Standard Quality Features Deliver Valuable Benefits … Screw Air Compressors 50-350 Horsepower Standard Quality Features Deliver Valuable Benefits • Triplex discharge end bearings

Rotary Screw Air Compressors50-350 Horsepower

Standard Quality Features Deliver Valuable Benefits• Triplex discharge end bearings• Full-flow fluid pump• Axial flow inlet housing• Warning and shutdown annunciator• 460 or 575 volt, 3-phase, 60hz, 1800 rpm motor• Full-voltage magnetic starter, mounted and wired,

460 volt (through QSI 750)• Flexible dropout coupling with OSHA guard• Heavy-duty structural steel base• Two-stage air/fluid separation• Full-flow, 12-micron fluid filter• Heavy-duty intake filter• Auto-dual control with modulation• Percent capacity gauge• Factory fill – QuinSyn-PG synthetic fluid

(food grade optional at no additional charge)• 5-degree approach aftercooler with pre-piped

moisture separator and trap• Package discharge check valve• Hourmeter

Safety devices• UL listed electrical controls• High pressure unload switch• High pressure relief valve• Dual probe, high air/fluid temperature

shutdown system• Control line filtration with auto drain• Power-on light• Emergency stop button• Safety oil fill cap

Quincy QSI®

See how Quincy Compressor can work for you.Call: 334.937.5900Nearest Distributor: 888-4-AIR-QCY (888.424.7729)E-mail: [email protected]: www.quincycompressor.com

Tr u e B l u e R e l i a b i l i t y SM

Unparalleled PerformanceMaximum acfm per horsepower

Engineered DurabilityTriplex bearing arrangementensures reliability

Energy EfficientQuincy Power$ync® reducesenergy expenses

True Blue ReliabilityFive and ten year airend warranties available

Tr u e B l u e R e l i a b i l i t y SM

Optional Equipment• Full metal canopy• Low sound canopy• Premium efficiency and TEFC motors*• Solid-state or Wye-Delta reduced

voltage starters• Salt water coolers• Lifting bails• Auto restart• Phase monitor• Lead/lag control• Load/no load control• Power$ync variable displacement

airend and electronic controls• Remote coolers• Systems package• Customized configurations

Performance rated in accordance with CAGI/PNEUROP PN2CPTC2 test code. Proper filtration must be used for breathing air applications to meet OSHA 29CFR1910

Quincy’s air/fluid separator designand engineered fluids combine to produce fluid make-up rates of less than 3 ppm and downstreamcarryover rates of 1 ppm or less.

All normal maintenance items areconveniently located at one end ofthe machine for easy serviceability.

Quincy uses a 12-micron absolutefluid filter with a special micro-fiberglass media to provide thebest protection for the airend and bearings.

The QSI line of compressors usesoversized aftercoolers with a 3 to 5 degree approach at standard conditions. This means more moisture is removed by the after-cooler, improving dryer efficiency.

Quincy QSI®

Rugged canopy with apowder coated finish reduces sound levels to as low as 73dBA.

Two control options make the QSI easy to operate.

©2000 Quincy Compressor a BFGoodrich Company BusinessAll rights reserved. Litho in U.S.A. (QSI001 01/01)

* Note: If a specific motor efficiency is required, please consult the factory.

SAE O-ring FittingsWe’ve designed the Quincy QSI with far

fewer potential leak points than other

compressors in its class. One such feature

is the use of castings in place of discharge

piping. Another is the use of SAE o-ring

fittings on all fluid pipe joints over 1/4" in

diameter. These connections are superior

to standard pipe fittings, and are used

extensively for trouble-free installation

and operation in the hydraulic and

fluid power industries.

Quincy Compressor proudly

publishes total package acfm

and power data that is measured

and reported in accordance with

CAGI/PNUEROP PN2CPTC2

guidelines. However, some manu-

facturers publish acfm capacity

based on bare airend or partial package performance

– which is not the same. Every Quincy QSI meets or

exceeds CAGI/PNUEROP PN2CPTC2 guidelines –

ensuring that you get every acfm that has been promised.

Diagnostic control diagram shows status of critical

filter elements, temperatures and motor shutdowns.

Flanged drive system up through QSI 750.

Axial flow inlethousing.

