1 Scope

NOTE This standard governs the procurement, specification, factory assembly, and field installation of packaged pump and lift station assemblies that lift wastewater or stormwater where gravity outfall is not available or is cost-prohibitive. (1.1)

NOTE A packaged station is a factory-assembled unit furnished as a complete, pre-engineered package. (1.2)

NOTE The package comprises the wet well basin, pumps, internal discharge piping, guide-rail removal system, valve vault, level controls, control panel, ventilation provisions, and the connection points to the influent gravity sewer and the discharge force main. (1.3)

NOTE The scope of this standard begins at the influent gravity sewer connection to the wet well and ends at the force main connection flange at the station discharge. (1.4)

NOTE The force main pipe, fittings, thrust restraint, and discharge-end reconnection are site-utility work; this standard governs the packaged equipment assembly and its two connection points only. (1.5)

NOTE This standard applies to the following service types, each of which changes pump selection, basin material, and hazardous-area treatment. (1.6)

Raw (unscreened) sanitary sewage, including domestic and commingled light-industrial waste.
Screened or settled effluent downstream of a building treatment or interceptor unit.
Stormwater and surface drainage where gravity discharge is unavailable.

NOTE Stormwater stations carry no sewage gas and are therefore not classified under NFPA 820; all other sizing, control, ventilation-airflow, and testing requirements of this standard still apply to them. (1.7)

NOTE The following work is excluded from this standard and is governed elsewhere. (1.8)

Single-building sump pumps, sewage ejectors, and integral-basin grinder pumps: Sump And Sewage PumpsSump and Sewage PumpsResolves to the current edition.sync/sump-and-sewage-pumps.
Site gravity sewer mains, manholes, service laterals, and the force main pipe external to the station: Sanitary Sewer SystemsSanitary Sewer Systems (Site)Resolves to the current edition.sync/sanitary-sewer-systems.
Upstream storm drainage piping, catch basins, inlets, and detention facilities: Storm DrainageStorm DrainageResolves to the current edition.sync/storm-drainage.
Potable-water pressure-boosting pump skids: Domestic Water Booster PumpsDomestic Water Booster Pump SystemsResolves to the current edition.sync/domestic-water-booster-pumps.
Fire pump assemblies and fire-protection water supply: Fire PumpsFire PumpsResolves to the current edition.sync/fire-pumps.
HVAC chilled-water, condenser-water, and hydronic circulating pumps: HVAC PumpsHVAC PumpsResolves to the current edition.sync/hvac-pumps.
Municipal wastewater treatment-plant process equipment and public right-of-way sewer extensions and force mains, which follow AHJ municipal design standards.

1.9 Station Configuration

1.9.1 The packaged station configuration shall be selected to match the design flow and the redundancy required by the Authority Having Jurisdiction.

NOTE Configuration is the first decision because it cascades into basin size, panel logic, and the standby-power interface. A simplex station has no redundancy and is limited to small, low-consequence service; duplex (one duty, one standby, alternating) is the default for commercial and institutional service; triplex and larger stations serve campus and industrial flows with lead/lag/standby logic. (1.9.2)

1.9.3 Station configuration shall be as selected below.

Station configurationradio

○ Simplex (single pump, no standby) — small commercial / residential only

● Duplex (duty/standby, alternating)

○ Triplex (lead/lag/standby)

○ Quadruplex (multi-pump campus / industrial)

1.9.4 Stations serving more than a single building shall be duplex or larger so that the station retains pumping capacity with one pump out of service.

1.9.5 Simplex stations shall not be used where an overflow or backup would discharge sewage to an occupied building, a watercourse, or a public way.

1.9.6 Pump type shall be selected for the service and solids loading of the station.

Pump typeradio

● Submersible solids-handling (non-clog) centrifugal

○ Submersible vortex (recessed) impeller

○ Submersible grinder

○ Dry-pit / vertical non-clog centrifugal

1.9.7 Submersible pumps in a packaged basin are the default for site lift stations; dry-pit configurations shall be used only where the design head, flow, or maintenance requirements justify the larger above-grade structure.

