1 Scope
NOTE This standard covers the selection, performance, construction, controls, installation, testing, and start-up of packaged sump pumps, sewage ejector pumps, and grinder pumps, together with their basins, covers, level controls, alarms, and the valves and connections that integrate them into the building drainage system. (1.1)
NOTE The work extends from the inlet at the basin, through the pump and its discharge piping with check and isolation valves, to the point of connection with the building gravity drainage system, and includes the level controls, the high-water alarm, and the electrical connection to a disconnect provided under the electrical scope. (1.2)
NOTE Pumped drainage exists because not every fixture or drain can reach the sewer by gravity. (1.3)
NOTE A basement restroom below the building drain invert, a below-grade mechanical room with floor drains, an elevator pit, a foundation underdrain, and a storm sump all share the same problem: liquid collects below the gravity drain and must be lifted to it, and the pump that does the lifting is the single point of failure for everything that drains to that basin. (1.4)
NOTE A failed sump pump floods a basement; a failed sewage ejector backs raw sewage into occupied space and releases sewer gas; this standard is written to close the gap between a code-minimum installation and one that runs reliably, fails safely, and can be serviced without entering the basin. (1.5)
NOTE The service and the solids the pump must pass govern almost every other decision in this standard, so the pump type and service are established first and the remaining requirements follow from it. (1.6)
2 Referenced Standards
2.1Materials, equipment, and installation shall comply with the latest adopted edition of the following standards and codes unless a specific year is cited elsewhere in the contract documents.
| Standard |
Title |
| IPC |
International Plumbing Code (Chapter 7 — Sanitary Drainage; Section 712 — Sumps and Ejectors) |
| UPC |
Uniform Plumbing Code (Chapter 7 — Sanitary Drainage Systems; building subdrains and sewage pumps) |
| UL 778 |
Motor-Operated Water Pumps (submersible and nonsubmersible water pumps) |
| UL 508A |
Industrial Control Panels (pump control panels) |
| 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 for Hydraulic Performance, Hydrostatic Pressure, Mechanical, and Electrical Acceptance Tests |
| SSPMA |
Sump and Sewage Pump Manufacturers Association — pump performance and rating standards |
| ASTM D4097 |
Standard Specification for Contact-Molded Glass-Fiber-Reinforced Thermoset Resin Tanks (fiberglass basins) |
| ASTM F1759 |
Standard Practice for Design of High-Density Polyethylene (HDPE) Manholes for Subsurface Applications (polyethylene basins) |
| ASTM C478 |
Standard Specification for Circular Precast Reinforced Concrete Manhole Sections (concrete basins) |
| ASME A112.6.3 |
Floor and Trench Drains (basin and cover hardware where applicable) |
| NSF/ANSI 46 |
Evaluation of Components and Devices Used in Wastewater Treatment Systems (effluent applications) |
| NEC (NFPA 70) |
National Electrical Code — Article 430 (Motors) and Article 700/701 (emergency and legally required standby power) |
| NEMA MG 1 |
Motors and Generators |
2.2Where the contract documents or a referenced standard conflicts with the adopted building or plumbing code, the more stringent requirement governs unless the Engineer of Record directs otherwise in writing.
2.3Where the project is located in a jurisdiction that has adopted the Uniform Plumbing Code rather than the International Plumbing Code, references to IPC chapter and section numbers shall be understood to refer to the equivalent UPC provisions.
2.4The Contractor shall confirm the adopted code edition and any local amendments governing sumps, ejectors, and pump venting with the Authority Having Jurisdiction before procuring equipment.
3 Submittals
3.1 Action Submittals
3.1.1Contractor shall submit the following for the Engineer's review and comment before procurement or installation of any pump, basin, or control.
3.1.2No substitution for specified equipment shall be procured until the substitution has been reviewed and accepted in writing.
