1, why not pump water?
The reason: the water pump is not enough water, rotating the wrong direction, the impeller flow blockage
Remedy: Further injection into the pump, the impeller flow channel, adjust the rotation direction
2, the pump flow is insufficient how to do?
Reason: part of the pump blockage, the number of revolutions is too low, the total head height above the pump rating, impeller damage
Reasons to exclude: cleaning pumps and pipes, replace the impeller, increase the number of pump shaft rotation, adjust the outlet valve
3, the reasons for the lack of export pressure and solutions
Reason: There is air in the liquid, the speed is too low, the impeller is damaged and the outlet valve is opened too large
Reasons for the exclusion: to exclude the liquid air, increase pump speed, replace the impeller, adjust the small outlet valve
4, pump power consumption is too large ( motor fever) cover how to solve?
Reasons: mechanical defects such as running clearance is too small, the motor shaft bending, bolts and so on, the pump is working under too much flow that the pump is far below the rated head work
Exclusion of reasons: check the mechanical part of the timely adjustment process, adjust the outlet valve so that the pump in the vicinity of the rated flow and lift work
5, why the pump vibration? Cover how to solve?
Reason: the piping system is not good support, impeller blockage caused by an imbalance, resulting in cavitation, the liquid in the air
Reasons to exclude: Check the support department, tighten the nut, impeller impeller to balance, remove the air
6, why the pump will loopholes?
Cause: Damaged mechanical seal, o-ring damage, pump body leakage
Remedy: Replace the mechanical seals and o-rings, welding pump body leakage
7, there is noise pump over the original meaning and solution
Reason: bearing overheating lack of oil, pump overload
Reasons for exclusion: bearing refueling, according to 4 excluded
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