General Information - Section 1

Thank you for using the GunnCo catalog. GunnCo offers SidesloperTM  leachate pumping systems for side slope extraction along with pumps and equipment for other liquid transfer and monitoring applications, including vertical wet well, condensate pump packages, transfer pumps, spray pumps, sump pumps, flow meters, and tank level indication and alarm products.

SidesloperTMsystems are the result of years of landfill leachate pump application experience and user input. Included in this catalog are the most popular pump ranges and basic system specifications which include wheeled pump, discharge pipe or hose, riser side exit fittings, and a standard controller. The catalog specifications provided are for economical, simple systems which fill the needs of many end users. GunnCo also can supply sophisticated packages for complex projects or projects requiring special or custom features. Please contact GunnCo for your specific requirements.

All systems are guaranteed for performance and material compatibility for the duty specified. Standard systems are designed for simplicity of installation and operation and do not require special knowledge or skills to install, start-up, or operate. Installation and start-up assistance and training are available from GunnCo if required.

For vertical wet wells we offer pumps with disconnect and guide rail systems designed for reliable service and easy access. Condensate pumps systems may be provided complete with HDPE sump packages.

GunnCo looks forward to providing quality products at competitive prices with responsive service, application knowledge, and systems design with attention to detail. Please call with any questions!







GunnCo               Sidesloper™ Pumps

Pump & Control, Inc.

515 Industrial Way Cumming, GA 30040

(770) 889-7114             This email address is being protected from spambots. You need JavaScript enabled to view it.           

For side slope leachate extraction applications, GunnCo provides pumps and pump systems as detailed in Section 2 of this catalog. The following application notes are for side slope systems, although they may relate to other applications. Additional application notes are provided in the pump sections. 

PUMP SIZING/Basic Sump and Riser Design Considerations

Pumps should be selected based upon flow rate, sump area, and minimum and maximum system head conditions.

Pumps should be selected with accumulation and operation in mind. For instance, if the calculated average flow into the cell is 5 GPM, the sump might be sized to accumulate enough liquid to allow the pump to operate 20 minutes to 4 hours. A 40 to 60 GPM pump would be able to empty 24 hours of accumulated liquid in under 3 hours and the pump would be capable of keeping up with peak flow conditions. The sump area should always be sized to prevent the pump from short cycling with a minimum cycle time between pump starts of 20 minutes. Many sump designs require the pump to operate only a few times per day during wet conditions. We suggest sizing the sump for normal pump operation of a few hours per day and using the liquid level allowed to remain on the liner as a safety reserve for peak rain conditions. An undersized pump will run continuously and an oversized pump may short cycle, both resulting in a shortened pump life.

The riser pipe should be the minimum size noted on the pump curve/data sheets. This will ensure the pump will fit if the pipe loses some shape and will allow for use of exit fittings. Smaller riser sizes may be used but could affect pump placement (turning the slope at the toe of the riser) or the use of side exit fittings. For long pumps, larger riser pipes, multiple miter cuts, or an increasing pipe size or transition at the toe may be required.

The riser pipe may be extended in the horizontal direction to provide a free flowing sump area. Adequate riser perforations and composite drainage materials are essential to allow proper flow to the riser pipe pump sump area. The pump only needs to travel to the horizontal position just past the toe in most cases.

PUMP SIZING/Basic Force Main Design Considerations

Pump head conditions are determined not by the pump but by the piping system and elevations. The pump should be specified for the static lift plus friction losses of the piping system including the discharge pipe or hose. It is difficult to predict the exact piping system losses for a landfill. The best approach is to estimate the minimum and maximum head conditions and select a pump which will operate at both.   




A problem in many landfills is the operation of multiple pumps into a common force main. This is a difficult application due to the unpredictable sequence of operation and often unknown or changing piping design. Often force mains are sized to maximum velocities and maximum pressure drops. This may cause the furthest pump from the force main discharge to require an extremely high discharge pressure when all pumps are operating, but a very low pressure when it is the only pump operating. In order for a pump to provide good service, it must be capable of operating at both points or have some means of flow control. 

Small force main piping may be used to maintain high velocities (typically 7 fps) to minimize sedimentation and installation costs; however, once the pumps stop, the velocity becomes "0" and the solids settle. An oversized force main may minimize head variations but may allow the solids to settle until the velocity increases or the force main is cleaned by mechanical means such as an inducted high flow. A good approach is to size the force main to minimize pressure drops by increasing pipe size as the number of pumps increases.

