GRUNDFOS DATA BOOKLET SQFlex Renewable-energy-based water supply systems 60 Hz
SQFlex Table of contents 1. Product data . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Performance range . Applications . . . . . . SQFlex system . . . . Type keys . . . . . . . Pumped liquids. . . . Curve conditions . . . System overview. . . 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Product data SQFlex 1.
1 SQFlex Product data Applications H Being designed for continuous as well as intermittent operation, the SQFlex system is suitable for water supply applications in remote locations, such as: villages, schools, hospitals, single-family houses • farms (livestock watering, irrigation) • game reserves(watering applications) • conservation areas (pumping of surface water) • floating pump installations for water pumping from ponds and lakes.
1 CU 200 SQFlex control unit Charge controller CU 200 is a combined status, control and communication unit designed for the SQFlex system. Moreover, CU 200 enables the connection of a level switch placed in a water reservoir or tank. The charge controller is used when a battery backup system is installed with an SQFlex pumping system. CIU 903 SQFlex control unit for remote monitoring CIU 903 is a combined monitoring, control and communication unit designed to work directly with a SQFlex pump.
1 SQFlex Product data Type keys Curve conditions Helical rotor pumps Performance range, SQFlex Solar The SQFlex Solar performance range in is based on the following data: Example Code Explanation 6 Rated flow at 3000 rpm [gpm] SQF Type range -2 Number of stages Centrifugal pumps 4" 25 SQF • ambient temperature: 30 °C (85 °F) • 20° northern latitude. • average wind speed (measured over a month) • calculations according to Weibull's factor k=2 • continuous operation over 24 hours.
1 Product data SQFlex System overview SQFlex up to 1400 W (P1) The SQFlex system can be used in various combinations.
1 SQFlex Product data SQFlex up to 2500W (P1) The SQFlex system can be used in various combinations.
2 Features and benefits SQFlex 2. Features and benefits Dry-running protection Over- and undervoltage protection The SQF pump is protected against dry running to prevent damage to the pump. The dry-running protection is activated by a water level electrode placed on the motor cable 0.3 to 0.6 m (12 to 24 in) above the pump, depending on the pump type. The water level electrode measures the contact resistance to the motor sleeve through the water.
2 SQFlex Features and benefits Reliability The MSF 3 motor is developed to achieve high reliability through the following features: • carbon/ceramic bearings • excellent starting capabilities • various protection facilities. Installation Low weight ensures user-friendly handling. • low weight ensuring user-friendly handling. • installation in 3", 4" or larger boreholes. • A motor starter/starter box is not needed. • SQF is available with cable and socket.
3 Applications SQFlex 3. Applications SQFlex Solar The SQFlex Solar system is the simplest of the SQFlex range. 12 7 Benefits The protective circuit incorporated in the motor electronic unit stops the pump in case of dry running or similar situations. By using the IO 50, the power supply to the pump can be switched off manually, for example in the following cases: • There is no need for water supply. • The system requires service.
3 SQFlex Applications SQFlex Solar with CU 200 and level switch The SQFlex Solar system allows solar energy to be stored as water in a reservoir. SQFlex Solar systems with a water reservoir are used, for instance, in the following cases: • There is a need for water supply at night. • For short periods, the solar energy is insufficient to run the pump. • A backup water source is needed.
3 SQFlex During periods of limited solar energy, the SQFlex Solar system provides reliable water supply. The system is connected to an external backup generator via the IO 101. The system switches automatically to operation via generator when the generator is started. If the generator is stopped manually or runs out of fuel, the IO 101 automatically changes back to operation via solar energy.
3 SQFlex Applications SQFlex Solar with CU 200 and backup generator During periods of limited solar energy, the SQFlex Solar system provides reliable water supply. The water supply is ensured by a diesel or gasoline generator connected to the system through the IO 101. The system switches automatically to operation via generator when the generator is started. If the generator is stopped manually or runs out of fuel, the IO 101 automatically changes back to solar energy.
3 SQFlex Solar with backup batteries During periods of limited solar energy, the SQFlex Solar system provides reliable water supply. The water supply is ensured by backup batteries connected to the system through the charge controller. The system is connected as shown in the fig. below. . • Power is provided by the solar panels wired to produce minimum 60 VDC and maximum 110 VDC. • Power from the solar panels is fed into a 48 VDC charge controller, which regulates the current fed to the batteries.
