Centrifugal Fan

• Impeller imbalance from dirt buildup
• Belt wear/slip
• Bearing failure
• Scroll casing corrosion

• Area: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
  Check: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
• Area: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
  Check: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
• Area: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
  Check: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
• Area: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
  Check: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
• Area: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
  Check: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
• Area: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
  Check: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
• Area: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
  Check: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
• Area: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation
  Check: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation

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

• Area: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
  Check: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
• Area: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
  Check: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
• Area: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
  Check: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
• Area: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
  Check: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
• Area: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
  Check: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
• Area: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
  Check: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
• Area: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
  Check: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
• Area: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation
  Check: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation

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

• Area: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
  Check: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
• Area: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
  Check: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
• Area: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
  Check: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
• Area: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
  Check: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
• Area: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
  Check: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
• Area: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
  Check: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
• Area: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
  Check: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
• Area: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation
  Check: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation

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

• Area: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
  Check: Inspect impeller and blades for corrosion, erosion, fouling (salt, grease, dust), and mechanical damage; re-balance if needed
• Area: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
  Check: Check bearing condition and lubrication intervals; replace grease or oil per manufacturer schedule; monitor for abnormal noise or vibration
• Area: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
  Check: Verify belt tension and belt/pulley wear on belt-driven variants (CAL); replace belts if frayed, cracked or elongated
• Area: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
  Check: Inspect shaft seals and housing welds/flanges for air leakage and corrosion, especially in saline marine atmospheres
• Area: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
  Check: Test motor insulation resistance (megger test) and check electrical connections, terminal boxes and cable glands for moisture ingress
• Area: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
  Check: Confirm ATEX/EX integrity: check non-sparking tip clearance between impeller and housing; verify all certification labels remain legible and undamaged
• Area: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
  Check: Inspect vibration isolators, flexible inlet/outlet connections, and mounting bolts for fatigue, cracking or loosening
• Area: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation
  Check: Verify airflow performance against commissioning baseline (measure flow and pressure) to detect fouling-related performance degradation

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or
  Check: Corrosion check: Inspect impeller, housing, and shaft for salt water corrosion, pitting, and paint/coating damage — especially after voyages in high-humidity or salt-spray environments
• Area: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacture
  Check: Bearing condition: Check for unusual noise, vibration, excessive temperature rise, and lubricant condition; re-grease or replace sealed bearings per manufacturer intervals
• Area: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
  Check: Impeller balance and blade integrity: Inspect blades for fouling, erosion, cracks, or deposits; clean and re-balance if vibration levels exceed ISO 10816 limits
• Area: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, o
  Check: Motor insulation and electrical connections: Measure insulation resistance (Megger test) on motor windings; inspect terminal connections for moisture ingress, oxidation, or loose contacts
• Area: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degrada
  Check: Belt drive / coupling inspection (where applicable): Check belt tension, wear, and alignment on belt-driven units; inspect flexible couplings for rubber degradation or misalignment
• Area: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and over
  Check: Filter and inlet screen cleaning: Remove and clean inlet protective screens or filters; replace if permanently fouled to prevent restriction of airflow and overloading
• Area: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce syste
  Check: Housing and ductwork seal integrity: Check gaskets, bolted flanges, and flexible connections for air leaks, deformation, or loosened fasteners that reduce system efficiency
• Area: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after
  Check: Vibration and mounting inspection: Verify anti-vibration mounts are intact and not hardened/cracked; check all hold-down bolts for tightness, particularly after heavy weather or shock loads

