Applicable Model Series：HD、HDG、BD、LH、IC

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

Problem 2：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 3：Pump stops during operation

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 4：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