3 SQFlex Applications SQFlex Wind with CU 200 and level switch 8 14 15 The SQFlex Wind system allows wind energy to be stored as water in a reservoir. SQFlex Wind systems with a water reservoir are used in the following cases: • For short periods, when wind energy is insufficient to run the pump. • A backup water source is needed 11 9 As the turbine noise level increases with the wind speed, do not install the wind turbine near residential areas.
3 SQFlex Combi with CU 200 and level switch 8 The SQFlex Combi system allows solar and wind energy to be stored as water in a reservoir. SQFlex Combi systems with a water reservoir are used in the following cases: • For short periods, when the solar or wind energy is insufficient to run the pump. • A backup water source is needed. 14 7 9 11 5 Benefits Combined with CU 200, the level switch has a pump cut-out function when the water reservoir is full.
3 SQFlex Applications SQFlex system with generator as a power supply The SQFlex system is connected to a diesel or gasoline generator. Benefits The system provides water supply 24 hours a day, regardless of the weather. Other benefits: • easy installation • minimal maintenance • few and simple components. 10 5 2 3 4 5 TM022311 1 SQFlex system with generator as power supply Pos.
4 System components SQFlex 4. System components SQF submersible pump The SQF pump is available as a complete unit only. The complete SQF pump consists of the following components: motor • 2.0 m (6ft 7in) cable with water-level electrode and socket • cable guard. TM022217 • SQF pump The MSF motor is to be connected to the power supply as indicated in the fig. below.
4 SQFlex power supply (pos. 6) • pump (pos. 7) • earth (pos. 8) • level switch (pos. 9). kWatt TM078601 CU 200 is a combined status, control and communication unit designed for the SQFlex system. It can be connected to a level switch and is designed for SQFlex power range up to 1400 W and maximum 8.4 A. CU 200 incorporates cable entries for the following connections: • 95 mm (3.75 in) 263 mm (10.35 in) 199mm (7.
4 SQFlex water reservoir full (level switch) • pump running. Warning Level switch External stop NC C 1 2 3 4 5 6 7 8 9 10 TM079822 • NO CIU 903 is a combined monitoring, control and communication unit designed to work directly with a SQFlex pump. When combined with a CIM 280 GRM module, it enables remote monitoring through Grundfos Go. Moreover, CIU 903 can be connected to a start/stop switch, a level switch or a pulsating water meter. .
4 SQFlex IO 101 SQFlex switch box The IO 50 is designed for solar-powered SQFlex systems.The IO 50 enables the pump in an SQFlex Solar system to be manually started and stopped. It functions as a box that connects all necessary cables. The IO 101 is designed for solar-powered SQFlex systems. The IO 101 enables the connection of a backup generator in case of insufficient solar energy. The switching between solar power and generator must be made manually.
IO 102 SQFlex breaker box Charge controller The IO 102 is designed for wind-powered SQFlex systems. The IO 102 enables the pump in an SQFlex Wind or Combi system to be manually started and stopped. The ON/OFF switch has a built-in "electrical brake" for the turbine. When the switch is in OFF position, the turbine stops or slows down. The IO 102 rectifies the three-phase AC voltage from the wind turbine into DC voltage.
5 SQFlex System sizing 5. System sizing Solar panel wiring Sizing of an SQFlex system Grundfos has an online tool for the sizing of SQFlex systems. See Grundfos Product Center. The sizing tool covers both solar- and wind-powered systems. For sizing the proper SQFlex system, the following parameters are required: • location of installation • maximum head • quantity of water. Methods of solar panel wiring Solar panels can be connected in the following methods: 1. series wiring 2. parallel wiring 3.
5 Parallel wiring Pos. Description When wiring panels in parallel, results are the opposite of series wiring: amperages add and voltage stays the same. To wire panels in parallel, connect the positive terminal of each panel to the positive terminal of the other panels and negative terminal of each panel to the negative terminal of the other panels. 1 Pair #1 2 Panel #1 3 Panel #2 4 Pair #2 5 Panel #3 6 Panel #4 3 2 4 TM062378 1 Solar panel wiring in parallel Pos.
