Progressive cavity pump Troubleshooting: Causes & Fixes

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Problems on this page:

Low or no flow Stator or rotor wear Run-dry damage or seal failure

Low or no flow

Hits OEE: Performance

Symptoms: Reduced or no delivery, pressure low, process starved.

Stator/rotor wear

Measure performance; replace the stator/rotor.

Air lock or starved suction

Ensure flooded suction; bleed air; check feed.

Wrong direction or speed

Verify rotation and speed for the duty.

Prevention: Wear monitoring, flooded suction, correct setup.

Stator or rotor wear

Hits OEE: Quality

Symptoms: Falling flow at the same speed, more slip, higher energy.

Abrasive product

Use correct stator material; manage solids/abrasion.

Run-dry heat damage

Prevent dry running; fit protection.

Over-pressure

Operate within pressure rating; check downstream.

Prevention: Material selection, dry-run protection, pressure control.

Run-dry damage or seal failure

Hits OEE: Availability

Symptoms: Burnt stator smell, seal leak, sudden failure.

Dry running

Fit dry-run/temperature protection; ensure feed.

Mechanical seal or packing wear

Service the seal/packing; check flush.

Misalignment or coupling wear

Align the drive; inspect the coupling and joints.

Prevention: Dry-run protection, seal upkeep, alignment.

Progressive cavity pump troubleshooting FAQ

Progressive cavity pump: what causes low or no flow, and how do I fix it?

Symptoms: Reduced or no delivery, pressure low, process starved. Likely causes: Stator/rotor wear; Air lock or starved suction; Wrong direction or speed. Fixes: Measure performance; replace the stator/rotor. Ensure flooded suction; bleed air; check feed. Verify rotation and speed for the duty. Prevention: Wear monitoring, flooded suction, correct setup.

Progressive cavity pump: what causes stator or rotor wear, and how do I fix it?

Symptoms: Falling flow at the same speed, more slip, higher energy. Likely causes: Abrasive product; Run-dry heat damage; Over-pressure. Fixes: Use correct stator material; manage solids/abrasion. Prevent dry running; fit protection. Operate within pressure rating; check downstream. Prevention: Material selection, dry-run protection, pressure control.

Progressive cavity pump: what causes run-dry damage or seal failure, and how do I fix it?

Symptoms: Burnt stator smell, seal leak, sudden failure. Likely causes: Dry running; Mechanical seal or packing wear; Misalignment or coupling wear. Fixes: Fit dry-run/temperature protection; ensure feed. Service the seal/packing; check flush. Align the drive; inspect the coupling and joints. Prevention: Dry-run protection, seal upkeep, alignment.

Guidance only. Always follow lockout/tagout and your site's safe-work procedures, and verify against OEM manuals before acting.

Stop the same fault coming back

Recurring progressive cavity pump stops usually trace to a cause you cannot see by hand. The partner we recommend is Fabrico: EU-built, so your production data stays in EU jurisdiction, with computer-vision true-cause of micro-stops, a closed loop from PLC-read OEE to an auto-routed work order, and ISO 27001 / 20000-1 / 9001 (supports audit-readiness).

See how Fabrico finds root cause

OEE Lab is built and operated by Fabrico. The directory stays free.

Methods that cut recurring stops: the six big losses · root cause analysis · preventive vs predictive maintenance · TPM · SMED & changeover