AXC Duct Fans

Inspect impeller blades for corrosion, erosion, or mechanical damage; re-balance dynamically if any material loss or deformation is detected.

Check motor bearings for abnormal noise, vibration, and temperature; lubricate or replace per manufacturer intervals (typically every 2,000–4,000 operating hours).

Verify motor insulation resistance (megger test) and check terminal connections for tightness and absence of moisture ingress.

Inspect casing, flanges, and mounting bolts for corrosion, cracks, or loosening; re-torque fasteners and touch up protective coating (hot-dip galvanizing or epoxy) as needed.

Check shaft seals and labyrinth rings for wear; ensure no ingress of seawater or condensate into the motor housing.

Test ATEX integrity on explosion-proof variants: verify flame-proof enclosure gaps, cable gland integrity, and earth bonding continuity.

Clean air inlet and outlet screens/grilles; remove accumulated dust, salt deposits, and biological fouling to prevent reduced airflow and overheating.

Functional test under load: verify airflow direction, measure current draw against nameplate rating, and confirm speed control (if fitted) operates across full range without hunting or overload.