Problems in the performance testing of rotary pumps
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Our unit ordered four 1000KW double-suction centrifugal pumps. Performance tests were conducted in accordance with the standards for rotary pumps, and since the flow rate and head obtained from these tests exceeded the design requirements, the factory modified the pump impellers. The question now is whether to proceed with the tests after cutting How can it be produced without an experiment report? Are there **standards** for this?
The factory’s position is that the performance can be guaranteed after the impeller is cut, and they do not want to conduct performance tests.
Logically, we still need to test one to provide you with a reference
The impeller cutting value needs to be calculated. What if there are errors in the calculation or issues with the precision of the machining dimensions? Lol It’s necessary to retest at least one unit, in my opinion :$
If the cutting amount of the impeller diameter exceeds 5% of the original diameter, it is necessary to try again.
For you, isn’t this just substandard product? How can it pass the inspection? Maybe you can even file a claim; P
It has to be done; the standard is unknown, but it’s about the manufacturer’s attitude. . . . .
We conduct factory performance tests; after machining by the manufacturer, no further performance tests are carried out
No, it’s to conduct factory performance tests. After testing, it is sent to the site