6 SQFlex Performance curves 6. Performance curves 3 SQF-2 Q Q [m³/h] [US GPM] 3 SQF-2 3.2 3.0 35 50 ft 65 ft 80 ft 10 ft 0 13 ft 0f t 16 5f t 19 5f t 23 0f t 26 0f t 29 5f t 33 0f t 36 0f t 39 5f t 0.7 2.8 0.6 2.6 2.4 0.5 2.2 2.0 0.4 1.8 1.6 0.3 1.4 1.2 1.0 0.2 0.8 0.6 0.1 0.4 0.2 0.0 0.00 0.05 0 0.10 50 0.15 100 0.20 0.25 150 0.30 200 0.35 250 0.40 0.45 300 0.50 350 0.55 400 P1 [hp] P1 [W] TM022426 0.0 3 SQF-3 Q Q [m³/h] [US GPM] 3 SQF-3 3.2 3.
6 SQFlex Q Q [m³/h] [US GPM] Performance curves 5 SQF-80 5 SQF -80 10 15 ft 2.0 9 35 ft 8 50 ft 7 1.5 65 ft 6 5 1.0 100 ft 4 3 0.5 130 ft 2 0.0 0 0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.22 0.24 0.26 0.28 0.30 0.32 0.34 0.36 0.38 0.40 60 80 100 120 140 160 180 200 220 240 260 P1 [hp] P1 [W] 280 TM068848 1 5 SQF-200 Q Q [m³/h] [US GPM] 4.0 5 SQF-200 18 65 ft 3.5 16 100 ft 14 3.0 130 ft 12 165 ft 2.5 10 2.0 195 ft 8 1.0 230 ft 6 4 0.5 2 0.0 0 0.0 0 0.1 100 0.2 0.
6 SQFlex Q Q [m³/h] [US GPM] 6 SQF-2 ft ft ft 36 0 5.6 1.2 33 0 29 5 26 0 ft ft ft 6.0 23 0 35 50 ft f 65 t f 80 t ft 10 0f t 13 0f t 18 5f t 19 5f t 6.4 1.4 39 5 Performance curves 6 SQF-2 5.2 4.8 1.0 4.4 4.0 0.8 3.6 3.2 0.6 2.8 2.4 2.0 0.4 1.6 1.2 0.2 0.8 0.4 0.0 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60 0.65 0.70 0.75 0.80 0.85 0.90P1 0 50 100 150 200 250 300 350 400 450 500 550 600 650 [hp] P1 [W] TM022427 0.
6 SQFlex Q Q [m³/h] [US GPM] 11 SQF-2 ft ft 39 5 ft 36 0 29 5 ft ft ft ft 11 33 0 2.5 26 0 12 23 0 ft ft 19 5 18 5 13 13 0 15 ft 35 ft 50 ft 65 f 80 t ft 10 0f t 14 3.0 Performance curves 11 SQF-2 10 2.0 9 8 1.5 7 6 5 1.0 4 3 0.5 2 1 0 0.0 0 0.1 100 0.2 0.3 200 0.4 300 0.5 0.6 400 0.7 500 0.8 600 0.9 1.0 700 1.1 800 1.2 1.3 900 1.4 1000 1.5 1100 1.6 1.7 1200 1.8 P1 1300 [hp] P1 [W] TM022428 0.
6 SQFlex Performance curves 15 SQF-290 Q Q [m³/h] [US GPM] 5.0 22 15 SQF-290 4.5 20 195 ft 4.0 3.5 260 ft 18 330 ft 16 14 395 ft 3.0 12 2.5 460 ft 10 2.0 8 1.0 525 ft 6 4 0.5 2 0.0 0 0.4 0.6 400 0.8 600 1.0 1.2 800 1.4 1000 1.6 1200 1.8 2.0 1400 2.2 1600 2.4 2.6 1800 2.8 2000 3.0 3.2 2200 P1 [hp] 2400 P1 [W] TM078122 1.5 25 SQF-3 Q Q [m³/h] [US GPM] 10 25 SQF-3 44 7 ft 40 15 ft 8 36 35 ft 32 50 ft 28 6 24 20 4 16 12 2 8 4 0 0.0 0.1 0.1 0.2 0.2 0.3 0.