- Pump product data for each pump type, including the certified pump performance curve showing head versus flow, the design operating point (gpm at the design total dynamic head), the solids-handling size, motor horsepower and electrical characteristics, and the UL listing
- Basin product data, including basin material, inside diameter, depth, inlet and discharge penetration locations, anti-flotation provisions, and the cover type with its gas-tight rating where sewage service is specified
- Level control and alarm data, including the control type (tethered float, sealed mechanical float, or pressure transducer), the number of control levels, the high-water alarm device, and the alarm dry-contact rating for connection to the building automation system
- Control panel data, including the simplex or duplex configuration, the alternator where duplex is specified, the motor starting and overload protection, the UL 508A listing, and the enclosure NEMA rating
- Guide-rail removal system data where specified, including the rail material, the discharge connection (rail) elbow, and the lifting chain or cable
- Discharge piping accessory data, including the check valve and the isolation (full-open) valve for each pump
- Wiring diagram showing pump, float or transducer, alarm, control panel, and the field connection to the disconnect and to the building automation system
☑ Pump product data with certified performance curve and operating point
☐ Basin product data (material, dimensions, penetrations, cover, anti-flotation)
☐ Level control and alarm data (control type, levels, alarm dry-contact rating)
☐ Control panel data (simplex/duplex, alternator, UL 508A, enclosure rating)
☐ Guide-rail removal system data (where specified)
☐ Check valve and isolation valve product data (per pump)
☐ Wiring diagram (pump, controls, alarm, BAS connection, disconnect)
3.2 Closeout Submittals
3.2.1Contractor shall provide the following at substantial completion before the pumping system is accepted.
- Operation and maintenance manuals for each pump, basin, control panel, and alarm, including the manufacturer's maintenance schedule, recommended spare parts list, and troubleshooting guidance
- A field start-up report for each pump, signed by the manufacturer's representative or the start-up technician, recording the measured pump-on and pump-off levels, the high-water alarm level, the measured discharge flow or run time, the motor running amperage compared to nameplate, and confirmation of alternation for duplex systems
- As-built drawings or marked-up contract drawings showing the installed basin location, inlet and discharge invert elevations, control level settings, and any deviations from the contract documents
- Manufacturer warranty documentation for each pump, control panel, and alarm
- A record of the level control setpoints (pump-on, pump-off, lag-pump-on for duplex, and high-water alarm) as left at start-up
☑ Operation and maintenance manuals with spare parts list
☑ Field start-up report (levels, amperage, alternation) signed
☑ As-built drawings with invert elevations and control settings
☑ Manufacturer warranty documentation
☑ Record of level control setpoints as left at start-up
4 Quality Assurance
4.1 Listing and Rating
4.1.1Each pump and its motor shall be listed under UL 778 for the service in which it is installed.
4.1.2Pumps shall be rated and tested in accordance with the Sump and Sewage Pump Manufacturers Association (SSPMA) standards or the applicable ANSI/HI performance standard, and the certified performance curve shall be furnished for the specific pump model.
4.1.3Sewage ejector and grinder pumps that receive the discharge of water closets shall be of a model whose published rating confirms the solids-handling capability required by Section 712 of the adopted plumbing code.
4.1.4Each control panel shall be listed under UL 508A and shall bear the listing mark.
4.1.5Unlisted pumps, motors, or control panels shall be rejected regardless of supplier documentation.
4.2 Manufacturer Source
NOTE The pump, basin, controls, and alarm for each pumping system should be furnished by a single manufacturer or as a packaged, pre-engineered system to ensure that the pump, the basin volume, the control levels, and the alarm are coordinated. (4.2.1)
4.2.2Where components are furnished by more than one manufacturer, the Contractor shall be responsible for coordinating the basin volume, the pump performance, and the control level settings so that the installed system does not short-cycle and meets the required pumping capacity.
4.3 Installer Qualifications
4.3.1Pumps, basins, and controls shall be installed by a licensed plumbing contractor, and electrical connections shall be made by a licensed electrician.
4.3.2Start-up of each pumping system shall be performed or witnessed by the pump manufacturer's representative or by a technician trained on the specific equipment.
