Details

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Grundfos Submersible Pump SQ 1 SQ 1-N, SQE 1, SQE 1-N
1. Product Introduction
SQ pumps are submersible pumps available in the
following versions:
• SQ
• SQ-N
• SQE
• SQE-N
• SQE-NE.

Applications
SQ and SQE pumps are suitable for both continuous and intermittent operation for a variety of applications:
• domestic water supply
• small waterworks
• irrigation
• tank applications
• pressure boosting.

SQE-NE pumps are suitable for environmental applications, such as remedial pumping or sampling at:
• refuse dumps
• chemical sites
• industrial sites
• garages and petrol stations.
Note: For other applications, please contact Grundfos

Features and Benefits
SQ pumps offer the following features:
• dry-running protection
• high pump and motor efficiency
• wear resistance
• protection against upthrust
• soft starter
• overvoltage and undervoltage protection
• overload protection
• overtemperature protection.
Additionally, SQE pumps offer the following benefits:
• variable speed
• electronic control and communication.
The motors are based on the most recent technology within permanent magnets. This technology is the main reason for the high efficiency of the motors. The motors have a built-in electronic unit containing a frequency converter featuring soft start.

SQ pumps are fitted with a single-phase Grundfos MS 3 or MS 3-NE motor, and by means of the built-in frequency converter, the motor is driven at a constant speed.
SQE pumps are also fitted with a single-phase Grundfos MSE 3 or MSE 3-NE motor. Both motor types can communicate with the Grundfos CU 300 and CU 301 control units, which can be operated with Grundfos GO Remote.
SQE pumps feature variable speed which is offered through frequency control. This means that the pump can be set to operate in any duty point in the range
between the pump minimum and maximum performance curves.
CU 301 is specially developed for applications where a constant pressure is required.
CU 300 and CU 301 provide full control of SQE pumps.
In case of pump fault, the front of the CU 300 or CU 301 shows an alarm. Grundfos GO Remote enables monitoring of the installation and changing of the factory settings.
SQE pumps can operate without a CU 300 or CU 301. However, in such case, the pump does not offer all the features available when connected to a CU 300 or a CU 301.

Pumped liquids
The SQ and SQE pumps are suitable for pumping thin, clean, non-aggressive, non-explosive liquids, not containing solid or long-fibred particles larger than sand grains. The pH value of the pumped liquid should be between 5 and 9.
The SQE-NE pumps are applicable in contaminated or hydrogen-carbonate-containing groundwater. The pH value should be between 2 and 13.

Sand content
The maximum sand content allowed is 50 g/m3.
A higher sand content will reduce pump life due to wear.

Temperature
Due to differences in regulations, temperature limits have been determined according to the following regions:
• West European
• Central European
• Asian-Pacific
• North American.
For the West European, Central European and Asian-Pacific region, the following table applies:
Temperature limit on the motor nameplate: 35 °C.
Note: UL accepts only one temperature limit to be stamped on the motor nameplate. Identical motors are used in the following regions:
• West European
• Central European
• Asian-Pacific
• North America.
For the North American region, the following table applies:
Note: According to UL regulations, the temperature of the pumped liquid must not exceed 86 °F (30 °C) for products in the North American region.

Viscosity
The pumping of liquids with a viscosity higher than that of water will cause the following:
• head loss
• higher power consumption.
If in doubt, contact Grundfos.

2. Features and benefits
Dry-running protection
The pumps are protected against dry running. A value of pcut-out ensures cut-out of the pump in case of water shortage in the borehole, thus preventing a burnout of the motor.
The dry-running protection is active after 30 seconds of operation. The dry-running alarm is activated when the load has been below the minimum power limit for an accumulated time of 5 seconds.
Pcut-out is factory-set both for the SQ and SQE pumps.
On SQE, the dry-run limit can be adjusted with Grundfos GO

High pump efficiency
The hydraulic pump components are polyamide-reinforced with 30 % glass fibre. The hydraulic design ensures high pump efficiency, yielding low energy consumption and thus low energy costs.