Generously sized coolers ensure reliableoperation in ambient temperatures ashigh as 115° F (46° C) with aftercooler

approach as low as 3° F (1.7° C).

Rugged QSI airend with triplexbearings for maximum efficiency and operating life.

Heavy-duty intake filter for quiet, trouble free

operation.

Quincy QSI®

Compressed Air Reliability

Every Quincy QSI features a direct coupling drive and C-faced motors witha flanged connection to the airend onmodels through the Quincy QSI 750.This flanged drive system ensures a permanent alignment and a simple drive system.

An oversized, heavy-duty inlet filter and oversized fluid and aftercoolers arestandard on the Quincy QSI. With theseand other standard features designed to work in harsh operating conditions,the Quincy QSI is truly one of the most reliable compressors available.

Unparalleled PerformanceThe Quincy QSI® rotary screw compressorcombines around-the-clock dependabilitywith one of the most efficient, positive displacement airends available. Oversizedrotors, low RPM’s, and the Power$ync®

advanced controller ensures maximum airproduction using minimum horsepower,which means bottom-line productivity.

Backed by an available five or ten yearairend warranty, the Quincy QSI featuresan exclusive Triplex bearing arrangement,a triple lip shaft seal, and boasts anairend life of over 130,000 hours. This is the standard of True Blue Reliabilitythat perpetuates the value of Quincy.

The Quincy QSI airend is the result ofover 30 years of proven performance andmachining expertise. Starting with astate-of-the-art rotor profile, each rotor is measured using a polar coordinatemeasuring machine – with an allottedtolerance of 0.0005 of an inch.

Beyond this highly efficient rotor profileand unparalleled precision manufacturingstandards, Quincy rotors are oversized –almost 62% larger than most competitors.And the Quincy QSI is designed to turnthese oversized rotors at a slow 1,800rpm. This means long compressor lifeand increased efficiency.

High-efficiency,Large Rotor Design

Gear Type Fluid Pump

Larger Rotors Turning SlowerAirend Durability Rotor diameter, length, and speed determine the acfm

that can be produced. Logically, thismeans that a smaller airend withsmaller rotors must turn faster than a larger airend with largerrotors to produce the same acfm.

Airend Efficiency Larger rotors turning slower produce more acfm

per brake horsepower. Typically, theclearance between rotors is known as the “leakage path.” Smaller rotorshave a much greater “leakage path”than larger rotors. In addition, the fasterthe rotors are turning, the greater thedrag coefficient. Combined with gear or belt friction, these smaller airendinefficiencies add up to increasedpower consumption.

The airend is the most expensive component of your compressor toreplace and it determines a majority of your operating costs. The bottom-line – the Quincy QSI oversized airend can save you thousands of dollars in maintenance and energy costs.

ROTOR DIAMETER

BH

P/1

00 C

FM

Larger Rotor/Greater Efficiency

Quincy’s Oversized Rotor

Competitor’s Rotor

Quincy’s oversized rotors are 62% larger

and ensure more acfm per bhp and

reduce power consumption.

As rotor diameter size increases, brake

horsepower per 100 acfm requirements

generally decline.

Triplex Bearings

Positive Closure Inlet Valve

Flexible DropoutCoupling

Standard NEMA Frame Motor

Engineered DurabilityAs you might expect, Quincy’s oversizedrotors allow for oversized bearings – over56% larger than most competitors. Butmore than oversized bearings, theQuincy QSI features an exclusive Triplexbearing arrangement. This superior“three bearing” arrangement is designed todeliver over 130,000 hours of operation,far exceeding the average life expectancyof competing compressors.

In addition, the Quincy QSI uses a positive displacement gear-type fluidpump to lubricate both the rotors andthe bearings. This pump is driven bythe rotor shaft, so as soon as the compressor starts, lubrication beginsinstantly. During unloaded operation, thepump works with the positive closureinlet valve allowing reservoir pressure tobe relieved – reducing unloaded brakehorsepower to as low as 13.5% of full load.

Triple Lip Shaft SealWith Scavenge Backto Airend

Axial Flow Inlet

Quincy Triplex Bearings

Competitor’s Bearings

Quincy’s Oversized Triplex Bearings

Quincy’s Triplex bearings are over 56% larger than most

competitors, delivering over 130,000 hours of operation.

Optional Control MethodsLoad/No Load This is a simple controlalternative. A switch on the control panelallows the choice between modulation andload/no load. In this mode, the compressordoes not modulate the inlet valve – the valveis either fully open or fully closed. Load/noload works with auto-dual control to turnthe compressor off during extended periodsof no demand. For systems that call forthis type of control, maximum efficiencyis gained by operating fully loaded, completely unloaded, or off.

Net$ync® “multiple machine network control”The next step in multiple machine controlis the Quincy Net$ync. This is an auxiliarycontrol unit for operating up to 12compressors in different control modes,based on the air demands of a particular system. In this system, the compressoroperates as an auto-demand machine, butthe pressure switch control that operatesthe shutdown delay timer is transferred to the remote controller. The Net$ync controller monitors plant air system pressure and stages the starting and stopping of compressors to satisfy the system demands.

Lead/Lag “multiple machine control”System demands that are variable, buthave consistent steps in their variation,can benefit from the Quincy QSI lead/lagcontrol option. This manual option allowsone of two different pressure controlsettings to be chosen for a given machine.If the demand for air is greater than thelead unit’s capability, the lag compressorwill automatically turn itself on until theexcess demand is satisfied. Again, workingwith the standard auto-dual control, the lag machine will time out and turnitself off after the demand dropped.With one compressor (or several) set aslead and the backup as lag, the backupcompressor will automatically startshould the primary compressor fail tooperate properly.

Quincy’s exclusive percentcapacity gauge details the compressor load level.When load levels are low,the Quincy QSI can be shut down with confidence,unlike competitivemachines that may be lefton-line because load levels are unknown.

Standard Control PanelThe Quincy QSI is both reliable and functional. A selector switch on the controlpanel allows the user to select auto-dualcontrol or continuous run control. In theauto-dual mode, the compressor will load,unload, and modulate in response to systemdemand. If there is no system demand duringthe pre-set time delay, the compressor willshut down the main drive motor and, onair-cooled units, the fan motor. The compressor then goes into a “stand-by”mode and continues to monitor systempressure. As soon as the system pressuredrops, the controls will react by restartingthe compressor.

Continuous run operation can be selected if typical plant operations include frequent,brief periods of no air usage. In continuousrun, the control circuitry bypasses thetimer and the compressor does not shutdown. This control method preventsexcessive restarting and extends the motorlife in certain applications.

The standard compressor control panel hasa maintenance and shutdown annunciatorpanel to indicate various service and shut-down conditions. A graphic display showingthe compressor schematic has amber lightsto indicate the need to service the air filter,fluid filter, and separator element. Redlights indicate shutdown conditions forhigh air or fluid temperature, and drive orfan motor overload. These indicators aredesigned to allow easy remote sensing ofall service and shutdown conditions.

The control panel also includes:• Start button• Red mushroom stop button with twist lock• Power-on light• Lamp test button for annunciator panel• Discharge air pressure gauge• Percent capacity gauge• Hour meter• Compressor discharge temperature gauge

All gauges are 2-1/2", stainless steel backed and bezeled, with silicon-dampened dashpotmovements. They provide the reliability andservice life of liquid-filled gauges, withoutthe possibility of liquid leaks. Temperatureand pressure gauges have both English and metric scales.

Analog gauges offer status at a glance, while LED indication of warning andshutdown conditions gives superior condition indication for reliable operation.

Energy EfficientMaximizing the efficiencies of the QuincyQSI, the patented Quincy Power$ync® isthe most advanced electronic controller in the industry. Designed to monitorchanges in system air pressure as well as the rates of these changes, the QuincyPower$ync microprocessor works constantly – adjusting to efficiently meet the air demands of your system.

When the Quincy Power$ync senses aslow drop in pressure, the response rate isrecalibrated to allow a delayed responsebefore adding capacity. Often, the slightair demand causing the pressure drop isquickly satisfied – allowing the pressure to rise again without adding capacitywhich translates to higher power costs. In contrast, if the pressure drop is great,the Quincy Power$ync will add morecapacity than pressure alone would indicatenecessary – preventing excessive systempressure drops and production losses.

The Quincy Power$ync maintains peakefficiencies around the clock. Workingin conjunction with the airend liftvalves, compressor output is matchedto system demand. The part load efficiency of the lift valves, combinedwith the detailed monitoring of theQuincy Power$ync, deliver unmatchedefficiency and reliable performance.

