55-11930 Pump Equp.pdf

SECTION 11930

PUMPING EQUIPMENT DIVISION 11

West Branch Regional Authority 11930-1 January 2026 Route 54 Sanitary Sewer Extension Project Pumping Equipment Contract No. WB-1

PART 1 - GENERAL

1.01 DESCRIPTION OF WORK

A. Scope

1. The work covered under this section shall consist of providing all plant, labor, and material required to furnish, install, test, and place in operation the duplex sewage pumping station, as set forth on the Drawings and in accordance with this section of the Specifications.

2. The pumping equipment and associated items to be provided under this Contract includes, but is not limited to, the following:

a. Pumping equipment.

1) Two (2) Submersible sewage grinder pumps

2) Two (2) Pump and guide rail bases and upper guide rail brackets

3) Stainless steel pump guide rails

4) Two (2) check valves

5) Two (2) ball valves

6) Four (4) each, float switch control system

7) Two (2) each 8-inch inlet hub pipe seals

8) One (1) each, 2-inch discharge bulkhead connection

9) 1 ¼-inch and 2-inch diameter PVC Schedule 80 discharge piping

10) Fiberglass basin with anti-flotation collar

11) Fiberglass cover

12) Stainless steel supports and brackets

13) Stainless steel pump lift chain

14) 25 feet of power cable

15) Control Panel

16) Level sensing device

B. Related Work Specified Elsewhere in Contract Documents

1. The provisions of this section are a direct extension of Section 11000: Equipment

General Provisions and, although set forth only once within these Specifications, shall apply equally to this section.

2. Section 01340: Shop Drawings, Product Data and Samples

3. Section 01720: Project Record Documents

4. Division 15: Mechanical

5. Division 16: Electrical

1.02 REFERENCE STANDARDS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

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1. American Bearing Manufacturers Association (ABMA)

a. ABMA 11 Load Ratings and Fatigue Life for Roller Bearings

b. ABMA 9 Load Ratings and Fatigue Life for Ball Bearings

2. ASME International (ASME)

a. ASME B40.100 Pressure Gauges and Gauge Attachments

3. ASTM International (ASTM)

a. ASTM A 153/A 153M Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

4. National Electrical Manufacturers Association (NEMA)

a. NEMA ICS 1 Standard for Industrial Control and Systems

General Requirements

b. NEMA MG 1 Standard for Motors and Generators

5. National Fire Protection Association (NFPA)

a. NFPA 70 National Electrical Code - 2008 Edition

6. American National Standards Institute/Hydraulic Institute

a. ANSI/HI 1.6-2000 American National Standards for Centrifugal

Pump Tests

b. ANSI/HI 2.6-2000 American National Standards for Centrifugal

Vertical Pump Tests

c. ANSI/HI 3.6-2000 American National Standards for Rotary Pump

Tests

d. ANSI/HI 4.6-2000 American National Standards for Sealless Rotary

Pump Tests

e. ANSI/HI 5.6-2000 American National Standards for Sealless

Centrifugal Pump Tests

f. ANSI/HI 6.6-2000 American National Standards for Reciprocating

Pump Tests

g. ANSI/HI-8.6-2000 American National Standards for Direct Acting

(Steam) Pump Tests

h. ANSI/HI 10.6-2000 American National Standards for Air Operated

Pump Tests

i. ANSI/HI 11.6-2001 American National Standards for Submersible

Pump Tests

j. ANSI/HI 12.6-2000 American National Standards for Rotodynamic

(Centrifugal) Slurry Pump Tests

1.03 QUALITY ASSURANCE

A. Manufacturers

1. Liberty Pumps, D3600-Series, Duplex Ginder Package has been selected by the Owner to be compatible with other installations.

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2. Other manufacturers shall have pumping equipment of the type specified herein successfully operating for a minimum of five (5) years in each of at least five (5) similar installations within the U.S.A.

