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Library› Engine Room› Separators & Purifiers› Fuel Oil Separator› GEA Westfalia unitrol 5000l/h MDO
GEA Westfalia

unitrol 5000l/h MDO

Fuel Oil Separator · Separators & Purifiers

Class-certified type (DNV register) · technical data sheet not yet verified

GEA Westfalia Separators & Purifiers. GEA Westfalia Marine Separators are self-cleaning centrifugal separators used for clarification and purification of fuel oil and lube oil on marine vessels. The OSD series (introduced 2000) and newer OSE eagleclass (2008/2010) feature 3-phase AC motor drive with centrifugal clutch and flat belt transmission. The OSE generation delivers 30% energy r

Specifications

Technical data.

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Separator TypeFuel Oil Separator
Throughput (l/h)5000
MediumMDO
Bowl Speed (1/min)6500
Inspection

Inspector Detail

Common issues

  • Bowl imbalance from incomplete sludge discharge, causing vibration and premature bearing wear
  • Gasket/O-ring hardening leading to bowl leakage past the sliding disc
  • Discharge/sludge valve wear causing incomplete or excessive sludge ejection
  • Friction clutch or gear unit wear causing slow bowl spin-up
  • Control system sensor faults (flow, temperature) leading to poor separation efficiency
  • Worn seal rings allowing contamination of the separated oil

Inspection checklist

  • Check bowl vibration and running noise at start-up and steady speed
  • Inspect discharge/sludge valve operation each shift or against the automatic cycle log
  • Check inlet/outlet oil temperature against the process setpoint
  • Inspect bowl gaskets and O-rings at scheduled overhaul
  • Check gear unit oil level and condition
  • Verify sludge tank level and discharge frequency against expected throughput
  • Inspect the friction clutch/brake for wear at overhaul

Service intervals

Bowl disassembly and cleaningper running hours and fouling rate, typically every 500-1000 hours - confirm against the maker's manual
Gasket and O-ring replacementat each major bowl overhaul
Gear unit oil changeper maker's schedule, typically annually
Friction clutch inspectionat major overhaul
Vibration/running checkeach watch or daily running check

Critical spares

  • Bowl gasket and O-ring set
  • Sliding disc/seal rings
  • Discharge valve seal kit
  • Gear unit oil
  • Friction clutch pads, if fitted
  • Bowl spindle bearings

Safety

  • The bowl is a high-speed rotating component - confirm full stop and lock-out before opening; residual energy can cause severe injury
  • Hot oil under pressure during operation and cleaning presents a scalding risk
  • Bowl imbalance from incorrect reassembly can cause violent vibration and structural damage - follow the maker's torque and assembly sequence exactly

Class survey

Fuel oil purifiers/clarifiers fall under Continuous Survey Machinery in most class schemes; overhaul intervals and records (bowl opening, disc stack condition, safety device tests) must be logged in the machinery maintenance system and are checked during CMS/CSM surveys.

Estimated lifetime: Main bearings and gear unit are typically rated in the order of 15,000-20,000 running hours before overhaul on separators of this class, subject to running conditions and lubrication quality - treat as indicative and confirm against the maker's manual.

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