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     Alfa Laval Moatti

    Filtration solutions

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    Moatti self-cleaning filters

    Benefits

    • No disposal costs.

    • Large maintenanceintervals.

    • Low maintenance costs.• Increased oil lifetime.

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    Stops particles larger than mesh size.

    • Continuous backflushing.• Backflushed oil particles are trapped by

    the second stage filter (the diversion).

    • Accumulated contaminants are

    removed by periodic drain.

    • Maintenance interval > 12000 hours.

    Two Functions: Protection and Elimination

     Automatic filter with diversion

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    • Our standard filtration

    •  A01 10 µm absolute (*), 8 µm nominal

    •  A03 25 µm absolute (*), 10 µm nominal

    •  A05 35 µm absolute (*), 20 µm nominal

    •  A07 45 µm absolute (*), 30 µm nominal

    (*) Sphere passing mesh

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    Filtering elements

    Rib

    Filter mesh

    Filter frame

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    Depth Filter 

    • Not Cleanable

    Surface Filter 

    • Cleanable filter elements• Screen with definable

    mesh size

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    Technical information

    • Different filter media

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    Triangular mesh (dutch type):

    Poor clean ability, particles are blocked in angles

    •Bad access to surface, difficult to inspect andclean.

    Balance of efficiency and cleaning

    Easily cleaned by backflushing = Longest

    interval between manual cleaning

    full access to surface = Easily cleanedmanually + Easily inspected

    Higher manufacturing cost

    Candles

     AL Moatt idiscs

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    Central Coolingand Freshwater Production

    OilRecoveryandSludgeTreatment

     Aut omatic filter By-PassManual filter (optional)

    Lube Oil Treatment

    Fuel OilTreatment

    LO filter 

    FO filter 

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    Fuel Oil treatment system

    • Hot side

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    Fuel Oil treatment system

    • Cold side- Standard on FCM

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    HFO – Hot or Cold side

    High flow rateHightemperature

    Low viscosityClose to engine

    Better protection

    Hot side

    High viscosity

    Far from engine

    Risk ofcontamination

    Maybe extrafilter required

    Low flow rate

    Low temperature

    Lower pressure pulse

    Cold side

    Disadvantage Advantage

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    Benefits of continuous back flushing

    • Longer cleaning intervals• A low pressure drop over the filter elements, which furtherreduces the risk of cracking

    • Constant pressure drop over the filter 

    • Small amount of drain to discharge periodically. The use offiltered oil for the back flushing process also eliminates the needfor compressed air.

    The continuous back flushing of the filtersignificantly prevents the adhesion of retainedsolids to filter surfaces, which result in:

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    FCM - Main filter 

    • Filter installed mostly in one of thefollowing places:

    • Cold side – after the supply pumps

    • Hot side - after the heaters

     A protection of the engine and injectorsfrom potentially damaging particles

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    FCM - Filter configuration

    Standard• Automatic filter with manual standby

    filter, installed on cold side• Automatic drain at regular intervalls

    • Alarms for high pressure drop andstop of electric motor • Automatic drain of filter at high

    pressure drop alarm

    Option• Double automatic filter for double

    safe operation available as option

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    Fuel oil indicator Filters

    • The indicator filter is usually placed near the engines, toverify the good operation of the main fuel oil filter 

    • It’s mesh is larger than the main filter 

    • The filter is a manual filter 

    • Usually supplied by the engine maker 

    • Not suitable to mount on the FCM – since it should be

    close to the engine. Can be delivered loose.

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    Filter 

    Filter frame

    Back flushing

    Fuel Oil Out

    Fuel Oil in

    Drain

    Electric motor 

    Differentialpressureindicator switch

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    Filtering unit

    without Diversion

    Filteringelements

    Distributor 

    Sleeve

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    Filtering unitwith Diversion

    Filteringelement

    Distributor 

    SleeveDerivation

    Full Flow

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    Working Principle

    Filtering Element

    Operating principle - Phase 1

    Filtration in the full-flow

    and diversion chambers

    Cleaning of

    the full flow

    chamber 

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    Operating principle - Phase 2

    Cleaning of the diversion chamber 

    Working PrincipleFiltering Element

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    Operating principle - Phase 1

    Cleaning of the

    full flow chamber 

     Automatic filter with diversion

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     Automatic filter with diversion

    Cleaning of the

    diversion chamber 

    Operating principle - Phase 2

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    Paper Filter cartridge :

    • High disposal costs

    • High downtime costs

    • Frequent maintenance

    (250 H)

    • Frequent oil changes

     Alfa Laval Moatti full flow filters

    combined with centrifuge

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    Customer demands :• Lower maintenance costs

    on the engine

    • Better engine protection• Lower downtime costs

    • Extend oil change intervals

    • Eliminate disposal costs

    • Increase Oil Lifetime

     Alfa Laval Moatti full flow filters

    combined with centrifuge

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    The Eliminator  

     A uniquecombination of afull flow automaticfilter and of acentrifuge to offer

    protection andcontaminantselimination.