2 Referenced Standards

2.1 Equipment, materials, and installation shall comply with the latest adopted edition of each of the following unless a specific edition is cited.

2.2 Where referenced standards conflict, the more stringent requirement shall govern unless the Engineer of Record directs otherwise in writing.

NOTE The 10 States Standards are a recommended-practice design reference adopted by many state environmental agencies as de facto AHJ criteria; they are cited here for firm-capacity, wet-well-volume, cycle-time, and velocity design rules, not as a code. (2.3)

Standard	Title
ANSI/HI 9.8-2018	Rotodynamic Pumps for Pump Intake Design
ANSI/HI 1.1-1.2	Rotodynamic (Centrifugal) Pumps — Nomenclature and Definitions
ANSI/HI 1.3	Rotodynamic (Centrifugal) Pumps for Design and Application
ANSI/HI 1.4	Rotodynamic (Centrifugal) Pumps for Installation, Operation, and Maintenance
ANSI/HI 11.6	Rotodynamic Submersible Pumps — Hydraulic, Hydrostatic, Mechanical, and Electrical Acceptance Tests
NFPA 820	Standard for Fire Protection in Wastewater Treatment and Collection Facilities
NFPA 70 (NEC)	National Electrical Code (Articles 430, 501, 700/701)
UL 508A	Industrial Control Panels
UL 778	Motor-Operated Water Pumps
ASTM D3753	Glass-Fiber-Reinforced Polyester Manholes and Wet Wells
ASTM C478	Circular Precast Reinforced Concrete Manhole Sections and Tops
ASTM C443	Joints for Concrete Pipe and Manholes Using Rubber Gaskets
ASTM F714	Polyethylene (PE) Plastic Pipe (DR-PR) Based on Outside Diameter
AASHTO HS-20 (H-20)	Standard Specification for Highway Bridges — H-20 Traffic Loading
NEMA MG 1	Motors and Generators
IPC Chapter 7 / Section 712	International Plumbing Code — Sumps and Ejectors
IAPMO/UPC Chapter 7	Uniform Plumbing Code — Sanitary Drainage Systems
10 States Standards	Recommended Standards for Wastewater Facilities (GLUMRB)

3 Submittals

3.1 Action Submittals

3.1.1 The Contractor shall submit the following action submittals for review before fabrication:

Product data for pumps, motors, and the control panel, with model designations, performance curves, and listing marks.
A station pump curve overlaid on the calculated system head curve, showing the duty point and the firm-capacity operating point with the largest pump out of service.
Wet well sizing calculations showing active storage volume, minimum cycle time, and starts per hour for each motor.
Shop drawings of the basin, valve vault, piping, guide-rail system, and access hatches, with the NFPA 820 hazardous-area boundaries delineated.
A control panel schematic and bill of material showing duty/standby alternation, overload and phase-loss protection, alarm outputs, and SCADA/BAS dry contacts.
Electrical one-line diagram including the standby-power interface, transfer means, and conductor and conduit schedule.

Action submittals requiredcheckbox

☑ Pump, motor, and panel product data with listing marks

☑ Station vs. system head curve with firm-capacity point

☑ Wet well sizing / cycle-time calculations

☑ Basin, valve vault, and piping shop drawings with NFPA 820 zones

☑ Control panel schematic and bill of material

☑ Electrical one-line with standby-power interface

3.2 Informational Submittals

3.2.1 The Contractor shall submit the following informational submittals:

Factory test reports per ANSI/HI 11.6, including the hydrostatic basin test and the pump performance test.
Manufacturer certification that the control panel is UL 508A listed and that pump motors are UL 778 listed.
Hazardous-area classification documentation confirming explosion-proof or intrinsically safe equipment in classified zones.
Field acceptance test plan and reporting forms.

