Chrysler LLC - ME Building GroupConstruction Standards

Project & Bid PackageReviewed : Oct. 2010

SECTION 15131 - HYDRONIC PUMPS

PART 1 - GENERAL

1.1RELATED DOCUMENTS

Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section.

1.2SUMMARY

  1. This Section includes the following:
  2. Separately coupled, base-mounted, end-suction centrifugal pumps.
  3. Separately coupled, base mounted, double suction centrifugal pumps.

1.3DEFINITIONS

  1. Buna-N: Nitrile rubber.
  2. EPT: Ethylene propylene terpolymer.

1.4SUBMITTALS

  1. Product Data: Include certified performance curves and rated capacities, operating characteristics, furnished specialties, final impeller dimensions, and accessories for each type of product indicated. Indicate pump's operating point on curves.
  2. Shop Drawings: Show pump layout and connections. Include setting drawings with templates for installing foundation and anchor bolts and other anchorages.
  3. Wiring Diagrams: Power, signal, and control wiring.
  4. Operation and Maintenance Data: For pumps to include in emergency, operation, and maintenance manuals.

1.5QUALITY ASSURANCE

  1. Source Limitations: Obtain hydronic pumps through one source from a single manufacturer.
  2. Product Options: Drawings indicate size, profiles, and dimensional requirements of hydronic pumps and are based on the specific system indicated. Refer to Division1 Section "Product Requirements."
  3. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA70, Article100, by a testing agency acceptable to authorities having jurisdiction, and marked for intended use.
  4. UL Compliance: Comply with UL778 for motor-operated water pumps.

1.6DELIVERY, STORAGE, AND HANDLING

  1. 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. Store pumps in dry location.
  3. Retain protective covers for flanges and protective coatings during storage.
  1. Protect bearings and couplings against damage from sand, grit, and other foreign matter.
  2. Comply with pump manufacturer's written rigging instructions.

1.7COORDINATION

  1. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified in Division3.

PART 2 - PRODUCTS

2.1SEPARATELY COUPLED, BASE-MOUNTED, END-SUCTION CENTRIFUGAL PUMPS

  1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:
  2. Armstrong Pumps Inc.
  3. ITT Industries A-C Pump Division
  4. Flowserve Corporation; Division of Ingersoll-Dresser Pumps.
  5. ITT Industries Gould Pump Division.
  6. Description: Factory-assembled and -tested, ANSI centrifugal, separately (long) coupled, end-suction pump designed for base mounting, with pump and motor shafts horizontal. Rate pump for 150-psig minimum working pressure and a continuous water temperature of 225 degF.
  7. Pump Construction:
  8. Casing: Radially split, ASTM-4864, Class 30, cast iron, with threaded gage tappings at inlet and outlet, drain plug at bottom and air vent at top of volute, and flanged connections. Provide integral mount on volute to support the casing, and attached piping to allow removal and replacement of impeller without disconnecting piping or requiring the realignment of pump and motor shaft.
  9. Impeller: ASTMB584, cast bronze; statically and dynamically balanced, keyed to shaft, renewable impeller wear ring, and secured with a locking cap screw. Trim impeller to match specified performance.
  10. Pump Shaft: Steel, with copper-alloy shaft sleeve.
  11. Mechanical Seal: Type 21 with carbon and ceramic faces, stainless steel metal parts and elastomeric bellows and gaskets.
  12. Pump Bearings: Grease-lubricated ball bearings contained in cast-iron housing with grease fittings. Bearings shall be rated for 3-year minimum B-10 life.
  13. Shaft Coupling: Molded-rubber insert and interlocking spider capable of absorbing vibration. Couplings shall be drop-out type to allow disassembly and removal without removing pump shaft or motor.
  14. Coupling Guard: Dual rated; ANSIB15.1, Section8; OSHA1910.219 approved; steel; removable; attached to mounting frame.
  15. Mounting Frame: Rigid cast or welded-steel frame and cross members, factory fabricated from ASTMA36/A36M channels and angles. Fabricate to mount pump casing, coupling guard, and motor and capable of carrying pumping forces and moments of the plant piping system.
  1. Motor: Single speed, with grease- lubricated ball bearings, unless otherwise indicated; secured to mounting frame, with adjustable alignment. Comply with requirements in Division15 Section "Motors." Motors supplied for VFD applications shall have ratings for such service. Motors shall be premium efficiency with 1.15 service factor. Motor shall be sufficient to prevent overloading at operating conditions or at the lowest listed head conditions whichever condition requires greater horsepower.

