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LS SeriesRotary Screw Air Compressors250 HP to 350 HPLS-25S250-350 HPThey go on,and on, and on.

SULLAIRSULLAIR: A COMPRWITH A FOCUUnchallenged leadershipFor decades, Sullair has been a leader inrotary screw technology. Our ability torespond to our customers’ needs, with new,cutting-edge advancements is solid evidenceof our leadership. Sullair compressor innovations include our encapsulated compressors,our energy efficient two-stage tandem compressors and our unprecedented 24KT 10-year air end warranty. Building on a solidbase of experience and innovation, Sullair’sleadership in rotary screw technology isunparalleled in the world today.About the cover.The Sullair LS-25S Series compressors aredesigned and built with lasting durability.Like this highway at dawn, they go on, andon, and on.2

RESSOR COMPANYUSED VISION.Focus on rotary screw technologySullair’s global reachSullair Corporation is one of the world’sleading authorities on rotary screw compression technology. Since it began manufacturing rotary screw compressors in 1965,Sullair has focused on this area of specialization. Sullair uses its extensive resourcesin Michigan City, Indiana to further developand advance rotary screw technology. Thecompany continues to compile a body ofresearch and expertise that is unparalleledin the field.Sullair serves the world marketplace. Inaddition to its manufacturing complex inthe U.S., Sullair has manufacturing facilities in China, Australia and France. Fromthese centers, Sullair coordinates a salesand service network that provides comprehensive product support to customersaround the world.ISO 9001Member3

COMPRESSORSTHE SULLAIR LRELIABILITY, PERFORMANCEContinuous dutyRotary screw dependabilitySullair Series LS compressors haveestablished themselves as outstanding inthe 250 to 350 horsepower range. Thesecompressors offer the inherent reliabilityof Sullair’s rotary screw design and alsoprovide continuous-duty performance.Components of every Sullair compressorhave been carefully selected to assurecomplete reliability.These LS models use a single-stage rotaryscrew air end, featuring Sullair’s ruggedbearing design: tapered roller bearings onthe discharge end and cylindrical rollerbearings on the inlet, for high load-carrying capacity. On standard models, the airend is warranted for a period of 5 years(1).On 24KT models, the air end iswarranted for 10 years(2).4(1)Sullair’s 5-year warranty includes motor, air/fluid receiver and cooler(s).“L” and “H” models only.(2)Sullair’s 24KT warranty includes 5-years on the motor, air/fluid receiverand cooler(s).

LS-25S SERIES.E, AND TIME PROVEN DESIGN.Lower maintenance costsBroad operating rangeAs a result of Sullair’s rugged, time-provendesign, the LS Series requires only minimum maintenance for optimum performance. There are no troublesome belts orexpensive bull gear arrangements to wearout or replace.LS-25S compressors, which are fluid lubricated and cooled, are available in 250 to350 horsepower, with capacities from 1075to 1675 acfm and pressure ratings of 100to 125 psig.5YEARSCOMPRESSORHEALTHASSURANCETEN YEARAIR ENDWARRANTY5

PACKAGE DESIGNTHE SULLAIR LS-25THE CORE OF YOUR COM➍ Heavy-duty air filterSuperior package designDesigned for continuous duty.Aftercooler, moisture separator and trap.Air-cooled or water-cooled models areavailable.Includes remote air intake connection.Protects premature failure of keycomponents.Extends separator, fluid filterand fluid life.➊ Sullair Supervisor Controller ➎ The reliable Sullair air endState-of-the-art technology.Four-line, full text display.Accurately monitors and controlsthe compressor.Computer-based controller allowssequencing of multiple compressorsand communication capability.Service and preventative maintenanceinformation built into the controller.Longer average bearing life, designed forup to 100,000 hours of service.➋ Multi-stage air/fluidseparationDual nested Optimizer separatorelements, reduce fluid carry-over to lessthan 1 ppm.Reduced carryover lowers make-upfluid costs.Pleated Optimizer elements lower initialpressure drop for greater efficiency andextend life of the elements.➊➌ Fiberglass fluid filterAircraft-quality media providesbetter filtration.Up to 20% more efficient thanconventional paper elements.Lengthens life of the compressor.6

5S COMPRESSORS.MPRESSED AIR SYSTEM.Bearing Fluid ReservoirsSelect one of these long-life fluids.Ensure fluid is available at startup.Extends air end life.Sullube is standard factory fill.5-year air end warranty.Biodegradable.One year or 8000 hour service life.Reduces fluid disposal costs.Premium efficient motor (Optional)Improved energy conservation.5-year warranty.Direct coupled design for extendedbearing life.250,000-hour insulation life.NEMA frame design.Premium efficient motor optional.Reduces fluid carryover.24KT is optional.Exclusive 10-year air end warranty.Eliminates annual fluid changes.Eliminates annual fluid disposal costs.Free fluid sampling and analysis programwith either fluid.Sullair’s Versatile Control SystemMatches output to demand.Stabilizes system pressure.Minimizes need for an air receiver.Extends package life.Spiral Valve Capacity Control(Optional)Lowers part-load operating costs.Reduces cycling duty on packagecomponents.➍➋➎Allows the compressor torun in modulation orload/no load operation.Dual control operationincludes automaticstart/stop.Spiral Valve (optional).➌Extends bearing life.7