5 Service Conditions
NOTE The pump, basin, controls, and all wetted and exposed materials shall be suitable for the temperature, corrosivity, and atmosphere of the service and the space in which the basin is installed. (5.1)
Conditioned interior space (mechanical room, basement)
Unconditioned interior space (subject to freezing)
Exterior buried basin (frost depth and groundwater considered)
Corrosive or process environment (special materials required)
5.1.1The Contractor shall confirm the maximum temperature of the liquid pumped and the ambient temperature of the space against the pump and motor ratings before installation.
5.1.2Where the basin is installed in an unconditioned space subject to freezing or in an exterior buried location, the basin, discharge piping, and controls shall be protected against freezing.
5.1.3Where the liquid pumped is corrosive or contains chemicals outside the range of ordinary sanitary or storm drainage, the pump, basin, and seal materials shall be selected for that service and the Engineer shall confirm material compatibility.
6 Pump Type and Service
NOTE The pump type shall be selected for the liquid pumped and the solids it must pass; the four service categories below cover the large majority of building applications. (6.1)
NOTE Selecting a sump pump for a sewage application, or an ejector where a grinder is required, is the most common and most consequential error in this scope, and it produces clogging, motor failure, and sewage backup. (6.2)
○ Sump pump — clear water / groundwater / storm (solids 1/2 in or less)
○ Effluent pump — septic effluent / graywater (solids 3/4 in or less)
● Sewage ejector pump — solids-handling sanitary (spherical solids up to 2 in)
○ Grinder pump — sanitary with grinding for long or high-head discharge
6.3 Sump Pumps
6.3.1Sump pumps shall be used only for clear water, groundwater, foundation underdrain water, and storm drainage that is free of sanitary solids.
6.3.2A sump pump shall not receive the discharge of any water closet or any fixture carrying sanitary sewage.
NOTE Sump pumps handling storm or groundwater are high-volume, low-head pumps that pass only small solids (typically 1/2 inch or less), and they are not built to pass or grind sanitary waste. (6.3.3)
6.4 Effluent Pumps
6.4.1Effluent pumps may be used for septic tank effluent, graywater, and similar liquids carrying only small solids, typically up to 3/4 inch.
6.4.2Effluent pumps used in wastewater treatment applications shall comply with NSF/ANSI 46 where required by the adopted code.
6.5 Sewage Ejector Pumps
6.5.1Sewage ejector pumps shall be used for sanitary drainage containing solids, including drainage receiving the discharge of water closets.
6.5.2Sewage ejector pumps that receive the discharge of water closets shall be capable of passing spherical solids up to and including 2 inches in diameter.
6.5.3Sewage pumps and ejectors that do not receive the discharge of water closets shall be capable of passing spherical solids up to and including 1 inch in diameter.
NOTE The 2-inch solids-handling requirement is the controlling reason a sewage ejector cannot be replaced with a sump pump; it is a code requirement under Section 712 and reflects the size of solids that routinely reach a sanitary sump. (6.5.4)
6.6 Grinder Pumps
6.6.1Grinder pumps shall be used where the sanitary discharge must be conveyed against high head, through small-diameter discharge piping, or over a long distance to reach the gravity drain or a pressure sewer.
6.6.2A grinder pump shall be specified in lieu of a sewage ejector where the discharge head exceeds the practical range of a solids-handling ejector or where the discharge pipe size is smaller than the minimum required for an ejector.
NOTE Grinder pumps reduce solids to a slurry, allowing the discharge to be conveyed through smaller pipe at higher head than a solids-passing ejector, at the cost of higher horsepower and higher energy use. (6.6.3)
6.6.4A grinder pump shall not be used as a substitute for correcting an undersized or improperly sloped gravity drain that could otherwise serve the fixtures by gravity.
NOTE Each pump shall be selected from its certified performance curve to deliver the design flow at the design total dynamic head, with the operating point on the stable portion of the curve. (7.1)
20400
204070100150200300400
Default: 70 gpm
10120
102030456080100120
Default: 30 ft
1/2 in (sump / clear water)
3/4 in (effluent)
1 in (sewage, no water closet discharge)
2 in (sewage receiving water closet discharge)
Ground / macerated (grinder pump)
7.1.1Each pump shall deliver the design flow shown on the plumbing equipment schedule at the design total dynamic head, established from the static lift plus the friction and fitting losses of the discharge piping.