3. Consideration will be given only to products of manufacturers who have had successful experience in the manufacture, operation, and servicing of equipment of a type, size, quality, performance, and reliability equal to that specified and who have demonstrated the achievement of the minimum performance criteria required in these Specifications.

4. Each respective manufacturer shall maintain a regional service facility and a staff of competent field service technicians for the normal operational requirements and emergencies of the Owner.

5. Pumping equipment manufacturers shall assume complete system responsibility through the Contractor. The Contractor shall coordinate the work of each respective manufacturer for the installation, testing, and operation of the pumping equipment and the scheduling of the manufacturer's personnel.

6. Each respective manufacturer shall be solely responsible for providing pumping equipment that meets the requirements of the Specifications. Substitutions for requirements specified area not permitted.

B. Experience and Qualification Requirements

1. Due to the special importance of proper functioning of the equipment specified in this section to the satisfactory operation of the entire treatment system, the Contractor shall demonstrate in writing, to the satisfaction of the Owner at the time of the Shop Drawings submittal, that the manufacturer has produced the specified type and size of equipment for the service environment to be encountered and has been in successful operation for a minimum period of five (5) years prior to the bid date.

2. During the two (2) year warranty period (commencing on the date of final contract acceptance by the Owner), the Contractor shall repair, modify, or replace the equipment in a manner acceptable to the Owner, if in the opinion of the Owner, the operation of the equipment is unsatisfactory.

a. Normal wear or malfunctions due to neglect or abuse will not be considered justifiable reasons for unsatisfactory operation.

b. In the event the Owner determines the operation of the equipment to be unsatisfactory during this two (2) year period and the Contractor fails to correct the deficiencies within six (6) months from the time the Contractor is first notified in writing that such deficiencies exist, the Owner will make the necessary repair or replacement and file the necessary claims under

West Branch Regional Authority 11930-4 January 2026 the applicable provisions of Section 00600: Performance Bonds and any related warranties issued by the equipment manufacturer for the system.

C. Standard of Operation

1. All pumps must operate at specific speeds below the “Upper Limits of Specific

Speeds” established by the Hydraulic Institute for the respective pump standard so that the pumps may operate at the stated capacity, head, and suction lift with reasonable assurance of freedom from cavitation.

D. Factory Testing

1. Each centrifugal, submersible, rotary, air operated, reciprocating, rotadynamic or vertical turbine pump with a specified capacity exceeding 250 gallons per minute shall be assembled and shall be fully performance tested as a unit on water at the pump manufacturer's plant, at the manufacturer's expense, before shipment.

Tests shall consist of checking the unit at its rated speed, head, capacity, efficiency, brake horsepower, and at such other conditions of head and capacity to properly establish the performance curve. Certified copies of test reports shall be submitted to the Engineer by the Contractor. The Standards of the Hydraulic Institute shall govern the procedures and calculations for these tests for the respective pump standard. The Contractor shall notify the Owner and Engineer of the date for each performance test at least three (3) weeks in advance of said date.

E. General Design Criteria

1. All pumps, motors, and control equipment shall conform to the requirements set forth in the following pages as to capacity, head, and other requirements. Motors shall be of ample size to operate without overload through the entire range of the pump characteristic curve. Motors shall be of high efficiency design and, unless otherwise specified, shall be totally enclosed and have Class B minimum insulation and a service factor of 1.15. Ample means of lubrication shall be provided for all bearings and parts where required. Alemite industrial type fittings shall be used for grease lubrication. Where packing of mechanical seals is provided, water seal connections shall be provided. Pumps and motors shall perform the work intended without undue wear and undue heating. In many cases, pump motors will be powered with an invertor drive to provide variable speed operation. The Shop Drawings and the pump operating data for such driven devices shall be clearly marked to indicate allowable operating speeds and conditions.

2. Pump operational speeds indicated shall be considered maximum. Units operating at lesser rotative speeds may be considered, but pumps operating at more than the maximum speed specified will not be acceptable.

3. Centrifugal, vertical turbine and submersible pumps shall be selected so as not to

West Branch Regional Authority 11930-5 January 2026 employ the maximum impeller.

