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QX10-72-7.5S: Top of the QX Range, With a Troubleshooting Checklist — QDX Small Submersible Pumps
QDX Small Submersible Pumps

QX10-72-7.5S: Top of the QX Range, With a Troubleshooting Checklist

Model: QX10-72-7.5S

QX10-72-7.5S is the largest QX pump: 10 m³/h at 72 m on 7.5 kW, 380 V, 50 mm outlet. Plus a checklist for common faults.

Specifications
Flow Rate10m³/h
Head72m
Power7.5kW
Inlet / Outlet Diameter50mm
MaterialStainless steel 304 / 316
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Product Overview

QX10-72-7.5S is the top of the QX series: 10 m³/h at 72 m head from a 7.5 kW, 380 V motor, through a 50 mm outlet. It keeps the same stainless steel construction as the smallest model, just with much more lift.

If something is not right

Symptom Check first
Pump runs but little or no water Total head higher than expected, closed or blocked valve, clogged strainer, wrong rotation on three-phase
Motor stops and restarts later Thermal protector tripping: low or unbalanced voltage, pump running dry or far from its rated point
Flow drops over time Wear from grit in the water (solids must stay at 0.2 mm or less), partly blocked strainer or pipe
Water near the motor or cable entry Mechanical seal or O-ring worn; stop the pump and contact us for seal parts

On three-phase pumps, swapping any two supply wires reverses the rotation. A pump turning the wrong way still pushes some water, which is why it is easy to miss.

Seals and spare parts ship in 2 working days, and the pump carries a 12-month warranty.

Typical Applications

  • high-lift water transfer
  • water supply at height
  • long pipelines
  • process water

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