EU regulation

EU regulation 547/2012 Important changes

At the start of 2013, the abovementioned EU regulation came into effect as the implementation of the Ecodesign Directive 125 / 2009. With this regulation, the EU pursues the objective of successively increasing the efficiency of certain products over the next few years. Manufacturers use the minimum efficiency index (MEI) in declaring their products to be “water pumps” that fall within the scope of the regulation. This forms part of the EC Declaration of Conformity for the pumps concerned.

In the first stage, which enters into force on 1 January 2013, the legislative authority requires compliance with a MEI > 0.1. In the second stage, which comes into effect on 1 January 2015, this value increases to > 0.4. The date on which the pump is placed on the market applies.

Furthermore, this regulation provides the information about the efficiency in the optimal duty point of the centrifugal pump. The minimum efficiency index (MEI) is a decimal value which is always > 0. The MEI to be specified refers to the speed 1450 or 2900/min. In addition, the determined MEI of a pump applies to the full impeller diameter for which the pump was developed. In the case of trimmed or corrected impeller diameters for the purposes of attaining certain duty points, the actual MEI deviates towards reduced efficiency, whereby there is a lower energy consumption here than for the pump with a full impeller diameter. Hydraulic efficiency of corrected impellers is indicated in the respective data sheets or brochures.

Pumps from Herborner Pumpentechnik which were developed for pumping “clean” water (e. g. herborner.F), display, as required, the information on the name plate and accordingly provide additional information in the documentation and in the operating manuals.

Supplementary information on the name plate:

  • Minimum efficiency index MEI ≥ [x.xx], e.g. MEI ≥ [0.10]
  • Hydraulic pump efficiency (in %) or the indication [–,-] for corrected/ trimmed impeller diameters

Supplementary information in the corresponding documentation (e. g. operating manual), which was not yet stated in data sheets/ brochures, operating manuals or the name plates of pumps:

1. Standard texts:

  • “The benchmark for most efficient water pumps is MEI ≥ 0,70”, or, alternatively, the indication “Benchmark MEI ≥ 0,70”
  • “The efficiency of a pump with a trimmed impeller is usually lower than that of a pump with the full impeller diameter. The trimming of the impeller will adapt the pump to a fixed duty point, leading to reduced energy consumption. The minimum efficiency index (MEI) is based on the full impeller diameter.”
  • “The operation of this water pump with variable duty points may be more efficient and economic when controlled, for example, by the use of a variable speed drive that matches the pump duty to the system.”
  • “Information on benchmark efficiency is available at []"

2. Information relevant for disassembly, recycling or disposal at end-of- life.

3. Benchmark efficiency graph for MEI = 0.7 and MEI = 0.4 can be found at []"

Pumps excluded from the regulation

Pumps, whose hydraulics were developed for pumping other media such as dirty water, do not receive the previously described information. These include pump hydraulics with deviating designs (e.g. swimming pool water circulation pumps with integrated dirt filter) or pumps with open impellers for possible dirty water pumping. Additionally excluded are special pump designs for low or high-temperature application (< 10 °C or > 120 °C), fire extinguishing pumps, self-priming pumps or also dis- placement pumps.