4. Pumps with external moving parts such as couplings, pulleys, belts, etc., shall have factory fabricated guards that conform to the requirements of ANSI B.15.1 and are approved by the Occupational Safety and Health Administration. Pumps with couplings shall have fabricated steel bases.

5. Pump and motor alignments shall be checked in accordance with the Standards of the Hydraulic Institute for each respective pump standard after installation to ensure that there will not be any strain transmitted to pumps.

6. The suction and discharge pipes of all pumps except submersible units shall be drilled and tapped for gauges. Each gauge connection shall be provided with a 1/4-inch male and female petcock connection. A 4-1/2-inch combination vacuum pressure gauge reading 15 feet vacuum to 30 feet pressure greater than static pressure shall be provided on each pump section. A 4-1/2-inch gauge reading 0 to 20 feet greater than the shut-off head of the particular pump shall be provided on each pump discharge. All gauges shall be enclosed in a rustproof case and connected with brass piping and fittings. Each gauge assembly shall be furnished with an appropriate shock absorber or snubber to protect gauge from shock damage. All gauges shall be liquid filled.

7. All pumps shall each be provided with a data plate. All data plates shall be of stainless steel suitably attached to the pump. Date plates shall contain the manufacturer's name, pump size and type, serial number, speed, impeller diameter, capacity and head rating, and other pertinent data. A special data plate shall be attached to the pump frame which shall contain identification of frame and bearing numbers.

8. All machine bolts, nuts, washers and screws used in the construction of the pumps shall be ASTM Type 304 or 316 stainless steel.

9. All pumping equipment must meet the specific requirements of other sections of the Specifications, and the Contractor is responsible for informing manufacturers of these requirements.

10. To assure availability of replacement parts, only those pumps whose normal standard of manufacture includes the specified features will be considered.

1.04 SERVICE REQUIREMENTS

A. General

1. The service of a competent representative of each respective pumping equipment manufacturer shall be provided for a minimum of one (1) eight-hour working day.

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B. Service Allocation

1. Provide all necessary assistance to ensure proper installation of the equipment supplied. Minimum service commitment shall be one (1) eight-hour day.

2. Provide all necessary assistance to verify the adequacy of installation and opera-tion of the equipment supplied. Minimum service commitment shall be one (1) eight-hour day.

3. Provide all necessary assistance to instruct the Owner's representatives in regard to the care, maintenance, and operation of the equipment supplied. This assistance shall be provided during the start-up and commissioning phases of the Project and the first year of facility operation following Project completion and Owner acceptance. Service periods shall be regulated by the Owner and/or Engineer to ensure conformance with the overall training schedule for the Project.

Minimum service commitment shall be one (1) eight-hour day.

C. The service requirements set forth above do not relieve each respective manufacturer of providing sufficient service to place the pumping equipment in satisfactory operation at no additional cost to the Owner.

1.05 SUBMITTALS

A. Product Information

1. The Contractor shall submit for approval complete characteristic curves of the pumps he proposes to furnish before fabrication is started, as well as a complete description of the pumps. This description shall include materials of construction for all fluid contact parts, mechanical seals, packing, and shaft. It shall also include the quantity and pressure of seal water, if required. Curves shall indicate capacity, head, required NPSH, efficiency, horsepower, maximum diameter impeller that can be installed in pump, and proposed impeller diameter for the application. Submittals for positive displacement pumps shall indicate volumetric efficiency, mechanical efficiency, speed, and NPSH requirements. Pumps driven through belts and pulleys shall also indicate impeller speed.

2. Details of pump materials and construction.

3. Modifications to the proposed pump installations shown on the Drawings which are required to properly accommodate the proposed pumping equipment.

4. List of exceptions taken to the Specifications and Drawings for the pumping equipment.

5. A complete set of Drawings, specifications, catalog cut sheets, and detailed descriptive material. This information shall identify all technical and performance

West Branch Regional Authority 11930-7 January 2026 requirements stipulated on the Drawings and in the specification.

