Fuel Oil Supply/Booster Pump

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Pump cavitation and suction performance degradation
  Check: Verify NPSH available exceeds pump NPSH required (typically 1.5-4m for Bornemann pumps); inspect suction line for blockages, check fuel tank level, confirm no air leaks in inlet lines
• Area: Mechanical seal failure and fuel leakage
  Check: Visually inspect mechanical seal housing for external leaks; monitor seal cavity temperature; confirm proper seal material selection for fuel type (API-682 compliance); check seal lubrication reservoir level
• Area: Bearing wear and shaft misalignment
  Check: Monitor pump vibration and temperature at bearing housings; check shaft alignment with dial indicator (TIR tolerance typically <0.05mm); inspect bearing lubrication (oil level and condition) every 500-1000 hours
• Area: Rotor/stator degradation in progressive cavity pumps (EH, E2H, ES series)
  Check: Measure discharge pressure drop vs. specification; inspect rotor surface for scoring or wear (endoscopy if possible); verify stator elastomer material compatibility with fuel type; replace rotor/stator assembly when wear exceeds 10% of design tolerance
• Area: Fuel contamination and strainer blockage
  Check: Inspect inlet strainer/filter mesh condition monthly; measure pressure drop across strainer; verify fuel cleanliness per ISO 4406 code (recommend <18/16/13 for fuel pumps); change strainer element when pressure drop exceeds manufacturer specification (typically 0.3-0.5 bar)

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage
  Check: Check discharge point for leakage; normal is ~10 drops/minute at gland. Inspect seal surfaces for scoring or erosion under magnification. Measure leakage rate and compare to baseline. For packing-type seals, verify gland tension is not excessive.
• Area: Abnormal noise and vibration
  Check: Monitor airborne noise levels (normal <70 dBA for IMO pumps). Listen for grinding, whistling, or cavitation sounds during operation. Use vibration meter to establish baseline readings at motor/pump interface. Excessive noise may indicate cavitation, bearing wear, or misalignment.
• Area: Suction/discharge line corrosion and blockage
  Check: Visually inspect all pipes, fittings, and manifolds for corrosion, pitting, or scale buildup. Check inlet strainer for clogging (pressure differential indicates blockage). Verify valve positions (suction/discharge) are correct and check valves operate freely without sticking.
• Area: Bearing and rotor damage
  Check: Inspect pump casing exterior for cracks or seepage around bearing surfaces. Listen for grinding noise during manual shaft rotation (pump unpressurized). Verify rotor rotation is smooth with no binding. Check bearing lubrication points are adequately greased per maintenance schedule.
• Area: Motor/pump alignment and coupling integrity
  Check: Check coupling bolts for looseness (0.5mm runout maximum acceptable). Verify pump base bolts are tight on mounting surface. Use alignment laser to check motor-to-pump centerline (within 0.05mm TIR). Inspect coupling for cracks, wear, or contamination.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage at main shaft outlet (non-magnetic coupling variants)
  Check: Visual inspection for product leakage at mechanical seal chamber; check vent hole for deposits. Perform every 4 weeks per KRAL specifications. For high-temperature applications (>180°C), verify use of magnetic coupling variant to prevent seal degradation.
• Area: Bearing deterioration and excessive operating hours without replacement
  Check: Monitor operating hours; KRAL recommends bearing renewal every 20,000 operating hours maximum. Verify that pre-lubricated sealed external bearings remain sealed and show no signs of contamination. Check for unusual noise or vibration indicating bearing wear.
• Area: Suction-side pressure and cavitation due to filter/strainer blockage or excessive suction head
  Check: Check suction-side pressure gauge every 2 weeks minimum. Verify filter/strainer is not clogged using pressure differential indicator. Measure main discharge pressure with gauge. Confirm suction head is within specification (max atmospheric pressure minus vapor pressure). Excess cavitation causes noise, vibration, and mechanical damage.
• Area: Coupling misalignment causing noise, vibration, and bearing/shaft damage
  Check: Inspect shaft coupling alignment using hairline gauge and feeler gauge at multiple peripheral points. Check radial displacement (max tolerance per KRAL specs). Verify angular displacement with hairline gauge. Measure axial displacement using slide gauge. Misalignment is a primary cause of premature failure in screw pump installations.
• Area: Leakage vent hole blockage preventing normal drainage and causing seal chamber deposits
  Check: Insert flexible soft arbor into leakage vent hole to verify permeability. Check for deposits that prevent free draining. Clean if necessary. Blockage can lead to accumulation of product residue and premature mechanical seal failure. Perform inspection every maintenance cycle.

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Area: Mechanical seal wear and leakage (AFI series with SiC/SiC seals)
  Check: Visual inspection for external leaks at shaft seal area; pressure test inlet/outlet; check seal surface for scoring or discoloration
• Area: Spindle surface degradation and friction losses (all 3-screw types)
  Check: Measure hardness of spindles (must remain within specification); inspect polished surfaces for scratches/pitting using 10x magnification; check for particles in fluid
• Area: Pressure and flow deviation from nameplate (indicates internal wear)
  Check: Run differential pressure test: measure inlet vs. discharge pressure during operation; compare against max ratings (e.g., ALLFUEL max 40 bar differential); trending over time
• Area: Fluid contamination and viscosity out-of-spec (critical for pump life)
  Check: Lab analysis of fluid: viscosity (target range per model, e.g., AFI max 1,750 mm²/s); particle count ISO 4406; temperature monitoring (max 150°C for AFI/ALLFUEL)
• Area: Cavitation damage and abnormal vibration (indicates suction problems or misalignment)
  Check: Acoustic monitoring for high-frequency noise; ultrasonic testing of rotor surfaces; check inlet pressure (max inlet per model); verify pump alignment and mounting bolts

Typ-universelle Inspektionspunkte fuer Pumps (verifiziert, 2026-06).

• Screw rotor scoring
• Seal leakage
• Low suction from blocked filter

• Internal leakage
• Relief valve drift
• Coupling wear

• Mechanical face seal leakage after 8,000-12,000 operating hours
• Impeller erosion due to cavitation at insufficient NPSH
• Shaft bearing wear after 15,000-20,000 hours
• Coupling misalignment causes vibration and premature bearing wear

• Mechanical face seal leakage after 8,000-12,000 operating hours
• Impeller erosion due to cavitation at insufficient NPSH
• Shaft bearing wear after 15,000-20,000 hours
• Coupling misalignment causes vibration and premature bearing wear

• Screw element wear
• Pressure fluctuations
• Seal failure
• Viscosity control issues