If an appropriate pump or piping design is not available, methods such as flow orifices, pressure control valves, and flow switches and motor monitoring devices may be used. These are available from GunnCo upon request.


The P2K pumps offer the widest selection of flows and heads but must be carefully sized to operate within the published performance curve ranges. These pumps are available for single phase and three phase applications and meet most needs. Higher head versions of all models are available upon request.

The P3K wide performance range pumps are provided only in three phase versions for side slope duty and are limited to 1 and 2 horsepower models. These pumps offer excellent service where high solids (silt and sand) or scaling is present. They are a good choice for sites with wide pressure variations when multiple pumps are used.  




The P2K Series pumps are available in 304 stainless steel or can be provided in 316 stainless steel for particularly corrosive applications. The preferred material of pump construction is 304 stainless steel with bearings in Teflon material. Buna rubber is available upon request and is used in abrasive applications where there is a lot of sand and abrasives in the leachate stream or where Teflon is not required.

The P3K Series are available in 316 stainless steel materials and in cast iron/stainless steel. These pumps are fitted in less corrosive applications such as containment area sumps or valve vaults.

P3KH Series are designed specifically for light SLURRIES or leachate streams where a lot of sand, silt, and solids may settle in the sump. These pumps may be used in side slope risers and also are well suited for truck load sumps other vertical sumps where solids may settle.


Use of HDPE pipe provides low cost, and the pipe handles high pressure and ensures the pump is positioned in the same place each time it services. Flexible hose may be used where needed but should be limited to short risers of 50 feet or less in most cases. We prefer a vacuum rated EDPM hose for most applications.


Check valves and isolation valves should be provided in all installations. Other items that may be required include air release/vacuum release valves, flow meters, pressure gauges, and sample valves. These are available from GunnCo upon request. 


A key ingredient of a successful project completion is proper installation of the pump system. Considerations of the system installation should include:



  • Proper installation of the Riser Pipe per pipe manufacturers guidelines. This will ensure the heavy riser pipe remains in place and remains straight without slipping down the slope, which can affect pump placement and damage head walls where applicable. An upper flange should be used that will allow complete sealing of the pipe. A heavy backing ring is generally not required as they are designed to operate at full rated pipe pressure of 100 PSI +. The gas produced in the cell has been observed to be well under 5 PSI therefore most installation can be sealed using a flange and blind flange using 8 or 10 bolts( in the size range of 3/8” to 5/8”). If needed, additional bolts or gasket material can be added in future if determined necessary. Hardware should be stainless steel - galvanized hardware will eventually corrode and may be difficult and expensive to remove. The riser should extend above final grade to allow at least 12” between grade and the bottom of the riser flange but less than 24” is suggested. A riser too low may result in a portion of the riser being silted in or sediment run off entering collection system and if higher may make access difficult when servicing pump.

  • Recording the “AS BUILT” dimensions of the installed riser pipe. The pump must be properly located within the riser, and this information is recorded. This is historical information that may be needed in future-we suggest this information be noted in several locations including inside the control panel.

  • An accessible Pump Disconnect fitting for the pump discharge. The fitting should be placed by considering the weight of the pump and full pipe, being sure that placement will allow clearance for the pump to pass the fittings and sealing of the riser, and the connection must also meet strength and durability for the life of the landfill. We generally recommend use of a riser side discharge exit fitting located about 6” below the riser flange and positioned at 9:00, 12:00, or 3:00 position when possible.

  • The connection at 6:00 position is acceptable keeping in mind the pump may not roll over the disconnect fittings and will have to be lifted and maneuvered over the fitting. This may require more effort for large pumps. In all cases the fitting within the riser should not extend more than about 3” into the ID to allow ample space for the pump to roll past. An alternate arrangement we often see on system designs is having the discharge piping going through the front blind flange. This is acceptable, but again the weight of the pump/pipe assembly should be considered and means of removal of the flange from the piping needs to be provided for pump removal.

  • Proper selection, installation, and location of the discharge piping disconnect fitting is essential to allow future maintenance. Use of HDPE pipe and strictly stainless steel fittings is a must. Do not attempt to use unions to compensate for misalignment as flanges may assure a better seal.