As the most efficient design in variable displacement airends on the market – providing the ultimate in both part load efficiency andelectronic control – the Quincy Power$ync has been awarded multiplePatents. Together, the innovative Quincy QSI airend and the QuincyPower$ync dedicated microprocessor controller are changing the standards of efficiency. More acfm per horsepower and the ability to operate at peak efficiency 24 hours a day make this combinationyour most reliable bottom-line investment.

110%

100%

90%

80%

70%

60%

50%

ModulationTurn/Spiral valveVariable Speed DrivePower$ync lift valve

50% 60% 70% 80% 90% 100%

% of Full Load Power

% of Full Load Requirement

Power$ync's part load performance keeps efficiency high during 2nd and 3rd shifts. Unloaded bhp is 13.5 - 18% of full load bhp, the lowest in the industry.

Part Load Power RequirementsExtra Pressure by DesignEvery detail of the Quincy QSI hasbeen refined for maximum efficiencyand dependability. A one-piece castinlet housing allows intake air toenter axially to the rotors. TheQuincy QSI axial flow inlet actuallyimproves compressor efficiency byfive to seven percent over traditionalradial flow designs.

Quincy QSI500 acfm@110 psig100 hp

Quincy – 100 psigTo Your Plant

Competitors – 90 psigTo Your Plant

Competitors480 acfm@100 psig 100 hp

At Compressor 2.5 psig DropParticulate Filter

5 psig DropDryer

2.5 psig DropCoalescing Filter

110 psig

100 psig

90 psig

For Example – A QSI 500 delivers 500 acfm at 110 psig while other competitors produce only 480 acfm at a lower pressure of 100 psig. With a 10 psig pressure drop Quincy still can maintain 100 psig pressure to your plant while competition will give you only 90 psig.

More Capacity at Higher Pressure

The Quincy QSI has the unique feature that results

in maximum efficiency related to displacement. Air is

drawn into an inlet chamber ahead of the rotors,

causing the air to enter the rotor housing in an axial

direction for more efficient compression.

Technical Data Quincy QSI Series Compressors*@ 175 psig (12.07 BAR) – Full load pressure, 190 psig (13.10 BAR) Maximum pressure

Model QSI-245 HP QSI-370 HP QSI-500 HP QSI-750 HP QSI-1000 HP QSI-1250 HP

acfm @ 175 psig 227 351 468 712 951 1216M3/min @ 12.07 BAR 6.43 9.94 13.25 20.16 26.93 34.43hp 75 100 150 200 300 350

@ 210 psig (14.48 BAR) – Full load pressure, 225 psig (15.52 BAR) Maximum pressure

acfm @ 210 psig 224 346 461 702 933 –M3/min @ 14.48 BAR 6.35 9.80 13.05 19.88 26.42 –hp 75 125 150 250 300 –

Key: AC – Air-cooled Enclosed

* Power$ync not available on these models.Performance rated in accordance with CAGI/PNEUROP PN2CPTC2 test code. See Quincy QSI technical data sheets for exact dimensions. Proper filtration must be used for breathing air applications to meet OSHA 29CFR1910.

Technical Data Quincy QSI Series Compressors@ 110 psig (7.58 BAR) – Full load pressure, 125 psig (8.62 BAR), Maximum pressure

Model QSI-245 QSI-300 QSI-370 QSI-500 QSI-600 QSI-750 QSI-1000 QSI-1250 QSI-1500

acfm @ 110 psigFULL LOAD 245 288 370 500 623 757 1010 1264 1515M3/min @ 7.58 BAR 6.94 8.16 10.48 14.16 17.64 21.44 28.60 35.79 42.90Motor

hp 50 60 75 100 125 150 200 250 300rpm 1800 1800 1800 1800 1800 1800 1800 1800 1800

Rotor diameterIN 8.031 8.031 8.031 10.04 10.04 10.04 12.64 12.64 12.64MM 204 204 204 255 255 255 321 321 321

Compressor length (AC)IN 78 78 84 92 102 116 120 132 132MM 1981 1981 2134 2337 2591 2946 3048 3353 3353

Compressor width (AC)IN 48 48 52 56 56 68 76 80 80MM 1219 1219 1321 1422 1422 1727 1930 2032 2032

