I.Starting Difficulty

1.Pump sedimentation:Material solidification after shutdown requires thorough pump cavity cleaning.

2.Rotor jamming:

-Thermal expansion/corrosion:Replace temperature/corrosion-resistant rotors.

-Fiber/metal debris:Clean pump body;install shredder at inlet.

3.Assembly deviation:Recalibrate excessive axial tolerance.

4.Insufficient power:Upgrade to工况-matched motor.

II.Suction Failure

1.Procedural errors:

-Valve closed/wrong flow direction:Open valves or correct motor rotation.

-Inlet clogging/leakage:Clear pipes;tighten flanges/replace gaskets.

2.Operating limits exceeded:

-Excessive self-priming height:Lower installation height or prime pump.

-Air entrapment:Vent pipeline gas.

3.Component damage:

-Mechanical seal failure:Replace seal assembly.

-Rotor coating damage:Install medium-corrosion-resistant rotor.

III.Abnormal Vibration

1.Parameter mismatch:Adjust speed/inlet pressure.

2.Component wear:

-Rotor imbalance:Replace with dynamically-balanced rotor.

-Bearing failure:Replace immediately.

3.System blockage:Clean inlet pipes.

IV.Seal Leakage

1.Cavity seal failure:

-Isolation chamber leak:Replace O-rings/mechanical seals.

2.Connection leakage:

-Seals aging:Renew packing/gaskets.

-Loose flange:Tighten bolts/repair sealing surface.

V.Performance Degradation

1.Flow/head deficiency:

-Inlet resistance:Clear filter/pipe blockages.

-Low speed:Verify motor frequency/transmission ratio.

2.Flow path blockage:Clean rotor/pump cavity deposits.

VI.Excessive Noise

1.Bearing damage:Replace if abnormal sound occurs.

2.Rotor imbalance:Correct concentricity/dynamic balance.

3.Installation defects:Reinforce base/verify alignment precision.

VII.Motor Faults

1.Electrical issues:Inspect and secure terminals.

2.Bearing wear:Replace motor bearings.

(Bonve Pumps After-Sales Service System)

For Bonve rotor pump after-sales needs,contact us for professional solutions:

Bonve adheres to the philosophy of"Dedicated to Excellence in Rotor Pumps,"providing customized global solutions for fluid transfer and mixing.For technical consultations,model selection,case references,or collaborations,reach us at:

Tel:0574-87588986/+86 13586591794

Official:www.bvpumps.com

Email:market@bonvepumps.com

We look forward to advancing industrial fluid transfer efficiency and innovation through precision technology.