Why is the water pump usually installed first when the unit is installed? What is the reason for the pump shaft being connected in series?

Answer: (1) Generally, the water pump is installed first, and then the motor is installed, because the motor is only related to the location of the water pump, while the location of the water pump involves the connection of other equipment and pipelines.

(2) a. Unbalanced water inflow from both sides, causing axial push; b. Bearing wear; c. The gap left in the bearing is too large; d. Air enters the pump; e. The impeller is damaged or the impeller suction port is blocked by dirt.

(Source: Internet)