Close-coupled centrifugal pumps; electric motor with extended shaft directly connected to the pump up to 22 kW, new bracket construction for standard motors ( stub-shaft construction ) from 30 to 75 kW with integrated thrust bearing.
Pump casing with axial suction and radial delivery on top, main dimensions 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/casing cover in bronze. ( the pumps are supplied fully painted ).
Connections : Flanges according to PN 10, EN 1092-2
Counter-flanges ( on request ) : Screwed flanges EN 1092-1, PN 16
Applications
For clean liquids without abrasives, which are non-aggressive for the 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 fire fighting applications. For irrigation.
Operating conditions
- Liquid 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 for NM 32L/16,20; NM 40/16,20; NM 50/12,16; NM 65/12,16,2,25; NM 80/16; NM 100/20 ).
- Continuous duty.
Motor
- 2-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.
- Classification scheme IE3 for three-phase motors from 0,75 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 1,5 kW.
- Higher or lower liquid or ambient temperatures.
- Motor suitable for operation with frequency converter up to 0,75 kW.
