Unreasonable design of the unit inlet channel or mismatch with the unit, improper submergence depth of the water pump, and unreasonable starting and stopping sequence of the unit can worsen the inlet conditions, generate vortices, induce cavitation or worsen the vibration of the unit and pump room. When using units that break the siphon vacuum and cut off the flow, if the air entrainment in the hump section is difficult, the siphon time will be too long; The design of the flap door of the unit with the flap door cut off is unreasonable, opening and closing at times, constantly hitting the flap door seat; Uneven settlement or poor rigidity of the foundation supporting the water pump and motor can also cause vibration of the unit.

When choosing a water pump, it is best to go to a sales point recognized by the agricultural machinery department and be sure to recognize the manufacturer. It is recommended to give priority to purchasing a water filled submersible electric pump, and to have a clear understanding of the brand and product quality certificate. Never purchase products with "three no's" (i.e. no manufacturer, no production date, no production license), otherwise if problems occur, users will be helpless.

As a user, due to the limitations of professional knowledge, it is difficult to make a decision. The best way is to consult experts in the field of water pumps. It is also advisable to consult some old water pump users, especially those with similar usage conditions. Buying products that users can trust, have reliable quality, and are more mature than others is a wise choice. At the same time, the use of single-phase or three-phase pumps should be determined based on the local power supply situation.