CME-1

Summary

Product identification

The Grundfos CME 1 is a horizontal, multistage centrifugal pump. CME pumps are built upon the CM pump range, distinguished by their integrated Grundfos MGE motor. This motor is designed to EN standards and incorporates a frequency converter. CME pumps are part of the "E-pump family" and are suitable for 50/60 Hz operation.

CME pumps are recommended when the application requires:

• Controlled operation with fluctuating consumption
• Constant pressure
• Communication with the pump

Benefits of frequency-controlled speed adaptation include energy savings, increased comfort, and enhanced control and monitoring of the application and pump performance.

Operating limits

The 100% speed of CME pumps is approximately 3400 min⁻¹, irrespective of the input frequency.

For detailed performance curves showing head (H) in meters, flow rate (Q) in m³/h or l/s, pressure (p) in kPa, power (P₂) in kW, NPSH in meters, and efficiency (Eta) in %, please refer to the official PDF. The performance range for the CME 1 series shows maximum head values up to approximately 120 m and maximum flow rates up to approximately 2.8 m³/h.

Electrical

CME pumps feature a built-in frequency converter that enables continuously variable control of the motor speed, allowing the pump to operate at any duty point. A pressure sensor can be connected to the frequency converter.

Supply Voltage Options:

• CME 1-A (Cast iron version):
  • 1 x 200-240 V, 50/60 Hz (supply voltage K)
  • 1 x 208-230 V, 50/60 Hz (supply voltage M)
• CME 1-I and CME 1-G (Stainless steel versions):
  • 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)

Specific P₂ [kW] values for each pump type are available in the dimension tables within the official PDF.

Mechanical / hydraulic

Construction Materials:

CME pumps are available in cast iron and stainless steel versions.

• Pump Material Versions:

  • Cast iron (EN-GJL-200)
  • Stainless steel (EN 1.4301/AISI 304)
  • Stainless steel (EN 1.4401/AISI 316)

• Key Pump Parts Materials:

  • Chamber: Stainless steel (EN 1.4301/AISI 304, EN 1.4401/AISI 316)
  • Plug: Stainless steel (EN 1.4404/AISI 316L)
  • Impeller: Stainless steel (EN 1.4301/AISI 304, EN 1.4401/AISI 316). Note: Some specific models (CM(E) 1-9 to 1-14, CM(E) 3-9 to 3-14, CM(E) 5-9 to 5-13, CM(E) 10-6 to 10-8) are fitted with impellers made of stainless steel EN 1.4401 as standard.
  • Pump shaft: Stainless steel (EN 1.4057/AISI 431, EN 1.4301/AISI 304, EN 1.4401/AISI 316)
  • Shaft seal, steel parts: Stainless steel (EN 1.4301/AISI 304, EN 1.4401/AISI 316)
  • Shaft seal, seal faces: Al₂O₃/carbon or SiC
  • O-rings: EPDM, FKM or FFKM
  • Spacing pipe: Stainless steel (EN 1.4401/AISI 316)
  • Clamp: Stainless steel (STX2000 ~ CrNiMO 22 19 4)
  • Sleeve: Stainless steel (EN 1.4301/AISI 304, EN 1.4401/AISI 316)
  • Nut: Stainless steel A4
  • Washer (NORD-LOCK®): Steel (EN 1.4547)
  • Discharge part, Inlet part, Flange (Cast iron version): Cast iron (EN-GJL-200)

Dimensions, Weights, and Shipping Volume:

Detailed dimensions (A1-A4, B1-B3, H, H1, H2, L1-L9 in mm) are provided in tables for CME 1-A, CME 1-I, and CME 1-G pump types based on frame size and P₂ [kW].

Net weights, gross weights, and shipping volumes [m³] are also tabulated for various CME 1 pump types and supply voltages.

For exact tabulated values for dimensions, weights, and shipping volumes, please refer to the official PDF.

Control and Communication

CME pumps offer communication capabilities via:

• A central building management system, allowing remote monitoring and adjustment of control modes and setpoint settings.
• A Grundfos R100 remote control (accessory), which uses an IR-signal to communicate with the pump's control panel.
• A control panel on the CME pump terminal box for manual setpoint adjustments.

Communication with CME pumps can be integrated into various networks using Grundfos CIU units, supporting protocols such as LON, PROFIBUS DP, Modbus RTU, GSM, GRM, and BACnet MS/TP.

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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 complete OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror