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Pompe

Mises à jour récentes de Borra couvrant la livraison de produits, les applications techniques et les histoires de projets du côté du marché.

Pump Vibration Measurement: Build a Repeatable Route Before Diagnosing Faults
Borra Pompes

Pump Vibration Measurement: Build a Repeatable Route Before Diagnosing Faults

Pump vibration measurement is useful when the sensor location, direction, mounting method, instrument settings and operating condition are recorded consistently. A number taken from an arbitrary point on the casing cannot reliably identify a bearing defect or prove that a pump meets an acceptance standard. Establish an approved measurement route, collect a baseline at a known duty, and compare like with like before choosing corrective work. This guide covers planning and documenting measurements on industrial water-pump installations. It does not supply a...

Centrifugal Pump Impeller Trimming: When to Consider It and What to Verify
Borra Pompes

Centrifugal Pump Impeller Trimming: When to Consider It and What to Verify

Centrifugal pump impeller trimming is a manufacturer-controlled reduction of an impeller's outside diameter to change the pump's performance. It can be useful when an installed pump consistently provides more head than a reasonably stable duty requires. It is not a universal repair for poor performance, and it should not be specified from a guessed diameter ratio. Confirm the real system requirement, obtain a supplier-approved trimmed curve, and review efficiency, operating range, suction conditions, mechanical suitability, and the complete cost before authorising any...

Centrifugal Pump Runout: Diagnose Excess Flow and Low System Resistance
Borra Pompes

Centrifugal Pump Runout: Diagnose Excess Flow and Low System Resistance

Centrifugal pump runout describes operation toward the high-flow end of a pump curve, where the installation can push the pump beyond its approved operating range. It is different from mechanical shaft runout, which concerns geometric deviation of a rotating part. Diagnose hydraulic runout by measuring the actual flow, head, speed, and suction condition, then comparing the operating point with the correct manufacturer's curve and limits. A low discharge-pressure reading alone does not prove runout, and an apparently healthy motor current does not...

Direction de rotation de la pompe centrifuge : Vérifiez-le avant la mise en service
Borra Pompes

Direction de rotation de la pompe centrifuge : Vérifiez-le avant la mise en service

La direction correcte de rotation de la pompe centrifuge est celle indiquée pour l’ensemble de la pompe, selon l’extrémité de référence indiquée par le fabricant. Vérifiez l’orientation des flèches sur le carter ou l’ensemble et le manuel homologué ; n’assumez pas que toutes les pompes tournent dans le sens horaire. Une pompe fonctionnant dans le sens inverse peut encore déplacer une partie de l’eau ; le débit de décharge ne suffit donc pas à prouver une rotation correcte. La vérification doit se faire selon une procédure d’homologation de mise en service qui protège les personnes, assure que la pompe respecte les exigences de fonctionnement et empêche une défaillance automatique...