Application
MultiStream and MultiFree pumps are designed for handling effluent or sewage in municipal and industrial settings, as well as for surface water drainage. They can also be used as portable units in emergencies. UAK pumps handle sewage water, while UFK pumps are explosion-proof for hazardous locations.

Specifications
These pumps are vertical, single-stage, submersible with horizontal discharge, featuring a single-channel or vortex impeller. They include silicon carbide mechanical seals, grease-packed ball bearings, and are safe to run dry. The motor is submersible with an IP68 enclosure and protected by winding thermostats.

Materials
The pump, motor case, and impeller are made of GG grey cast iron, with a corrosion-protected shaft and a flexible rubber-sheathed cable.

Installation
Pumps are installed vertically using a guide rail system or pump base, with flange coupling according to DIN standards.

Performance and Technical Data
Performance varies by model, with flow rates and head heights detailed in Q-H diagrams. The pumps operate under ISO 9906 tolerances, with a minimum flow rate of 0.7 m/s in the pressure pipe. Technical data includes voltage, motor rating, current, RPM, and weight for various models.

Operation
UAK/UFK motors can operate continuously when submerged (S1) or intermittently when not submerged (S3). They are suitable for effluent containing fibrous matter, solids, abrasive materials, trapped air or gas, mixed water, raw effluent, raw sludge, surface water, and rainwater.

Scope of Supply
Pumps are supplied according to EN 12050 with a 10 m cable, without a plug or pump base, available as UAK or UFK models.

Specifications and Components
The document details specifications for various sewage pump models, including type, code numbers, and control unit requirements. It emphasizes the need for a control unit with direct start for certain models, especially UAK/UFK 55/ series.

Control Units
Control units are categorized into MultiFree sewage pumps without ex-proof and with ex-proof, available as single or duplex units, with specific code numbers for each configuration.

Technical Data
The document includes a table detailing nominal diameters, hole centre line diameters, number of bolts, and bolt sizes for PN 6 and PN 10 connections, ensuring compatibility with various installation scenarios.