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Linn - Model NM-NMS -Close Coupled Centrifugal Pumps with Flanged Connections
FromLinn-Pumpen GmbH
Close-coupled centrifugal pumps; electric motor with extended shaft directly connected to the pump up to 30 kW, new bracket construction for standard motors (stub-shaft construction) from 37 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 lanter bracket in cast iron. B-NM(S): version with pump casing and lanter bracket/casing cover in bronze. (the pumps are supplied fully painted). Connections: Flanges according to PN 10, EN 1092-2. Counter-flanges (on request).
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- 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. 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).
- Classification scheme IE2 for three-phase motor from 0,75 kW.
- Constructed in accordance with: EN 60034-1; EN 60034-30.
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.
- Explosion proof construction in accordance with Directive 94/9 EEC (ATEX).
- Higher or lower liquid or ambient temperatures.
- Motor suitable operation with frequency converter (standard feature for NMS).