Problem 1：Pump fails to operate
Q1. Power failure
A1. Check the voltage. Contact power supplier for solution
Q2. Defective cable
A2. Replace power cable
Q3. Impeller jammed or clogged
A3. Clean the impeller
Q4. The motor protector tripped
A4. Make sure liquid temperature is below 40°C pump and is completely submerged
Q5. Motor burn-out
A5. Rewind or replace the motor
Q6. Water gets into motor after mechanical seal wear
A6. Replace the mechanical seal & oil seal
Q7. Float switch defective
A7. Replace a float switch
Q8. Impeller rusted
A8. Remove rust
Q9. Faulty Control Panel
A9. Repair or replace
Problem 2：Does not pump. Inadequate volume / Low value of aeration in J Series Pump
Q1. Motor rotation reversed
A1. Reverse two of three leads on a three phase motor
Q2. Impeller worn or cavitation
A2. Replace Impeller
Q3. Strainer block
A3. Remove and clean the foreign objects
Q4. Impeller block
A4. Remove and clean the foreign objects
Q5. Valves and pipe leakage or plugged
A5. Remove plugged objects or replace
Q6. Excessive water head
A6. Consult the distributor
Q7. Air suction due to low water level
A7. Raise the water lever or adjust the float switch higher
Q8. Clogged aeration chamber (J series)
A8. Remove the foreign objects
Q9. Worn nozzle (J series)
A9. Replace with a new nozzle
Q10. Water level too high (J series)
A10. Adjust the Level Switch lower
Problem 3：Over Current
Q1. Abnormal voltage
A1. Check the power, and make sure it corresponds to the nameplate
Q2. Incorrect rotation
A2. Reverse two of three leads on a three phase motor
Q3. High viscosity liquid
A3. More liquid needs to be added to the pump fluid to decrease its viscosity(contact the distributor)
Q4. Foreign matter clogging pump or impeller
A4. Remove the foreign objects
Q5. Worn Shaft
A5. Repair and replace
Problem 4： Stops during operationPump
Q1. Foreign matter clogging pump or impeller
A1. Remove the foreign objects
Q2. Abnormal voltage
A2. Check the power, and make sure it corresponds to the nameplate
Q3. The motor protector tripped
A3. Make sure liquid temperature is below 40°C and pump is completely submerged
Problem 5：Electric Leakage Circuit Breaker Activated
Q1. Power Cable damaged
A1. Replace new power cable
Q2. Wet cable terminal
A2. Re-connect wires using waterproof tape after drying
Q3. Water ingress caused by worn mechanical seal
A3. Replace new Mechanical seals and oil seal
Q4. Motor burn out
A4. Repair or replace new motor
