1. The pump is not suctioning or draining properly. This issue is often caused by a stuck discharge valve, clogged water filter, excessive suction height, or leakage in the suction pipe. Each potential cause should be checked individually. Repair the valve, clear any blockages, adjust the suction height, and ensure all connections are tight to resolve the problem.
2. There may be leaks in the pipeline or joints. This is commonly due to loose nuts or fittings. If the leak is minor, you can apply sealing compound, wet clay, or soft soap at the affected area. For joint leaks, use a wrench to tighten the nut securely. In cases of severe leakage, it's necessary to disassemble and reseal the system properly.
3. The pump is experiencing violent vibrations. This could be due to an unbalanced rotor, a faulty coupling, worn bearings, bent shafts, loose rotating parts, or weak pipe supports. Inspect the internal components, reinforce the structure if needed, and replace damaged parts to reduce or eliminate the vibration.
4. The impeller may be broken or damaged. If the damage is minor, it can be repaired using appropriate methods. However, if the damage is significant, consider replacing the impeller or applying a cemented carbide coating for added durability. In cases where the impeller is completely destroyed, it should be removed and sent to a professional repair shop for assessment and replacement.
5. The pump shaft may be bent. This often happens due to excessive impact loads, overly tight belts, or incorrect installation. If the bend is slight, you can attempt to straighten it manually using a screw jack, but be careful not to apply too much force, as this could lead to further damage or even breakage. Always inspect the shaft after correction to ensure it is functioning properly.
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