Page 69: of Maritime Reporter Magazine (October 2001)

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Self-Cleaning Filter System Cuts Maintenance Costs

A routine oil and filter change in the and filter cartridges must be lugged up boat is in dock for maintenance, tight quarters of the engine room the narrow galley stairs for disposal and Boston Harbor Cruises found that Alfa onboard a boat is normally a messy and new oil and filters must be carried down Laval's Eliminator, an automatic self- awkward job. Buckets of used lube oil the stairs, all in the short time while the cleaning filter system installed in com-

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Boston Harbor Cruise Line's ferry •

Nora Vittoria.

Robert Tarrant, engineering manager of

Boston Harbor Cruise Lines, inspects the Elimi- nator Filter on the engine of one of the compa- ny's filters. bination with Cummins' Centinel sys- tem in its high-speed catamarans, saved $2,100 per engine per year in oil, filter and labor costs.

With a total of three boats, each with four engines, equipped with the Elimi- nator, Boston Harbor Cruises save a total of $25,200 per year. "After three years in operation, we are still seeing perfect oil analysis so extended engine life is an additional payoff," says

Robert Tarrant, engineering manager for the Boston Harbor Cruise Lines.

The Eliminator consists of an Alfa

Laval Moatti automatic, self-cleaning filter and an Alfa Laval disc-stack cen- trifuge in a single, compact integrated housing. These two sections comprise a complete engine-mounted oil cleaning system. The full-flow section utilizes a series of stainless steel mesh elements to filter the oil and protect the engine. A small portion of the filtered oil is used to backflush sections of these elements to prevent dirt from accumulating on the screen. The backflushed oil containing the impurities is then fed to the separa- tor section of the Eliminator, which is a very efficient disc-stacked centrifuge that cleans oil down to a two-micron level. All dirt removed in the full-flow

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Completely avoid the environmental issues, including delays and fines resulting from an oil sheen produced by even a small amount of stern tube oil leakage. 60 Maritime Reporter & Engineering News

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