High motor efficiency
The motors are designed according to the permanent-magnet principle (PM motor), featuring high efficiency within a wide performance range

Wear resistance
The pump impellers are not fastened to the shaft (''floating''). Each impeller has its own tungsten carbide/ceramic bearing. The design and the materials chosen ensure high wear resistance to sand, thus long product life.

Protection against upthrust
Starting up a pump with a very low counter pressure involves the risk of the entire impeller stack being lifted. This phenomenon is called upthrust. Upthrust may cause breakdown of both pump and motor.
The motors are fitted with an upthrust bearing protecting both pump and motor against upthrust, thus preventing breakdown during the critical start up phase.

Excellent starting capabilities
The integrated electronic unit of the motor includes soft starting. Soft starting reduces the starting current, thus gives the pump a smooth and steady acceleration.
The soft starter minimises the risk of wear of the pump and prevents overloading of the mains during start up.
The excellent starting capabilities are a result of the high locked-rotor torque of the permanent-magnet motor, and the few pump stages. High starting reliability also applies in case of low voltage supply

Overvoltage and undervoltage protection
Overvoltage and undervoltage may occur in case of unstable voltage supply.
The integrated protection of all motors prevents damage to the motor in case the voltage moves outside the permissible voltage range.
The pump is cut out if the voltage falls below 150 V or rises above 315 V. The motor automatically restarts when the voltage returns within the permissible range.
Consequently, no extra protection relay is required.

Overload protection
If the pump is exposed to heavy load, the current consumption rises. The motor automatically compensates for this by reducing the speed. If the speed falls below 3000 min-1, the motor is cut out.
If the rotor is prevented from rotating, it is automatically detected and the power supply is cut out.
Consequently, no extra motor protection is required.

Overtemperature protection
A permanent-magnet motor gives off very little heat to its surroundings. In combination with an efficient internal circulation system leading the heat away from the rotor, stator and bearings, optimum operating conditions are ensured for the motor.
As an extra protection, the electronic unit has a built-in temperature sensor. When the temperature exceeds a critical limit, the motor is cut out. When the temperature returns below the limit, the motor is automatically cut in again.

Reliability
The motors have been designed with high reliability and have the following features:
• tungsten carbide or ceramic bearings
• thrust bearings protecting against downthrust
• product life equal to conventional AC motors.

Variable speed
The MSE 3 motor enables variable speed control within the range of 3,000 to 10,700 min-1. The pump can be set to operate in any duty point within the 3,000 to 10,700 min-1 performance range of the pump.
Consequently, the pump performance can be adapted to any specific requirement.
The variable-speed control facility requires the use of a CU 300 or CU 301 control unit and Grundfos GO Remote

Installation
SQ and SQE may be installed vertically, horizontally or in any position in between.
Note: The pump must not fall below the horizontal level in relation to the motor.

The following features ensure simple installation of the pump:
• built-in non-return valve with spring
• low weight facilitating handling
• installation in 3-inch or larger boreholes
• on/off switch without extra motor starter or starter box necessary
• SQE available with cable with a motor plug (up to 100 m).

For horizontal installation, we recommend that you install the pump in a flow sleeve, for the following reasons:
• to ensure sufficient flow velocity past the motor, thus provide sufficient cooling
• to prevent motor and electronic unit from being buried in sand or mud.

Service
The modular pump and motor design facilitates installation and service. The cable and plug are fitted to the pump with screws, which enables replacement.

Pump Sizing
SQ 1-35
SQ 1-50
SQ 1-65
SQ 1-80
SQ 1-95
SQ 1-110
SQ 1-125
SQ 1-140
SQ 1-155

SQ 1-35 (-N)
SQE 1-35 (-N)
SQ 1-50 (-N)
SQE 1-50 (-N)
SQ 1-65 (-N)
SQE 1-65 (-N)
SQ 1-80 (-N)
SQE 1-80 (-N)
SQ 1-95 (-N)
SQE 1-95 (-N)
SQ 1-110 (-N)
SQE 1-110 (-N)
SQ 1-125 (-N)
SQE 1-125 (-N)
SQ 1-140 (-N)
SQE 1-140 (-N)
SQ 1-155 (-N)
SQE 1-155 (-N)

