Troubleshooting B-Series Gear Pump

Trouble          Probable Cause and Remedy
Pump will not turn
  • Drive malfunction: verify that drive powered. Assure all alarm circuits are clear. Check drive motor current and speed settings.
  • Process conditions changed: check process conditions for proper temperature, pressures, viscosities, and materials.
  • Entrained particle: disassemble and clean pump. Replace any damaged parts.
  • Possible internal damage: disassemble and clean pump. Replace any damaged parts. Consult factory.
No flow from pump
  • Same as above: same as above.
  • Pump rotation: correct drive arrangement or power leads.
Excessive seal assembly leakage
  • Worn lip seal: replace lip seals.
  • Worn seal plate: replace seal plate and coupling if necessary.
  • Insufficient inlet pressure: mechanical face seal version - increase inlet pressure.
Reduced pump efficiency
  • Worn gear(s): replace worn gear(s).
  • Worn bearings: replace worn bearings.
  • Process conditions changed: consult factory for gear clearance recommendations for new process conditions.