During pump factory acceptance testing, which performance indicators should be verified?
• Conclusion: verify five performance curves—flow, head, efficiency, shaft power and NPSH.
• Flow and head tolerances follow ISO 9906 Grade 2B, typically ±5%.
• Efficiency must not fall below guaranteed value; Grade 2B tolerance is -5%.
• Test must cover 0.6, 0.8, 1.0 and 1.2 times rated flow and record data.
• Require vibration, noise and bearing temperature rise data; vibration ≤4.5 mm/s.
• Flow and head tolerances follow ISO 9906 Grade 2B, typically ±5%.
• Efficiency must not fall below guaranteed value; Grade 2B tolerance is -5%.
• Test must cover 0.6, 0.8, 1.0 and 1.2 times rated flow and record data.
• Require vibration, noise and bearing temperature rise data; vibration ≤4.5 mm/s.