  • Locate valves in proper sequence (to isolate cell pump and allow access to check valve or flow meter, etc.) and allow ample access around the valves and fittings for future service should replacement be needed.

  • Coordination is required between the piping contractor and the pump installer to ensure the required materials are provided and the pipes are located as needed to a clean connection.

  • Properly mount control panel (and junction boxes). The control panel must be mounted at a safe distance from potentially hazardous sources of gas that might be ignited by the control panel relays or contactors. Rule of thumb is at least 10’ from the nearest riser. We do not recommend installing the control panel inside a riser house. The control panel will have a heater and thermostat to maintain heat and control condensation so mounting outside is OK.

  • The control panel should be mounted on a structure of sufficient rigidity to handle the weight of the control panel and any wind or snow/ice loads. The panel should be mounted at the correct level above final grade for average operator to see all indicators near eye level. There should be a flat and dry area of about 3’ minimum immediately in front of the panel for safe operator access and the panel should be easily accessible to encourage the operator to check status and allow safe service. Conduits and junction boxes (sometimes referred to as Break Out boxes) should be installed as required to protect the cables from damage (foot traffic, rodents, birds) while allowing recovery for service or replacement. This also ensures a gas tight seal for the control panel. Permanent sealing should not be used on pump power, transducer, and flow meter CABLES between risers and junction boxes. The junction boxes allow for permanent potting seals (seal offs) between the junction boxes and the control panel.

  • Junction boxes should be installed as close to the riser as possible, but allow for accessibility and space for door to open. They have no spark producing components within (such as relays). A potted seal between the junction box and the control panel (the seal is normally installed directly beneath the control panel) prevents any explosive gases from entering the control panel when properly installed and potted.

  • Proper sealing of incoming electrical power and good grounding of the control panel. These steps prevent fire and provide protection from power line and lightning transient surges. This is usually completed by the same electrical that powers the panel.

  • Completion of installation. The pumps are generally the last major item installed on a cell construction project and usually require 2 days to complete. Prior to pump install, the riser should be completed, any headwall concrete work completed and frames removed (consider conduit access prior to pouring concrete), and earth packed to final grade at control panel location. We suggest carefully coordinating force main piping and electrical contractor with the pump installation contractor. 


1.1 Description

A. General

1. Furnish all labor, materials, tools, equipment and services for leachate pumping equipment in accordance with contract documents.

2. Provide all supplementary or miscellaneous items and devices incidental or necessary for a proper and complete installation.

B. Scope of materials and services shall include

1. Supply and installation of a submersible type pumping systems for removal, conveyance, and control of leachate from the landfill operating on electric service.

1.2 Submittals

A. Submittals shall include pump performance data, assembly drawings, electrical schematics, key components cut sheets, fittings installation details, warranty statement, and list any revisions or exceptions to all specifications.

B. Manufacturer’s installation instructions shall be provided with shipment of equipment.


2.1 Manufacturer

A. Pumping system shall be in compliance to specifications, drawings, and shall not take exceptions.

B. Pumping system shall be a Sidesloper™ P2K series as manufactured and supplied by GunnCo Pump & Control, Incorporated, Cumming, Georgia 770-889-7114.

2.2 Pump

A. Pump shall be constructed of 300 series stainless steel including housing, impellers, bowls, check valve disc, shaft, coupling, and strainer. Bearings and seal rings shall be constructed of Teflon material.

B. Pump shall provide a minimum flow of [____] GPM at a discharge pressure of [___] feet of total dynamic head with a second point of [___] GPM at a discharge pressure of [___] of total dynamic head. Shut-off head shall be at [___] feet of total dynamic head.

C. The pump shall be a model [P2K____]

2.3 Motor

A. The motor shall be [___] Horse Power non-overloading and suitable for operation on [1/230] [3/230] [3/460] volt, 60 Hz supply of power.

B. Motor shall be suitable for leachate applications, be permanently lubricated, and constructed of stainless steel wetted parts with stainless steel clad or corrosion resistant end housings.

C. Power cable shall be heavy duty submersible type, jacketed, continuous length, and sized per U.S. NEC standards. A strain relief/riser exit fitting shall be provided. The cable shall be equal to the riser pump length plus 20' minimum.

