Is it necessary to disassemble a multi-stage centrifugal pump completely for major repairs?
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When a multi-stage centrifugal pump reaches the time for major maintenance but is still operating well, is it necessary to disassemble it completely for inspection? Is it necessary?
A major repair definitely requires disassembly; what the poster is asking is whether it’s time for a major repair, and whether repairs are necessary if the pump is working properly.
Since the opportunity is there, and if the quality of the maintenance is satisfactory, why not carry out a thorough inspection? It seems to be working well on the surface, but it might develop problems in the future. Conducting only a partial overhaul of the equipment is a form of taking chances; it’s better to approach production with a practical and careful attitude.
What was said upstairs makes sense. top////
Reply to 1# A stone: If there’s a spare unit, there’s no need to repair it; it’s fine to wait until a failure occurs before fixing it. Generally, major repairs are carried out on those parts that cannot be repaired normally. Besides, there isn’t enough manpower; it’s better not to have it repaired at all if the person doing the repair isn’t skilled enough
Based on the operating conditions, if it runs smoothly under normal circumstances, major repairs may not be necessary. To be clear, our pumps have been in operation for 3 to 4 years without any major repairs.
Reply to 1# A Stone: Since it is a major repair, it should be completely disassembled, and assembled strictly in accordance with the technical specifications
I don’t think it’s necessary; predictive maintenance is still the better approach. One shouldn’t be too rigid and should decide based on the circumstances.