Informational submittals requiredcheckbox

☑ Factory test reports (ANSI/HI 11.6)

☑ UL 508A panel and UL 778 motor certifications

☑ NFPA 820 hazardous-area classification documentation

☑ Field acceptance test plan

3.3 Closeout Submittals

3.3.1 The Contractor shall submit the following closeout submittals before substantial completion:

Operation and maintenance manuals for pumps, motors, controls, and the level-sensing system.
As-built drawings showing installed elevations, start/stop setpoints, and the alarm activation level.
Manufacturer warranty documents for the station, pumps, and control panel.
Record of the field acceptance test, signed by the Contractor and witnessed by the Engineer.

Closeout submittals requiredcheckbox

☑ O&M manuals for pumps, motors, and controls

☑ As-built drawings with setpoints and alarm level

☑ Warranty documents

☑ Witnessed field acceptance test record

4 Quality Assurance

4.1 The station shall be furnished by a single manufacturer that is responsible for the complete packaged assembly, including the basin, pumps, valve vault, controls, and their coordinated performance.

NOTE Single-source responsibility prevents the split-scope failures that occur when basin, pumps, and panel are procured separately and no party owns the interfaces between them. (4.2)

4.3 The pump manufacturer shall have produced submersible wastewater pumps of the specified type and size for not less than five years.

4.4 The control panel shall be assembled by a UL 508A listed panel shop and shall bear the UL 508A listing mark.

4.5 Pump motors shall be UL 778 listed for the service.

4.6 Welding on steel structures and steel discharge piping shall be performed by welders qualified under a recognized procedure.

4.7 The manufacturer shall hold a pre-installation conference with the installing contractor to coordinate basin setting, anti-flotation, electrical service, and the standby-power interface.

5 Environmental and Service Conditions

5.1 Hazardous Area Classification

NOTE Raw sewage and screened effluent wet wells generate hydrogen sulfide and methane and shall be classified and equipped in accordance with NFPA 820. (5.1.1)

NOTE The wet well interior and the space within 1 ft of every opening are Class I, Division 1; the space extending 3 ft to 5 ft around openings at grade is Class I, Division 2. This is the single most commonly omitted life-safety requirement in pump station specifications, and omitting it produces field RFIs and rework. (5.1.2)

5.1.3 All electrical equipment located within the Class I, Division 1 wet well — including level sensors, junction boxes, and conduit — shall be explosion-proof or intrinsically safe and shall be installed with listed conduit seals at the boundary.

5.1.4 Electrical equipment within the Class I, Division 2 zone around openings shall be rated for that classification.

NOTE Stormwater wet wells do not generate sewage gas and are not classified under NFPA 820; equipment in stormwater wet wells shall be rated NEMA 6P for submergence but need not be explosion-proof. (5.1.5)

5.1.6 The hazardous-area boundaries shall be shown on the shop drawings and reconciled against the electrical equipment ratings before fabrication.

5.2 Ventilation

5.2.1 Classified wet wells shall be continuously force-ventilated to reduce the extent of the hazardous area and to limit hydrogen sulfide accumulation.

5.2.2 Hydrogen sulfide is heavier than air and settles at the wet well floor; exhaust intake must therefore be drawn from the floor level, not the top of the basin.

5.2.3 Continuous ventilation shall provide not less than 30 air changes per hour, or 6 air changes per hour continuous plus 30 air changes per hour when the space is entered, in accordance with NFPA 820 and the 10 States Standards.

5.2.4 Ventilation exhaust shall be drawn from the floor level of the wet well.

Wet well ventilation rate (continuous)range

air changes/hour

630

Default: 30 air changes/hour

5.3 Corrosion Protection

5.3.1 Raw sewage wet wells generate hydrogen sulfide that attacks concrete and steel; the wet well interior shall be protected against sulfide corrosion.

NOTE Unlined concrete wet wells in raw sewage service deteriorate within five to ten years. Fiberglass and HDPE basins are inherently resistant; concrete basins require a protective lining. (5.3.2)

5.3.3 Concrete wet wells in sewage or effluent service shall be lined with a 100% solids epoxy or polyurea coating applied to the manufacturer's specified thickness.