2.2SEPARATELY COUPLED, BASE-MOUNTED, DOUBLE-SUCTION CENTRIFUGAL PUMPS

  1. Manufacturers: Subject to compliance with requirements, provide products by one of the following:
  2. ITT Industries A-C Pump Division
  3. Description: Factory-assembled and –tested, ANSI, centrifugal, impeller-between-bearings, separately coupled, double-suction, axially split pump; designed for base mounting, with pump and motor shafts horizontal.
  4. Pump Construction:
  5. Casing: Horizontally split, cast iron, with replaceable bronze wear rings, threaded gage tappings at inlet and outlet, drain plug at bottom and air vent at top of volute, and ASMEB16.1, Class125 flanges. Casing supports shall allow removal and replacement of impeller without disconnecting piping.
  6. Impeller: ASTMB584, cast bronze; statically and dynamically balanced, and keyed to shaft. Trim impeller to match specified performance.
  7. Pump Shaft: Stainless steel.
  8. Seal: Mechanical seal consisting of carbon rotating ring against a ceramic seat held by a stainless-steel spring, and Buna-N bellows and gasket.
  9. Pump Bearings: Grease-lubricated ball bearings in cast-iron housing with grease fittings. Bearings shall be 3 year minimum L-10 life.
  10. Shaft Coupling: Molded-rubber insert and interlocking spider capable of absorbing vibration. Couplings shall be drop-out type to allow disassembly and removal without removing pump shaft or motor.
  11. Coupling Guard: Dual rated; ANSIB15.1, Section8; OSHA1910.219 approved; steel; removable; attached to mounting frame.
  12. Mounting Frame: Rigid, welded-steel frame and cross members, factory fabricated from ASTMA36/A36M channels and angles. Fabricate to mount pump casing, coupling guard, and motor.
  13. Motor: Single speed, with grease- lubricated ball bearings, unless otherwise indicated; secured to mounting frame, with adjustable alignment. Comply with requirements in Division15 Section "Motors." Motors supplied for VFD applications shall have ratings for such service. Motors shall be premium efficiency with 1.15 service factor. Motor shall be sufficient to prevent overloading at operating conditions or at the lowest listed head conditions whichever condition requires greater horsepower.

2.3PUMP SPECIALTY FITTINGS

  1. Suction Diffuser: Angle pattern, 175-psig pressure rating, cast-iron body and end cap, pump-inlet fitting; with bronze startup and bronze or stainless-steel permanent strainers; bronze or stainless-steel straightening vanes; drain plug; and factory-fabricated support.
  1. Triple-Duty Valve: Angle or straight pattern, 175-psig pressure rating, cast-iron body, pump-discharge fitting; with drain plug and bronze-fitted shutoff, balancing, and check valve features. Brass gage ports with integral check valve, and orifice for flow measurement.

2.4PUMP REPAIR/REBUILD

  1. Existing Pumps are as follows:
  2. Dual Temperature Tower Water System Pumps: P-101, P-102, P-103, P-104, P-105, and P-106.
  3. Dual Temperature System Secondary Pumps: P-701, P-702, P-703, P-704, P-705, and P-706.
  4. Cooling Water System Pumps: P-201, P-202, P-203, and P-204.
  5. Weld Water (North System) Pumps: P-901, P-902, and P-903.

All pumps are ITT Industries A-C Pump Division; Pump Series 8100 Horizontally Split Separately Coupled Double Suction Centrifugal Pimps.

  1. Description of Work:
  2. Pumps shall be disassembled, cleaned, and inspected.
  3. Dimensionally measure all operating clearance and record.
  4. Machine and/or replace all rotating parts.
  5. Dynamically balance all rotating parts.
  6. Assemble pump to original manufacturer’s specifications.
  7. Paint, preserve pump and deliver to site.
  8. New Parts shall include, but not limited to:
  9. Impellers
  10. Bearings and Bearing Nuts
  11. Mechanical Seals
  12. O-rings
  13. Gaskets
  14. Provide new Pump Curves and Part Lists
  15. Provide new identification lamacoid plate type placards at each pump indicating pumping system and pump number, volume, total head, impeller size, rpm and motor horsepower, and date of change/rebuild.
  16. Dual Temperature Tower Water System Pumps:

P-101 to P-103 & P-106: / Existing: / Rebuilt:
Model: / ITT-AC-9100 16 x 14 x 17L
Impeller Size: / 13.5 inches diameter / 13.5 inches diameter
Power: / 1,785 rpm @ 300 HP
~ 235.23 BHP / 1,785 rpm @ 300 HP
~ 235.23 BHP
Pumping: / 6,900 gpm @ 135 ft-hd. / 6,900 gpm @ 135 ft-hd.
P-104 & P-105:
Model: / ITT-AC-8100 12 x 10 x 14L
Impeller Size: / 12.8 inches diameter / 12.8 inches diameter
Power: / 1,780 rpm @ 200 HP
~ 157.45 BHP / 1,780 rpm @ 200 HP
~ 157.45 BHP
Pumping: / 4,300 gpm @ 145 ft-hd. / 4,300 gpm @ 145 ft-hd.
  1. Dual Temperature System Secondary Pumps:

P-701 to P-706: / Existing: / Rebuilt:
Model: / ITT-AC-8100 10 x 8 x 17L
Impeller Size: / 15.5 inches diameter / 16.5 inches diameter
Power: / 1,785 rpm @ 200 HP
~ 142.26 BHP / 1,785 rpm @ 200 HP
~ 195.70 BHP
Pumping: / 2,335 gpm @ 228 ft-hd. / 2,486 gpm @ 243 ft-hd.
  1. Cooling Water System Pumps:

