ConstructionClose-coupled centrifugal pumps; electric motor with extendedshaft directly connected to the pump up to 22 kW, new bracketconstruction for standard motors (stub-shaft construction) from 30to 75 kW with integrated thrust bearing.Pump casing with axial suction and radial delivery on top, maindimensions and performance according to EN 733.NM(S): version with pump casing and lantern bracket in cast iron.B-NM(S): version with pump casing and lantern bracket/casingcover in bronze. (the pumps are supplied fully painted).Connections: Flanges according to PN 10, EN 1092-2.Counter-flanges (on request)Sizes Flangesfrom NM 32/.. to NM 50/… Screwed flanges EN 1092-1, PN 16from NM 65/.. to NMS 100/… Flanges for welding EN 1092-1, PN 10-16Version with frequency converter (on request)ApplicationsFor clean liquids without abrasives, which are non-aggressive forthe pump materials (solids content up to 0,2%). For water supply.For heating, air conditioning, cooling and circulation plants.For civil and industrial applications. For irrigation.Operating conditionsLiquid temperature from -10 °C to 90 °C.Ambient temperature up to 40° C.Total suction lift up to 7 m.Maximum permissible working pressure up to 10 bar (16 bar forNM 32L/16,20; NM 40/16,20; NM 50/12,16; NM 65/12,16,20,25; NM80/16,20,25; NM 100/20).Continuous duty.Motor2-pole induction motor, 50 Hz (n ≈ 2900 rpm).NM, NMS: three-phase 230/400 V ± 10% up to 3 kW;400/690 V ± 10% from 4 to 75 kW.Insulation class F. Protection IP 54 (IP 55 for NMS).Motor suitable for operation with frequency converter from 1,1 kW.IE3 efficiency class for three-phase motors (IE2 up to 0,65 kW).Constructed in accordance with: EN 60034-1; EN 60034-30-1.Special features on request– Other voltages. – Frequency 60 Hz (as per 60 Hz data sheet).– Protection IP 55.- Special mechanical seal.– Packed gland (only for NM standard construction).– Single-phase motor (NMM) up to 1,8 kW.– Higher or lower liquid or ambient temperatures.– Motor suitable for operation with frequency converter up to 0,75 kW.
