一failure: the consumed power is too large.

二, the reason:

(1) high speed;

(2) the total head is not in conformity with the pump head;

(3) the proportion of medium in conformity with the original design;

(4) the pump shaft axis and prime mover, shaft bending;

(5) rotational part and fixed part scratches occurred;

(6) impeller clearance increases with suction cover,

(7) bearing oil too much or too dirty inside the box.

三, solution:

(1) as stipulated in the specification;

(2) try to adjust the pipeline resistance;

(3) should be reduced;

(4) correction or replacement;

(5) adjust the clearance;

(6) to adjust;

(7) as stipulated in the oil level gauge add oil or replace oil.