Compressor height (AC)IN 58.25 66.25 58.25 60.25 60.25 76.25 73.25 89.25 89.25MM 1480 1683 1480 1530 1530 1937 1861 2267 2267

Approximate weight (AC)LBS 3100 3200 3600 4400 4500 7500 9000 10300 10500KG 1409 1455 1636 2000 2045 3409 4091 4682 4773

Technical Data Quincy QSI Series Compressors@ 125 psig (8.62 BAR) – Full load pressure, 140 psig (9.65 BAR) Maximum pressure



hp 60 75 100 125 150 200 250 300 350rpm 1800 1800 1800 1800 1800 1800 1800 1800 1800


Quincy QSI Series – Air and Water Cooled Rotary Screw Air Compressors.50-350 hp/220-1515 acfm — Full Load Pressures @ 110, 125, 140, 175 and 210 psig

Technical Data Quincy QSI Series Compressors*@ 125 psig (8.62 BAR) – Full load pressure, 140 psig (9.65 BAR) Maximum pressure



hp 50 60 75 100 125 150 200 250 300rpm 1800 1800 1800 1800 1800 1800 1800 1800 1800


Compressor length (AC)IN 78 78 84 92 102 116 120 132 132MM 1981 1981 2134 2337 2591 2946 3048 3353 3353

Compressor width (AC)IN 48 48 52 56 56 68 76 80 80MM 1219 1219 1321 1422 1422 1727 1930 2032 2032

Compressor height (AC)IN 58.25 66.25 58.25 60.25 60.25 76.25 73.25 89.25 89.25MM 1480 1683 1480 1530 1530 1937 1861 2267 2267

Approximate weight (AC)LBS 3100 3200 3600 4400 4500 7500 9000 10300 10500KG 1409 1455 1636 2000 2045 3409 4091 4682 4773

110 psig Full Load 125 psig Full Load – Low Horsepower

High Pressure125 psig Full Load – High Capacity

Key: AC – Air-cooled Enclosed

QuinSyn IV® is a blended synthetic fluid designedfor operating in areas of high ambient temperaturesand/or contamination. It uses a PAO base stock toprovide excellent lubricating qualities, but isblended to be economically changed on a morefrequent basis when contaminant loads are high.

QuinSyn-XP® is a special POE synthetic fluiddesigned to operate under the harshest of conditions;pressures over 175 psig and fluid temperatures over225˚ F. It has a rated life of 12,000 hours at 100psig and 8,000 hours at 200 psig. QuinSyn-XP is our factory fill lubricant for Quincy QSI highpressure units and for our 10-year airend warranty.

QuinSyn® FluidsQuincy’s complete line of synthetic fluids areblended specifically for Quincy’s rotary screwcompressors. Quincy offers the following fluidsas factory fill.

QuinSyn-Plus® is a blended PAO/Ester fluidthat is highly varnish resistant and is completelydemulsible with water. QuinSyn-Plus has excellentnatural lubricity and has a low carry-over rate.

QuinSyn-PG® is a custom blended PolyalkleneGlycol/Ester fluid that is biodegradable.QuinSyn-PG is a standard factory fill fluid and offers the following benefits:

1. Varnish-free operation2. High viscosity index3. Excellent corrosion

protection4. Water holding capability5. Efficient cooling

QuinSyn-F® is a food grade fluid that can befactory filled at no extra charge. QuinSyn-F isdesigned for application that have incidentalcontact with food products.

True Blue ReliabilityWhen it comes to reliability, everyone is making the same promise. But when it comes to keeping the promise, Quincy Compressorstands alone. This is why we have introducedour exclusive five and ten year airend warrantiesthat cover both parts and labor. Reliability isabout confidence, performance, and trust – every day. Our warranty program is how we’rekeeping our promise of True Blue Reliability for the next five or ten years.

Expected fluid life at normal operation conditions

PremiumMineral Oil

QuinSyn-F,QuinSyn-IV

QuinSyn-Plus QuinSyn-PG

In H

ours

QuinSyn-XP

10,000

8,000

6,000

4,000

2,000

12,000

Standard Quality Features Deliver Valuable Benefits … Screw Air Compressors 50-350 Horsepower Standard Quality Features Deliver Valuable Benefits • Triplex discharge end bearings

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