Symptoms |
Possible Causes |
Solution |
the pump is not absorbent; pressure gauge and vacuum gauge pointer violently beating |
Injected into the water pump is not enough; pump or instrument leaks |
Fill the water pump again; tighten or plug the leak out |
the pump does not absorb water, the vacuum gauge shows a high degree of vacuum |
Water inlet pipe is not open or blocked; water absorption resistance is too large; water absorption height is too large to exceed allowable value |
Check the inlet pipe; clean or replace the suction pipe; reduce the water absorption heigh |
look at the pressure gauge water pump pressure, and the pump is still water |
Outlet resistance is too large; rotation direction is not correct; impeller blockage; pump speed is not enough |
Check or shorten the outlet pipe; change the motor steering; clean the impeller; increase the pump shaft speed |
traffic is lower than expected |
Pump blocked; too much wear on the seal ring; insufficient speed |
Clean the pump and pipe; replace the seal ring; increase the pump shaft speed |
the pump consumes too much power |
Gland packing too tight; impeller wear; pump water supply increased |
Loosen the packing gland or remove the packing; replace the impeller; adjust the gate valve to reduce the flow rate |
the pump in the process of abnormal sound, flow down until no water; balance device early wear and tear |
Gate valve open too much; suction pipe resistance is too large; there is air infiltration at the water absorption; excessive water absorption; the liquid temperature is too high |
Adjust gate valve to reduce flow; check suction pipe; check bottom valve; reduce suction height; tighten or plug leaks; reduce liquid temperature |
pump vibration |
Pump shaft and motor axis are not in the same center line |
Align pump with motor shaft centerline |
bearing overheating |
No oil or oil dirty; pump shaft and motor shaft is not a centerline |
Fill or change oil; align the shaft centerline |