DIESEL FUELS & DIESEL FUEL SYSTEMS

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Diesel Fuels & Diesel Fuel SystemsApplication and Installation GuideTypical Distillate Fuel CentrifugeSystemFigure 9Centrifuge seal water and controlair requirements must be specifiedby the centrifuge manufacturer.Sample PointsThe centrifuge operating efficiencyis checked by drawing samples fromboth sides of the centrifuge.Suction StrainerInstall a simplex strainer ahead ofthe centrifuge supply pump and usea stainless steel basket withperforations sized nominally at 0.8mm (0.03125 in) to protect thepump. The strainer body is normallymanufactured from cast iron orbronze.Centrifuge Supply PumpMount an electric motor drivensupply pump separately from thecentrifuge and size it appropriatelyfor the centrifuge flow. Thefollowing pump characteristics areprovided for guidance:• Operating pressure - to suitconditions of piping system• Operating fluid temperature -38°C (100°F)Page 28©2005 Caterpillar®All rights reserved.
Application and Installation GuideDiesel Fuels & Diesel Fuel Systems• Viscosity for sizing pumpmotor - 500 cStCentrifuge Fuel HeaterThe heater is sized using the pumpcapacity and the temperature riserequired between the settling tankand the final centrifuge. The heatershould be thermostatically controlledand set to maintain fuel temperatureto the centrifuge within ± 2°C (±4°F). The maximum preheatingtemperature for distillate fuel is 40°to 50°C (104° to 122°F).©2005 Caterpillar®All rights reserved. Page 29
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DIESEL FUELS & DIESEL FUEL SYSTEMS

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