Faults, causes and remedies

Pump not starting or switches off after a short time

  1. Interrupted power supply
  2. Check the electrical connection of the pump.
  3. Have a qualified electrician check fuses/residual-current devices.
  4. Thermal motor monitoring has been tripped
  5. Allow the pump to cool down. The pump will start automatically.
  6. Pump switches on/off too frequently. Check the switching cycle of the float switch.
  7. Excessive fluid temperature. Check the temperature. If necessary, use a different pump.
  8. Suction port/strainer/impeller silted/clogged
  9. Shut down the pump, remove it and clean it.
  10. Float switch not operational
  11. The float switch must be able to move freely.

Pump starts up, but does not supply fluid

  1. Pressure pipe/discharge pipe clogged
  2. Flush out the pressure pipe.
  3. Flush out the pressure hose.
  4. Remove any kinks in the pressure hose.
  5. Swing check valve contaminated
  6. Shut down the pump, remove it and clean the discharge connection.
  7. Replace faulty swing check valve.
  8. Water level too low
  9. Check inlet.
  10. Pump is pumping at a too low level. Check the switching cycle of the float switch.
  11. Suction port/strainer silted/clogged
  12. Shut down the pump, remove it and clean it.
  13. Air in the pump/pressure pipe
  14. Position the pump at a slight angle to allow air to escape.
  15. Install a bleed unit in the pressure pipe.

Delivery rate drops while the pump is running

  1. Pressure pipe/discharge pipe clogged
  2. Flush out the pressure pipe.
  3. Flush out the pressure hose.
  4. Remove any kinks in the pressure hose.
  5. Suction port/strainer silted/clogged
  6. Shut down the pump, remove it and clean it.
  7. Air in the pump/pressure pipe
  8. Position the pump at a slight angle to allow air to escape.
  9. Install a bleed unit in the pressure pipe.
  10. Signs of wear
  11. Contact customer service.

Customer service

If the points listed here do not rectify the fault, contact customer service. Costs may be incurred when using customer service support! Please contact customer services for more information.