FEKA FXV 20.11 M-A submersible sludge pump DAB.FEKA FXV

Product detailed description

Submersible sludge pumps are essential components in wastewater management systems found in commercial and industrial facilities. These installations typically involve pumping stations, septic tanks, and drainage systems where the presence of solid matter and fibrous material requires robust equipment. In such environments, the IVAR FEKA FXV 20.11 M-A is designed to operate reliably under continuous load, ensuring efficient transport of sewage and greywater without clogging. The pump is suitable for both fixed installations with lifting mechanisms and portable setups, provided the unit is placed directly at the bottom of the tank. The compact design and dual connection options allow for flexible integration into various system layouts.

Technical parameters

Maximum dry-run time	10 min
Operating range	flow rate up to 59.7 m³/h with a head of up to 18.5 m
Passability	solid particles up to 50 mm or 65 mm depending on model
Connection (flanged and threaded)	2”, DN 50, DN 65
Liquid temperature range	up to +50 °C (+60 °C for short periods), +40 °C for ATEX version
Protection class	IP 68
Motor insulation class	F
Impeller type	Vortex
Code	60191229
Brand	IVAR

The pump’s technical parameters define its suitability for specific applications. A maximum dry-run time of 10 minutes ensures the pump can handle occasional low-level conditions without overheating. The flow rate of 59.7 m³/h and head of 18.5 m determine its capacity in handling high-volume wastewater. The solid passage capability of 50 mm or 65 mm allows the pump to manage typical solids found in commercial wastewater. The operating temperature range up to +50°C (or +60°C for short periods) ensures compatibility with heated or ambient water environments. These parameters guide the designer in selecting the correct model based on hydraulic requirements and environmental conditions.

Installation and connection

When installing the IVAR FEKA FXV 20.11 M-A, the pump should be positioned at the lowest point of the tank to ensure full submersion and prevent air intake. The pump supports both flanged and threaded connections in sizes 2”, DN 50, and DN 65, allowing for compatibility with various pipe systems. During installation, it is crucial to verify the alignment of the inlet and outlet to avoid flow restriction. A common mistake is improper sealing of the flange connection, which can lead to leakage and reduced efficiency. Additionally, the cable entry must be securely sealed to maintain the IP 68 rating and prevent water ingress. The motor shaft made from AISI 304 stainless steel ensures resistance to corrosion, but it should not be exposed to aggressive chemicals without prior verification.

Compatibility and accessories

This model is compatible with standard lifting devices and control systems used in commercial pumping stations. For automatic operation, a float switch can be added separately to enable level-based activation. The pump can also be integrated with remote monitoring systems for real-time performance tracking. When using the ATEX version, the installation must comply with explosion-proof standards, including proper grounding and ventilation. Additional accessories such as extended cables or custom voltage configurations can be ordered upon request to suit specific site requirements. No alternative models are listed for comparison, but the pump’s modular design allows for easy replacement of internal components during servicing.

Technical background for designers

The pump operates on a vortex impeller principle, which creates a swirling flow that allows larger solids to pass through without clogging. The mechanical seal is made of silicon carbide and housed in an oil chamber isolated from the pumped medium, reducing wear and extending service life. The motor insulation class F ensures thermal protection against overheating, while the IP 68 rating guarantees complete waterproofing. The pump is constructed using durable materials such as stainless steel and reinforced plastics, making it suitable for long-term operation in corrosive environments. Designers should consider the pump’s dimensions and weight when planning the lifting mechanism and ensuring safe access for maintenance.

Service and operation

Routine maintenance includes checking the mechanical seal integrity, inspecting the impeller for blockages, and verifying the cable entry for signs of wear. The pump is designed for quick servicing due to its modular construction, allowing access to key components without dismantling the entire unit. Since the maximum dry-run time is 10 minutes, it is important to ensure the pump remains submerged during operation. No specific service intervals are provided in the technical data, but regular visual inspections are recommended to identify potential issues early. In case of frequent dry runs or overheating, the pump should be inspected for mechanical damage or seal failure.

Frequently asked questions

Can the pump handle fibrous materials such as paper or textiles?
Yes, the pump is designed to handle fibrous materials commonly found in domestic or commercial wastewater thanks to its vortex impeller and free passage design.

Is the pump suitable for use in explosive environments?
ATEX-certified versions are available for installation in areas with potential gas or vapour hazards. These models comply with the II2G Ex db IIB T4 GB certification standard.

Can the pump be connected to a float switch for automatic operation?
Yes, the MA version includes a float switch for automatic activation based on liquid level. This feature is particularly useful in septic tanks and lift stations.

What is the maximum temperature of the liquid the pump can handle?
The pump is rated for continuous operation at up to +50°C, with short-term tolerance up to +60°C. The ATEX version has a maximum operating temperature of +40°C.