NM, NMD - Calpeda - #1

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Coverage chart n Å 2900 rpm 7 Close Coupled Centrifugal Pumps NM, NMD with threaded ports Construction 1 Close-coupled, centrifugal pumps; electric motor with extended shaft directly connected to the pump. NM: single-impeller NMD:with two back-to-back impellers (with axial thrust balancing). Connections: threaded ports ISO!228/1 (BS 2779). NM, NMD: version with pump casing and lanter bracket in cast iron. B-NM, B-NMD: version with pump casing and lanter bracket in bronze. (the pumps are supplied fully painted). 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 pumps NMD 25/190; NMD 32/210; NMD 40/180). Continuous duty. Motor 2-pole induction motor, 50 Hz (n = 2900 rpm). NM, NMD: three-phase 230/400 V ± 10% up to 3 kW; 400/690 V ± 10% from 4 to 9,2 kW; NMM, NMDM:single-phase 230 V ± 10%, with thermal protector. Insulation class F. Protection IP 54. Constructed in accordance with EN 60034-1. EN 60035-1, EN 60035-2-41. Special features on request - Other voltages. - Frequency 60 Hz (as per 60 Hz data sheet). - Protection IP!55. - Special mechanical seal - Higher or lower liquid or ambient temperatures. Materials Components NM, NMD B-NM, B-NMD Pump casing Cast iron Bronze Lantern bracket GJL 200 EN 1561 G-Cu Sn 10 EN 1982 Impeller Brass P- Cu Zn 40 Pb 2 UNI 5705 NM 17 Cast iron Bronze GJL 200 EN 1561 G-Cu Sn 10 EN 1982 Shaft Cr steel AISI 430 Cr Ni Mo steel Cr Ni steel AISI 303 AISI 316 1,1 -1,5 - 2,2 kW Mechanical seal Carbon - Ceramic - NBR 1 3 Q H 2 3 4 5 6 7 8 9 10 20 30 40 50 100 4 5 10 20 30 40 NM 1 NM 2 NM 11 NM 10 NM 17 NM 12 NM 3 NM 20/160 NM 25/12 NM 25/160 NM 25/20 NMD 20/110 NMD 20/140 NMD 25/190 NMD 32/210 NMD 40/180 50 100 130 m /h l/min 30 40 50 100 150 200 300 400 500 1000 1500 72.820.C 4 5 10 20 30 m 40 50 100 200 300 5 U.S. g.p.m. Imp. g.p.m. 10 20 30 40 50 100 200 300 400 40 50 ft H 100 200 300 400 20 30 10/2010