suitable for plain-end pipe connection. 3. Pump and Motor Shaft: Stainless steel, with factory-sealed, grease-lubricated ball bearings. 4. Seals: Double mechanical seals. 5. Motor: Hermetically sealed, capacitor-start type, with built-in overload protection. Include a 3-conductor waterproof power cable of length required, but not less than 20 feet (6 m), with a grounding plug and cable-sealing assembly for connection at pump. 6. Moisture-Sensing Probe: Include an internal moisture sensor, a waterproof cable of length required, but not less than 20 feet (6 m), with a cable-sealing assembly for connection at pump, and a moisture alarm. 7. Pump Discharge Piping: Factory or field fabricated, ASTM A 53, Schedule 40, galvanized-steel pipe, bronze pipe, or copper tube, except where specific material is indicated. 8. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosure. Controls consist of 3 micro-pressure switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 9. Controls: Wall mounted, except where pedestal mounting is indicated, in a NEMA 250, Type 1 enclosure. Controls consist of 3 mercury float switches in NEMA 250, Type 6 enclosures; mounting rod; and electric cables. Include an automatic alternator to alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 10. Controls: Pedestal-mounted float switch in a NEMA 250, Type 1 enclosure, complete with floats, float rods, and rod buttons. Include automatic alternator to Page 10 of 16
11 alternate operation of pump units on successive cycles and operate both units when 1 pump cannot handle the load. 11. Float Guide Pipe: Include guide pipe or other restraint for floats and rods in basins of depth greater than 60 inches (1500 mm) and where indicated. 12. High-Water Alarm: Cover-mounted, compression-probe alarm, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. 13. High-Water Alarm: Rod-mounted, micro-pressure-switch alarm matching the control in a NEMA 250, Type 6 enclosure, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. 14. High-Water Alarm: Rod-mounted, mercury-float-switch alarm matching the control in a NEMA 250, Type 6 enclosure, with electric bell. Operation is 120 volts a.c., with transformer and contacts for remote alarm bell, except where battery operation is indicated. E. Submersible, Waste-Water Sump Pumps: Simplex, submersible, direct-connected type, with basin cover with holes with gaskets in cover as required. 1. Casing: Cast iron with integral, cast-iron inlet strainer. Include discharge companion flange arranged for vertical discharge and suitable for plain-end pipe connection. 2. Pump and Motor Shaft: Stainless steel, with factory-sealed, grease-lubricated ball bearings. 3. Seal: Mechanical seal. 4. Motor: Hermetically sealed capacitor-start type, with built-in overload protection. Include a 3-conductor waterproof power cable of length required, but not less than 10 feet (3 m), with a grounding plug and cable-sealing assembly for connection at pump. 5. Pump Discharge Piping: Factory or field fabricated, ASTM A 53, Schedule 40, galvanized-steel pipe, bronze pipe, or copper tube, except where specific material is indicated. 6. Controls: 120 volts a.c., NEMA 250, Type 6 micro-pressure or mercury float switches, mounted on discharge piping. 2.6 PUMP BASINS A. General: Basins are factory fabricated from metal, fiberglass, or other plastic as indicated. Include metal covers except where plastic covers or basins without covers are indicated. B. Sizes: Dimensions as indicated. C. Inlet and Outlets: Number, sizes, types, and locations indicated. D. Reinforcement: Include mounting plates at locations where pumps, fittings, rail systems, and accessories are installed. E. Covers for basins include openings with gaskets and seals for access, pumps, pump shafts, control rods, discharge piping, vent connections, and power cables where indicated. Page 11 of 16
12 1. Covers for sewage pump basins include gaskets, bushings, and seals that are required to make basin gas-tight when installed. 2. Covers for sump pump basins include gaskets, bushings, and seals that are required to make basin gastight when installed. 3. Covers for Installation in Foot Traffic Areas: Include steel or cast-iron reinforcing capable of supporting foot traffic. F. Sump Pump Basins: Fabricated from fiber glass. G. Sump Pump Basins: Fabricated from polyethylene. H. Sump Pump Basins: Fabricated from cast iron. I. Sump Pump Basin Covers: Fiber glass. J. Sump Pump Basin Covers: Polyethylene. K. Sump Pump Basin Covers: Steel, with bitumastic coating. L. Sump Pump Basin Covers: Cast iron. M. Sewage Pump Basins: Fabricated from fiber glass. N. Sewage Pump Basins: Fabricated from cast iron. O. Sewage Pump Basin Covers: Steel, with bitumastic coating. P. Sewage Pump Basin Covers: Cast iron. Q. Basin Anchor Flange: Flange cast in or attached to basin, in location and of size required to anchor basin in concrete slab. Include flange of same material as or compatible with basin. 