2.4 Wheeled Carrier

A. Pump and motor shall be mounted in a patented Sidesloper™ wheeled carrier constructed of stainless steel with non-corrosive and self-lubricating wheels. Level sensor holder shall be permanently mounted on carrier as to prevent pump from running dry. The level sensor shall be able to be installed without disassembly or removal of the pump from carrier.

B. Carrier supplied must be in compliance with United States patent laws.

C. Patented removable suction strainer shall be provided to allow for cleaning without removing pump from carrier. Strainer will be reinforced and have round perforations allowing for a minimum of 50% open area.

D. The pump assembly shall be designed for use in an 18” to 24” inch SDR 17 or 11 HDPE riser pipe with a maximum pump riser length of [_____] feet (distance from the pump operating location to the entry of the pipe). The carrier shall allow the pump to travel up and down the riser over welding beads to allow for stable operation of the pump. Wheels shall have a minimum diameter of 6” and shall be constructed of a self-lubricating non-metallic material.

E. The carrier shall be equipped with a welded stainless steel ring with a suitable stainless retrieval cable equal to the total riser pump length. The cable shall be provided with stainless steel U-bolt type clamps, snap hook, and anchor. The cable shall be removable from the pump carrier without removal of cable U-bolt clamps.

F. The carrier shall be equipped with patented skid plate design on both the suction and discharge ends as to allow for easy installation and removal of pump.

G. The carrier shall be equipped with stainless steel cam lock type connection on discharge end as to allow for easy disconnection from discharge piping.

2.5 Discharge Assembly

A. A [___] inch discharge assembly shall be provided. Pipe shall be of suitable material for the application and a minimum working pressure rating 10% over the maximum pump pressure at shut off condition and rated no less than 50 PSI working pressure.

B. Pump discharge shall have stainless steel cam lock connector and positive locking companion fitting to allow for quick connect/disconnect of the pump and discharge piping.

C. Discharge pipe shall be equipped with stainless steel male threaded ends to allow for connection of stainless steel cam lock type connectors.

D. A stainless steel elbow and cam lock fittings shall be provided to allow quick removal of the discharge assembly without tools. A stainless steel gas tight riser side exit fitting shall be provided. Instructions for the installation of the fittings shall be provided.

E. OPTION: A stainless steel flow meter tee fitting (f-npt ends) shall be provided for the installation of the flow meter. Flow tee shall be installed so that the fitting remains full at all times.

1. Insertion paddle wheel flow meter flow tee shall be installed inside the riser with stainless steel cam lock disconnect fittings.

2. Insertion magmeter flow tee shall be installed outside the riser with stainless steel cam lock disconnect fittings.

F. OPTION: A stainless steel swing check and ball valve shall be provided and installed outside the riser.

2.6 Controls

A. The control panel shall provide automatic pump operation, protection, and level indication for a single pump operating in sump. Panel shall be a Sidesloper™ GC101 Series Control Panel. Enclosure shall be rated [NEMA 4 Steel] [NEMA 4X Stainless Steel]. Enclosure size shall be minimum dimensions of 30” X 36” and shall include a 17” X 11” outer door viewing window which allows view of indicators. Door shall open and close using a three point latch system with stainless steel exterior handle and no perimeter clips or latches shall be required to properly close. The handle shall be equipped with a lock hasp for use with customer’s pad lock.

B. The panel shall be equipped with a properly sized main disconnect circuit breaker (thermal magnetic permanent trip Square D type HDL) with inner door interlocked operator handle. Additional breakers shall include Motor Breaker (Square D type HDL), Control Circuit Breaker (Square D QOU), and Receptacle/Accessories Circuit Breakers (Square D type QOU) where applicable. All breakers shall be selected for the required trip characteristics of the components protected and shall be back-plate mounted. Fuses for voltage/phase monitor shall be provided.

C. The motor starter shall be a heavy duty NEMA rated Square D 8536 with properly selected thermal overloads with alarm auxiliary contacts for overload condition.

D. An indicating controller with digital level read out to 1/10th of an inch shall be installed for each pump. Range shall be 0-138.6” and display shall be with ½” high back lit LCD digits. The controller shall be adjustable for pump and alarm set and reset points using only a screwdriver. Level and ON and OFF set points require only turning a 5 position selector knob. No punch and scroll techniques shall be required to check or adjust set points. Controller shall have plug in type terminals for all input and output connections to allow simple should replacement be required. Display shall flash during a high level condition. A plug in type auxiliary relay shall be provided for operation of the motor starter contactor to maximize life of controller pump contacts.

