Booster Pump Failure Analysis & Repair During Maintenance

Maintenance

Here we list the failures during using booster pump. If you meet problems like these, just refer to the analysis and troubleshooting for fast solving. If it doesn't work, just contact us, we will help you solve them.

Troubles, Reasons & troubleshooting
Troubles Reasons Solutions
When the starter is closed, the motor cannot move
  • Power supply failure
  • Blown fuse
  • Motor overload
  • Poor starter contact or faulty coil
  • Faulty control circuit
  • Motor malfunction
  • Check the power supply
  • Replace a new fuse
  • Check the system
  • Replace a new starter
  • Check the control circuit
  • Repair the motor
Starter overload device tripping off (Trip off immediately after the power is closed)
  • Broken fuse
  • Faulty contact with overload device
  • Loose cable wiring or faulty power supply
  • Faulty motor coil
  • Jammed pump mechanical part
  • Replace a new fuse
  • Check the starter
  • Check the cable wiring and power supply
  • Replace a new motor
  • Check the pump
Overload device trips off accidentally
  • Overload setting is too low
  • Periodic power failure
  • Low voltage during peak power usage
  • Reset
  • Check the power supply
  • Add a voltage regulator
Overload device does not trip off, but the pump does not work
  • Poor starter contact or faulty coil
  • Faulty control circuit
  • Replace a new starter
  • Check the control circuit
Uneven pump discharge
  • Inlet pipe is too small
  • Not enough water at the pump inlet
  • Liquid level is too low
  • Pipeline loss and flow ratio, inlet pressure is too small
  • Inlet pipe partially blocked by impurities
  • Enlarge the inlet pipe
  • Improve the system and try to increase the water volume
  • Try to raise the liquid level
  • Improve the system and increase the inlet pressure
  • Check and clean the dirt
Pump is running, but no water comes out
  • The inlet pipe is blocked by impurities
  • Bottom valve or positive return valve in closed position
  • Inlet pipe leakage
  • Air in the inlet pipe or pump
  • Check and clean the dirt
  • Check the bottom valve or check valve
  • Repair the inlet pipe
  • Refill the liquid and remove the air
When the power is disconnected, the pump runs in the opposite direction
  • Inlet pipe leakage
  • Faulty bottom valve or check valve
  • The bottom valve is blocked in the open or closed position
  • Air pocket in inlet pipe
  • Check the inlet pipe
  • Check the bottom valve or check valve
  • Check the bottom valve
  • Refill the liquid and remove the air
Pump has abnormal vibration and noise
  • The pump mechanical parts wear against each other
  • Inlet pipe leakage
  • Intake pipe is too small or partially blocked by impurities
  • Air in the inlet pipe or pump
  • Abrasion between the mechanical parts of the pump
  • Check the inlet pipe
  • Enlarge or repair the inlet pipe
  • Refill liquid to remove air
  • Check the pump