Though, that centrifugal pumps are reliable devices, used for pumping liquids, they may also need repair. Improper operation is not always the cause of centrifugal pump failures, this may be due to the quality being pumped, and with a number of other factors. If the centrifugal pump malfunctions, then you must first eliminate external causes and only then diagnose the equipment itself.
Disassembly of the centrifugal pump
To significantly extend the service life of the centrifugal pump and to face the repair of such equipment as rarely as possible, you must use this device properly. The operating instructions for the centrifugal pump require compliance with the following rules.
During operation of this pump depressurization of input of a cable was allowed, as a result of which the motor winding burned out
First, what needs to be done, if malfunctions are noticed in the work of the pumping equipment, - stop its operation and start a thorough inspection of all components. Quite a common situation, in which pumping equipment requires maintenance or even repair, there is wear of seals. A number of reasons can contribute to a more active process of wear of glandular elements of pumping equipment:
The main faults in the operation of centrifugal pumps
Another common cause of incorrect operation and even failure of pumping equipment is inaccurate centering of the drive motor shaft with the pump housing. The consequences in this case may be the destruction of glandular elements, and failure of bearing assemblies.
Centrifugal pump bearings are elements, requiring the most careful attention and regular care. To minimize the risk of failure of such components and provide them with the most optimal operating conditions, it is necessary to control the amount of oil.
Repair of centrifugal pumps, as well as any other technical devices, requires certain knowledge and skills. Meanwhile, if you follow the instructions for following this procedure and follow the recommendations below, then there should be no difficulties with its implementation.
Specialists, who have experience with pumping equipment, recommend to carry out its repair in the following sequence:
Disassembling the pump, should be remembered (record or take photos) location of details
According to the above algorithm, scheduled repair of centrifugal pumps is performed, which, according to the recommendations of the manufacturers, should be carried out through each 4500 hours of its operation.
More technically complex repairs require pumping equipment after each 26000 hours of its operation. As part of such repairs with centrifugal pumps perform the following actions:
If the seasonal operated pump will leave for the winter with moisture inside, then in the spring it can jam. The problem is solved by disassembly and cleaning
When disassembling the centrifugal pump, the impellers must be removed very carefully from the shaft, it is important not to get them stuck. This procedure is performed in turn with each section. In that case, if the impeller is not removed or removed with difficulty, you can warm it up a bit.
You can heat the impeller with a portable gas burner
Assembling a centrifugal pump is a rather complicated procedure, in the process of which it is necessary to perform the following actions:
If you experience such a breakdown of the device during operation of the centrifugal pump, as the destruction of the impeller or housing, then you should not try to restore them, using for this, example, welding. Restored in this way, the wheel or body will not last long and can cause even more serious damage.
These are the details of the pump, damaged by "dry running", are not subject to repair and require replacement
Faced with the failure of the centrifugal pump, you have to evaluate, how much can it cost to repair. In some cases, when the pump failure is too severe, its repair will cost much more, than buying new equipment. In any case, the decision on the feasibility and possibility of repairing the centrifugal pump should be made only after a complete diagnosis of the equipment and identify the causes of its failure..
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