5.3.4 Wet well interior coating shall be selected as below.

Concrete wet well interior protectionradio

● 100% solids epoxy lining

○ Polyurea lining

○ HDPE / PVC liner sheet

○ Not applicable (fiberglass or HDPE basin)

6 Wet Well and Basin

6.1 Basin Material

6.1.1 The wet well basin material shall be selected for the service, depth, groundwater condition, and traffic loading of the installation.

NOTE Fiberglass (ASTM D3753) is the most common packaged-unit basin and resists sulfide corrosion inherently. HDPE (ASTM F714) suits high-groundwater sites. Precast concrete (ASTM C478) suits large-diameter wet wells but requires a protective lining in sewage service. (6.1.2)

6.1.3 Basin material shall be as selected below.

Wet well basin materialradio

● Fiberglass (FRP) per ASTM D3753

○ HDPE per ASTM F714

○ Precast concrete per ASTM C478

6.1.4 Precast concrete basin joints shall use rubber gaskets conforming to ASTM C443.

6.1.5 The basin diameter shall be sized to house the selected pumps, guide rails, and level controls with the clearances required by ANSI/HI 9.8-2018.

Wet well basin inside diameterselect

24

30

36

48

60

72

96

6.2 Anti-Flotation and Structure

6.2.1 The basin shall be designed and ballasted to resist flotation under the maximum credible groundwater level with the wet well empty.

NOTE A buried empty basin is buoyant; a flotation collar, anti-flotation ballast, or structural anchorage sized to the local water table prevents the basin from lifting out of the ground. (6.2.2)

6.2.3 The basin and its top slab shall be designed for the burial depth and surcharge loads of the installation.

6.2.4 Where the station is located in a paved area, a driveway, or any area where vehicle access is possible, all basin top slabs, covers, and access hatches shall be rated for AASHTO H-20 traffic loading.

6.2.5 Standard fiberglass basins are not H-20 rated by default; the traffic-rated cover and reinforced basin shall be specified explicitly where required.

Cover and top slab traffic ratingradio

○ Pedestrian / non-traffic

● AASHTO H-20 traffic-rated

6.3 Access hatches shall be sized to allow removal of each pump on its guide rail without entering the wet well.

6.4 Access hatches over a classified wet well shall be gasketed and lockable and shall be coordinated with the hazardous-area boundary.

6.5 Hatch material shall be aluminum or stainless steel selected for the corrosive wet well environment.

7 Pumps and Hydraulic Design

7.1 Firm Capacity

7.1.1 The station shall provide firm pumping capacity: with the largest pump out of service, the remaining pump or pumps shall convey the design peak hourly flow.

NOTE This is the governing rule of the 10 States Standards and of most state AHJs. A station sized only at total installed capacity, without checking firm capacity, will be rejected at permit review or redesigned after bid. (7.1.2)

7.1.3 Pumps shall be selected so that the firm-capacity operating point falls within the manufacturer's allowable operating region on the pump curve.

7.1.4 The design peak flow shall be established for the station.

Design peak flowrange

gpm

202000

Default: 250 gpm

Per drawings

7.1.5 The total dynamic head shall be established from the static lift plus the friction losses of the discharge piping and force main.

Total dynamic head (TDH)range

ft

15200

Default: 50 ft

Per drawings

7.2 Solids Handling

NOTE Pumps in raw sewage service shall pass solids without clogging, and non-grinder pumps shall provide a minimum spherical solids passage of 3 in. (7.2.1)

NOTE A 3 in spherical free passage is the municipal sewage benchmark for non-clog and vortex pumps. Grinder pumps macerate solids instead and are used for low-flow pressure-sewer service where a small-diameter force main is required. (7.2.2)

7.2.3 Pump free-passage or grinder capability shall be as selected for the service.

Solids-handling capabilityradio

● Non-clog, 3 in minimum spherical solids passage

○ Vortex (recessed) impeller, full solids passage

○ Grinder (maceration) for pressure-sewer service

○ Stormwater non-clog (debris passage)

