Troubleshooting Pep-II Gear Pump

Trouble         Probable Cause and Remedy
Pump will not turn
  • Low pump temperature: check thermocouple and control loop for proper setting or operation. Allow sufficient heat-up time.
  • Drive malfunction: verify that drive powered. Assure all alarm circuits are clear. Check drive motor current and speed settings. Check drive couplings.
  • Process conditions changed: check process conditions for proper melt 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.
Excessive seal assembly leakage
  • Worn lip seal: replace lip seals.
  • Incorrect water flow: monitor and adjust water flow to provide correct sealing temperature.
  • Clogged rheoseal channel: disassemble two-piece seal housing and inspect.
Reduced pump efficiency
  • Worn gear(s): replace worn gear(s).
  • Worn bearings: replace worn bearings.
  • Process conditions changed: consult factory for clearance recommendations on new process conditions.