The failure of the phenomenon (no water)
Cause analysis:
1 pump shell without storage or storage
2 suction pipe leakage
3 speed is too low
4 suction suction pipe is too high or too long
5 mechanical seal leakage is too large
6 suction pipeline gas can not be discharged from the outlet
Elimination method:
1 plus foot reservoir
2 check and eliminate the leakage phenomenon
3 adjust speed
4 reduce the suction process or shorten the suction line
5 repair or replace
6 discharge
Noise and vibration
Cause analysis:
1 foot instability
2 pump shaft bending
3 cavitation
4 serious bearing wear
5 there are impurities in the import pipeline
6 pumps and motors are not concentric spindle
Elimination method:
1 reinforcement
2 replacement or correction
3 adjusted operating conditions
4 Replacement
5 removal of debris
6 adjust the coaxial degree
The lack of water
Cause analysis:
1 impeller flow channel and the suction pipe is blocked
2 impeller or impeller seal wear serious
3 lack of power or speed is too low
Elimination method:
1 remove blockage
2 replace the mouth ring
3 full power and adjusted to the rated speed
Shaft power consumption is too large
Cause analysis:
1 flow is too large
2 speed is too high
3 pump shaft bending or impeller card touch
4 pump flow channel blocked or stuck
Elimination method:
1 increase the export pressure
2 appropriate reduction
3 replacement or correction
4 queue blockage