7.1.2The pump operating point shall fall on the stable portion of the certified curve, away from the shut-off head and away from the runout end of the curve.
NOTE The total dynamic head shall be calculated from the actual installed discharge routing, not assumed; an underestimated head produces a pump that delivers less flow than required and a basin that fills faster than it empties. (7.1.3)
7.1.4Sewage ejector and grinder pump discharge velocity shall be sufficient to keep solids in suspension in the discharge piping, generally not less than 2 feet per second.
7.1.5The Contractor shall verify that the selected pump capacity equals or exceeds the design inflow to the basin so the pump can keep up with the maximum rate of drainage delivered to the sump.
8 Configuration and Redundancy
NOTE A pumped drainage system has no gravity bypass, so the consequence of a single pump failure is determined entirely by whether a second pump is provided. (8.1)
○ Simplex — single pump (non-critical, readily accessible service)
● Duplex — two pumps with automatic alternator (sewage and critical service)
8.1.1The pump configuration shall be as indicated on the contract documents.
8.1.2Sewage ejector and grinder pump systems serving fixtures that cannot tolerate an outage, and any pumping system serving more than a single fixture group or designated as critical, shall be duplex with two pumps each sized for the full design flow.
8.1.3A duplex system shall include an automatic alternator that alternates the lead and lag pump on successive cycles so the pumps wear evenly and each pump is exercised regularly.
8.1.4The alternator shall start the lag pump automatically on a high-water condition so that both pumps run together when the inflow exceeds the capacity of one pump.
8.1.5Simplex configuration may be used for non-critical sump applications — clear-water and storm sumps and foundation underdrains — where a single pump outage causes only nuisance accumulation and the pump is readily accessible for service.
NOTE A single-pump sewage ejector with no redundancy and no alarm on emergency power is the configuration most associated with sewage backup into occupied space, and it shall not be used for critical sanitary service. (8.1.6)
9 Basin and Cover
9.1 Basin Material and Size
● Fiberglass-reinforced polyester (FRP), ASTM D4097
○ High-density polyethylene (HDPE), ASTM F1759
○ Precast concrete, ASTM C478 (large or buried basins)
18 in (simplex sump, minimum)
24 in (simplex sewage ejector)
30 in (duplex sewage ejector, minimum)
36 in
48 in (large duplex / high inflow)
Per drawings — plumbing equipment schedule (deferred by default)
2496
24303648607296
Default: 36 in
9.1.1The basin shall be of the material indicated and shall be structurally suitable for the soil, groundwater, and superimposed loads at its installed location.
9.1.2The sump pit shall be not less than 18 inches in diameter and not less than 24 inches in depth, unless a larger basin is required to provide the working volume needed to avoid short-cycling or to house the number of pumps and controls specified.
9.1.3Duplex sewage basins shall be sized to house both pumps, the guide rails, and the level controls without interference, generally not less than 30 inches in diameter.
9.1.4The basin volume between the pump-on and pump-off levels shall be sufficient that the pump does not start more frequently than the motor's permitted starts per hour at the design inflow.
NOTE Short-cycling — a basin too small for the pump, so the pump starts and stops rapidly — overheats and destroys the motor and is the most common cause of premature pump failure; the basin working volume and the pump capacity shall be coordinated. (9.1.5)
9.1.6The basin shall be provided with anti-flotation provisions — a ballast collar, anti-flotation flange, or concrete anchorage — where it is installed below the groundwater table so that an empty basin cannot float.
9.2 Cover
● Gas-tight, gasketed, bolted-down cover with sealed penetrations (sewage and ejector service)
○ Sealed cover with vent (effluent service)
○ Solid or grated cover (clear-water sump, non-sewage)
9.2.1The cover for a sewage ejector or grinder basin shall be gas-tight, gasketed, and bolted or otherwise secured so that sewer gas cannot escape into the occupied space.
9.2.2Cover penetrations for the discharge pipe, the vent, the power and control cords, and the alarm wiring shall be individually sealed to maintain the gas-tight integrity of the cover.
9.2.3The cover shall be removable, or provided with a removable access section, to permit removal and service of the pump and the level controls without demolishing the cover.