2.7 PUMP PITS AND SUMPS A. General: Pits and sumps are constructed of cast-in-place concrete. Include steel curb frames and covers except where no cover is indicated. B. Sizes: Dimensions as indicated. C. Inlet and Outlets: Number, sizes, types, and locations indicated. D. Curb Frames: Galvanized steel or steel with bitumastic coating of dimension to fit cover. 1. Pattern: Angle-cross-section shape with flat top surface. 2. Pattern: Z-cross-section shape with raised outer rim of height matching cover for recessed mounting that will have installed cover flush with top of floor slab. E. Covers for sump-pump pits and sumps include openings with gaskets and seals for access, pumps, pump shafts, control rods, discharge piping, vent connections, and power cables where indicated. Page 12 of 16
13 1. Covers include gaskets, bushings, and seals that are required to make basins gas-tight when installed. 2. Covers for Installation in Foot Traffic Areas: Include steel or cast-iron reinforcing capable of supporting foot traffic. F. Sump Pump Basin Covers: Fiber glass. G. Sump Pump Basin Covers: Polyethylene. H. Sump Pump Basin Covers: Steel, with bitumastic coating. I. Sump Pump Basin Covers: Cast iron. 2.8 AUTOMATIC, PACKAGED PUMP UNITS A. General Description: Automatic, packaged pump units complete with pumps, basin, controls, and valves. B. Pump Seals: Mechanical type. C. Basin: Fabricated of material indicated, with inlet as indicated. Include gas-tight cover with vent and pump discharge connections. D. Controls: Automatic, with mercury float switches and 20-foot (6m), waterproof, electrical power cables, except where other controls are indicated. E. Pump Discharge Piping: ASTM A 53, Schedule 40, galvanized-steel pipe, except where other material is indicated. F. Pump Discharge Piping: Manufacturer's standard steel pipe, copper tube, or plastic pipe, except where specific material is indicated. G. Valves: Factory- or field-installed check and shutoff valves on each pump discharge. H. Automatic, Packaged Waste-Water Pump Units: Pedestal sump pump, with aluminum impeller, and welded-steel basin. Include motor-mounted float switch, float and rod, and 72-inches (1800-mm) minimum power cord and plug. I. Automatic, Packaged Waste-Water Pump Units: Submersible sump pump, with cast-iron body, brass impeller, and plastic basin. Include 72 inches (1800-mm) minimum power cable and plug. J. Automatic, Packaged Waste-Water Pump Units: Submersible sump pump, with plastic body, impeller, and basin. Include 72-inches (1800-mm) minimum power cable and plug. K. Automatic, Packaged Sewage Pump Units: Submersible sewage pump, with cast-iron body, brass non-clog impeller, and plastic basin. Include control panel, high-water-level alarm, and 20-foot (6m) minimum power cable. Page 13 of 16
14 L. Automatic, Packaged Sewage Pump Units: Duplex sewage pumps. Include 2 submersible sewage pumps with cast-iron bodies and brass non-clog impellers, control panel with alternator, plastic basin, high-water-level alarm, and 20-foot (6m) minimum power cable. M. Automatic, Packaged, Grinder Sewage Pump Units: Suspended-type submersible sewage pump, with cast-iron body, stainless-steel grinder-type impeller and shredding ring, and plastic basin. Include control panel and 20-foot (6m) minimum power cable. N. Automatic, Packaged, Grinder Sewage Pump Units: Duplex-arrangement sewage pumps. Include 2 suspended-type submersible sewage pumps, with cast-iron bodies, stainless-steel grinder-type impellers and shredding rings, control panel, 2-compartment plastic basin, and 20-foot (6m) minimum power cable. 2.9 GENERAL-DUTY VALVES A. Refer to Division 15 Section "Valves" for general-duty gate, ball, butterfly, globe, and check valves. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine areas, equipment foundations, and conditions with Installer present for compliance with requirements for installation and other conditions affecting performance of pumps. Do not proceed with installation until unsatisfactory conditions have been corrected. B. Examine roughing-in of plumbing piping systems to verify actual locations of piping connections prior to pump installation. 3.2 EARTHWORK A. Excavating, trenching, and backfilling are specified in Division 2 Section "Earthwork." 3.3 CONCRETE A. Install concrete bases of dimensions indicated for plumbing pumps. Refer to Division 3 Section "Cast-in-Place Concrete" and Division 15 Section "Basic Mechanical Materials and Methods." B. Construct concrete pits and sumps of shapes and dimensions indicated. C. Concrete for pits and sumps is specified in Division 3 Section "Cast-in-Place Concrete." 3.4 INSTALLATION A. General: Comply with pump manufacturer's written installation instructions. Page 14 of 16