6. Detailed information shall be submitted for all items such as hardware, motors, reducers, and bearings.

7. Vendor data shall be furnished to confirm the torque rating of the drive.

8. Manufacturer's recommended spare parts.

9. Information on equipment field erection requirements including total weight of assembled components and weight of each sub assembly.

10. A maintenance schedule showing the required maintenance, frequency of maintenance, lubricants and other items required at each regular preventative maintenance period, including all buy out items.

11. Process equipment, electrical requirements and schematic diagrams.

B. Shop Drawings

1. Refer to requirements in Section 01340: Shop Drawings, Product Data and

Samples. Refer to Section 1.05 for additional details.

C. Operation and Maintenance Information

1. Operation manuals shall detail the step-by-step procedures required for pump equipment startup, operation, and shutdown. Include in the operation manuals the manufacturer's name, model number, parts list, and brief description of all pumping equipment and their basic operating features. List in the maintenance manuals routine maintenance procedures, possible breakdowns and repairs, and troubleshooting guides. Maintenance manuals shall include piping and equipment layout and simplified wiring and control diagrams of the system as installed.

Manuals shall be approved prior to the training of Owner's personnel.

PART 2 - PRODUCTS

2.01 GRINDER PUMP

A. Furnish and install two each 2 hP grinder pumps, Model D3672LSG202, 208/230 V, Single Phase, 30 amp, 1.0 safety factor, 15 amp full load, 53 amp locked rotor, 105 degrees C thermal overload, stator winding class B, 25 feet power cord, discharge connection 1 ¼ inch diameter.

B. General

The Contractor shall provide labor, material, equipment, and incidentals required to

West Branch Regional Authority 11930-8 January 2026 provide 2 (QTY) centrifugal grinder pumps as specified herein. The pump modes covered in this specification are LSG/LSGX-Series single/three-phase grinder pumps. The pump furnished for this application shall be model D3_LSG as manufactured by Liberty Pumps.

C. Operating Conditions

Each submersible pump shall be rated at 2 hp, 230 volts, 1 phase, 60 Hz, 3450 RPM. The unit shall produce 37 GPM at 66 feet of total dynamic head.

The submersible pump shall be capable of handling residential and commercial sewage and grinding it to a fine slurry enabling it to be pumped over long distances in pipelines as small as 1.25” in diameter. The LSG-Series single-stage submersible pump shall have a shut-off head of 110 feet and a maximum flow of 50 GPM @ 10 feet of total dynamic head.

The LSGX-Series 2-stage submersible pump shall have a shut-off head of 185 feet and a maximum flow of 38 GPM @ 10 feet of total dynamic head.

D. Construction

Each centrifugal grinder pump shall be equal to the Certified LSG/LSGX-Series grinder pumps as manufactured by Liberty Pumps Bergen NY. The castings shall be constructed of class 25 cast iron. The motor housing shall be oil-filled to dissipate heat. Air-filled motors shall not be considered equal since they do not properly dissipate heat from the motor. All mating parts shall be machined and sealed with a Buna-N O-ring. All fasteners exposed to the liquid shall be stainless steel. The motor shall be protected on the top side with sealed cord entry plate with molded pins to conduct electricity eliminating the ability of water to enter internally through the cord. The motor shall be protected on the lower side with a dual seal arrangement. The first seal is a double lip seal molded in fluoroelastomer or Buna-N. The second/main seal shall be a unitized graphite impregnated silicon carbide hard face with stainless steel housings and spring.

The upper and lower bearing shall be capable of handling all radial thrust loads. The lower bearing shall have the additional ability to handle the downward axial thrust produced by the impeller and cutters by design of angular contact roller races. The pump housing shall be of the concentric design thereby equalizing the pressure forces inside the housing which will extend the service life of the seals and bearings. Additionally, there shall be no cutwater in the housing volute in order to discourage the entrapment of flowing debris. The pump shall be furnished with a stainless steel handle having a nitrile grip.