9.2.4Clear-water and storm sump basins that do not carry sanitary sewage may use a solid or grated cover that retains the gas-tight requirement only where the basin connects to the sanitary system.
NOTE A sewage basin cover that is not gas-tight allows hydrogen sulfide and other sewer gases to enter the building, which is both a nuisance and a health and corrosion hazard. (9.2.5)
9.3 Basin Vent
2 in (typical ejector basin)
3 in (large basin or per fixture vent sizing)
Per adopted plumbing code vent sizing
9.3.1Every sewage ejector and grinder basin shall be vented to the atmosphere, and the vent shall connect to the building vent system or terminate independently through the roof in accordance with the adopted plumbing code.
9.3.2The basin vent shall be sized in accordance with the adopted plumbing code and shall not be less than 2 inches for a typical ejector basin.
9.3.3The vent shall be sized and arranged to relieve the air displaced as the basin fills and admit air as the pump draws it down, so that the cover and basin are not pressurized or evacuated during pump cycles.
9.3.4The basin vent shall not be reduced in size below the basin connection and shall not be combined with the pump discharge.
10 Level Controls and Alarms
10.1 Level Control Type
● Tethered float switches (one per control level)
○ Sealed mechanical / vertical float switch
○ Pressure transducer / submersible level sensor with adjustable setpoints
10.1.1The level control shall start and stop each pump automatically and shall be of the type indicated.
10.1.2Tethered float switches shall be arranged and the basin sized so that each float swings freely without contacting the pump, the discharge piping, the rails, or the basin wall.
10.1.3Pressure transducer and submersible level sensors shall have adjustable, field-settable pump-on, pump-off, and alarm setpoints, and the as-left setpoints shall be recorded in the start-up report.
NOTE Float interference — a float that hangs up on a pump, a rail, or piping and fails to operate — is a recurring cause of pump failure and basin overflow, and the basin shall be sized and arranged so floats move freely. (10.1.4)
10.2 Control Levels
10.2.1The control shall provide, at minimum, a pump-on level and a pump-off level for each simplex system, and a lead-pump-on, lag-pump-on, and common pump-off arrangement for each duplex system.
10.2.2The pump-off level shall be set above the top of the pump volute or at the manufacturer's minimum submergence so the pump is not run dry and so solids are not left stranded in the basin bottom.
10.2.3The pump-on level shall be set below the lowest inlet invert so the inflow is not held back into the drainage system served by the basin.
10.2.4The lag-pump-on level for a duplex system shall be set above the lead-pump-on level so the second pump starts only when one pump cannot keep up with the inflow.
10.3 High-Water Alarm
● Audible and visual alarm with BAS dry contact and silence/test (sewage and critical)
○ Audible and visual alarm, local only
○ Visual indicator only (non-critical clear-water sump)
10.3.1Each sewage ejector, grinder, and critical pumping system shall be provided with a high-water alarm that activates when the liquid level rises above the highest pump-on level.
10.3.2The high-water alarm shall provide both an audible signal and a visual indicator at an attended or readily noticed location, with a silence button that does not disable the visual indicator.
10.3.3The high-water alarm shall provide a dry contact for connection to the building automation system so that a high-water condition is annunciated remotely.
10.3.4The high-water alarm float or sensor shall be independent of the pump control floats or sensor so that a failure of the pump control does not disable the alarm.
NOTE A high-water alarm is the difference between a pump failure that is a maintenance call and one that is a sewage flood; an alarm that no one hears or that shares a failure mode with the pump control is no protection at all. (10.3.5)
11 Valves and Piping Connections
NOTE Each pump in a basin shall discharge through its own check valve and its own isolation (full-open) valve so that either pump can be isolated and removed while the other remains in service. (11.1)
● Full-bore swing check valve listed for sewage / solids service
○ Ball check valve listed for sewage / solids service
○ Full-port ball valve
● Full-bore gate valve
○ Plug valve (solids service)
11.1.1A check valve and a full-open isolation valve shall be installed in the discharge piping of each pump, with the isolation valve located on the discharge side of the check valve, between the pump and the gravity drainage connection.
