• When you install pressure control pump, try to avoid expose it to sun or moisture environment.
  • Please make sure the power is turn off before you start repair or dismantle the pump.

Unusual phenomenon

Malfunction Routine/Cause

Solutions

The pump can't star or after it starts, it will stop immediately
  1. Power is not turn on or the cable is not plug in.
  2. Connects to wrong voltage.
  3. The shaft is stuck due to dust inside the pump.
  4. Thermal protector is broken.
  5. Capacitor is burned up.
  6. Motor wiring is burned up.
  7. Pressure switch is malfunction.
  8. Motor protector forces the motor to turn off.
  1. Re-connects the power again.
  2. Test and make sure it's the right voltage.
  3. Rotates the shaft from the back of motor.
  4. Replaces it.
  5. Replaces it. Makes sure there's no voltage drops on the site.
  6. Replaces it.
  7. Replaces it.
  8. Waits until the motor temperature has dropped down to normal temp.
On/Off frequently
  1. Pressure switch is broken.
  2. Diaphragm inside pressure tank is broken.
  3. Shaft of check valve is hardened.
  4. There is air inside the pump.
  5. Discharge pipeline has leakage.
  1. Adjusts or replaces it.
  2. Replaces it.
  3. Replaces it.
  4. Opens check valve lid and discharges the air.
  5. Checks for leakage in the pipeline.
Motor is running, but capacity is small
  1. Impeller is damaged.
  2. Air is inside the pump.
  3. Actual performance can't reach custoper requirement.
  4. Pipeline leakages.
  1. Changes impeller.
  2. Opens drain plug and discharges the air.
  3. Changes to a bigger horsepower pump.
  4. Checks for leakage in the pipeline.
Motor is running, but there is no water (used for underground water)
  1. Suction lift requirement is too high.
  2. Foot valve is leaking or it didn't submerge under water level.
  3. User didn't fill water into the pump.
  4. Suction pipeline is leaking or stuck by something elsa.
  1. Changes a new pump with better suction lift performance.
  2. Replaces or adjusts foot valve and the depth.
  3. Fills water into the pump.
  4. Changes pipeline and cleans obstacle.
Motor casing is overheated
  1. Voltage is not normal.
  2. 24hrs continuous operation.
  1. Improves local site power source.
  2. Stops the pump, and try to avoid continuous operation.
Motor is producing loud noise
  1. Bearing is broken.
  2. Obstacle inside the pump.
  1. Replaces bearing.
  2. Dismantles and cleans it.
  • EKLBJ and SQD series can be used for underground water. Suction lift up to 9m.
  • When you install CPU control pump, try to avoid expose it to sun or moisture environment.
  • Please make sure the power is turn off before you start repair or dismantle the pump.

Unusual phenomenonMalfunction Routine / CauseSolutions
The pump can't star
  1. Power is not turn on or the cable is not plug in.
  2. Connects to wrong voltage.
  3. The shaft is stuck due to dust inside the pump.
  4. Thermal protector is broken.
  5. Capacitor is burned up.
  6. Motor wiring is burned up.
  1. Re-connects the power again.
  2. Test and make sure it's the right voltage.
  3. Rotates the shaft from the back of motor.
  4. Replaces it.
  5. Replaces it. Makes sure there's no voltage drops on the site.
  6. Replaces it.
Motor is running, but capacity is small
  1. Impeller is damaged.
  2. Air is inside the pump.
  3. Actual performance can't reach custoper requirement.
  4. Pipeline leakages.
  1. Changes impeller.
  2. Opens drain plug and discharges the air.
  3. Changes to a bigger horsepower pump.
  4. Checks for leakage in the pipeline or valve.
Motor is running, but there is no water (used for underground water)
  1. Suction lift requirement is too high.
  2. Foot valve is leaking or it didn't submerge under water level.
  3. User didn't fill water into the pump.
  4. Suction pipeline is leaking or stuck by something elsa.
  1. Changes a new pump with better suction lift performance.
  2. Replaces or adjusts foot valve and the depth.
  3. Fills water into the pump.
  4. Changes pipeline and cleans obstacle.
Motor casing is overheated
  1. Voltage is not normal.
  2. 24hrs continuous operation.
  1. Improves local site power source.
  2. Stops the pump, and try to avoid continuous operation.
Motor is producing loud noise
  1. Bearing is broken.
  2. Obstacle inside the pump.
  1. Replaces bearing.
  2. Dismantles and cleans it.
After it starts for a while, it stops immediately
  1. Abnormal voltage.
  2. Impeller is stuck with obstacle.
  3. Motor protector is off.
  1. Checks voltage and uses right voltage.
  2. Dismantles pump and cleans impeller.
  3. After find out where the problem is, restart the pump.
  • This series is not suitable for underground water
  • If troubleshooting or maintenance is needed, please contact professional technician or plumber.
  • Please make sure the power is turn off before you star repair or dismantle the pump.

