Datasheet summary

E4-6 50Hz Borehole Pumps

PDF datasheet mirror for E4-6 50Hz Borehole Pumps (Caprari Pumps). Verify with OEM before design.

Summary

Product identification

The Caprari E4-6 series consists of 50 Hz electric borehole pumps.

Product codes are structured to identify specific pump and motor configurations:

Electric pump codes (e.g., E4XED 25/31 + MCK 43-8V) indicate the wet end and the coupled submersible motor.
Wet end identification codes (e.g., E4XED 25-4/31-V) specify:
- E4X or E: Series.
- ED, XD, XDB, PD, XPD: Pump type (e.g., Desert, Extra Performance Desert, Intermediate casing construction).
- 25, 20, 40, 60, 52: Identification wet number.
- -4 or -6: Coupling flange motor size (4" or 6").
- /31, /30, /60, /13, /3: Number of stages.
- -V or -W: Unit usage frequency (-V for 50 Hz, -W for 50/60 Hz).
- A: Impeller trimming (if present).
Submersible motor identification codes (e.g., MCK43 -8) specify:
- MC, MAC: Submersible motor.
- K, R: Axial thrust.
- 4 or 6: Nominal diameter in inches.
- 3, 55, 5, 50: Nominal power in CV.
- /3: Generational code (if present).
- A, B: Hi Tech or Hi Tech Desert (if present).
- -8: Constructional features of the electric motor.

Operating limits

Maximum submersion: 150 m.
Maximum operating time with closed outlet (pump submersed): 3 min.
Hydraulic performance characteristics were measured with 400 V powered motors, cold water (15°C), and atmospheric pressure (1 bar).
Performance is guaranteed as conforming to standard UNI/ISO 9906 Grade 3B. For units coupled to MAC 6.../3B 6" motors, characteristics are guaranteed to UNI/ISO 9906 Grade 2B.
Catalogue data refers to liquids with a density of 1 kg/dm³ and kinematic viscosity not more than 1 mm²/s, inclusive of friction losses in the check valves.
Horizontal installation is available upon request if not usually foreseen.

Feed water

The pumps are designed for lifting water that is chemically and mechanically non-aggressive for the components.
Maximum content of solids (with the same hardness and granulometry of silt):
- E4XED - E6XD series: 300 g/m³.
- E4XPD60 - E6XPD52 (Extra Performance series for high solids and sand): 450 g/m³.
Special executions with materials for aggressive water can be supplied upon request.

Electrical

Standard Version (Three-Phase/50 Hz):
- Direct starting: MC/MAC/MPC…-8; 400 V for all power outputs.
- All motors are suitable for inverter operation, but require a filter between the motor and inverter to maintain the voltage gradient.
- MAC6../3A - /3B are high-efficiency submersible motors (standard).
Versions on Request (Three-Phase/50 Hz):
- MPC6../3A: Standard motor.
- MPC6../3K: High efficiency submersible motor.
- MAC6../3C PLUS: Submersible motor specified for high temperature, high solid contents, and optimal for VSD applications.
- Available supply voltages:
  - 4" motors: MC...-6 230 V up to 7.5 kW; MC...-8 400 V up to 7.5 kW.
  - 6" motors: MPC…-8 400 V up to 37 kW; MPC…-9 400/700 V up to 37 kW.
  - MAC...-6 230 V up to 30 kW; MAC...-7 230/400 V up to 45 kW (37 kW for MAC6../3A).
  - MAC...-8 400 V up to 45 kW; MAC...-9 400/700 V up to 45 kW (37 kW for MAC6../3A, 4 - 45 kW for MAC6../3C).
- Motors can be supplied for other voltages and frequencies.
Single-Phase Motors (on request):
- MC..M.-1: 220/230 V up to 4 kW.
- MC..M.-2: 230/240 V up to 4 kW.
Permissible Voltage Variations:
- For 4"; 6" motors: 230 V ± 10%, 400 V ± 10%.
- For single-phase 4" motors: ± 5%.
- For other voltages and frequencies (4"-6" motors): ± 5%.
Tolerances: On operating data, according to International Standards IEC 34-1.
Thermal Probes: Available on request, with the same length as the power cables.

