The reason for the sudden decrease in water output of the submersible pump
1. Impeller or pump body flow channel blockage
Reason: Impurities (such as water grass, sediment) block the impeller or pump body flow channel, resulting in a decrease in flow rate and head.
Solution: Disassemble the pump and clean up debris to ensure smooth flow channels. If necessary, install a filter or protective cover to clean the submersible pump impeller.
2. Power supply issues
Low voltage: Insufficient voltage leads to a decrease in rotational speed, affecting water output.
Reverse: Connecting the power phase sequence in reverse will cause the water pump to operate in reverse, significantly reducing the water output.
Solution: Check if the voltage meets the standard, adjust the phase sequence (swap any two phase power lines).
3. Improper pipeline design
Reason: The outlet pipe diameter is too small, the pipeline is too long, or there are too many bends, which increases resistance.
Solution: Recalculate the pipeline parameters, adjust the pipe diameter or reduce bends according to the instructions, and if necessary, replace the submersible pump pipeline design with a higher head pump.
4. Water level or installation issues
Low water level: causing partial dehydration of the water pump, resulting in cavitation or poor heat dissipation.
Solution: Adjust the submergence depth of the pump to ensure it is always submerged in water.
5. Mechanical wear or damage
Wear and tear of impeller/pump cover: Long term use can reduce efficiency due to wear and tear.
Broken or loose shaft: Abnormal operating current (such as fluctuating high and low) may indicate mechanical failure.
Solution: Disassemble and replace worn parts, or contact professional maintenance.
6. Changes in liquid properties
High viscosity or high solid content: Exceeding the design range of the water pump, resulting in overload or a decrease in flow rate.
Solution: Replace the pump type suitable for high viscosity liquids or clean impurities.
Other precautions
Current monitoring: If the current is abnormal (such as continuously high or fluctuating), it is necessary to investigate motor or control system issues.
Filter blockage: Regularly clean the inlet filter to avoid poor water flow.