Unusual phenomenonMalfunction Routine / CauseSolutions
The pump can't star
  1. Power is not turn on.
  2. Connects to wrong voltage.
  3. Sensor is broken.
  4. CPU circuit board is burned up.
  5. Capacitor is burned up.
  6. Motor wiring is burned up.
  1. Re-connects the power again.
  2. Test and make sure it's the right voltage.
  3. Replaces it.
  4. Replaces it.
  5. Replaces it. Makes sure there's no voltage drops on the site.
  6. Replaces it.
On/Off frequently
  1. Pressure switch is broken.
  2. Diaphragm inside pressure tank is broken.
  3. Check valve is hardened or stuck.
  4. There is air inside the pump.
  5. Discharge pipeline has leakage.
  1. Adjusts or replaces it.
  2. Replaces it.
  3. Replaces it.
  4. Opens check valve lid and discharges the air.
  5. Checks for leakage in the pipeline.
Motor is running, but capacity is small
  1. Impeller is damaged.
  2. Air is inside the pump.
  3. Actual performance can't reach custoper requirement.
  4. Pipeline or valve leakages.
  1. Changes impeller.
  2. Opens drain plug and discharges the air.
  3. Changes to a bigger horsepower pump.
  4. Checks for leakage in the pipeline or valve.
After it starts for a while, it stops immediately
  1. Abnormal voltage.
  2. Impeller is stuck with obstacle.
  3. When water shortage occurs, pump will stop automatically.
  1. Checks voltage and uses right voltage.
  2. Dismantles pump and cleans impeller.
  3. Restarts the pump when water returns.
Motor is producing loud noise
  1. Bearing is broken.
  2. Obstacle inside the pump.
  1. Replaces bearing.
  2. Dismantles and cleans it.
  • If troubleshooting or maintenance is needed, please contact professional technician or plumber.
  • Please make sure the power is turn off before you star repair or dismantle the pump.