Mechanical / hydraulic

Pump Construction Materials:
- E4XED, E4XPD Series:
  - Stainless steel: Valve body, Casing, Shaft, Box coupling, Cable guard, Suction cover, Strainer, Sand guard, Bolts and nuts.
  - Aluminium oxide: Shaft sleeve.
  - Technopolymer: Impeller, Diffuser, Conical valve.
  - Stainless steel/rubber: Intermediate plate.
- E6XD, E6XPD Series:
  - Stainless steel: Valve casing, Conical valve, Pump shaft, Shaft sleeve, Stage casing, Cable guard, Coupling, Suction casing, Strainer, Bolts and nuts.
  - Rubber: Shaft bearing bush.
  - Technopolymer: Impeller, Diffuser.
- E6XDB, E6XPDB Series:
  - Stainless steel: Valve casing, Conical valve, Pump shaft, Shaft sleeve, Stage casing, Intermediate bearing, Cable guard, Coupling, Suction cover, Strainer, Bolts and nuts.
  - Rubber: Shaft bearing bush.
  - Technopolymer: Impeller, Diffuser.
Motor Construction Materials:
- MC4, MCH4, MCK4, MCR4 Series:
  - Stainless steel: Shaft, Stator shell, Diaphragm cover (MC..405-41).
  - Rubber: Sand guard, Diaphragm.
  - Cast iron: Upper bracket.
  - Silicon carbide/ceramic or Ceramic/graphite: Mechanical seal.
  - Steel: Upper ball bearing, Lower ball bearing.
  - Electrical steel: Rotor, Stator.
  - Copper: Winding.
  - Aluminium: Lower bracket.
  - Technopolymer: Diaphragm cover (MC..415-410).
  - Stainless steel: Bolts and nuts.
- MPC6/3A Series:
  - Stainless steel: Shaft, Stator shell, Thrust-bearing (part).
  - Rubber: Sand guard, Diaphragm.
  - Electrical steel: Rotor, Stator.
  - PPC: Winding.
  - Cast iron: Lower bracket, Thrust-bearing foot slip, Diaphragm cover, Upper bracket.
  - Technopolymer: Mechanical seal cover.
  - Silicon carbide/silicon carbide: Mechanical seal.
  - Graphite: Bearing.
  - Synthetic compound: Thrust-bearing (part).
  - Steel: Shaft sleeve.
  - Stainless steel: Bolts and nuts.
- MAC6/3A Series:
  - Stainless steel: Shaft, Stator shell, Thrust-bearing (part).
  - Rubber: Sand guard, Diaphragm.
  - Electrical steel: Rotor, Stator.
  - Green wire/PPC: Winding.
  - Cast iron: Lower bracket, Thrust-bearing foot slip, Upper bracket.
  - Silicon carbide/silicon carbide: Mechanical seal.
  - Graphite: Bearing.
  - Brass/Synthetic compound: Thrust-bearing (part).
  - Technopolymer: Diaphragm cover.
  - Stainless steel: Bolts and nuts.
- MAC6/3B Series:
  - Stainless steel: Shaft, Stator shell, Thrust-bearing (part).
  - Rubber: Sand guard, Diaphragm.
  - Cast iron: Upper cover, Lower bracket, Thrust-bearing foot slip, Diaphragm cover, Upper bracket.
  - Electrical steel: Rotor, Stator.
  - Green wire: Winding.
  - Silicon carbide/silicon carbide: Mechanical seal.
  - Graphite: Bearing.
  - Brass/Synthetic compound: Thrust-bearing (part).
  - Stainless steel: Bolts and nuts.
Maximum Liquid Temperature:
- MC4.. motors: 30°C.
- MPC6 motors: 40°C (5.5 - 20 CV), 35°C (25 - 40 CV), 30°C (50 CV).
- MAC6...A motors: 40°C (5.5 - 20 CV), 35°C (25 - 40 CV), 30°C (50 CV).
- MAC6...B motors: 45°C (5.5 - 20 CV), 40°C (25 - 40 CV), 35°C (50 - 60 CV).
Minimum Water Speed Outside Motor Jacket:
- For 4" motors: > 0.08 m/s.
- For MPC6 motors: > 0.5 m/s.
- For MAC...A (5-40 CV) motors: > 0.5 m/s.
- For MAC...B (50-60 CV) motors: > 0.5 m/s.
Hydraulic Performance Curves: Graphs illustrating performance ranges for 4" and 6" pumps are provided. See the official PDF for exact curves.
Operating Data, Dimensions, and Weights: Detailed tables are provided for various E4XED models (E4XED15, E4XED20, E4XED25, E4XED30, E4XED35). These tables include:
- Electric pump type and motor power (kW, HP).
- Check valve Ø (e.g., 1 1/4" Gas).
- Capacity (l/s, l/min, m³/h) and Head (m).
- NPSH (m).
- Overall dimensions (A, B, C, D, E, F in mm) and maximum diameter (Ø max in mm).
- Weight (kg).
- Available with NPT thread.
- See the official PDF for exact tabulated values.

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 for the project.

Official datasheet (PDF)

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Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.