1. The power consumption of vacuum pump is too high

(1) the solution to the wrong rotation direction: check the rotation direction.

(2) impeller damage solution: check the impeller and replace it as required.

(3) the solution to the seizure of rotating parts: check whether the clearance of internal wear parts is normal.

(4) shaft bending solution: straighten the shaft or replace it as required.

2. The vacuum pump will stop after running for a while

(1) solution for too high suction head: check the existing net head (too small or too long inlet pipeline will cause great friction loss).

(2) solution for impeller or pipeline blockage: check whether there are obstacles.

(3) solution for air generation or leakage of inlet pipeline: check whether there is air hole and / or air leakage in the inlet pipeline.

(4) the packing or seal in the stuffing box is worn, so that the air leaks into the vacuum pump shell. Solution: check the packing or seal and replace it as required, and check whether the lubrication is normal.

3. No liquid supply, insufficient liquid supply or insufficient pressure:

(1) the vacuum pump is not filled with water or properly vented. Solution: check whether the vacuum pump shell and inlet pipeline are fully filled with liquid.

(2) solution for too low speed: check whether the wiring of the motor is correct, whether the voltage is normal or whether the steam pressure of the turbine is normal.

(3) solution for too high water head of the system: check the water head of the system (especially the friction loss).

(4) solution for too high suction head: check the existing net head (too small or too long inlet pipeline will cause great friction loss).

(5) solution for impeller or pipeline blockage: check whether there are obstacles.