P-201 to P-204: / Existing: / Rebuilt:
Model: / ITT-AC-8100 10 x 8 x 12L
Impeller Size: / 12.4 inches diameter / 12.8 inches diameter
Power: / 1,780 rpm @ 125 HP
~ 94.95 BHP / 1,780 rpm @ 125 HP
~ 116.84 BHP
Pumping: / 2,776 gpm @ 128 ft-hd. / 2,886 gpm @ 136 ft-hd.
  1. Weld Water (North System) Pumps:

P-901 to P-903: / Existing: / Rebuilt:
Model: / ITT-AC-8100 6 x 4 x 12XL
Impeller Size: / 13.8 inches diameter / 13.8 inches diameter
Power: / 1,785 rpm @ 60 HP
~ 44.77 BHP / 1,785 rpm @ 60 HP
~ 44.77 BHP
Pumping: / 900 gpm @ 197 ft-hd. / 900 gpm @ 197 ft-hd.
  1. All pumps are from an operating system and shall be removed one at time for rebuilding, unless otherwise directed by the Owner.

PART 3 - EXECUTION

3.1EXAMINATION

  1. Examine equipment foundations and anchor-bolt locations for compliance with requirements for installation tolerances and other conditions affecting performance of work.
  2. Examine roughing-in for piping systems to verify actual locations of piping connections before pump installation.
  3. Examine foundations and inertia bases for suitable conditions where pumps are to be installed.
  4. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2CONCRETE BASES

  1. Concrete bases are installed under Division 3. Refer to Division15 Section "Basic Mechanical Materials and Methods."
  2. For supported equipment, install epoxy-coated anchor bolts that extend through concrete base and anchor into structural concrete floor.
  3. Place and secure anchorage devices. Use setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded. Coordinate construction of concrete bases with other trades.
  4. Install anchor bolts to elevations required for proper attachment to supported equipment.
  5. Cast-in-place concrete materials and placement requirements are specified in Division3.

3.3PUMP INSTALLATION

  1. Install pumps with access for periodic maintenance including removal of motors, impellers, couplings, and accessories.
  2. Independently support pumps and piping so weight of piping is not supported by pumps and weight of pumps is not supported by piping.
  3. Set base-mounted pumps on concrete foundation. Disconnect coupling before setting. Do not reconnect couplings until alignment procedure is complete.
  4. Support pump baseplate on rectangular metal blocks and shims, or on metal wedges with small taper, at points near foundation bolts to provide a gap of 3/4 to 1-1/2 inches between pump base and foundation for grouting.
  5. Adjust metal supports or wedges until pump and driver shafts are level. Check coupling faces and suction and discharge flanges of pump to verify that they are level and plumb.
  1. Automatic Condensate Pump Units: Install units for collecting condensate and extend to open drain.

3.4ALIGNMENT

  1. Align pump and motor shafts and piping connections after setting on foundation, grout has been set and foundation bolts have been tightened, and piping connections have been made.
  2. Comply with pump and coupling manufacturers' written instructions.
  3. Adjust pump and motor shafts for angular and offset alignment by methods specified in manufacturer's installation manuals.
  4. After alignment is correct, tighten foundation bolts evenly but not too firmly. Completely fill baseplate with nonshrink, nonmetallic grout while metal blocks and shims or wedges are in place. After grout has cured, fully tighten foundation bolts.

3.5CONNECTIONS

  1. Piping installation requirements are specified in other Division15 Sections. Drawings indicate general arrangement of piping, fittings, and specialties.
  2. Install piping adjacent to machine to allow service and maintenance.
  3. Connect piping to pumps. Install valves that are same size as piping connected to pumps.
  4. Install suction and discharge pipe sizes equal to or greater than diameter of pump nozzles.
  5. Install triple-duty valve on discharge side of pumps.
  6. Install suction diffuser and shutoff valve on suction side of pumps.
  7. Install flexible connectors on suction and discharge sides of base-mounted pumps between pump casing and valves.
  8. Install pressure gages on pump suction and discharge.
  9. Install check valve and gate or ball valve on each condensate pump unit discharge.
  10. Install electrical connections for power, controls, and devices.
  11. Ground equipment according to Division16 Section "Grounding and Bonding."
  12. Connect wiring according to Division16 Section "Conductors and Cables."

3.6STARTUP SERVICE

  1. Engage a factory-authorized service representative to perform startup service.
  2. Complete installation and startup checks according to manufacturer's written instructions.
  3. Check piping connections for tightness.
  4. Clean strainers on suction piping.
  5. Perform the following startup checks for each pump before starting:
  6. Verify bearing lubrication.
  1. Verify that pump is free to rotate by hand. If pump is bound or drags, do not operate until cause of trouble is determined and corrected.
  2. Verify that pump is rotating in the correct direction.
  1. Prime pump by opening suction valves and closing drains, and prepare pump for operation.
  2. Start motor.
  3. Open discharge valve slowly.

3.7DEMONSTRATION

  1. Engage a factory-authorized service representative to train Owner's maintenance personnel to adjust, operate, and maintain hydronic pumps. Training shall occur in three separate sessions of 4 hours per session.

END OF SECTION

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