6 SQFlex Q Q [m³/h] [US GPM] 10 25 SQF-7 44 40 8 Performance curves 25 SQF-7 35 ft 50 ft 36 65 ft 80 ft 32 100 ft 28 115 ft 6 130 ft 24 150 ft 20 185 ft 4 16 12 2 8 4 0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 0 100 200 300 400 500 600 700 800 900 1000 1100 P1 [hp] P1 [W] 1200 1300 TM022430 0 22 SQF-220 Q Q [m³/h] [US GPM] 9 8 7 22 SQF-220 40 36 65 ft 130 ft 32 195 ft 28 6 24 260 ft 5 20 4 330 ft 16 2 12 8 1 4 0 0 0.
6 SQFlex Performance curves 35 SQF-4 Q Q [m³/h] [US GPM] 35 SQF-4 65 14 60 15 ft 55 35 ft 12 50 ft 50 65 ft 10 45 80 ft 40 8 35 100 ft 30 6 25 20 115 ft 4 15 2 10 5 0 0.0 0 0.1 0.2 100 0.3 200 0.4 300 0.5 0.6 400 0.7 500 0.8 0.9 600 1.0 700 1.1 800 1.2 1.3 900 1.4 1000 1.5 1.6 1100 P1 [hp] P1 [W] TM065835 0 30 SQF-160 Q Q [m³/h] [US GPM] 11 10 45 9 40 8 35 7 6 30 SQF-160 50 65 ft 130 ft 195 ft 30 25 5 20 260 ft 4 15 3 10 1 5 0 0 0.0 0 32 0.
6 SQFlex Q Q [m³/h] [US GPM] 45 SQF-4 85 18 16 80 75 15 ft 70 35 ft 65 14 12 Performance curves 45 SQF-3 50 ft 60 65 ft 55 50 10 45 80 ft 40 8 35 30 6 25 20 4 15 2 10 5 0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9P1 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 [hp] P1 [W] TM065836 0 77 SQF-3 Q Q [m³/h] [US GPM] 77 SQF-3 120 25 110 15 ft 100 20 35 ft 90 80 50 ft 70 15 60 65 ft 50 10 40 80 ft 30 5 20 10 0 0.
7 SQFlex Technical data 7. Technical data Dimensions and weights S TM022209 L ø8 B Pos. Description ø8 ø8 mm (5/16") Minimum borehole Net weight B S [mm (in)] 1 [kg (lb)] 1 3 SQF-2 1185 (47) 74 (2.9) 1" NPT 76 (3) 9.4 (20.7) 3 SQF-3 1247 (49) 74 (2.9) 1" NPT 76 (3) 9.7 (21.4) 5 SQF-80 990 (39) 74 (2.9) 1 1/4" NPT 76 (3) 5.1 (11.2) 5 SQF-200 861 (34) 74 (2.9) 1 1/4" NPT 76 (3) 5.1 (11.2) 6 SQF-2 1247 (49) 74 (2.9) 1" NPT 76 (3) 7.9 (17.
7 SQFlex Motor type DC Voltage [VDC] AC Voltage [VAC] Speed [RPM] Maximum power input P1 [W] Maximum current [A] 3 SQF-2 MSF 3 30-300 90-240 3600 1400 8.4 3 SQF-3 MSF 3 30-300 90-240 3600 1400 8.4 5 SQF-80 MSF 3 30-300 90-240 10700 300 8.4 5 SQF-200 MSF 3 30-300 90-240 10700 1000 8.4 6 SQF-2 MSF 3 30-300 90-240 3600 1400 8.4 6 SQF-3 MSF 3 30-300 90-240 3600 1400 8.4 11 SQF-2 MSF 3 30-300 90-240 3600 1400 8.
7 SQFlex Technical data CU 200 SQFlex control unit Voltage 30-300 VDC, 8.4 A 90-240 VAC, 8.4 A Power consumption 5W Current consumption Maximum 130 mA Pump cable Maximum length between the CU 200 and the pump: 300 m (1000 ft) Maximum length between the CU 200 and the level switch: 500 m (1500 ft) Backup fuse Maximum 10 A Radio noise The CU 200 complies with the EMC Directive 89/336/EEC. It is tested according to the standards EN 55014 and EN 55014-2.