E. Electrical Power Cord

The submersible pumps shall be supplied with 25 feet of multi-conductor power cord (35 feet for external capacitor models). It shall be cord type SJOOW (1-phase), SEOOW (3-phase), or SOOW (external capacitor models), capable of continued exposure to the pumped liquid. The power cords shall be sized for the rated full load amps of the pump in accordance with the National Electric Code. The power cord shall not enter the motor housing directly but will conduct electricity to the motor by means of a watertight

West Branch Regional Authority 11930-9 January 2026 compression fitting cord plate assembly with molded pins to conduct electricity. This will eliminate the ability of water to enter internally through the cord via a damaged or wicking cord.

F. Motor

All motors shall be oil-filled and class B insulated NEMA B design rated for continuous duty. Since air-filled motors are not capable of dissipating heat as effectively, they shall not be considered equal. Single-phase motors shall be capacitor start/capacitor run and have an integral thermal overload switch in the windings for protecting the motor.

G. Bearings and Shaft

An upper radial and a lower angular contact ball bearing shall be required. The upper bearing shall be a single ball/race type bearing. The lower bearing shall be an angular contact heavy-duty ball/race type bearing, designed to handle axial grinder pump thrust loads both bearings shall be permanently lubricated by the oil, which fills the motor housing. The bearing system shall be designed to enable proper cutter alignment from shut off head to maximum load to 10 feet of TDH. The motor shaft shall be made of 300 series stainless steel and have a minimum diameter of 0.670”.

H. Seals

The pumps shall have a dual seal arrangement consisting of a lower and upper seal to protect the motor from the pumping liquid. The lower seal shall be fluoroelastomer OR Buna-N molded double lip seal, designed to exclude foreign material away from the main upper seal. The upper seal shall be a unitized graphite impregnated silicon carbide hard face seal with stainless steel housings and spring equal to Crane Type 6A. The motor plate/housing interface shall be sealed with a Buna-N O-ring.

I. Impeller

The impeller shall be an investment cast stainless steel impeller with pump out vanes on the back shroud to keep debris away from the seal area. It shall be keyed and bolted to the motor shaft.

J. Cutter Mechanism

The cutter and plate shall consist of 440 stainless steel with a Rockwell C hardness of 55-

60. The stationary cutter plate shall have specially designed orifices through it, which enable the slurry to flow through the pump housing at an equalized pressure and velocity.

The stationary cutter shall consist of V shapes to maximize cutting action and arc shape exclusion slots to outwardly eject debris from under the rotary cutter. The rotary cutter shall have (4) blades and be designed with a recessed area behind the cutting edge to prevent the accumulation and binding of any material between rotary cutter and the stationary cutter. The cutting system must incorporate close tolerances for optimum performance.

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Ring or radial cutters, or those that grind on the outside circumference, shall not be considered equal.

K. Pressure Sewer Applications

A redundant check valve assembly consisting of a curb stop and check valve must be installed between the pump discharge and the street main, as close to the public right-of-way as possible, on all pressure (force main) sewer installations to protection from system pressure. The curb stop valve is necessary to isolate the site from the pressure sewer while the check valve provides redundant protection against potentially detrimental backflow. All valves and fittings should be rated for at least 200 PSI service. See Liberty Pumps line of CSV-Series Curb Stop/Swing Check Valve Assemblies and CK-Series Connection Kit.

L. Paint

The exterior of the casting shall be protected with powder coat paint.

2.02 CONTROL PANEL

A. The pumps shall be controlled with an outdoor duplex control panel with three (3) float switches for control. Control Panel shall be AS-Series as supplied by Liberty Pumps and include:

1. HOA switch

2. NEMA 4X enclosure

3. Circuit breakers for branch circuit protection

4. Alarm beacon and horn

5. Pump run indicator lights

6. Auxiliary contacts

7. Three level control float switches

2.03 REMOTE ALARM

To be installed by Owner at the completion of the work.

