The CU 200 control unit is a combined status, control, and communication unit specially developed for the SQFlex system. Furthermore, the CU 200 enables the connection of a level switch.

The CU 200 incorporates cable entries for:

Communication between the CU 200 and the pump takes place via the pump power supply cable. This is called mains borne signalling (or Power Line Communication), and this principle means that no extra cables between the CU 200 and the pump are required. It is possible to start, stop and reset the pump by means of the on/off button.

The CU 200 control unit offers:

The following indications allow the operation of the pump to be monitored:

The CU 200 offers the following alarm indications:

In addition, the CU 200 shows the symbols of the energy supply options.

CU 202 is designed for monitoring and controlling SQFlex submersible pumps in solar applications.

The simple user interface and built-in Bluetooth module ensure easy installation and configuration. The Bluetooth connection to the Grundfos GO app offers extensive setup and monitoring options.

CU 202 is pre-configured for tank filling, the most used application, offering a plug-and-pump solution, which saves time on commissioning. For other applications, the controller provides several control modes, which can be easily selected and set through the Grundfos GO app. Grundfos GO makes the configuration easier and allows installers to set up high-performing systems.

CU 202 communicates with the pump through the power cable. This communication principle is called mains borne signaling or powerline communication and means that no additional cables are required to the pump.

Grundfos GO offers detailed information and logs that help the installer to find the root cause in failure situations. In addition, the controller can use Wi-Fi, GENIbus, or Modbus to monitor the system remotely either through Grundfos Connect or another SCADA system. Remote monitoring saves time when inspecting installations.

CU 202 is equipped with power and pump connections and offers 2 configurable inputs and outputs. Additionally, a backup battery can be added to the controller to maintain communication and measurements when solar power is insufficient.

The display of the controller shows:

The pump can be turned on and off through the display of the controller. The controller can display a read-out of the application-related data. It is also possible to adjust the setpoint. The LEDs on the display of the controller can be set to sleep mode, for example, to avoid attracting wildlife.

The following logs are available through Grundfos GO or remote monitoring:

CU 202 indicates warnings and alarms on the display of the controller. Additionally, the Grundfos GO app provides further information on these events including the recommended solutions.

IO 101

The IO 101 switch box is designed specifically for solar-powered SQFlex systems. The IO 101 enables the connection of a generator supply backup in case of insufficient solar radiation. The switching between solar power and the generator must be made manually. In case the generator is stopped manually or runs out of fuel, the IO 101 will automatically switch to the solar energy supply. The IO 101 functions as a connection box joining all necessary cables.

RSI 3×380-440V IP66 15kW 31A

Renewable Solar Inverter RSI is an off-grid solar inverter to enable end-user to use solar power for a wide range of water applications. RSI is customized specifically to be compatible with Grundfos pumps. With the built-in MPPT and various protection software, it delivers an efficient and reliable solar system solution.

RSI offers the following inputs and output:

RSI 3×380-440V IP66 30kW 61A

Renewable Solar Inverter RSI is an off-grid solar inverter to enable end-user to use solar power for a wide range of water applications. RSI is customized specifically to be compatible with Grundfos pumps. With the built-in MPPT and various protection software, it delivers an efficient and reliable solar system solution.

RSI offers the following inputs and output:

RSI 3×380-440V IP66 4kW 9.6A

Renewable Solar Inverter RSI is an off-grid solar inverter to enable end-user to use solar power for a wide range of water applications. RSI is customized specifically to be compatible with Grundfos pumps. With the built-in MPPT and various protection software, it delivers an efficient and reliable solar system solution.

RSI offers the following inputs and output:

RSI 3×380-440V IP66 5.5kW 12A

Renewable Solar Inverter RSI is an off-grid solar inverter to enable end-user to use solar power for a wide range of water applications. RSI is customized specifically to be compatible with Grundfos pumps. With the built-in MPPT and various protection software, it delivers an efficient and reliable solar system solution.

RSI offers the following inputs and output:

RSI 3×380-440V IP66 7.5kW 16A

Renewable Solar Inverter RSI is an off-grid solar inverter to enable end-user to use solar power for a wide range of water applications. RSI is customized specifically to be compatible with Grundfos pumps. With the built-in MPPT and various protection software, it delivers an efficient and reliable solar system solution.

RSI offers the following inputs and output:

Grundfos SQF 3-105

Reliable Performance for Medium Heads and Flow Rates

The Grundfos SQF 3-105 centrifugal pump is meticulously engineered for medium heads and flow rates, making it an optimal choice for a wide range of water supply projects. Equipped with dynamic features and built using high-quality materials such as stainless steel and polyamide, this pump ensures exceptional durability and efficiency, even in demanding environments.

Sustainability Powered by Renewable Energy

The SQFlex system stands out with its commitment to sustainability, utilizing renewable energy sources like solar and wind energy. Designed to adapt seamlessly to various installation requirements, this system offers unmatched flexibility in energy supply and performance. Whether your site conditions are unique or standardized, the SQFlex system guarantees a dependable, eco-conscious water solution.

Advanced Features for Optimal Protection and Efficiency

What sets the SQFlex centrifugal pump apart is its innovative technology. It features a built-in Maximum Power Point Tracking (MPPT) system, ensuring optimal energy utilization. The pump also includes advanced protective mechanisms, such as dry-running, voltage, and overload protection, further enhancing its reliability and long lifespan under varying operational conditions.

