CM-3

Summary

Product Identification

The Grundfos CM 3 series consists of horizontal, multistage centrifugal pumps, available in 50/60 Hz versions. The CME 3 series is also mentioned, indicating a variant.

Available material variants include:

• CM 3-A / CME 3-A: Cast iron (EN-GJL-200)
• CM 3-I / CME 3-I: EN 1.4301 / AISI 304 stainless steel
• CM 3-G / CME 3-G: EN 1.4401 / AISI 316 stainless steel

Performance Data

Performance curves are provided for CM 3 pumps at both 50 Hz and 60 Hz, illustrating relationships between:

• Flow rate (Q) in m³/h and l/s
• Head (H) in m
• Pressure (p) in kPa
• Power input (P2) in kW
• Net Positive Suction Head (NPSH) in m
• Efficiency (Eta) in %

For exact tabulated values and detailed performance characteristics, please refer to the official PDF.

Electrical

The CM 3 and CME 3 pumps are available with various electrical configurations:

CM 3 Series (50 Hz):

• 3 x 220-240 V / 380-415 V, 50 Hz (supply voltage F)
• 1 x 220-240 V, 50 Hz (supply voltage C)

CM 3 Series (60 Hz and 50/60 Hz):

• 3 x 208-230 V / 440-480 V, 60 Hz (supply voltage E)
• 3 x 575 V, 60 Hz (supply voltage H)
• 3 x 400 V, 50/60 Hz (supply voltage I)
• 3 x 380-415 V, 50 Hz; 3 x 440-480 V, 60 Hz (supply voltage J)
• 3 x 220-240/380-415 V, 50 Hz; 3 x 220-255/380-440 V, 60 Hz (supply voltage O)
• 1 x 115/230 V, 60 Hz (supply voltage B)
• 1 x 220 V, 60 Hz (supply voltage A)
• 3 x 200/346 V, 50 Hz; 3 x 200-220/346-380 V, 60 Hz (supply voltage G)

Note: For supply voltage I, pumps are only suitable for connection to a frequency of 60 Hz until further notice. A dual frequency version was expected in January 2011. CM 3-7, CM 3-8, and CM 3-9 are not available with supply voltage O.

CME 3 Series (60 Hz and 50/60 Hz):

• 1 x 200-240 V, 50/60 Hz (supply voltage K)
• 1 x 208-230 V, 50/60 Hz (supply voltage M)
• 3 x 380-480 V, 50/60 Hz (supply voltage L)
• 3 x 460-480 V, 60 Hz (supply voltage N)

Motor power (P2) in kW is specified for various pump types and supply voltages. See the official PDF for exact tabulated values.

Mechanical / Hydraulic

Connections:

• Inlet/Outlet: Rp 1 or NPT 1
• Auxiliary: Rp 3/8

Detailed dimensions (A1-A4, B1-B3, H, H1, H2, L1-L9) are provided in millimeters for various CM 3 and CME 3 pump types across different frequencies and supply voltages. See the official PDF for exact tabulated values and diagrams.

Weights and Shipping Volume

Net weight [kg], gross weight [kg], and shipping volume [m³] are specified for various CM 3 and CME 3 pump types and supply voltages. See the official PDF for exact tabulated values.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF. For contractual data, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror