MATERIALS HANDLING
The Lewa ecodos
mechanically activated diaphragm pump
PROGRESS INPUMPS
precisely controlled in terms of fl ow rate and dosing time, but also convey the ingredients particularly gently. To enable the proven pump units of the ecodos series from Lewa to fulfi l this demanding task with even more fl exibility and energy effi ciency in the future, the manufacturer is expanding the portfolio to include a new form of wide-range speed control. Alongside asynchronous motors and servomotors, permanent magnet synchronous motors, or PMSMs for short,
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n many applications – metering ingredients in the pharmaceutical or food industry, for example – pumps are required that can not only be
Compact permanent magnet synchronous motor extends control range and reduces total cost of ownership
are also used now. T ey are characterised by high energy effi ciency and a control range greater than 1:200. T is signifi cantly expands the range of applications. With PMSMs, it is no longer necessary to use several pumps for diff erent fl ow rates or oversize asynchronous motors for low speeds. Since PMSMs can be designed without a fan, they remain compact and easy to clean. T e latter feature predestines
them for hygienic applications. High effi ciency rating over the complete control range in accordance with energy effi ciency class IE5+ also reduces energy costs, thus ensuring a lower total cost of ownership (TCO). T e diaphragm metering pumps in the ecodos series are particularly well suited for applications in the food or pharmaceutical industries. All materials in contact with the fl uids used in the pump units meet the FDA and USP Class VI requirements, and the EU directives for the food industry. In the hygienic version, for example, the pump head is made of PP or electropolished stainless steel with a
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