7.3 Wet Well Volume and Cycling

7.3.1 The active wet well volume shall be sized to limit pump starts so that motors are not damaged by short cycling.

NOTE Excessive cycling overheats motors and fails seals prematurely. The active storage between the pump-on and pump-off levels sets the minimum cycle time. The 10 States Standards limit starts to about 6 per hour for motors above 10 HP and about 12 per hour for smaller motors. The active volume in gallons is approximately V = Q / (4 N), where Q is the single-pump flow in gpm and N is the maximum starts per hour for one pump. (7.3.2)

7.3.3 The active volume shall be calculated for the selected pumps and the maximum allowable starts per hour, and shall be confirmed in the sizing submittal.

7.3.4 Maximum allowable starts per hour shall be as selected for the motor size.

Maximum pump starts per hour (per pump)select

6

8

10

12

7.4 Motors

NOTE Pump motors shall conform to NEMA MG 1 for insulation class, service factor, and enclosure rating, and shall be rated for continuous submerged operation. (7.4.1)

7.4.2 Motor horsepower shall be established for the duty point.

Pump motor horsepower (each)range

HP

175

Default: 10 HP

Per drawings

7.4.3 Motor supply voltage and phase shall be selected for the motor size and the available service.

Motor voltage and phaseradio

○ 120/240V 1Φ (simplex, up to 2 HP only)

○ 208V 3Φ

○ 240V 3Φ

● 480V 3Φ

7.4.4 Single-phase 120/240V supply shall be used only for simplex stations with motors not exceeding 2 HP; motors above 20 HP shall be 480V 3Φ.

8 Discharge Piping and Valve Vault

8.1 Each pump discharge shall be provided with a check valve and an isolation valve located in an accessible dry valve vault, not submerged in the wet well.

NOTE Submerging valves in the wet well makes them unmaintainable and exposes them to sulfide corrosion and rag fouling. A separate dry valve vault is required so that valves can be inspected and serviced without entering the classified wet well. (8.2)

8.3 A check valve shall be installed on each pump discharge to prevent backflow when the pump stops.

8.4 An isolation (shutoff) valve shall be installed downstream of each check valve so that either pump can be isolated while the other remains in service.

8.5 A pressure gauge and a discharge cleanout shall be provided in the valve vault.

8.6 The valve vault shall be configured as selected.

Valve vault configurationradio

○ Integral vault (cast into the basin assembly)

● Separate adjacent precast vault

8.7 Internal discharge piping and guide-rail components in contact with wastewater shall be of corrosion-resistant material suitable for the service.

Discharge piping and fitting material (wetted)radio

○ Ductile iron, interior lined

○ 304 stainless steel

● 316 stainless steel

8.8 Force Main Connection

8.8.1 The force main connection shall be a flanged or restrained-joint termination at the station discharge, delivered to the limit of this standard's scope.

8.8.2 The discharge force main shall be sized so that the velocity is not less than 2.0 fps at average daily flow for self-cleaning and not more than 10 fps to limit water hammer.

NOTE Velocity must be checked at average daily flow, not only at peak. An oversized force main that cannot reach 2 fps at average flow accumulates solids, grease, and sulfide, causing odor complaints and pipe corrosion. (8.8.3)

NOTE The force main pipe, fittings, thrust restraint, and discharge-end reconnection are outside this standard and shall be coordinated with Sanitary Sewer SystemsSanitary Sewer Systems (Site)Resolves to the current edition.sync/sanitary-sewer-systems. (8.8.4)

9 Level Controls

9.1 The level-control technology shall be selected for the reliability the service demands, not for lowest first cost.

NOTE Tethered float switches are inexpensive but jam on rags and debris in raw sewage; sealed floats are more reliable; non-contact ultrasonic or radar transducers and bubbler systems are the most reliable and are preferred for municipal-grade duplex service. Specifying "floats or equal" in raw sewage invites the least reliable option. (9.2)

9.3 The level-control type shall be as selected below.

Level control technologyradio

● Submersible pressure transducer

○ Ultrasonic / radar (non-contact) transducer

○ Bubbler system

○ Sealed float switches

○ Tethered float switches (small simplex only)

9.4 A high-water alarm float shall be provided as an independent backup to the primary level-sensing device regardless of the primary technology selected.

