MXH

Summary

Product Identification

Calpeda MXH / MXHL Series (Smaller Models)

• MXH: Horizontal multi-stage close coupled pumps in chrome-nickel stainless steel (1.4301 EN 10088 / AISI 304).
• MXHL: Horizontal multi-stage close coupled pumps in chrome-nickel-molybdenum stainless steel (1.4404 EN 10088 / AISI 316L).
• MXH EI: MXH pumps equipped with an I-MAT frequency converter for variable-speed operation.

Calpeda MXH 20,32,48 Series (Larger Models)

• Horizontal multi-stage close coupled pumps in chrome-nickel stainless steel (1.4301 EN 10088 / AISI 304).
• MXH EI 20,32,48: MXH 20,32,48 pumps equipped with an I-MAT frequency converter for variable-speed operation.

Applications

• For water supply.
• For clean liquids, without abrasives, which are non-aggressive for stainless steel (with suitable seal materials, on request).
• Universal pump, for domestic use, for civil and industrial applications, for garden use and irrigation.

Operating Limits

For MXH / MXHL Series (Smaller Models)

• Liquid temperature: from -15 °C to +110 °C
• Ambient temperature: up to 40 °C
• Maximum permissible pressure in the pump casing: 8 bar
• Continuous duty.

For MXH 20,32,48 Series (Larger Models)

• Liquid temperature: from -15 °C to +110 °C
• Ambient temperature: up to 40 °C
• Maximum permissible pressure in the pump casing: 10 bar
• Continuous duty.

Mechanical / Hydraulic

General Construction (All Models)

• Horizontal multi-stage close coupled pumps.
• Compact and robust construction.
• Single-piece barrel casing, with front suction port above pump axis and radial delivery at top.
• Filling and draining plugs on the middle of the pump, accessible from any side.

Specific Construction Notes

• MXH / MXHL (Smaller Models): Without protruding flange and with single-piece lantern bracket and base.
• MXH 20,32,48 (Larger Models): With compact lantern bracket and motor with feet.

Materials

For MXH Series (Smaller Models) and MXH 20,32,48 Series (Larger Models)

• Pump casing, Stage casing, Impeller, Casing cover, Spacer sleeve: Chrome-nickel steel 1.4301 EN 10088 (AISI 304)
• Wear ring: PTFE
• Plug: Chrome-nickel steel 1.4305 EN 10088 (AISI 303)
• Pump shaft:
  • MXH (smaller models): Chrome-nickel steel 1.4305 EN 10088 (AISI 303)
  • MXH 20,32,48 (larger models): Chrome-nickel steel 1.4401 EN 10088 (AISI 316)
• Mechanical seal with seat: Ceramic alumina, carbon, EPDM (according to ISO 3069 or ISO 3069-KU for larger models)

For MXHL Series (Smaller Models)

• Pump casing, Stage casing, Impeller, Casing cover, Spacer sleeve, Pump shaft, Plug: Cr-Ni-Mo steel 1.4404 EN 10088 (AISI 316L)
• Wear ring: PTFE
• Mechanical seal with seat: Ceramic alumina, carbon, EPDM (according to ISO 3069)

Port Options (MXH 20,32,48 Series Only)

• Standard: Threaded ports
• On request: Victaulic ports (MXH-V), Flanged ports (MXH-F)

Dimensions and Weights

• See the official PDF for exact tabulated values and diagrams.

Electrical

Standard Models (MXH / MXHL / MXH 20,32,48)

• Motor: 2-pole induction motor, 50 Hz.
  • MXH / MXHL (smaller models): n ≈ 2800 rpm
  • MXH 20,32,48 (larger models): n ≈ 2900 rpm
• Three-phase (MXH, MXHL):
  • MXH (smaller models): 230/400 V ± 10% up to 3 kW; 400/690 V ± 10% from 3,7 to 4 kW.
  • MXHL (smaller models): 230/400 V ± 10%.
  • MXH (larger models): 230/400 V ± 10% up to 3 kW; 400/690 V ± 10% from 4 to 7,5 kW.
• Single-phase (MXHM, MXHLM): 230 V ± 10%, with thermal protector. Capacitor inside the terminal box.
• Insulation class: F
• Protection: IP 54
• Frequency converter compatibility: Motor suitable for operation with frequency converter (from 1,1 kW for smaller models; general statement for larger models).
• Efficiency: Classification scheme IE3 for three-phase motors from 0,75 kW.
• Standards: Constructed in accordance with EN 60034-1; EN 60034-30-1; EN 60335-1, EN 60335-2-41.

Frequency Converter Models (MXH EI / MXH EI 20,32,48)

• Equipped with I-MAT installed on board for a compact and efficient variable-speed system.
• Pump includes suitable and factory-programmed transducers.
• Rated motor power output:
  • MXH EI (smaller models): from 0,55 kW up to 4 kW.
  • MXH EI 20,32,48 (larger models): from 1,1 kW up to 7,5 kW.
• Control range: 1750 to 2900 rpm (2-pole).
• Protections:
  • Dry running
  • Operations with closed valve ports
  • System leakages
  • Overcurrent in the motor
  • Overvoltage and undervoltage of the power supply
  • Current unbalances between phases
• Operating modes:
  • Constant pressure mode (with pressure transducer)
  • Proportional pressure mode (with pressure transducer)
  • Constant flow mode (with flow meter)
  • Fixed speed mode (with setting of the speed preferential rotation)
  • Constant temperature mode (with temperature transducer)

Special Features on Request

• Other voltages.
• Frequency 60 Hz (as per 60 Hz data sheet).
• Protection IP 55.
• Special mechanical seal.
• Pump casing seal rings in FPM.
• Higher or lower liquid or ambient temperatures.
• Motor suitable for operation with frequency converter up to 0,75 kW (for smaller MXH/MXHL models).
• Pump with Victaulic ports (MXH-V) (for MXH 20,32,48 models).
• Pump with flanged ports (MXH-F) (for MXH 20,32,48 models).

Disclaimer

This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the official OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror