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ECM(H) Horizontal multi-stage pump troubleshooting

ECM系列
ECMH系列
EBF 系列
EDWK 系列
※ Before you dismantle the pump or open terminal box, please make sure the power has turned off.
 Unusual phenomenon Malfunction Routine/Cause Solutions
The pump can’t start or after it starts, it will stop immediately
  1. Voltage drops.
  2. The power plug doesn’t connect properly or fuse is burned up.
  3. The motor or fuse is burned up.
  4. The motor or float switch is malfunctioned.
  5. The motor protector is off.
  6. The Earth Leakage Circuit Breaker is off.
  7. The impeller is jammed due to obstacle inside the pump. 
  1. solution.
  2. Re-connects the plug properly and replaces the fuse.
  3. Replaces it.
  4. Replaces it.
  5. Waits until the motor temperature has dropped down to normal temp.
  6. Checks if there’s water leakage inside the motor or if there’s current overload problem.
  7. Dismantle the pump and cleans it. 
The pump can’t provide water after it starts or capacity is small
  1. Check valve is malfunctioned.
  2. Suction pipeline is leaking.
  3. The length of suction pipeline is not deep enough 
  4. The mech. seal is leaking.
  5. The voltage is too high.
  6. The impeller has worn out cause motor efficiency to lower down.
  7. The pipeline is stuck with obstacle.
  8. The pipeline is too long.  
  1. Cleans or replaces it.
  2. Finds out the leakage part and fixes it.
  3. Adjusts it to proper depth. 
  4. Replaces it.
  5. Contacts power company for solution.
  6. Replaces it.
  7. Cleans the pipeline.
  8. Replaces the motor to bigger horsepower.
 The pump can’t 
stop.
  1. Voltage drops.
  2. The pipeline is leaking.
  3. The mech. seal is leaking.
  4. The float switch is malfunctioned.
  5. The impeller has worn out cause motor efficiency to lower down. 
  1. Contacts power company for solution.
  2. Finds out the leakage part and fixes it.
  3. Replaces it.
  4. Replaces it.
  5. Replaces it.
 On/Off frequently
  1. Check valve is malfunctioned.
  2. The pipeline or valve or tap is leaking.
  1. Cleans or replaces it.
  2. Finds out the leakage part and fixes it.
The pump starts/stops frequently, and it produces small capacity.
  1. Check valve is malfunctioned.
  2. The pipeline is leaking.
  3. The float switch is not active.
  1.  Cleans or replaces it.
  2. Finds out the leakage part and fixes it.
  3. Replaces it.

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