7 SQFlex Voltage Maximum 300 VDC, 12 A Maximum 265 VAC, 12 A Enclosure class IP55 Ambient temperature During operation: -30 °C to +50 °C (-22 °F to +122 °F) During storage: -30 °C to +60 °C (-22 °F to +140 °F) Marking CE Technical data IO 50 SQFlex switch box IO 101 SQFlex switch box Voltage 230 VAC - 15 % to + 10 %, 50/60 Hz (internal relay) Maximum 225 VDC, 8.4 A Maximum 255 VAC, 8.4 A 115 VAC - 15 % to + 10 %, 50/60 Hz (internal relay) Maximum 225 VDC, 8.4 A Maximum 125 VAC, 8.
7 SQFlex Pos. Component Material 1 Valve casing Polyamide EN/DIN AISI 1a Outlet chamber Stainless steel 1d O-ring NBR 1.4301 304 2 Valve cup Polyamide 3 Valve seat Silicone (LSR) 6 Upper flange Stainless steel 1.4401 316 Retaining ring Stainless spring steel 7a 1.4301 304 9 Pump stator Stainless steel/ EPDM 1.4301 304 13 Pump rotor Stainless steel 1.4401 316 16 Torsion shaft Stainless steel 1.4401 316 39 Valve spring Stainless spring steel 1.
7 SQFlex Pos. Component Material EN/DIN AISI 1.
7 SQFlex Technical data Material specification, 16 SQF-10, 25 SQF-3 Pos. Component EN AISI 1 Valve casing Material Stainless steel 1.4301 304 2 Valve cup Stainless steel 1.4301 304 3 Valve seat NBR 7 Neck ring NBR/TPU 8 Bearing NBR Washer for stop ring Carbon/graphite HY22 in PTFE mass 9 Chamber Stainless steel 1.4301 304 12 Impeller Stainless steel 1.4301 304 14 Inlet interconnector Cast stainless steel 1.4308 CF8 Stainless steel 1.
7 SQFlex EN AISI 1 Valve casing Material Cast stainless steel 1.4301 304 2 Valve cup Cast stainless steel 1.4301 304 3 Valve seat NBR-FKM 7 Neck ring TPU/PPS-FKM 8 Bearing LSR/FKM 8a Washer for stop ring Carbon/graphite HY22 in PTFE mass 9 Chamber Stainless steel 1.4301 304 13 Impeller Stainless steel 1.4301 304 14 Inlet interconnector Cast stainless steel 1.4308 CF8 15 Strainer Stainless steel 1.4301 304 16 Shaft complete Stainless steel 1.
7 SQFlex Pos. Component Material EN/DIN AISI 201 Stator with sleeve Stainless steel 1.4301 304 1.4301 304 1.4401 316 202 Rotor Stainless steel 202a Stop ring PP 202c Shaft end Stainless steel 203 Thrust bearing, stationary Stainless steel/ carbon 205 Bearing plate with radial bearing Silicon carbide 1.4301 304 206 Thrust bearing, rotating Stainless steel/ aluminium oxide Al2O3 1.
7 SQFlex Pos. Component Material EN/DIN AISI 201 Stator Stainless steel 1.4301 304 202 Rotor Stainless steel 1.
8 SQFlex Product numbers 8. Product numbers SQF submersible pump IO 101 SQFlex switch box TM022217 Product The SQF pump is supplied with a 2 m (6ft 7in) cable.
9 Accessories SQFlex 9. Accessories TM022407 Level switch Product number Description Level switch High water level: Contact is closed. Low water level: Contact is open. 16650 TM077621 Zinc anodes Description Product number 1 zinc anode: 99722879 A set of fasteners: 99812400 TM077637 Sacrificial anodes are placed on the outside of the pump and motor as a protection against corrosion. The number of anodes depends on the pump and the motor. Usually 2 anodes are needed.
10 SQFlex Grundfos Product Center 10. Grundfos Product Center Online search and sizing tool to help you make the right choice. From the international view, you can select your specific country to view the product range available to you. International view: https://product-selection.grundfos.
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