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

• Area: Impeller inspection: check for corrosion, erosion, fouling deposits, cracks, and dynamic balance; re-balance or replace if deviations exceed ISO 1940-1 toleranc
  Check: Impeller inspection: check for corrosion, erosion, fouling deposits, cracks, and dynamic balance; re-balance or replace if deviations exceed ISO 1940-1 tolerances
• Area: Bearing inspection and lubrication: verify bearing temperature and vibration levels; replace grease in non-sealed bearings at intervals specified by manufacture
  Check: Bearing inspection and lubrication: verify bearing temperature and vibration levels; replace grease in non-sealed bearings at intervals specified by manufacturer; check for unusual noise indicating wear
• Area: Belt drive inspection (GT-3/GT-5): check belt tension, alignment, and wear; inspect pulleys for grooves or cracks; replace belts in sets to maintain balanced lo
  Check: Belt drive inspection (GT-3/GT-5): check belt tension, alignment, and wear; inspect pulleys for grooves or cracks; replace belts in sets to maintain balanced loading
• Area: Shaft seal and corrosion check: inspect shaft seals for leakage; verify anti-corrosion shaft coating integrity, especially in saltwater/humid marine environment
  Check: Shaft seal and corrosion check: inspect shaft seals for leakage; verify anti-corrosion shaft coating integrity, especially in saltwater/humid marine environments
• Area: Motor and electrical connections: check motor insulation resistance (megohm test), terminal tightness, cable gland integrity, and IP55/ATEX certification compli
  Check: Motor and electrical connections: check motor insulation resistance (megohm test), terminal tightness, cable gland integrity, and IP55/ATEX certification compliance for explosion-proof variants
• Area: Casing and access hatches: inspect casing for corrosion, especially weld seams and Pittsburgh folds; verify access hatch seals are intact and hatches secure ful
  Check: Casing and access hatches: inspect casing for corrosion, especially weld seams and Pittsburgh folds; verify access hatch seals are intact and hatches secure fully
• Area: Vibration and noise analysis: measure and record vibration signature at each maintenance interval; compare to baseline to detect early bearing or impeller degra
  Check: Vibration and noise analysis: measure and record vibration signature at each maintenance interval; compare to baseline to detect early bearing or impeller degradation
• Area: Inlet/outlet ductwork and dampers: inspect flexible connections for cracks; verify damper actuators operate freely; check for duct corrosion or blockage that co
  Check: Inlet/outlet ductwork and dampers: inspect flexible connections for cracks; verify damper actuators operate freely; check for duct corrosion or blockage that could cause pressure imbalance

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

• Area: Impeller inspection: check for corrosion, erosion, fouling deposits, cracks, and dynamic balance; re-balance or replace if deviations exceed ISO 1940-1 toleranc
  Check: Impeller inspection: check for corrosion, erosion, fouling deposits, cracks, and dynamic balance; re-balance or replace if deviations exceed ISO 1940-1 tolerances
• Area: Bearing inspection and lubrication: verify bearing temperature and vibration levels; replace grease in non-sealed bearings at intervals specified by manufacture
  Check: Bearing inspection and lubrication: verify bearing temperature and vibration levels; replace grease in non-sealed bearings at intervals specified by manufacturer; check for unusual noise indicating wear
• Area: Belt drive inspection (GT-3/GT-5): check belt tension, alignment, and wear; inspect pulleys for grooves or cracks; replace belts in sets to maintain balanced lo
  Check: Belt drive inspection (GT-3/GT-5): check belt tension, alignment, and wear; inspect pulleys for grooves or cracks; replace belts in sets to maintain balanced loading
• Area: Shaft seal and corrosion check: inspect shaft seals for leakage; verify anti-corrosion shaft coating integrity, especially in saltwater/humid marine environment
  Check: Shaft seal and corrosion check: inspect shaft seals for leakage; verify anti-corrosion shaft coating integrity, especially in saltwater/humid marine environments
• Area: Motor and electrical connections: check motor insulation resistance (megohm test), terminal tightness, cable gland integrity, and IP55/ATEX certification compli
  Check: Motor and electrical connections: check motor insulation resistance (megohm test), terminal tightness, cable gland integrity, and IP55/ATEX certification compliance for explosion-proof variants
• Area: Casing and access hatches: inspect casing for corrosion, especially weld seams and Pittsburgh folds; verify access hatch seals are intact and hatches secure ful
  Check: Casing and access hatches: inspect casing for corrosion, especially weld seams and Pittsburgh folds; verify access hatch seals are intact and hatches secure fully
• Area: Vibration and noise analysis: measure and record vibration signature at each maintenance interval; compare to baseline to detect early bearing or impeller degra
  Check: Vibration and noise analysis: measure and record vibration signature at each maintenance interval; compare to baseline to detect early bearing or impeller degradation
• Area: Inlet/outlet ductwork and dampers: inspect flexible connections for cracks; verify damper actuators operate freely; check for duct corrosion or blockage that co
  Check: Inlet/outlet ductwork and dampers: inspect flexible connections for cracks; verify damper actuators operate freely; check for duct corrosion or blockage that could cause pressure imbalance