MXS

Summary

Product identification

The MXS series consists of Multi-Stage Submersible Clean Water Pumps, constructed entirely from stainless steel. These are 5-inch close-coupled multi-stage submersible pumps.

Models include:

• MXS: Three-phase variants.
• MXSM: Single-phase variants with a built-in capacitor, accessible through the delivery casing.
• MXSM.. CG: Single-phase variants with a float switch (on demand), rated up to 10 A.

Applications

These pumps are suitable for:

• Water supply from wells, tanks, or reservoirs.
• Domestic, civil, and industrial applications.
• Garden use, irrigation, and rainwater harvesting systems.

Operating limits

• Water temperature: up to 35 °C
• Minimum internal diameter of well: 140 mm
• Minimum immersion depth: 100 mm
• Maximum immersion depth: 20 m (with suitable cable length)
• Duty: Continuous
• Solids handling: Suction strainer prevents entrance of solids with diameter bigger than 2 mm.

Electrical

The pumps feature a 2-pole induction motor, 50 Hz (n ≈ 2900 1/min).

MXS (three-phase models):

• Voltage: 230 V ± 10% or 400 V ± 10%
• Cable: H07RN8-F, length 15 m, without plug.

MXSM (single-phase models):

• Voltage: 230 V ± 10%, with thermal protector.
• Capacitor: Incorporated.
• Cable: H07RN8-F, length 15 m, with plug CEI-UNEL 47166.

General Electrical Specifications:

• Insulation class: F
• Protection: IP X8 (for continuous immersion)
• Winding: Triple impregnation humidity-proof dry winding.
• Compliance: Constructed in accordance with EN 60335-2-41.

Special features on request:

• Other voltages.
• Frequency 60 Hz (as per 60 Hz data sheet).
• Cable length 20 m.
• Motor suitable for operation with frequency converter.

Mechanical / hydraulic

Construction:

• Hydraulics are located below the motor, with the motor cooled by the pumped fluid.
• Safe operation is possible with the motor only partially submerged.
• Double shaft seal with oil chamber.
• The suction strainer prevents the entrance of solids with a diameter bigger than 2 mm.

Materials:

• Delivery casing, External jacket, Suction strainer, Stage casing, Spacer sleeve, Impeller, Motor jacket, Jacket cover, Oil chamber cover, Shaft: Chrome-nickel steel 1.4301 EN 10088 (AISI 304).
• Upper mechanical seal: Steatite, carbon, NBR.
• Lower mechanical seal: Ceramic alumina, silicon carbide, NBR.
• Seal lubrication oil: Oil for food machinery and pharmaceutic use.

Dimensions and weights:

• Pump diameter: Ø 133
• Discharge connection: G 1 1/4 (ISO 228)
• Weights are provided for models with a 15 m cable length.
• See the official PDF for exact tabulated values for specific models (length, weight, cable type).

Performance

Performance charts (coverage and characteristic curves) are provided for n ≈ 2900 rpm. Detailed performance tables for MXS 3xx, MXS 5xx, and MXS 9xx series, including P1 (Max. power input), P2 (Rated motor power output), current (A), and capacitor (μF) values, are available in the official PDF. These tables list head (H m) at various flow rates (Q m³/h, l/min). See the official PDF for exact tabulated values.

Features

• Low cost installation: Immersed, without suction pipe and valves. The cylindrical suction strainer provides support for installation on a flat surface or tank bottom, allowing operation with 100 mm minimum water level.
• Greater Safety: Double shaft sealing with an oil chamber separates the motor from the water, providing protection against accidental dry operation.
• Low-Noise operation: The design of hydraulic parts, the water-filled shroud around the motor, and submerged operation ensure low noise.
• Reliable: Ball bearings and shaft are sized to reduce stresses, guaranteeing high reliability.
• Flexible: Allows inspection of the capacitor without disassembling the pump, through the delivery casing.
• Robust: Stainless steel construction allows the pump to be suspended from the delivery pipe.
• Totally in stainless steel: All parts in contact with the pumped liquid, both internal and external, are in stainless steel AISI 304, without plastic materials and components.

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Disclaimer: This summary is based on extracted text and may miss figures, footnotes, or recent revisions present in the full OEM PDF datasheet. Contractual data must always match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

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