FEATURESThe reliableSullair air endSullair’s air endexchange programIf your Sullair compressor requires areplacement air end, Sullair will provideone with updated components featuringthe latest technology. The replacement airend is factory warranted and is easy toinstall. If the replacement occurs duringthe warranty period, labor is also included.Decades of proven reliability aretestimony to the quality of theSullair air end.Although the principle of rotary screwcompression remains the same, Sullair iscontinually improving materials, engineering and design of its air endsand compressor packages.No loss of capacity or efficiencySullair air ends have only two movingparts: the asymmetrical profile rotors.Contact occurs only on a lubricatedpitchline, so wear is virtually eliminated.As a result, Sullair compressors do notlose capacity or efficiency.Longer air end lifeControlled pressurelubrication and BFR (Bearing FluidReservoirs) assure a reliable supply offluid to rotating elements.Lower operating costsDischarge port matches ratios of volumeand operating pressure for maximum efficiency. Axial air inlet avoids preheatinginlet air for further savings.8

Sullube Sullair’s standard long-lifecompressor fluidAir qualityis one of the bestin the industryWhile others can claim a low carryover of5 ppm, Sullair’s LS compressors offer acarryover rate less than 1 ppm— the lowest in the industry. Sullair’s MSS designuses a sump design, which allows use ofoversized dual nested separators.Environmentally compatibleSullube is a biodegradable fluid that isrecyclable. Low levels of Sullube carriedover in condensate may be accepted fordirect sewer disposal without additionalseparation/equipment. Contact localauthorities for approval.Fact: Factory replacement air ends are builtto the latest technology.Sullair OptimizerAir/Fluid Separator8,000-hour fluidA high-efficiencyseparator that willpay for itself(during the lifeof the separator)in reducedcompressor fluidcarryover andelectrical power consumption.Because Sullube can operate for three fullshifts for one year, labor related to fluidchange-out and associated downtime costsduring this time are virtually eliminated.Non-varnishingBecause of its unique chemicalformulation, Sullube will not varnish.Longer fluid lifeOil carryover ounces per 24 hoursConversionUnique additive package maintains desiredcharacteristics over a wide range of operating conditions for extended periods.6PPM18PM145POil Carryover oz./24 Hours1612PM104P83P62 PPPMM41 PPM200200400600800 1000 1200 1400 1600CFM9Fact: Thousands ofmunicipalities worldwide approve Sullube incondensate form to beacceptable for sewagedisposal.

FEATURES & OPTIONSSullairSupervisor Controller microprocessor controller24KT compressor fluid andthe 10-year warrantyCompatibleand userfriendly10-year compressor air-end warranty24KT fluid formulation is so revolutionary, Sullair is the only compressormanufacturer to offer this unprecedentedwarranty.This ntroller has a four-line, full text displayand an easy-to-read keypad.Sullair’s 24KT warranty includes 5-years on the motor,air/fluid receiver and cooler(s).Routine fluid disposal costs areeliminatedThere is no foreseeable end to the usefullife of 24KT fluid, when used accordingto Sullair recommendations. Fluid-relatedmaintenance costs are drastically reduced.Featuring: Constant readout of pressure andtemperature. On-demand readout of all operatingand maintenance conditions. Monitors key functions and safetyshutdowns. Power failure auto re-start. Dual control, provides automaticstart-stop operation. Lead-lag and sequencing withmultiple compressors. Service and preventative maintenanceschedule. “Run,” “Loaded” and “ConsumableParts” hours. Fault history with sensor readings. “Help” key provides built-in troubleshooting.24KT Fluid extends compressorcomponent life24KT is chemically inert and does notbreak down or varnish. It works clean.Filters, separators and coolers will notplug. Bearings last longer. Associatedlabor costs are also reduced.Compressor operates at peakperformanceConstant viscosity insures excellentlubrication to all rotating parts.Two-way communicationsRS 485 communications port allowsremote input of operating parameters andoutput of actual readings.10

Spiral Valvecuts energy costsdramatically100An outstanding optional feature ofLS compressors is Sullair’s uniquecapacity control system, which consistsof a spiral valve and an inlet butterflyvalve. This system delivers greatlyimproved part-load performance,especially when compared withcompressors having suction throttlingor load/no load controls.Compressed air volume is variedby rotating the spiral valve, which opensand closes by-pass ports in the stator,and returns air to suction rather thancompressing it. By matching compressordisplacement with output need, thisenergy-saving system uses up to 17%less power.90% OF BHP USED8070605040302010001020 30 40 50 60 70 80 90 100% OF FULL LOAD CAPACITYPart-load Capacity Control ComparisonsA rotary screw compressor with spiral control valve reducespower consumption as the compressor load drops. More importantly, it illustrates the substantial power savings at part loadwhen compared to other capacity control systems.In the past 25 years,Sullair has supplied overone and a half million gallons of 24KT fluid as a factory fill for its compressors.That’s the equivalent of300 tanker trucks. Actual Load/No Load * Suction Throttling Theoretical Load/No Load Variable Displacement(Spiral Valve)* Based on 1 gallon per cfm air storage.By-passPortsBy-passPortsSpiral Valve (withdrawnto show basic configuration)1124KT is based on siliconefluid (polydimethylsiloxane–PDMS), which posesno known hazard to theenvironment. PDMS is notclassified as a hazardouswaste and has demonstrated no adverse effects onanimal or plant life.