1.The progressive cavity pump suffers from stator dry-running wear due to lack of medium， Insufficient or interrupted medium supply
Lack of conveyed fluid (empty suction tank, blocked inlet pipeline) eliminates lubrication and cooling between stator and rotor. How to determine if the stator has suffered from dry burning and wear? The inner wall of the rubber shows cracked blocks, just like the carbon blocks after burning. The surface of the rotor turns black.as following picture shows
2. Faulty auxiliary system
Malfunction of pressure sensors/flow switches fails to trigger emergency shutdown timely.
3. Improper startup & operation
Starting without priming or prolonged idle running during maintenance/debugging.
4. Human operational error
Neglecting medium level & parameter monitoring leads to extended dry running.
For more information, please contact us E-mail:celia@kynspump.com WhatsApp:+86 153 1226 1613
