Pump Calpeda NM 50/20S/C

Pump Calpeda NM 50/20S/C use for :

• Clean liquids without abrasives, which are non-aggressive for the pump materials ( solids content up to 0,2 % ).
• Water supply.
• Heating, air conditioning, cooling and circulation plants.
• Civil and industrial applications.
• Fire fighting applications. For Irrigation.

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.

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 65/12,16,20,25; 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 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 constructed ).
• 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.

Materials

Components	NM, NMS	B-NM, B-NMS
Pump casing Lantern bracket NM Casing cover for NMS	Cast Iron GJL 200 EN 1561	Bronze G-Cu Sn 10 EN 1982
Lantern bracket NMS	Cast Iron GJL 200 EN 1561
Impeller	Cast Iron GJL 200 EN 1561	Bronze G-Cu Sn 10 EN 1982
Brass P-Cu Zn 40 Pb 2 UNI 5705 For 32/12, 32/16, 32/20, 32L/20, 40/20
Shaft	Cr-Ni steel AISI 303 AISI 430 from 3 kW to 22 kW	Cr Ni Mo steel AISI 316
Mechanical seal	Carbon-Ceramic-NBR
Counter-flanges	Steel Fe 4308 UNI 7070

Specifications

• Rated motor power output : 15 kW, 20 Hp
• Maximum suction lift 1-2 m.
• Kapasitas Pompa ( Q ) : Total Head ( H )
  24 M³ ( 400 l/min ) : 60 m
  27 M³ ( 450 l/min ) : 60 m
  30 M³ ( 500 l/min ) : 59.5 m
  33 M³ ( 550 l/min ) : 59.5 m
  37.8 M³ ( 630 l/min ) : 58.5 m
  42 M³ ( 650 l/min ) : 57.5 m
  48 M³ ( 700 l/Min ) : 55.5 m
  54 M³ ( 900 l/Min ) : 53.5 m
  60 M³ ( 1000 l/Min ) : 50.5 m
  66 M³ ( 1100 l/Min ) : 47  m
  69 M³ ( 1150 l/Min ) : 45  m
  72 M³ ( 1200 l/Min ) : 43 m
  75 M³ ( 1250 l/Min ) : 40.5 m
  78 M³ ( 1300 l/Min ) : 37 m
• Weight : 154 kg