Centrifugal fan – CNA/CNB
Novenco Marine & Offshore A/S Centrifugal fan – CNA/CNB — Low pressure centrifugal fans for Marine & Offshore applications. CNA for lighter duties; CNB for higher air volumes and pressures. Can be mounted in any position..
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation
Type-general inspection and maintenance points for this equipment category — not model-specific.
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