9.5 Level sensors located in the classified wet well shall be intrinsically safe and installed with the required conduit seals.

9.6 Pump start and stop setpoints and the high-water alarm level shall be field-set and recorded on the as-built drawings.

10 Control Panel

NOTE The control panel shall be a UL 508A listed assembly in a NEMA 4X corrosion-resistant enclosure of stainless steel or fiberglass, suitable for outdoor installation. (10.1)

NOTE A NEMA 4X enclosure resists the corrosive, washdown, and weather exposure typical of an exterior station. The panel houses the motor controls, the duty/standby logic, protection devices, and the alarm and telemetry outputs. (10.2)

10.3 The panel shall provide automatic duty/standby alternation so that pump run time is equalized across the pumps.

10.4 The panel shall provide a hand-off-auto (HOA) selector switch for each pump.

10.5 The panel shall provide an elapsed-time meter and a run indicator for each pump.

10.6 The panel shall provide motor overload and short-circuit protection for each pump in accordance with NEC Article 430.

10.7 On three-phase services the panel shall provide phase-loss and phase-reversal protection.

10.8 The panel shall provide a high-water alarm with an external audible horn and visual beacon.

10.9 The alarm notification path shall be coordinated so that an unattended station alarm reaches an operator; the panel shall provide dry contacts for connection to SCADA, BAS, or an auto-dialer.

NOTE A local horn and light that no one hears at night is not a notification path. The alarm output must be tied to a monitored system. (10.10)

10.11 The panel telemetry interface shall be as selected.

Alarm notification / telemetry interfaceradio

● Dry contacts to SCADA

○ Dry contacts to building automation system (BAS)

○ Cellular / telephone auto-dialer

○ Local audible/visual alarm only (small simplex)

10.12 Enclosure rating shall be confirmed for the installation.

Control panel enclosure ratingradio

● NEMA 4X stainless steel

○ NEMA 4X fiberglass

11 Standby Power

11.1 Most AHJs require standby power for duplex and larger stations; the standby-power interface shall be specified explicitly to avoid a bid clarification.

NOTE The specification frequently omits whether the station requires a generator receptacle with manual transfer, an automatic transfer switch, or an integral engine-driven generator. The interface, transfer means, and connection details must be coordinated with Emergency And Standby PowerEmergency and Standby Power SystemsResolves to the current edition.sync/emergency-and-standby-power. (11.2)

11.3 The standby-power interface shall be as selected for the station.

Standby power interfaceradio

● Generator receptacle with manual transfer switch

○ Automatic transfer switch (permanent generator)

○ Integral engine-driven generator

○ None (overflow storage / AHJ waiver)

NOTE Standby-power connection and transfer equipment shall be coordinated with Emergency And Standby PowerEmergency and Standby Power SystemsResolves to the current edition.sync/emergency-and-standby-power, and the conductors and raceways shall comply with Raceways And ConduitRaceways and ConduitResolves to the current edition.sync/raceways-and-conduit. (11.4)

11.5 The station shall be grounded and bonded in accordance with Grounding And BondingGrounding and Bonding for Electrical SystemsResolves to the current edition.sync/grounding-and-bonding and NEC requirements for the classified location.

12 Testing

12.1 Factory Testing

12.1.1 The wet well basin shall be hydrostatically tested at the factory at 1.5 times the design head with no leakage before shipment.

12.1.2 Each pump shall be performance-tested at the factory per ANSI/HI 11.6 to confirm the specified flow and head at the duty point.

12.1.3 The control panel shall receive a factory functional test confirming duty/standby alternation, protection devices, and alarm outputs.