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tubewell drilling, telaga air, perigi air, water well driller, underground water exploration, 水井，地下水源，水井钻探，干净饮用水，灌溉
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Ebara DMLV Submersible pump with vortex impeller cast iron, Ebara DEMINY Submersible dewatering pump, Ebara EJECTOR EBARA Ejector System, Ebara EU HIGH CAPACITY Submersible Dewatering Pump, Ebara EU HIGH HEAD SERIES Submersible Dewatering Pump, Ebara EUA High-Head Submersible Dewatering Pump, Ebara EUC Submersible Dewatering Pump, Ebara EUK & EUKZ Submersible Dewatering Pump, Ebara EUL Submersible Dewatering Pump, Ebara EUX Automatic-Operated Submersible Dewatering Pump, Ebara ENH Submersible Powerful Sand Pump, Ebara ENZ2 Heavy duty submersible sand pump, Ebara ES Submersible dewatering pump, Ebara DMLF Non-clog sewage pump, Ebara DF Submersible sewage pump with cutter, Ebara DAR Submersible effluent pump, Ebara CONTROL BOX Control Boxes for Single Phase Submersible Electric Motors 3″-4″, Ebara DE Submersible aerator (for sewage water and contaminants), Ebara EHS Submersible Sand Pump, Ebara INT 6 6″ Water Filled Submersible Motors, Ebara CDX Single impeller centrifugal electric pumps with hydraulics in AISI 304, Ebara 3 SERIES Centrifugal pump in AISI 304-AISI 316, Ebara EVMS Vertical multi-stage stainless steel pump, Ebara GS Centrifugal pumps close coupled and standardized, Ebara GSD Cast iron end suction motor pump, Ebara CB Horizontal double suction pump, Ebara Fire Pump System EBARA Fire Pump System, Ebara LPDA Vertical in-line pump, Ebara EFQT.EFQU Self priming trash pump, Ebara 2CDX Twin impeller centrifugal pump-AISI 304, Ebara 3D SERIES Close coupled and standardized single-stage centrifugal pumps, Ebara EVM Vertical multi-stage stainless steel pump, Ebara FSA End suction volute pump, Ebara FSDA Mono-block end suction volute pump, Ebara CSA/CNA Horizontal split casing pump, Ebara FSPA & CNPA Fire fighting pump, Ebara LPDC Vertical in-line pump, Ebara COMPACT Horizontal multi-stage electric pump, Ebara SQPB Self-priming pump, Ebara EVMR Stainless steel vertical multi-stage centrifugal pump, Ebara FSC End suction volute pump, Ebara CSA-V / CNA-V Vertical pump, Ebara CNC Horizontal split casing pump, Ebara DWC Closed impeller centrifugal pump in AISI 304, Ebara DWO Open impeller centrifugal pump-AISI 304, Ebara FSSC Stainless steel end suction pump, Ebara CDX(L) Stainless steel centrifugal electric pump, Ebara SWS-SWT Self-priming centrifugal pump for pools, Ebara PRA Peripheral electric pump, Ebara MULTIGO Vertical multi-stage pump, Ebara MATRIX Horizontal multi-stage electric pump, Ebara JESX/JEX Self-priming electric pumps in AISI 304, Ebara LPS In-line centrifugal pump, Ebara MS SERIES Horizontal multi-stage pump, Ebara MPM Multistage centrifugal pump, Ebara GP Gear pump, Ebara SZ Mixed flow pump, Ebara AGA-AGC Self-priming electric pumps in cast iron, Ebara AGE-AGF Self-priming “JET” pump, Ebara EVDP Vertical