Brazed Plate Heat Exchanger · Heat Exchangers
Alfa Laval CB200 Series — Alfa Laval Brazed & Fusion-Bonded Plate Heat Exchanger (CB / AlfaNova). Alfa Laval's brazed and fusion-bonded plate heat exchangers are compact, high-efficiency units for demanding marine and industrial applications. CB models employ stainless steel plates brazed with 100% copper in vacuum furnaces, while AlfaNova uses patented AlfaFusion technology combining all-stainless-steel construction (316) with stainless steel
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| Performance trend review (approach temp / pressure drop) | monthly to quarterly depending on service criticality |
|---|---|
| Strainer cleaning upstream | monthly to quarterly depending on water source |
| CIP chemical cleaning | condition-based, commonly every 6-24 months |
| Nameplate/material data verification against duty | at each major maintenance or whenever the unit's service is changed |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Pressure drop rise vs commissioning baseline | commonly used as a cleaning trigger around 20-40% above baseline - unit-specific, not a fixed figure |
|---|---|
| Approach temperature rise vs design | a sustained few-degree C rise above design is a typical fouling indicator |
| Core material corrosion evidence | any visible copper braze corrosion on a unit meant for raw seawater duty indicates the wrong core material was fitted, which is a limit in itself, not a numeric one |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
As a family of pressure-retaining heat exchangers, class attention is on correct material certification for the actual duty (especially seawater contact), pressure test records, and general piping/machinery survey coverage rather than a dedicated survey item, unless the unit serves a class-essential system.
Estimated lifetime: Not meaningfully expressed in running hours across this family - service life is governed by fouling/corrosion condition rather than a fixed schedule; correctly specified units commonly remain in service 15-25 years with regular cleaning.
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