11.1.2The check valve and isolation valve shall be located above the basin cover, or where the discharge pipe is below grade, in an accessible access pit with a removable cover outside the basin.
11.1.3The check valve shall be a full-bore type rated for the solids size the pump passes so the check valve does not become the clog point in a solids-handling system.
NOTE The check valve prevents the column of liquid in the discharge piping from draining back into the basin when the pump stops; without it, the returned liquid refills the basin and the pump short-cycles. (11.1.4)
11.1.5Each duplex pump shall have an independent check valve so that backflow from the discharge header through an idle pump is prevented and either pump can be removed without draining the header.
11.1.6A union, flanged connection, or the disconnect (rail) elbow of a guide-rail system shall be provided so that the pump can be removed from the discharge piping without cutting the pipe.
11.1.7The discharge piping shall not be reduced below the pump discharge connection size and shall be sized to maintain the minimum solids-carrying velocity.
11.2 Guide-Rail Removal System
● Guide-rail system with rail discharge elbow and lifting chain (submersible sewage/grinder)
○ No guide rail — pump removed with discharge union (small simplex)
11.2.1Submersible sewage ejector and grinder pumps in basins where the pump cannot be lifted out by hand shall be installed on a guide-rail removal system with a discharge (rail) elbow at the basin floor and a lifting chain or cable reaching the cover.
11.2.2The guide-rail system shall allow the pump to be lifted from the basin and reseated on its discharge connection without entering the basin and without breaking the discharge piping.
11.2.3Rail materials, the lifting chain or cable, and the upper rail bracket shall be of corrosion-resistant material suitable for continuous immersion in sewage.
NOTE A guide-rail system keeps a sewage pump out of confined-space entry territory for routine service, which is both a safety requirement and the difference between a 20-minute pump swap and a hazardous basin entry. (11.2.4)
12 Electrical and Emergency Power
NOTE Each pump motor shall be served and protected in accordance with NEC Article 430, and the pump controls and alarm shall be powered so that the alarm remains functional when the normal power or a pump control fails. (12.1)
● Normal power for pumps; alarm on emergency or standby power (critical sewage)
○ Pumps and alarm on emergency / standby power (essential facility)
○ Normal power only (non-critical clear-water sump)
NEMA 1 (dry interior, non-corrosive)
NEMA 4X (washdown, corrosion, near basin)
NEMA 7 (classified location, where required)
12.1.1Each pump motor shall be provided with branch-circuit protection, a disconnecting means, and motor overload protection in accordance with NEC Article 430.
12.1.2A means of disconnecting each pump shall be provided within sight of the pump location or capable of being locked open, as required by the NEC.
12.1.3The high-water alarm for a sewage ejector or grinder system, and the pumps serving an essential facility, shall be connected to the emergency or legally required standby power system where the building is provided with one, so that a normal power outage does not disable the alarm or the critical pumps.
12.1.4The control panel enclosure shall be rated for the environment in which it is installed; a NEMA 4X enclosure shall be used where the panel is exposed to washdown, humidity, or corrosive sewer atmosphere near the basin.
12.1.5Wiring within and into the basin shall be suitable for the wet, corrosive environment, and cord and cable penetrations through a gas-tight cover shall be sealed to maintain the cover's integrity.
NOTE A sewage alarm on the same circuit as the pump it watches goes dark exactly when the pump loses power, defeating its purpose; the alarm shall not depend solely on the same supply as the pump. (12.1.6)
13 Installation
13.1 General
13.1.1The Contractor shall install each basin plumb and at the elevation required so that all drainage served by the basin flows into it by gravity.
13.1.2In other than existing structures, the sump shall not receive drainage from any piping within the building that is capable of being discharged by gravity to the building sewer.
13.1.3The basin shall be set on a stable, level bearing surface, bedded and backfilled per the basin manufacturer's instructions, and anchored against flotation where groundwater is present.
13.1.4The inlet shall enter the basin above the high-water alarm level where possible, and the inlet connection shall be sealed to the basin.
