Troubleshooting / Progressive cavity pump

Progressive cavity pump Troubleshooting

The most common progressive cavity pump problems on the plant floor, with the likely causes and the fix for each. Part of the OEE Lab directory of 301+ documented problems.

Not your exact symptom?

Describe it to the AI troubleshoot assistant and search all 301 documented problems.

Open the AI assistant

Problems on this page:

Low or no flowStator or rotor wearRun-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
The directory stays free.

Related tools: full troubleshooting directory · OEE calculator · downtime cost · MTBF / MTTR · glossary

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