E. The unit shall include a primary power surge protection device, control circuit surge suppressor (plug-in module with indicator light), and an instrument signal surge suppressor. The level system shall be intrinsically safe using a dual barrier fused intrinsically safe barrier. A plug-in type indicating voltage/phase monitor shall be provided to protect against phase or voltage fault conditions.

F. Interior door operator controls and indicators shall include RUN light, OVERLOAD light, and a PHASE LOSS/VOLTAGE FAULT light shall be provided. Lights shall be 30mm transformer type with 6.3V lamps. H-O-A switch and overload reset push button shall be 30mm. An electro-mechanical elapsed run time meter to 1/10th hour shall be provided. Interior door shall allow access to all breaker resets at surface level.

G. A heater with adjustable thermostat shall be provided to reduce moisture inside of the panel.

H. Terminal strip shall be provided for connection of level sensor and flow meter (if applicable) which shall be mounted for easy access.

I. All components shall be labeled and all wires shall be numbered. Schematic drawing shall include wire and terminal numbers for each component.

J. A transformer shall be provided where required or specified with a rating of 250VA. Transformer shall be properly fused and control circuit shall be equipped with a control circuit breaker.

K. An overload reset shall be provided. Reset shall be a through the door push button with spring return.

L. OPTION: A top mounted RED high level alarm light shall be provided in addition to the flashing level indicator display feature. Alarm light shall be [LED Flashing] [Lexan lens with 40 watt bulb with flasher] [Strobe].

M. OPTION: A digital flow meter with LCD display allowing for simultaneous display of flow rate and gallons total (to 99,999,999) shall be provided. Unit shall be potted into an aluminum frame housing and mounted in the interior door of the enclosure. Unit shall be a pulse input type operating a 24vdc power supply. Total gallons pumped must be re-settable and lockable for non-reset operation. A power supply rated for 24vdc 100mA minimum output shall be provided. An LED on the power supply shall provide operation indication.

N. OPTION: A motor monitoring device shall detect a dry run/“dead head” (undercurrent) condition shall be installed. In addition the device shall be capable of providing redundant motor protection for overload, high and low voltage, short cycle, and undercurrent. Three phase units shall also provide phase and amperage unbalance detection. Unit shall provide a digital code of any fault or status and be selectable for display of voltage or amperage for each leg and average. Display shall provide amperage or voltage. Unit shall be fully programmable for actual amperage/voltage selection using the digital display and shall be capable of programming delay periods and number of restarts after a detected fault condition. Unit shall be back-plate mounted with an interior door cut out to allow viewing and adjustment without opening panel interior door.

O. OPTION: A remote lockout circuit with indicating light shall be provided. Circuit shall include a 24vdc relay and lockout/tank full indicating light. Primary lock out panels shall additionally be equipped with a 24vdc power supply suitable for application.

P. Option: An event counter shall be provided to display the number of starts of the pump.

Q. Option: A level simulator circuit shall be provided to allow for push button testing of level indication system.

2.7 Instrumentation

A. Each pump shall be equipped with a submersible pressure transducer of stainless steel construction compatible with control panel and with a static accurate of no more than 1% of range shall be provided. Range shall be 0-5 PSI and the unit shall provide a 4-20mA signal and be equipped with an integral surge suppressor.

B. The transducer shall be equipped with a shielded cable suitable for the application and of continuous length with a heavy outer jacket. A strain relief/riser exit fitting shall be provided. Cable shall be equal to pump power cable length.

C. The transducer shall be equipped with a desiccant type disposable drier tube for shipment and a permanent bellow breather located in the control panel for operation.

D. Transducer shall have an oversized sensing face with Teflon coated diaphragm.

E. OPTION: A flow meter sensor shall be provided.

1. Device shall be an insertion paddle wheel type of stainless steel construction with jewel bearings to resist wear and clogging. A 15’ cable shall be provided.

