1. The high-pressure water pump does not absorb water or discharge water. Most of the failures are caused by the stuck bottom valve, blockage of the filter water part, too high water absorption height or air leakage of the water suction pipe. They should be checked one by one, and the bottom valve should be repaired, the blockage should be removed, and the steering should be corrected.
2. The pipeline leaks water or air. Mostly because the nut is not tightened. If the leakage is not serious, you can apply cement slurry, wet mud or soft soap to the leakage; if there is water leakage at the joint, you can use a wrench to tighten the nut. In case of serious water or air leakage, it must be disassembled and assembled again.
3. The multi-stage high-pressure pump vibrates violently. It may be that the electric rotor is unbalanced or the coupling is not well combined. Sometimes the bearing is worn and bent, the parts in the rotating part are loose and broken, and the pipeline support is not firm, which will also cause vibration. They should be adjusted, reinforced, checked or replaced respectively.
4. The impeller is broken. When the damage is not serious, it can be repaired. When the damage is serious, it should be replaced or plated with hard alloy. If it is completely damaged, the impeller should be removed and sent to a repair shop for repair.
5. The pump shaft is bent. It is mostly caused by impact load, belt tension, incorrect installation, etc. If the bend is not serious, it can be corrected with a manual screwdriver, but the force should not be too strong to prevent it from breaking.
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