MMB 305
The Alfa Laval MMB 305 is a compact self‑cleaning centrifugal sludge separator that removes solid waste from marine sewage or bilge streams, delivering clarified water for discharge.
Components & Design
Component data being added…
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Common failures & inspection points
Paring disc, top disc, mud ports check for dull spots/wash-out; erosion depth >0.2 mm (bowl/cap) or >0.5 mm (other) = replacement.
Leaks at cover/bolted joints/mud outlet; gasket rings (EPDM) change every 6000–8000 h, original parts only.
Check vibration/noise; bearings change in pairs every 12000–16000 h, lubricate correctly; do not increase throughput during vibration.
Belts every 3000 h (tension per manufacturer), cracks/wear; coupling check for axial play (>0.5 mm = fault), corrosion.
Monitor current consumption nominal/actual; clean bowl during shutdown; check pre-filtration + lubrication; limit sludge volume.
Type-general inspection and maintenance points for this equipment category — not model-specific.
Service & Maintenance
Self-cleaning centrifugal; suitable for smaller vessels.
Suppliers & Spare Parts
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