turbine pump, Ebara CDA Twin impeller pump (cast iron), Ebara CMA-B-C-D/CMR Single impeller centrifugal electric pump in cast iron, Ebara ELINE/ELINE-D Vertical in-line pump, Ebara FHA End suction volute pump, Ebara FMQ Self-priming multi-stage pump, Ebara FQ-FQD Self-priming pump, Ebara FSQ Self-priming volute pump, Ebara FSSA Stainless steel end suction volute pump, Ebara IBL End suction volute pump, Ebara MD/MMD End suction close coupled cast iron monobloc centrifugal pumps, Ebara MDM Mono bloc pump, Ebara MSQ Self-priming multi-stage pump, Ebara SQ Self-priming volute pump, Ebara Solar Pump Solar water pump system, Ebara CN Horizontal double suction volute pump, Ebara VDM Vertical double suction volute pump, Ebara VY/VZ Vertical mixed flow pump, Ebara DSC3/DSCA3 Submersible motor pump, Ebara DSCA4 Submersible Dry-Pit Sewage Pump, Ebara Gate Pump Integrated gate pump system, Ebara DSEI Inclined submersible motor pump, Ebara DSZ4 Submersible propeller pump, Ebara DSZ Submersible propeller pump, Ebara VLY Vertical mixed-flow pump, Ebara VLZ Vertical mixed-flow pump, Ebara DSCF Submersible sewage pumps, Ebara DSMZ Submersible screw volute pump, Ebara C, SPD & SPW Pipelines pump, Ebara BMS Submersible motor pump, Ebara BMSS Submersible motor pump, Ebara VWS Vertical volute pump, Ebara VWMS Vertical pump, Ebara HS Horizontal Axial – Flow Pump, Ebara HZ Horizontal Mixed – Flow Pump, Ebara FSSC Stainless steel end suction pump, Ebara FSSA Stainless steel end suction volute pump, Ebara GSO Horizontal end suction volute process pump, Ebara GSS End suction volute pump, Ebara SAL EBARA slurry pump, Ebara TFS/TLS Single suction process pump (chemical / light slurry), Ebara ULP Pulp pump, Ebara NV/NVD EBARA water ring vacuum pump, Ebara IFW Single stage, end suction, foot support process pump, Ebara FPS Ebara PENTAM plastic pump, Ebara MS210/220/230/420 Horizontal multi-stage pump, Ebara GP/GPA Gear pump, Ebara VWS Vertical volute pump, Ebara VWMS Vertical pump, Ebara UCW Single Stage, Single Suction, Centerline Supported, Ebara KS Single Stage, Double Suction, Centerline Support, Ebara DCS DCD Horizontal Double Case Pumps, Ebara IFW Single stage, end suction, foot support process pump, Ebara HSB HDB High Pressure Double Case Pumps, Ebara VPCS VPCH Vertical Multistage Canned Pumps, Ebara SP SPD Horizontal Multistage Pumps, SPR SPRB Horizontal Multistage Pumps, Ebara SS SSD Horizontal Ring Section Pump, Ebara R2, R2D Two Stage, Centerline Support, Ebara LPW Vertical, In-Line, Centrifugal, Ebara VWS VWMS Vertical Volute Pumps, Ebara VYB Vertical Mixed-Flow Pumps, Ebara EJECTOR EBARA Ejector System, Ebara Double JET-E (P2) Compact booster set, Ebara UE-MONO (I) Automatic variable speed booster system, Ebara UE-MINI (P) Variable speed booster system, Ebara UE-MONO Variable speed booster system, Ebara UE-MINI Variable speed booster system, Ebara UE-PRO Variable speed booster system, Ebara UN Variable speed (VFD) booster system, Ebara UD Ebara flow