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     A unique filtration system

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    The The Eliminator  is composed of:

    2- An AutomaticFull Flow Filter to protect your engine.

    1- A centrifuge on

    the backflushing

    of the Automatic Filter 

    to clean your oil.

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    The Eliminator  

    principle of operation

    Filter Outlet Filter Inlet

    Return to sump

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    The design of theautomatic full-flow

    Benefits Features of the Full Flow part of The Eliminator 

    • Disk type filtering elements with an

    aluminium armature and stainless steelmeshes.

    • Hydraulic motor to ensure continuousbackflushing.

    • Low and constant pressure drop acrossthe filter.

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    Design of the centrifuge

    Features:

    • Self driven by the backflushing pressure.

    • Composed of a new generation of AlfaLaval disk stack.

    • Removes particles down to and below 2µm.

    • Cleans the contaminated backflushed oil.

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    The Eliminator   ranges

    The 180 size, suitable for engines for which the

    output power is between 350 and 1500 Kw.

    The 160 size, suitable for engines for which the

    output power is between 50o and 1500 Kw.

    The 240 size, suitable for engines for which the

    output power is between 1500 and 3000 Kw.

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    Benefits of The Eliminator  

    • Eliminates costly cartridge filters and their related disposalcosts.

    • A better filtration system for prolonged oil life and betterprotection

    of your engine.

    • Less downtime hence fewer man-hours.• Payback period under 2 years.

     Advantages:

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    • Required maintenance for the Full Flow up to 12,000running hours on engines burning heavy fuel oil and atengine overhaul for engines burning diesel oil.

    • An adaptable system for easy retrofitting.

    • Required maintenance for the centrifuge up to 2,000hours, involving only the replacement of the sludgecollecting paper.

    Maintenance and setup

    Benefits of The Eliminator  

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    Case stories intro

    Why to they use Alfa LavalMoatti filters.

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    The Eliminator  

    self-cleaning filter system cuts maintenance

    costs onboard Boston Harbor Cruise ferries; By GregSchmelz, Alfa Laval

    • A routine oil and filter change is normally a messy and awkward job.

    • Boston Harbor Cruises found that Alfa Laval’s Eliminator  

    ,saved $2100 per engine per year in oil, filter and labor costs.

    • With a total of three boats, each with four engines, equipped with theEliminator, Boston Harbor Cruises save a total of $25,200 per year.

    •“After three years in operation, we are still seeing perfect oil analysisso extended engine life is an additional payoff,”

    •The only maintenance required is replacement of the sludgecollection paper in the separator.

    Case story

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    The majority of the savings are the result of reduced maintenance hours.

    With traditional cartridge filters, maintenance is performed every 250hours and takes 3 man hours per engine.

    On average, each boat with four engines requires 12 oil changes per year,totaling 144 man hours.

    In contrast, service on the Eliminator and the Centinel engine is requiredat 1 000-hour intervals and takes only 2 to 3 hours.

    Cummin’s Centinel system blends used oil with the fuel to be combustedin the power cylinders which allows the oil to be converted to usefulenergy in the diesel engines.

     Anything less than 100 ppm is not bad. We have not noticed any oilconsumption either,” comments Tarrant. “As a bonus, we expect to see18,000 to 20,000 hours of service before the engines need a majoroverhaul. The normal interval between overhauls for engines not equippedwith the Eliminator has been 9000 to 12,000 hours of service.”

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    “There are other intangible benefits with the Eliminator filter system,”

    adds Tarrant.

    With the Eliminator, we avoid the environmental issues involved with

    disposing of oil and filters and safety issues with employees handling

    and carrying wastes up the galley stairs.

    Each engine needs 35 gallons of oil and that means 35 gallons that has

    to go up and down the stairs.

    The only waste product with the Eliminator is one piece of paper and

    that is the filter. This frees up our maintenance crew to perform other

    duties on the boat.”

    Greg Schmelz, Key Account Manager, Diesel OEM, Alfa Laval Inc., Greenwood, Indiana

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    Item TraditionalCartridge FilterSystem

    Eliminator ™ FilterSystem andCentinel

    Savings withEliminator andCentinel

    Cartridge filters $1,080.00 $0 $1,080.00

    MaintenanceLabor 

    $576.00 $114.00 $462.00

    MaintenanceMaterial

    $0 $30.00 ($30.00)

    Oil Disposal $125.00 $0 $125.00

    *Fuel value of oi l - - $480.00

    Total savings peryear per engine

    $2,117.00

    *Cummins Centinel system blends used oil with the fuel to be combusted in the power cylinders which allows theoil to be converted to useful energy.