Boiler feed pump common troubleshooting

Symptoms cause of issue Method of exclusion
Flow head reduced 1, there is gas in pump or suction pipe;
2, pump or pipeline debris clogging;
3, the rotation direction is wrong;
4, impeller runner misalignment;
1, exclude gas, check clean debris, change the direction of rotation;
2, check, correct the alignment;
Current rises 1, rotor and stator rub; 1, disintegration and repair
Vibration increased 1, pump rotor or motor rotor imbalance;
2, poor shaft and motor shaft alignment;
3, bearing wear and tear, the gap is too large;
4, loose anchor bolts or foundation is not strong;
5, pumping time;
6, rotor parts loose or damaged;
7, stent is not strong cause pipeline vibration;
8, there is contact within the pump and friction;
1, the rotor rebalance;
2, recalibrate the motor;
3, repair or replacement of bearings;
4, fastening bolts or reinforcement foundation;
5, to adjust the process;
6, fastening or replacement of loose parts, pipe brackets reinforcement;
7, remove the pump check, eliminate friction;
Sealing leaks serious 1, poor shaft or motor shaft alignment or bending;
2, bearing or seal ring wear too much, the formation of eccentric rotor;
3, mechanical seal damage or improper installation;
4, improper sealing liquid pressure;
5, packing is too loose
6, operating fluctuations;
1, recalibrate the motor;
2, replace and correct the axis;
3, replace the inspection seal;
4, larger than the sealed cavity pressure 0.05-0.15mpa;
5, re-adjust the packing;
6, stable operation
Bearing temperature is too high 1, the bearing is not installed correctly
2, the rotation part of the balance is destroyed;
3, bearing box oil is too small, too much or too dirty deterioration;
4, bearing wear or loose;
5, bearing cooling effect is not good;
1, reassemble the bearings as required
2, check to eliminate imbalances;
3, according to the provisions of adding oil or replace oil;
4, repair replacement or fastening bearings;
5, check and adjust the lubrication cooling system;
Bearing temperature is too high 1, the bearing is not installed correctly
2, the rotation part of the balance is destroyed;
3, bearing box oil is too small, too much or too dirty deterioration;
4, bearing wear or loose;
5, bearing cooling effect is not good;
1, re-distribution of bearings as required;
2, check to eliminate imbalances;
3, according to the provisions of adding oil or replace oil;
4, repair replacement or fastening bearings;
5, check and adjust the lubrication cooling system;
Symptoms Trouble Cause Remedy Lowering the head of the flow 1, There is gas in the pump or suction pipe;
2, pump or pipeline debris clogging;
3, the rotation direction is wrong;
4, the impeller flow path is not aligned; 1, remove the gas, check clean debris, change the direction of rotation;
2, Check and correct the alignment of the flow channel; Current rise 1, Rub the rotor and stator; 1, Disassemble and repair; Increase vibration 1, Pump rotor or motor rotor imbalance;
2, poor shaft and motor shaft alignment;
3, bearing wear and tear, the gap is too large;
4, loose anchor bolts or foundation is not strong;
5, pumping time;
6, rotor parts loose or damaged;
7, stent is not strong cause pipeline vibration;
8, there is contact within the pump and friction; 1, the rotor rebalance;
2, recalibrate the motor;
3, repair or replacement of bearings;
4, fastening bolts or reinforcement foundation;
5, to adjust the process;
6, fastening or replacement of loose parts, pipe brackets reinforcement;
7, remove the pump inspection, to eliminate friction; seal leak serious 1, poor shaft or motor shaft bending or bending;
2, bearing or seal ring wear too much, the formation of eccentric rotor;
3, mechanical seal damage or improper installation;
4, improper sealing liquid pressure;
5, packing is too loose
6, operating fluctuations; 1, re-calibration motor;
2, replace and correct the axis;
3, replace the inspection seal;
4, larger than the sealed cavity pressure 0.05-0.15mpa;
5, re-adjust the packing;
6, stable operation; bearing temperature is too high 1, the bearing installation is not correct;
2, the rotation part of the balance is destroyed;
3, bearing box oil is too small, too much or too dirty deterioration;
4, bearing wear or loose;
5, the bearing cooling effect is not good; 1, reassemble the bearing as required;
2, check to eliminate imbalances;
3, according to the provisions of adding oil or replace oil;
4, repair replacement or fastening bearings;
5, check and adjust the lubrication cooling system; bearing temperature is too high 1, the bearing is not installed correctly;
2, the rotation part of the balance is destroyed;
3, bearing box oil is too small, too much or too dirty deterioration;
4, bearing wear or loose;
5, bearing cooling effect is not good; 1, according to the requirements of re-distribution of bearings;
2, check to eliminate imbalances;
3, according to the provisions of adding oil or replace oil;
4, repair replacement or fastening bearings;
5, check and adjust the lubrication cooling system;

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