switch controlled booster system, Ebara HP Ebara Hydro Pneumatic booster system, Ebara Cryogenic Pump Ebara cryogenic pumps and expanders, Ebara BSM 4″ 4″ submersible motor, Ebara BSM 3S Full stainless steel submersible motor, Ebara BSM HT Submersible motor, Ebara BSP Stainless steel submersible pump, Ebara BSP 4″ 4″ submersible pump, Ebara EVDP Vertical turbine pump, Wilo-Stratos PICO, Wilo-Yonos PICO, Wilo-Yonos PICO1.0, Wilo-Yonos PICO-D, Wilo-Varios PICO-STG, Wilo-Star-RS, Wilo-Star-STG, Wilo-Stratos MAXO, Wilo-Yonos MAXO, Voda Air Separators, Voda Air&Dirt Separators, Voda Dirt Separators, Voda Air separators V, Voda Dirt separators V, Voda Dirt Separators, Sinum Double, Sinum Mono, Wilo-Sub TWU 4 GT, Wilo-Plavis 011-C, Wilo-Plavis 013-C, Wilo-Plavis 015-C, Wilo-Sub TWI 5/TWI 5-SE, Wilo-Sub TWI 5-SE Plug & Pump, Wilo-Extract FIRST, Wilo-Sub TWU 3 Plug & Pump, Wilo-Sub TWU 4 Plug & Pump, Wilo-Sub TWI 5-SE Plug & Pump, Wilo-Sub TWU 4, Wilo-Sub TWU 3, Wilo-Actun FIRST-SPU4, Wilo-Sub TWI 4, Wilo-RAIN1, Wilo-RAIN3, Wilo-HiMulti 3, Wilo-Initial Jet, Wilo-Jet WJ, Wilo-Isar BOOST5, Wilo-HiMulti 3 C, Wilo-HiMulti 3 H, Wilo-Jet FWJ, Wilo-Jet HWJ, Wilo-Sub TWI 5/TWI 5-SE, Wilo-Sub TWI 4, Wilo-HiMulti 3, Wilo-HiPeri, Wilo-Initial Jet System, Wilo-Isar BOOST5, Wilo-PB, Wilo-Medana PE3, Wilo-Initial Drain, Wilo-Rexa MINI3, Wilo-Rexa MINI3-S, Wilo-Rexa UNI, Wilo-Rexa FIT, Wilo-Rexa PRO, Wilo-HiDrainlift 3, Wilo-HiSewlift 3, Wilo-Rexa UNI, Wilo-Rexa FIT, Wilo-Rexa PRO, Wilo-HiDrainlift 3, Wilo-HiSewlift 3, Wilo-DrainLift SANI-S, Wilo-DrainLift SANI CUT-S, Wilo-DrainLift SANI-M, Wilo-DrainLift SANI CUT-M, Wilo-DrainLift WS 40/50 Basic, Wilo-Initial Drain, Wilo-Padus MINI3, Wilo-Padus UNI, Wilo-Drain TM/TMW/TMR 32, Wilo-Drain TS/TSW 32, Wilo-Drain LP, Wilo-Initial Waste, Wilo-Rexa MINI3, Wilo-Rexa UNI, Wilo-Rexa FIT, Wilo-Plavis 011-C, Wilo-Plavis 013-C, Wilo-Plavis 015-C, Wilo-DrainLift BOX, Wilo-DrainLift WS 40/50 Basic, Wilo-EMU sprinkler pumps D..., K... and KM..., Wilo-FLA Compact-1 Helix V, Wilo-FLA Compact-2 Helix V, Wilo-FLA-1, Wilo-FLA-2, Wilo-FireSet UL FM, Wilo-SiFire EN, Wilo-SiFire Easy, Wilo-SiFire FIRST, Clazzen 3UP DC Submersible Pump, Clazzen 3US DC Submersible Pump, Clazzen 6″ Waste Water Pump, Clazzen ATTS Pool Pump, Clazzen Blower TSD-150, Clazzen Boiler Pump, Clazzen Booster Pump, Clazzen Booster Pump – CBI, Clazzen Booster Pump – CBS, Clazzen CA Pump, Clazzen CBI3-30 Water Booster Pump, Clazzen Industry Pump, Clazzen Koi / Series Pump / WQ / Sewage Pump, Clazzen RO / Sea Water, Clazzen Self-Priming Centrifugal Pump, Clazzen Sewage Pump, Clazzen Single Phase Automatic Controller – 0.75kw – 1.5kw (1hp – 2hp) 240v/1ph/50hz, Clazzen Solar System – Tube Well Pump, Clazzen SP Submersible Pump, Clazzen Stainless Steel Vertical Multistage Pump with Variable Speed Controller, Clazzen SUPB Swimming Pool Pump, Clazzen Three Phase Automatic Controller – 1.5kW – 15kw (2hp – 20hp) 415v/3ph/50hz, Clazzen UNI – E CBI, Clazzen Vertical Pump

