Superior protection measures ensure double reliability The motor of any pump is as vital for operation as the pump itself. This is precisely the reason why Grundfos offers a large range of highly efficient and technically advanced motors. Each motor is perfectly adapted to the individual pump design in order to achieve optimal balance between performance, efficiency, and long-time running costs of the pump. The table below provides an overview of the motor variants and designs that Grundfos offers for custom-built pumps. The list should not be regarded as complete. A multitude of special designs and motor features can be made available upon request. If our standard solutions do not meet your needs we can create a customized solution based on your specifications. Please contact your local Grundfos company with full details of your requirements.

^ = Call for information VARIANT DESCRIPTION AVAILABLE FOR MODELS Different motor brand If technically possible, Grundfos can fit the pump with a motor of a brand other than the standard. This will normally increase the time of delivery. Alternatively, the pump can be supplied without a motor. 0 -60 HP Different position of motor Where possible, the terminal box can be placed on either side of the pump. 0 -60 HP Explosion-proof motor For operation in hazardous atmospheres. 1 - 30 HP 4 - Pole motors For areas where a lower noise level is required and applications with poor inlet conditions (low NPSHa) Different enclosure class As standard, Grundfos can supply: TEFC: Totally enclosed fan-cooled On request, we can supply: Chemical processing/mill and chem duty Washdown duty (Up through 10 hp only) ODP: Open drip-proof ^ Anti-condensation heating (space heaters) Built-in heating unit, especially for humid environments. All heating units are supplied with 1 x 115V,60Hz. ^ Integrated variable speed drive All Grundfos CR pumps below 15 HP are available as standard with an integrated variable speed drive (type MLE) motor. ^ Special supply voltage Motors suitable for other voltages are available upon request. ^ Motor insulation class Upgrade from Class F to Class H. ^ Efficiency class EPAct/NRC motor efficiency according to EPAct/NRC standards Premium efficiency ^ Efficiency class 1 motor Motors with efficiency classification 1 (according to CEMEP, Eff 1) are available. ^ Oversized motor Ambient temperatures above 104° F or installation at altitudes of more than 3,300 feet above sea level require the use of an oversized motor (i.e. derating). ^ Tropicalized windings Motors recommended or operating in areas with high humidity. ^ Wye/Delta starting Motor wired or Wye/Delta starting (6 leads). ^ Test sheets Grundfos’ laboratory is authorized to issue test sheets for motors; for instance, for insurance companies. ^