2.04 WIRING

A. General:

1. All wiring, workmanship, and schematic wiring diagrams shall be in compliance with applicable standards and specifications set forth by the National Electric Code

(NEC).

2. All user serviceable wiring shall be type MTW or THW, 600 volts, and shall be color-coded as follows:

West Branch Regional Authority 11930-11 January 2026

a. Line and load circuits, AC or DC power - Black

b. AC control circuit less than line voltage - Red

c. DC control circuit - Blue

d. Interlock control circuit, from external source - Yellow

e. Equipment grounding conductor - Green

f. Current carrying ground - White

g. Hot with circuit breaker open - Orange

B. Wire Identification and Sizing:

1. Control circuit wiring inside the panel, with the exception of internal wiring of individual components, shall be 16-gauge minimum, type MTW or THW, 600 volts.

Motor branch wiring shall be 10-gauge minimum.

2. Motor branch conductors and other power conductors shall not be loaded above

60 degree C temperature rating, on circuits of 100 amperes or less, nor above

75 degree C on circuits over 100 amperes. Wires shall be clearly numbered at each end in conformance with applicable standards. All wire connectors in the control panel shall be of the ring tongue type with nylon insulated shanks. All wires on the subplate shall be bundled and tied or installed in duct. All wires extending from components mounted on door shall be terminated on a terminal block mounted on the back panel. All wiring outside the panel shall be installed in conduit.

C. Wire Bundles:

1. Control conductors connecting components mounted on the enclosure door shall be bundled and tied in accordance with good commercial practice. Bundles shall be made flexible at the hinged side of the enclosure. Adequate length and flex shall be allowed so that the door can swing to its fully open position without undue mechanical stress or abrasion on the conductors or insulation. Bundles shall be clamped and held in place with mechanical fastening devices on each side of the hinge.

D. Conduit:

1. All conduit and fittings shall be UL listed.

2. Liquid tight flexible metal conduit shall be constructed of a smooth, flexible, galvanized steel core with a smooth abrasion resistant, liquid tight, polyvinyl chloride cover.

3. Conduit shall be supported in accordance with Articles 346, 347, and 350 of the National Electric Code.

4. Conduit shall be sized according to the National Electric Code.

E. Grounding:

West Branch Regional Authority 11930-12 January 2026

1. The pump control manufacturer shall ground all electrical equipment to the enclosure back panel. The mounting surface of all ground connections shall have any paint removed before making final connections.

2. The Contractor shall provide an earth driven ground connection to the control panel at the main ground lug in accordance with the National Electric Code (NEC).

2.04 SPARE PARTS AND SPECIAL TOOLS

None.

2.05 FASTENERS

A. All fasteners (anchor bolts, bolts, nuts, washers, screws, etc.) shall be ASTM Type 304 or

316 stainless steel.

PART 3 - EXECUTION

3.01 SHIPPING AND STORAGE

A. Each pump assembly (i.e., pump, motor and baseplate) shall be factory assembled and shipped as a complete unit.

B. The Contractor shall be responsible for the off-loading, storage and installation of all components of the pumping equipment in accordance with the Specifications, Drawings and the recommendations of the respective manufacturers.

3.02 EQUIPMENT INSTALLATION

A. Pump Installation - Install pumping equipment and appurtenances in the position indicated and in accordance with the manufacturer's written instructions. Provide all appurtenances required for a complete and operating pumping system, including such items as piping, conduit, valves, wall sleeves, wall pipes, concrete foundations, anchors, grouting, pumps, drivers, power supply, seal water units, and controls.

3.03 PAINTING

A. Pumps and motors shall be thoroughly cleaned, primed, and given two (2) finish coats of paint at the factory in accordance with the recommendations of the manufacturer. Field painting required for ferrous surfaces not finished at the factory is specified in Section 09900: Painting.

3.04 ELECTRICAL CONNECTIONS AND CONTROLS

A. Wiring and conduits for electric power, control and instrumentation shall, unless specified otherwise herein or on the Drawings, be provided under Division 16: Electrical.