12.1.4 Factory test reports shall be submitted before the station is shipped to the site.

12.2 Field Acceptance Testing

12.2.1 After installation, the station shall be operationally tested under field conditions to confirm correct control and alarm behavior.

NOTE The field test confirms the start and stop levels, the alternator sequence, the high-water alarm activation level, and the alarm notification path — the items that cannot be verified at the factory because they depend on the installed elevations and the site telemetry connection. (12.2.2)

12.2.3 The field test shall confirm the pump start and stop levels at the installed elevations.

12.2.4 The field test shall confirm duty/standby alternator sequencing across successive cycles.

12.2.5 The field test shall confirm the high-water alarm activation level and the alarm notification to the monitored system.

12.2.6 Where a discharge force main is within the station scope, it shall be air-tested at 5 psi for 15 minutes with no loss before commissioning.

12.2.7 The field acceptance test shall be witnessed by the Engineer and recorded on the closeout submittal.

Field acceptance tests to be witnessedcheckbox

☑ Pump start/stop levels at installed elevations

☑ Duty/standby alternator sequencing

☑ High-water alarm level and notification

☐ Force main air test (5 psi, 15 min)

13 Installation

NOTE The station shall be installed in accordance with the manufacturer's instructions, ANSI/HI 1.4, and the approved shop drawings. (13.1)

13.2 Excavation, bedding, backfill, and anti-flotation ballast shall be performed in accordance with EarthworkEarthworkResolves to the current edition.sync/earthwork and the basin manufacturer's burial requirements.

13.3 The basin shall be set plumb on a compacted, level bearing surface and ballasted before backfilling to prevent flotation.

NOTE Wet well intake geometry, minimum submergence, and floor clearance shall be installed in accordance with ANSI/HI 9.8-2018 to prevent vortexing and air entrainment. (13.4)

NOTE The intake design standard sets the minimum floor clearance (about 0.3 times the pump inlet diameter) and the minimum submergence taken from the pump curve; violating these draws air into the pump and reduces capacity. (13.5)

13.6 Pumps shall be installed on the guide-rail system so that each pump seats on its discharge connection by gravity and can be removed without entering the wet well.

13.7 Electrical raceways and conduit shall be installed per Raceways And ConduitRaceways and ConduitResolves to the current edition.sync/raceways-and-conduit, with conduit seals at every hazardous-area boundary crossing.

13.8 The influent gravity sewer connection shall be made watertight at the basin penetration, and the connection to the upstream sewer shall be coordinated with Sanitary Sewer SystemsSanitary Sewer Systems (Site)Resolves to the current edition.sync/sanitary-sewer-systems.

13.9 After installation the station shall be cleaned of construction debris before the field acceptance test.

14 Delivery, Storage, and Handling

14.1 The packaged station shall be delivered with pumps, controls, and accessories protected from damage and from the weather.

14.2 The basin shall be handled and lifted only at the manufacturer's designated lifting points.

14.3 The control panel shall be stored indoors or under weather protection and shall be kept dry until it is mounted and energized.

14.4 Pumps and motors shall be stored upright and protected from contamination until installation.

15 Warranty

15.1 The manufacturer shall warrant the complete packaged station against defects in materials and workmanship for not less than one year from the date of substantial completion.

15.2 The pump and motor warranty period shall be as selected for the procurement.

Pump and motor warranty periodradio

○ 1 year

● 2 years

○ 3 years

○ 5 years

15.3 The warranty shall cover the coordinated performance of the assembly under single-source responsibility, not the individual components in isolation.

16 Spare Parts

16.1 The manufacturer shall furnish the spare parts and special tools needed to maintain the station through the warranty period.

16.2 Spare parts to be furnished shall be as selected below.

Spare parts to furnishcheckbox

☑ One spare seal kit per pump model

☑ One set of spare level floats / sensor

☑ Spare control panel fuses and pilot devices

☐ One spare check valve flapper / disc

☐ Guide-rail lifting chain or cable

16.3 A complete spare pump shall be furnished where the AHJ requires on-site redundancy beyond the installed standby pump.