13.2 Pump Setting and Discharge
13.2.1Submersible pumps shall be set on the basin floor or on the rail discharge elbow at the manufacturer's required clearance, with the level controls arranged to maintain the minimum submergence.
13.2.2Pedestal sump pumps shall be set with the motor above the basin and the float arranged to operate without interference.
13.2.3The discharge piping shall be supported independently of the pump and the basin cover so that piping weight is not carried by the pump or the cover.
13.2.4The discharge piping shall be arranged so the check valve and isolation valve are accessible for service.
13.3 Coordination
13.3.1The Contractor shall coordinate the basin penetrations, the discharge connection point, and the vent connection with Sanitary Waste And Vent Piping before setting the basin. 13.3.2The Contractor shall coordinate the electrical disconnect, the branch circuit, the emergency power connection where required, and the building automation dry contact with the electrical and controls trades before rough-in.
13.3.3The Contractor shall coordinate basin location and cover access with the architectural and structural drawings so the cover can be removed and the pump serviced in the space provided.
14 Testing and Start-up
14.1 Leak and Operational Test
14.1.1The basin, cover, and discharge piping shall be tested for leakage and the gas-tight cover seal verified before the system is placed in service.
14.1.2Each pump shall be tested by filling the basin to the pump-on level and confirming that the pump starts, discharges to the gravity drain, and stops at the pump-off level.
14.1.3The high-water alarm shall be tested by raising the level above the highest pump-on level with the pump prevented from running, and confirming the audible signal, the visual indicator, and the building automation annunciation.
14.1.4For duplex systems, the alternator shall be tested through successive cycles to confirm that the lead and lag pumps alternate, and the lag-pump-on level shall be tested to confirm both pumps run on a high-water condition.
14.2 Start-up and Adjustment
14.2.1The pump manufacturer's representative or a trained start-up technician shall perform or witness the start-up of each pumping system.
14.2.2Start-up shall confirm the pump rotation, the running amperage compared to the motor nameplate, the pump-on, pump-off, lag-pump-on, and high-water alarm levels, and the absence of float or control interference.
14.2.3The level setpoints shall be adjusted so the pump does not short-cycle at the design inflow and so the pump-off level maintains the required submergence.
14.2.4The as-left setpoints, the measured amperage, and the confirmation of alarm and alternation shall be recorded in the start-up report and submitted as a closeout document.
15 Delivery, Storage, and Handling
15.1Pumps, basins, controls, and alarms shall be delivered in the manufacturer's original packaging with identification and rating labels intact and legible.
15.2Pumps and control panels shall be stored indoors in a dry location protected from moisture, dust, and physical damage until installed.
15.3Float switches, transducers, and cords shall be protected from kinking, crushing, and abrasion during storage and installation.
15.4Basins shall be stored to prevent deformation, and fiberglass and polyethylene basins shall be protected from prolonged direct sunlight where extended storage is required.
16 Warranty
1 year from substantial completion
2 years from substantial completion
16.1The Contractor shall warrant all equipment and installation covered by this standard against defects in workmanship and against leakage and malfunction for the project warranty period following substantial completion.
16.2The warranty shall cover the pumps, basins, covers, controls, alarms, valves, and connections installed under this scope.
16.3Manufacturer warranties for the pumps, control panels, and alarms shall be passed through to the Owner as part of the closeout documentation.
16.4Where a manufacturer warranty extends beyond the Contractor's installation warranty period, the Contractor shall assign and transfer the manufacturer warranty to the Owner at closeout.
17 Spare Parts
☐ One spare pump matching each installed sewage / grinder pump model
☑ One spare float switch or level sensor of each type installed
☐ Spare check valve flapper / ball for each check valve type
☑ Manufacturer's recommended seal and gasket kit per pump
17.1The Contractor shall deliver to the Owner the spare parts indicated, in the manufacturer's original packaging, with a parts list identifying each item by the pump or control it serves.
17.2For critical duplex sewage and grinder systems, the Owner may require a complete spare pump matching the installed model so a failed pump can be replaced without procurement lead time.
17.3The spare parts list and the recommended replacement interval for wear items shall be included in the operation and maintenance manual.