2. Device shall be an insertion magmeter type of stainless steel construction. A 15’ cable shall be provided.

F. OPTION: A wireless remote lockout system shall be provided with the capability of receiving signal from radio transmitter to initiate lockout condition and disabling pump from pumping. Associated sending unit to be located at tank or sump. Requires option “O” in control panel (2.6.O)

G. OPTION: A cellular based monitoring system shall be provided allowing for web based monitoring, SMS notification, and email notification of system status. System shall include 12 months of cellular service plan included.

2.8 Junction Boxes

A. The pump supplier shall provide junction boxes for use with the cables for the riser side exit arrangement. Junction boxes shall be selected and designed for easy recovery and replacement of the pump and transducer cables while providing a complete seal of moisture and gases between the riser and control panel.

B. All boxes shall be NEMA 4X rated [non-metallic] [stainless steel] with hinged door and locking hasp. All exterior latching screws shall be self-retaining.

C. The power cable junction box shall be size 10” X 8” X 4” minimum and provided with a steel back plate, properly sized terminal strips, ground lug, and properly sized non-metallic cable compression fitting.

D. The transducer level sensor/flow meter cable junction box shall be size 10 X 8” X 4” minimum and provided with a steel back plate, terminal strips, a properly sized bellows breather device, and properly sized non-metallic cable compression fitting.

E. Riser pipe cable fittings for the power and sensor cables shall be nylon construction non-corrosive strain liquid tight straight strain relief type properly sized for the power and sensor cables provided. Fittings shall be provided for both the riser and associated conduit or junction boxes. A sufficient quantity shall be provided for each application. Cable fittings shall be installed in correctly sized tapped holes as per pump provider’s instructions.

2.9 Junction Box Mounting Rack

A. Uprights and Cross supports shall be galvanized unistrut type material.

B. All Hardware shall be corrosion resistant and unistrut type. Nuts shall be used at each connection.

C. All ends of unistrut shall be finished and capped with vinyl covers.

D. Bottom of boxes shall be a minimum of 24” above grade and secured with concrete or mounted on wall with appropriate stainless steel fasteners.

E. Conduit Seals shall be provided for use under control panel for pump power and instrument cables to provide a gas seal between panel and junction boxes. Proper conduit fittings shall be provided for proper installation.

2.10 Control Panel Mounting Rack

A. The pump supplier shall provide a mounting support for use with the control panel provided.

B. Uprights shall be minimum 2” sch 40 galvanized steel pipe with threaded ends.

C. Uprights shall be capped with thread on galvanized caps.

D. Cross supports shall be galvanized unistrut type material.

E. All hardware shall be corrosion resistant and unistrut type. Nuts shall be used at each connection.

F. All ends of unistrut shall be finished and capped with vinyl covers.

G. Bottom of panel shall be a minimum of 30” above grade and secured with concrete.


3.1 Installation

A. Equipment shall be properly installed by the manufacturer based upon the contract documents and manufacturer’s instructions.

B. Control panel shall be installed on suitable mounting rack to resist damaged caused by wind, corrosion, and/or rot. All electrical routing between the control panel and equipment shall allow for recovery and installation necessary for service and prevent moisture or gas fumes from entering control panel from the riser pipes.

C. Flow meter sensor fitting shall be installed per manufacturer’s instructions and shall ensure that the sensor tee fitting remains full at all time for proper recording of flow totals.

D. All piping outside the riser (pipe, pipe supports, required pipe fittings, check valves, and isolation valves) shall be supplied and installed by the contractor.

3.2 Contractors Responsibilities

A. Contractor shall ensure that all collection piping and the riser pipe should be free of shavings, debris, sand, silt, and/or mud at the time of pump installation.

B. Contractor shall ensure there is sufficient liquid in the risers at the time of start-up and testing.

C. Contractor shall ensure an accurate “AS BUILT” sketch is recorded of the riser pipe fabrication and dimensions at the time of installation of the pumps.

D. Contractor shall ensure a record of the total lengths of materials “AS INSTALLED” used in each riser pipe is recorded and provided to the manufacturer at the time of start-up along with a copy of the original “AS BUILT” sketch.

E. OPTION: Contractor shall install the system package per the manufacturer’s instructions including but not limited to the pump, discharge piping, control panel, junction boxes, wiring between junction boxes and control panel, and seal-offs.

3.3 Start-Up

A. After installation the manufacturer shall provide system start-up services including the following services:

1. Inspect installation and adjust or set all necessary adjustments for proper service.

2. Test and record pump and control operating characteristics including flow rates, amperage, and level readings and cycles at start and completion of testing.

