Submersible spindle pump IBO 3,5" SCR - 0,50

Product detailed description

This submersible spindle pump is commonly used in domestic and utility water supply systems where a high head and moderate flow rate are required. It is particularly suitable for installation in narrow boreholes and is frequently deployed in residential properties, holiday homes, schools and agricultural facilities. The compact dimensions allow for deployment in restricted spaces, while the robust construction ensures long-term reliability in diverse environments. The pump operates on standard single-phase voltage and is connected via a power cable with sufficient length to accommodate typical installation depths.

Its design is tailored for potable and utility water applications, making it ideal for water supply in homes, irrigation systems and outdoor water features. The absence of moving parts exposed to the fluid minimises wear and reduces maintenance requirements. The pump is typically integrated into systems that require stable flow under elevated pressure conditions, such as elevated storage tanks or pressurised water distribution networks. It is also suitable for use in domestic water wells where space constraints limit the use of larger units.

Technical parameters

Installation and connection

The pump is installed directly into the water source, typically a well or borehole. The installation process involves lowering the unit into the water using a support structure or guide pipe to prevent lateral movement. The electrical connection is made via the supplied cable to a dedicated circuit with appropriate protection devices, including a residual current device (RCD) and circuit breaker. The cable length of 15 m provides flexibility in positioning the pump at varying depths.

Before installation, verify that the power supply is compatible with the pump’s rated voltage and that the circuit is properly grounded. Ensure the pump is fully submerged and that the intake is positioned below the lowest water level to prevent air ingress. Common installation errors include insufficient submersion, which can cause cavitation, and incorrect electrical connections, which may damage the motor or pose safety risks. After installation, perform a dry-run test to confirm proper operation and check for leaks or unusual noise.

Compatibility and accessories

The pump is compatible with standard water supply systems and can be integrated into both closed-loop and open-loop configurations. It requires a suitable power supply with a dedicated circuit breaker and RCD for safety. Additional components such as pressure switches, flow meters or control panels may be necessary depending on the application. For systems requiring variable speed control, a frequency converter compatible with single-phase input can be used. Accessories such as filter screens and check valves should be installed at the inlet and outlet to protect the pump and downstream components.

Technical background for designers

The pump operates on the principle of centrifugal force generated by the impeller, which is driven by an electric motor. The spindle design ensures that the impeller and motor are sealed from the surrounding water, reducing the risk of corrosion and mechanical failure. The motor is typically constructed from durable materials such as cast iron or stainless steel, with insulation suitable for continuous operation in wet environments. The pump is designed for integration into water supply systems where a consistent flow rate and high-pressure delivery are required.

Efficiency and service life are influenced by factors such as water quality, temperature and the presence of suspended solids. The compact dimensions allow for installation in restricted spaces, making it ideal for boreholes with limited clearance. The absence of moving parts exposed to the fluid minimises wear and reduces the need for routine maintenance.

Service and operation

Regular inspection of the pump and associated components is recommended to ensure continued performance. Check the electrical connections for signs of wear or corrosion and verify that the circuit protection devices are functioning correctly. Monitor the pump’s operation for unusual noise or vibration, which may indicate mechanical issues. Since the pump is designed as a low-maintenance unit, no specific service intervals are required beyond visual inspections and functional tests.

During operation, ensure that the pump remains fully submerged to prevent overheating and cavitation. Avoid running the pump dry for extended periods, as this can cause irreversible damage to the motor and seals. In the event of a malfunction, disconnect the power supply and inspect the unit for visible damage or blockages. If the issue persists, contact a qualified service technician for further diagnosis and repair.

Frequently asked questions

Can the pump be used in boreholes with irregular shapes?
Yes, the compact dimensions and spindle design allow for installation in boreholes with limited clearance and irregular geometries.

Is the pump suitable for use with non-potable water?
Yes, the pump is designed for both potable and utility water applications, provided the water is free from abrasive particles.

What type of electrical protection is required?
A residual current device (RCD) and a circuit breaker with appropriate rating are recommended for safety and protection against overloads.

Can the pump be controlled with a frequency converter?
Yes, a frequency converter compatible with single-phase input can be used to adjust the pump’s speed and flow rate.