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Aktuelle Neuigkeiten von Borra zu Produktlieferungen, technischen Anwendungen und Projektgeschichten aus dem Markt.

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

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 Pumps

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 Pumps

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...

Drehrichtung der Zentrifugalpumpe: Prüfen Sie dies vor der Inbetriebnahme
Borra Pumps

Drehrichtung der Zentrifugalpumpe: Prüfen Sie dies vor der Inbetriebnahme

Die richtige Drehrichtung der Zentrifugalpumpe ist die für die genaue Pumpeinheit festgelegte Richtung, bezogen auf den vom Hersteller angegebenen Referenzende. Bestätigen Sie die Pfeilrichtung des Gehäuses bzw. der Pumpeinheit und das genehmigte Handbuch; gehen Sie nicht davon aus, dass jede Pumpe im Uhrzeigersinn dreht. Eine rückwärtslaufende Pumpe kann dennoch etwas Wasser bewegen, daher beweist der Abflussstrom allein nicht die richtige Drehrichtung. Die Überprüfung muss einem genehmigten Inbetriebnahmeverfahren folgen, das die Sicherheit der Personen schützt, die Pumpe innerhalb der Betriebsanforderungen hält und eine automatische...