3. Confirm that the installation is correct and advise contractor of any revisions necessary for proper maintenance or operation.

4. A final start-up report shall be furnished which shall include the “AS BUILT” of pump system and of discharge piping.

B. Operations and Maintenance Manuals shall be provided and shall include troubleshooting guide, system controls operator instructions, pump assembly and service guide, pump operating characteristics, electrical AS BUILT schematic, bill of materials of electrical control panel, warranty statement, contact statement, and additional information as necessary for normal operation and maintenance of the system.

3.4 Semi-Annual Preventative Maintenance Service

A. A semi-annual preventative maintenance service agreement for maintaining compliance shall be included with system sale to provide inspection of performance, operation, and to evaluate the pumping system to ensure proper operation. Inspection shall include but not be limited to: test panel operation, test level and alarm settings and adjust if needed, check lights, fuses, and surge suppressors/arrestors, record pump run hours, check cycle times to ensure pump is not short cycling, inspect all electrical connections for signs of corrosion caused by gas, check and record operating voltages and amperages, inspect exit fitting and discharge piping for leaks, provide an inspection report with evaluations to operator.

3.5 Warranty

A. Sidesloper™ packages sold as specified and complete systems (pump, panel, and level sensor) shall be covered by a 12-month warranty. The warranty period begins upon the date of shipment and covers all components against failure to function due to workmanship, component failure, or materials compatibility for the application as recommended and sold and paid for within quoted terms.

B. Claims under the warranty can be made by obtaining a return authorization number from GunnCo during the warranty period and returning the defective component(s), freight pre-paid to GunnCo or the proper service location as directed by GunnCo. Details of the problem should be included with the returned item along with the return authorization number. The defective component must be returned within 30 days of the authorization date. The option to repair, replace components shall be that of GunnCo. Costs associated with troubleshooting, removal or replacement of components, rental equipment, rush premium charges, and freight is not included under warranty unless stated.

C. Warranty does not cover normal wear, damage due to accident or physical damage (during shipment, installation, or storage), acts of nature (lightning, flooding, etc.) (Blown fuses, surge suppressors, or voltage monitors), misuse, abuse, improper storage, improper/defective electrical service (low or high voltage or surges), improper installation, improper selection by others, operation outside design performance, or improper or unauthorized service or modifications.

D. Warranty applies only to system as operated under the conditions at the time of installation and per design parameters and conditions as specified pumping “clean” leachate free of excessive debris, solids, and sludge. Damage due to abrasives, solids, sludge, sand, silt, and scale causing damage and wear in pump/motor/carrier and transducer is not considered warranty issue unless specifically stated in proposal.

E. Option: Field Warranty for all GunnCo installed systems.

1. Pump systems sold as an installed system project package are covered for a 12-month service period after installation by GunnCo or its representative. The warranty does not cover physical damage, abuse, misuse, freezing, lightning and surge damage, improper operation, or damage due to unauthorized design revisions or operating parameters. Materials failures may be subject to the original manufacturer terms and conditions of warranty.

2. The service warranty procedure shall include confirmation of nature of problem to GunnCo and may require local electrician or site personnel to confirm scope of problem.

3. Repairs by others should be authorized by GunnCo. No invoices or back charges will be accepted without prior approval by GunnCo. Charges should be customary and include a written description of the problem and solution. Damaged components must be returned to GunnCo for warranty consideration.

4. When applicable, GunnCo requests site personnel replace a damaged component (such as plug-in parts) or check status lights and troubleshoot to determine nature and scope of problem.

5. Service visits determined to be non-warranty related are subject to normal GunnCo service charges, per diem rates, and travel time charges.


Sidesloper™ pumps are designed for use in side slope riser applications or may be provided without wheels for use in vertical sump applications where cooling or lower inlet screens are required.

Sidesloper™ pumps utilize the highest quality materials and components available for long and reliable service life.

About GunnCo

GunnCo Pump & Control, Inc. is a family-owned business located just north of Atlanta. Mike Gunn and his experienced staff represent over 50 years of pump design, construction, and application experience, offering landfill pumps and related equipment packages, as well as singular components: pumps, custom controls, replacement parts, and accessories for all pumping systems.