CME-5

Summary

Product identification

The Grundfos CME 5 is a horizontal, multistage centrifugal pump. CME pumps are based on the CM pump range but feature a Grundfos MGE motor with an integrated frequency converter, designed to EN standards. This allows for continuously variable control of motor speed.

Available versions include:

• CME 5-A: Cast iron version (EN-GJL-200)
• CME 5-I: Stainless steel version (EN 1.4301/AISI 304)
• CME 5-G: Stainless steel version (EN 1.4401/AISI 316)

General Description & Features

CME pumps are part of the E-pump family, designed for applications requiring controlled operation where consumption fluctuates, constant pressure, and communication with the pump. Key benefits of frequency-controlled speed adaptation include:

• Energy savings
• Increased comfort
• Control and monitoring of the application and pump performance

A pressure sensor can be connected to the built-in frequency converter.

Performance Overview

The pumps operate at 50/60 Hz. The 100% speed of CME pumps is approximately 3400 min⁻¹.

Performance curves for the CME 5 series indicate a maximum flow rate (Q) up to 7.0 m³/h, a maximum head (H) up to 120 m, and a maximum input power (P₂) up to 3.0 kW. NPSH values are shown up to 10 m.

See the official PDF for detailed performance curves, including head, pressure, power, NPSH, and efficiency (Eta) across various flow rates.

Materials of Construction

The pump materials are identical to those of the CM pump range.

Key Components and Materials:

• Pump material versions: Cast iron (EN-GJL-200), Stainless steel (EN 1.4301/AISI 304), Stainless steel (EN 1.4401/AISI 316)
• Shaft seal, steel parts: Stainless steel (1.4301/AISI 304 or 1.4401/AISI 316)
• Shaft seal, seal faces: Al₂O₃/carbon or SiC
• Pump shaft: Stainless steel (1.4057/AISI 431 for cast iron version; 1.4301/AISI 304 or 1.4401/AISI 316 for stainless steel versions)
• O-rings: EPDM, FKM or FFKM
• Chamber: Stainless steel (1.4301/AISI 304 or 1.4401/AISI 316)
• Plug: Stainless steel (1.4404/AISI 316L)
• Impeller: Stainless steel (1.4301/AISI 304 or 1.4401/AISI 316)
• Spacing pipe: Stainless steel (1.4401/AISI 316)
• Clamp: Stainless steel (STX2000 ~ CrNiMO 22 19 4)
• Sleeve: Stainless steel (1.4301/AISI 304 or 1.4401/AISI 316)
• Nut: Stainless steel A4
• Washer (NORD-LOCK®): Steel (1.4547)
• Motor flange: Cast iron
• Stator housing: Silumin (Alu)
• Fan cover: Composite PBT/PC
• Fan: Composite PA 66 30% GF
• Corrugated spring: Steel
• Terminal box: Composite PC/ASA or silumin (Alu)
• Base plate: Steel, electro-coated (1.0330.3) or Steel, powder-coated, 60 to 120 μ, NCS 7005 (1.0330.3)
• Diverting disc: Silicone fluid (LSR)
• Bearing cover plate: PPS

Electrical Data

CME pumps are equipped with a Grundfos MGE motor incorporating a frequency converter for variable speed control.

Supply Voltages (50/60 Hz):

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

Motor Input Power (P₂):

• CME 5-2, CME 5-3: 1.10 kW
• CME 5-4: 1.50 kW
• CME 5-5: 1.50 kW (NPT version) or 2.20 kW (Rp version)
• CME 5-6: 2.20 kW
• CME 5-7, CME 5-8: 3.0 kW

Control & Communication

CME pumps offer various communication options:

• Central building management system: Allows remote monitoring and adjustment of control modes and setpoint settings.
• Grundfos R100 remote control: An accessory for communicating with the pump via an IR-signal transmitter, enabling monitoring and changes to control modes and settings.
• Control panel: Manual setpoint settings can be adjusted directly on the terminal box control panel.

Communication Interface Units (CIU) are available for network integration:

• CIU 100: LON
• CIU 150: PROFIBUS DP
• CIU 200: Modbus RTU
• CIU 250: GSM
• CIU 270: GRM
• CIU 300: BACnet MS/TP

Mechanical Data

Connections:

• A1, A2, A3, A4 connections are available in Rp (e.g., Rp 1, Rp 1 1/4, Rp 3/8) or NPT (e.g., NPT 1, NPT 1 1/4, Rp 3/8) thread types, depending on the specific model.

Dimensions: Detailed dimensions (A1, A2, A3, A4, B1, B2, B3, H, H1, H2, L1, L2, L3, L4, L5, L6, L7, L8, L9) are provided in the OEM datasheet for each pump type and frame size. See the official PDF for exact tabulated values.

Weights and Shipping Volume:

• Net weight: Ranges from 16.7 kg to 37.5 kg, depending on pump type and material version.
• Gross weight: Ranges from 20.2 kg to 41.0 kg, depending on pump type and material version.
• Shipping volume: Ranges from 0.0296 m³ to 0.0847 m³, depending on pump type and material version.

See the official PDF for exact tabulated values for specific pump models and supply voltages.

---

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