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Flexible self-cooled submersible pumps prove easy to service

The Hidrostal Group has introduced the Small Tuma motor line, which is characterised by its submersible and self-cooled design and is particularly easy to service.

The new pumps from Hidrostal comply with efficiency class IE3 and offer a robust design and high reliability for demanding applications. Thanks to Hidrostal’s modular system, the pumps can be combined with various hydraulic configurations of the unique screw centrifugal impeller.

Innovative features in the Small Tuma motors include forced cooling integrated into the outer casing with highly efficient cooling circuit impellers and patented mechanical seals.

The motors achieve efficiency class IE3, meeting the highest efficiency standards in the industry without relying on rare earth metals in their production.

The motors, which have been named after Lake Tuma, the source of the Rhine, are suited to a wide range of applications, both for dry and flooded installations. Their watertight design (to protection class IP68) allows continuous operation under demanding conditions. While flexible options for speeds, line voltages, insulation classes and construction materials, including a duplex stainless-steel version for use in aggressive media such as seawater, add to the Small Tuma motor line’s versatility.

A fully cast outer shell and a patented cooling system enable reliable operation even under the most difficult conditions. Its durability and reliability are supported by components such as ball bearings with a service life of at least 50,000 hours, and mechanical seals, both of which ensure maximum quality. A comprehensive sensor system monitors the bearing condition as well as the mechanical seals and enables connection to Industry 4.0 systems – such as HidroSmart, an intelligent platform for monitoring and controlling pump systems that evaluates data in real time and enables early fault detection – ensuring maximum operational reliability. Bimetallic switches, PTC sensors and optional PT100 sensors protect the windings from overheating, and the motors are certified according to IECEx, ATEX, FM and FMc (in the certification process) for use in potentially explosive atmospheres.

Easy service and flexible installation

Ease of servicing was a key objective in the development of the Small Tuma motor range. The motors have plug-in connection cables that can be left on site for servicing. All components are designed so that they can be replaced with a minimum of tools, and the smooth surface of the motors facilitates cleaning and maintenance. For maximum flexibility, the motors can be installed both vertically and horizontally and can be supplemented with certified suspensions or maintenance-friendly base plates.

www.hidrostal.com

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