1. Motor failure: The electric motor fails to start or starts slowly
Possible reasons:
1. Insufficient voltage
2. The motor is wet.
3. The capacity of the power cord is insufficient.
4. The water pump gets stuck due to lack of oil
Solution:
1. Check the voltage and capacity of the power outlet.
2. Take necessary measures to dry the motor.
3. Replace the power cord with one with a higher capacity
4. Add lubricating oil
II. Plunger pump fault: The pump operates normally, but the system water pressure is insufficient
Possible reasons:
1. Insufficient water supply
2. The nozzle is old, damaged, or does not match the model.
3. The system has leaks,
4. The pressure regulating valve is damaged.
5. The sealing ring inside the pump is damaged
6. Impurities inside the pump
7. Nozzle blockage, high-pressure pipe blockage
8. Insufficient pump voltage
Solution:
1. Clean the filter at the water inlet
2. Use a nozzle that meets the specifications or replace it with a new nozzle
3. Check for system leaks and address them
4. Replace the pressure regulating valve.
5. Replace the sealing ring.
6. Remove the impurities from the pump.
7. Use compressed air to remove the blocked object
8. Check the voltage
III. Piston pump malfunction: The pump produces loud noise during operation
Possible reasons:
1. Air has been mixed into the system
2. There is a foreign object inside the pump
3. Bearing damage
4. Insufficient water supply
5. Shortage of lubricating oil
Solution:
1. Inspect all interfaces and perform sealing treatment
2. Shut down the machine to clean the impurities inside the pump
3. Replace the bearing
4. Increase water supply to 150% of the rated value
5. Add lubricating oil
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