Grundfos
Grundfos CMB, Grundfos CMBE, CMBE TWIN, CMBE TWIN, two-pump pressure boosting for constant pressure, including cascade control and pump alternation, CMBE, a variable-speed pump for constant pressure, CMB-SP PM 2, a self-priming pump with a pressure control unit, type Pressure Manager 2, CMB PM 2, pump with a pressure control unit, type Pressure Manager 2, CMB-SP PM 1, a self-priming pump with a pressure control unit, type Pressure Manager 1, CMB PM 1, a pump with a pressure control unit, type Pressure Manager 1, CMB PT, a CM pump with a vertical pressure tank, CMB PS, a CM pump with a pressure switch. Grundfos Alpha circulator pump, Grundfos Alpha Reader, Grundfos AP, Grundfos BM Encapsulated Pump, Grundfos BM hp Encapsulated Pump, Grundfos BMS horizontal multistage pump, Grundfos BMXS horizontal multistage pump, Grundfos CIM/CIU Communication Interface Module/Communication Interface module, Grundfos CM/CME end suction close coupled multistage, Grundfos Comfort circulator pump, Grundfos Conflict condensate removal pump, Grundfos Control CUE, Grundfos Control DC, Grundfos Control MP204, Grundfos Control MPC, Grundfos CU100, Grundfos CU200, Grundfos CU 202, Grundfos CU 241, Grundfos CU 242, Grundfos CU 362, Grundfos CU 300, Grundfos CU 301, Grundfos CUE, Grundfos DELTA HCU, Grundfos Demand driven distribution, Grundfos Disinfection Systems Chlorine, Chlorine Dioxide, Electrochlorination, Grundfos DP Submersible Drain Pump, Grundfos DPI, Grundfos DPK, Grundfos DPS, Grundfos DWK, Grundfos E-box, Grundfos EF, Grundfos FireSafe+ Domestic, Grundfos FireSafe+ Residential, Grundfos FS1, Grundfos Connect, Grundfos GO, Grundfos GO Link, Grundfos GO Solar, Grundfos iSolution Cloud, Grundfos iSolution Monitor, Grundfos GT Tank, Grundfos Hydro EN, Grundfos Hydro MPC, Grundfos Hydro Multi-E, Grundfos Multi-S, Grundfos Solo-E, Grundfos IO 50, Grundfos IO 101, Grundfos IO 101B on/off control, Grundfos IO 113, IO 241, IO 242, IO 351B, Grundfos ISP 40, Grundfos ISP 44, Grundfos Jet Booster, Grundfos Jet Pump, Grundfos KPC submersible wastewater pump, Grundfos laser alignment, Grundfos LC 231, Grundfos 232, Grundfos 241, Grundfos 242, Grundfos Liqtec, Grundfos LS, Grundfos LSV, Grundfos M2, Grundfos MAGNA, Grundfos MG, Grundfos ML, Grundfos MGE, Grundfos MLE, Grundfos MGFlex, Grundfos MIXIT, Grundfos MMG, Grundfos MMS, Grundfos MP 204, Grundfos MS, Grundfos MS 3, Grundfos MS1, Grundfos MSF 3, Grundfos Immersible MT tank mounted pump, Grundfos MTB, Grundfos MTBE, Grundfos Multilift, Grundfos NS End suction close coupled single stage, Grundfos P40 titanium, Grundfos PHT, Grundfos PowerAdapt, Grundfos PS.G, PS.R, PS.W, Grundfos RCME rainwater monitoring and control system, Grundfos RPI, Grundfos RPS, Grundfos RSI, Grundfos S submersible wastewater pump, Grundfos SB, Grundfos SBA, Grundfos SCALA booster pump, Grundfos SCALA1 System, Grundfos SCDS CIU smart digital CHEMPAIRING, Grundfos SE, Grundfos SE/SL 9-30 kW, Grundfos SE/SL, Grundfos SEG, Grundfos Shower pump, Grundfos SL, Grundfos SM113, Grundfos Solar Module, Grundfos Sololift2, Grundfos TP, Grundfos TPE inline single stage pump, Grundfos Unilift CC, Grundfos Unilift AP submersible wastewater pump, Grundfos Unilift KP, Grundfos UNO-/DUOLIFT Lifting Stations, Grundfos UP OEM, Grundfos UP UPS Series 100 circulator pump, Grundfos UPS Home booster circulator pump, Grundfos UPS series 200, Grundfos VFI, Grundfos VFS, Grundfos Wastewater Booster, Grundfos iGRID