With UKCA, CE, EAC, CN RoHS, Exempt, Morocco, and Sepro certifications, the SQF 3-105 pump meets global quality standards. It’s more than a water pump—it’s a versatile, sustainable, and highly efficient tool for modern water supply challenges.

Grundfos SQF 5-70 – Reliable Performance with Renewable Energy

The Grundfos SQF 5-70 centrifugal pump is engineered for medium heads and flow rates, making it a cornerstone of sustainable water solutions. Powered by the innovative SQFlex system, this pump integrates renewable energy sources such as solar and wind energy. Its superior adaptability ensures that it can be customized to meet diverse site-specific needs, delivering reliable performance wherever it’s installed.

Advanced Features and Design

The SQFlex system offers cutting-edge functionalities, including a wide voltage range, built-in Maximum Power Point Tracking (MPPT), and protections against dry-running, voltage irregularities, and overload. Built with premium materials like stainless steel (DIN W.-Nr. 1.4301 AISI 304) and polyamide impellers, the pump is not only durable but also optimized for long-term efficiency. With a maximum operating pressure of 15 bar and a minimum borehole diameter of 76 mm, its robust design ensures compatibility with challenging applications.

Technical Excellence for Precision Use

Equipped with an MSF3 motor, the SQF 5-70 pump delivers a rated power of 1.85 kW and operates efficiently at voltages ranging from 90-240V (AC) or 100-300V (DC). The motor’s IP68 enclosure and internal thermal protection guarantee safety and reliability under varying conditions. Weighing 9.14 kg, the pump is lightweight yet powerful, with an impressive rated speed of 10,700 rpm. Its certification approvals, including UKCA, CE, and EAC, highlight its compliance with global standards.

Why Choose the SQF 5-70?

If you’re looking for a water supply solution built to last, the SQF 5-70 ensures efficiency, durability, and sustainability. Ideal for installations across Europe, South America, and Japan, this centrifugal pump bridges reliability and green energy innovation, making it the perfect choice for your water pumping needs.

Advanced Water Supply Solution for Medium Heads and Flow Rates

The SQF 1.2-3 SQFlex centrifugal pump is a versatile and eco-friendly solution designed for medium heads and flow rates. Perfect for various water supply needs, the SQFlex system leverages renewable energy sources — including solar and wind — to deliver exceptional performance and sustainability. With adaptability at its core, this pump integrates seamlessly into diverse installation environments while ensuring reliability and efficiency.

Innovative Technology Features for Optimal Performance

Equipped with advanced features such as built-in maximum power point tracking (MPPT), dry-running protection, voltage safeguards, and overload protection, the SQFlex system exemplifies cutting-edge design. Its wide voltage range supports both AC (90-240 V) and DC (30-300 V) power inputs, allowing users to utilize various energy sources efficiently. The direct-on-line starting method further enhances operational simplicity, ensuring ease of use for both new and experienced users.

Key materials, including stainless steel components, contribute to robust durability and corrosion resistance. The pump, impeller, rotor, and motor are all crafted from high-quality AISI 304 stainless steel, ensuring long-lasting performance even under demanding conditions. Additionally, the integrated internal thermal protection guarantees safe operation, extending the lifespan of the motor while minimizing maintenance requirements.

Technical Precision and Installation Flexibility

The SQF 1.2-3 boasts impressive technical specifications that meet diverse water supply demands. Its three technical stages and maximum operating pressure of 15 bar deliver powerful and efficient pumping capabilities. The system supports water temperature ranges from 0°C to 40°C, making it suitable for various climates and applications.

Installation is streamlined with features like a standard Rp connection (1 1/4 inch) and a minimum borehole diameter of 76 mm. Whether for residential, agricultural, or industrial use, this pump adapts easily to different setups with optimized functionality. Additional certifications, including UKCA, CE, and EAC approvals, ensure compliance with international standards, promoting peace of mind for global users.

With a net weight of 9.81 kg and shipping volume of just 0.0242 m³, the pump is as convenient to handle as it is efficient. The product’s exceptional MEI (Minimum Efficiency Index) rating further underscores its environmentally conscious design, reducing energy consumption and operational costs.

The Perfect Choice for Renewable Water Solutions

The SQF 1.2-3 SQFlex centrifugal pump combines sustainability, adaptability, and durability to deliver a reliable water supply system. Ideal for renewable energy integration, this pump helps reduce dependence on traditional energy sources while supporting environmental conservation. Its advanced features, robust construction, and wide range of certifications make it a trusted choice for homeowners, businesses, and communities seeking efficient and flexible pumping solutions. Experience performance, reliability, and sustainability with the SQF 1.2-3 SQFlex centrifugal pump.

The 3″ SQFlex pump with helical rotor is for high heads and low flow rates.

The SQFlex system is a reliable water supply system based on renewable energy sources, such as solar and wind energy. Thanks to its flexible energy supply and performance, the SQFlex system can be combined and adapted to meet any need on the installation site.

The SQFlex system has a wide voltage range, built-in maximum power point tracking (MPPT) as well as dry-running, voltage and overload protection.

SQF 3A-10

The 4″ SQF centrifugal pump is for low heads and large flow rates.

The SQFlex system is a reliable water supply system based on renewable energy sources, such as solar and wind energy. Thanks to its flexible energy supply and performance, the SQFlex system can be combined and adapted to meet any need on the installation site.

The SQFlex system has a wide voltage range, built-in maximum power point tracking (MPPT) as well as dry-running, voltage and overload protection.