15 B. Install pumps in locations indicated and arrange to provide access for periodic maintenance, including removal of motors, impellers, couplings, and accessories. C. Support piping so that weight of piping is not supported by pumps. D. Wet-Pit-Mounted, Vertical Sewage Pumps: Install wet-pit-mounted sewage pumps, suspended from basin covers, in basins. Make direct connections to sanitary drainage piping. E. Submersible, Sewage Pumps: Install submersible sewage pumps set on basin floor. Make direct connections to sanitary drainage piping. 1. Install guide rail systems anchored to bottom of basins and to basin sidewalls or covers. Install pumps so that pump and discharge pipe disconnecting flanges make positive seals when pumps are dropped into place. F. Wet-Pit-Mounted, Vertical Sump Pumps: Install wet-pit-mounted sump pumps, suspended from basin covers, in basins, pits, or sumps, as indicated. Make direct connections to storm drainage piping. G. Submersible Sump Pumps: Install submersible sump pumps, set on basin, pit, or sump floor. Make direct connections to storm drainage piping. H. Basins: Install manufactured basins in locations indicated and connect to drainage piping. Connect to vent piping when indicated. Brace interior of basins according to manufacturer's instructions to prevent distortion or collapse during concrete placement. Refer to Division 3 Section "Cast-in-Place Concrete" for concrete work. Set basin cover and fasten to basin top flange. Install so top surface of cover is flush with finished floor. I. Automatic, Packaged Pump Units: Install pump units in locations indicated for receiving of fixture waste. Make direct connections to drainage and vent piping. 3.5 CONNECTIONS A. General: Connect piping to pumps as indicated. Install valves that are same size as piping connecting to pumps. B. Install discharge pipe sizes equal to or greater than diameter of pump nozzles. C. Install check valve and gate or ball valve on each sewage and sump pump discharge. D. Install check valve and gate or ball valve on each automatic, packaged pump unit pump discharge. E. Install check valve and gate or ball valve on each automatic, condensate pump unit pump discharge that is connected to drainage piping. F. Install electrical connections for power, controls, and devices. G. Electrical power and control wiring and connections are specified in Division 16 Sections. Page 15 of 16
16 3.6 ADJUSTING A. Pump Controls: Set pump controls for automatic start, stop, and alarm operation as required for system application. 3.7 COMMISSIONING A. Final Checks Before Startup: Perform the following preventive maintenance operations and checks before startup: 1. Lubricate oil-lubricated-type bearings. 2. Remove grease-lubricated bearing covers and flush bearings with kerosene and thoroughly clean. Fill with new lubricant according to manufacturer's recommendations. 3. Disconnect couplings and check motors for proper rotation. Rotation shall match direction of rotation marked on pump casing. 4. Check that pumps are free to rotate by hand. Do not operate pump, if bound or even drags slightly, until cause of trouble is determined and corrected. 5. Check that pump controls are correct for required application. B. Starting procedure for pumps with shutoff power not exceeding safe motor power: 1. Start motors. 2. Open discharge valves slowly. 3. Observe leakage from stuffing boxes and adjust sealing liquid valves for proper flow to ensure lubrication of packing. Let packing "run in" before reducing leakage through stuffing boxes; then tighten glands. 4. Check general mechanical operation of pumps and motors. END OF SECTION Page 16 of 16
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02720 STORM DRAINAGE SYSTEM *************************************************************************************************************** SPECIFIER: CSI MasterFormat 2004 number 33 40 00. ***************************************************************************************************************
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