Unusual phenomenonMalfunction Routine / CauseSolutions
The pump can't star
  1. Power is not turn on
  2. Connects to wrong voltage.
  3. Pressure sensor is broken.
  4. Inverter is burned up.
  5. Capacitor is burned up.
  6. Motor wiring is burned up.
  1. Re-connects the power again.
  2. Test and make sure it’s the right voltage.
  3. Replaces it.
  4. Replaces it.
  5. Replaces it. Makes sure there’s no voltage drops on the site.
  6. Replaces it.
On/Off frequently
  1. Diaphragm inside pressure tank is broken.
  2. Check valve is hardened or stuck.
  3. There is air inside the pump.
  4. Discharge pipeline has leakage.
  1. Replaces it.
  2. Replaces it.
  3. Opens check valve lid and discharges the air.
  4. Checks for leakage in the pipeline.
Motor is running, but capacity is small
  1. Impeller is damaged.
  2. Air is inside the pump.
  3. Actual performance can't reach custoper requirement.
  4. Pipeline or valve leakages.
  1. Changes impeller.
  2. Opens drain plug and discharges the air.
  3. Changes to a bigger horsepower pump.
  4. Checks for leakage in the pipeline or valve.
After it starts for a while, it stops immediately
  1. Abnormal voltage.
  2. Impeller is stuck with obstacle.
  3. When water shortage occurs, pump will stop automatically.
  1. Checks voltage and uses right voltage.
  2. Dismantles pump and cleans impeller.
  3. Restarts the pump when water returns.(Turn “OFF”, then turn “ON”)
The pump is unable to stop
  1. Pressure sensor is broken
  2. Inverter pressure setting is too high. It might be higher than max. head that this pump can reach.
  1. Replaces it.
  2. Adjusts pressure setting from inverter panel.
The current is too high
  1. Bearing is broken
  2. Obstacle inside the pump
  3. Motor reverse phase
  4. Abnormal voltage
  1. Replaces bearing.
  2. Dismantles and cleans it.
  3. Replaces 2 wires in 3 phase wires.
  4. Checks voltage.
*This series is not suitable for underground water

  • If troubleshooting or maintenance is needed, please contact professional technician or plumber.
  • Please make sure the power is turn off before you star repair or dismantle the pump.

Unusual phenomenonMalfunction Routine / CauseSolutions
The pump can't star
  1. Power is not turn on or the cable is not plug in.
  2. Connects to wrong voltage.
  3. The shaft is stuck due to dust inside the pump.
  4. Capacitor is burned up.
  5. Motor wiring is burned up.
  6. Mech. seal wears out that could cause leakage.
  7. Control panel malfunction.
  8. Motor protector forces the motor to turn off.
  1. Re-connects the power again.
  2. Test and make sure it's the right voltage.
  3. Rotates the shaft from the back of motor.
  4. Replaces it. Makes sure there's no voltage drops on the site.
  5. Replaces it.
  6. Replaces it.
  7. Examines or replaces it.
  8. Waits until the motor temperature has dropped down to normal temp.
Motor is running, but capacity is small
  1. Impeller is damaged.
  2. Air is inside the pump.
  3. Actual performance can't reach custoper requirement.
  4. Pipeline or valve is leaking or stuck.
  5. The strainer is stuck.
  6. Motor reverse phase.
  7. Mech. seal is leaking.
  1. Changes impeller.
  2. Opens drain plug and discharges the air.
  3. Changes to a bigger horsepower pump.
  4. Checks for leakage in the pipeline or valve.
  5. Cleans obstacle in the strainer.
  6. Replaces 2 wires in 3 phase wires.
  7. Replaces it.
Motor is running, but there is no water (used for underground water)
  1. Suction lift requirement is too high.
  2. Foot valve is leaking or it didn't submerge under water level.
  3. User didn't fill water into the pump.
  4. Suction pipeline is leaking or stuck by something elsa.
  1. Changes a new pump with better suction lift performance.
  2. Replaces or adjusts foot valve and the depth.
  3. Fills water into the pump.
  4. Changes pipeline and cleans obstacle.
After it starts for a while, it stops immediately
  1. Abnormal voltage.
  2. Impeller is stuck with obstacle.
  3. Motor protector forces the motor to turn off.
  1. Checks voltage and uses right voltage.
  2. Dismantles pump and cleans impeller.
  3. Restarts the pump after find out the cause of it.
The current is too high
  1. Bearing is broken
  2. Obstacle inside the pump
  3. Motor reverse phase
  4. Abnormal voltage
  1. Replaces bearing
  2. Dismantles and cleans It
  3. Replaces 2 wires in 3 phase wires.
  4. Checks voltage.
Motor is producing loud noise
  1. Bearing is broken.
  2. Obstacle inside the pump.
  1. Replaces bearing.
  2. Dismantles and cleans it.