2935053613 ac classzero2013 brochure lr

7/29/2019 2935053613 AC ClassZero2013 Brochure LR

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Atlas Copco | First in oil-free air technology

Customers prefer oil-free


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Class

01234

Oil-free compressed air is used in all kinds of

industries where air quality is important for

the end-product and the production process.

These applications include food and beverage processing,

harmaceutical manufacturing and packaging, chemical

nd petrochemical processing, semiconductor and

lectronics manufacturing, the medical sector, automotive

aint spraying, textile manufacturing and many more.

Atlas Copco Class 0 =Zero oilAtlas Copco asked the TV to type-testits range of oil-free air compressors. Theywere submitted to the most rigorous testingmethodologies available. All possible oilforms were measured across a wide rangeof temperatures and pressures.

The TV found no traces of oil in theoutput air stream. Atlas Copco hasthereby become the first compressormanufacturer to receive certificationfor the industry standard of air purity:ISO 8573-1 ed 3 Class 0 for oil content.

ISO 8573-1 (2010) Class 0eliminates your riskOnly oil-free air compressors deliver 100%oil-free air. We developed our oil-free aircompressors especially for applicationsdemanding the highest levels ofpurity. Whether your activities are inpharmaceutical production, food processing,critical electronics or in a similarly exactingindustry, zero oil means zero risk.

Zero risk of contamination. Zero risk ofdamaged or unsafe products, or of lossesdue to operational downtime. Above all,zero oil means zero risk of ruining your hard-earned reputation.

Go for the best standard:ISO 8573-1 (2010) Class 0.

Our compressors offer reliability andefficiency, reducing downtime andmaintenance and increasing yield. So evenindustries that are not as heavily reliant on100% clean air appreciate and seek out thevalue that this technology can add t o theirbusiness.

Your customers, your patients,plant managers, safety inspectors,electronic experts, car owners...they all choose oil-free.And you? Why would you choose oil-free?

For the past sixty years, Atlas Copcohas been pioneering the developmentof oil-free air technology, resulting in arange of oil-free air compressors designedspecifically for applications that can makeno compromise when it comes to clean,100% oil-free air.

By maintaining and strengthening itsworld-leading position through continuousresearch and development, Atlas Copco wasable to achieve a new milestone in set tingthe standard for air purity: it was the firstmanufacturer to be awarded ISO 8573-1,ed3. 2012, Class 0, for oil content.

Why Class O?Industries such as pharmaceuticals,food and beverages, electronics andtextiles need technology that excludesany risk of contamination, and the severeconsequences that can follow: spoiled orunsafe products, production downtime,or costly product re calls and legal issues,which can damage their brand andreputation.

They therefore look to ISO 8573-1 (2010)certification, which establishes acomprehensive classification andmeasurement methodology in which Class 0represents the best possible air quality.

This is what brings them back toAtlas Copco time after time, because yourcustomers deserve the best.

SO 8573-1 Class 0: 100% pure, clean air

What is the TV?The Technische berwachungsVerein(Technical Monitoring Association) is anindependent, international organizationspecializing in evaluating the safety andquality of products. The TV is recognizedworldwide for its independence,neutrality, p rofessional expertise andstrict standards.

Concentration total oil(aerosol, liquid, vapour) mg/m3

As specified by the equipmentuser or supplier and morestringent than Class 1

0.01

0.1

1

5


3/5

1

2

1

1

2

2

ISO 8573-1 Class 0oil-free, tested without compromise

ISO 8573-1 Class 0: 100% pure, clean air

he 1991 edition of the ISO 8573-1 standardstablished five classes of air purity, 1-5,ith Class 1 being the purest. However

n oil content, only oil aerosols and liquidsere taken into consideration. Below 35C5F), vapors could be ignored.

ater, higher levels of air purity wereonsidered necessary for criticalpplications such as pharmaceuticals, foodocessing and the manufacture of criticalectronic components.

So in 2001 the standard was revised.A higher Class of air purity was added:ISO 8573-1 class 0. In addition,measurements now cover all three formsof oil contamination aerosols, vapourand liquid providing a true picture of airquality.

The 2010 edition of the standard confirmedthe oil classification introduced in 2001. Weat Atlas Copco have made a point of stayingabreast of these developments and haveacquired the certification according to thislatest standard.

What are the main differences betweenhe first ISO 8573-1, ed 1, 1991 and the later versions?

Aerosols - Minute droplets of oil suspendedin the air stream

Wall flow - Oil in liquid form,which creeps along the pipe wall

Vapors or oil mist - Vaporised oilin a cloud form

What are the tests required to qualifyfor ISO 8573-1 Class 0?The Part 2 test measures aerosols andliquids. Testing can be done through partialflow (B2) or full flow (B1) methods (see nextpage). The Part 5 test measures vapors only.

Both parts are necessary to obtain ISO 8573Class 0 certification. This means that allthree forms of oil contamination aerosol,vapor and liquid have to be measured.

Both methods are acceptable for aerosoland liquid measurement according to ISO8573 Part 2.

The B2 method samples only the centerof the air flow. Oil aerosols are registeredbut oil that sticks to the pipe wall (wallflow) is not detected. Most air compressormanufacturers still prefer this less stringentmethod.

The B1 method examines the entire airflow to measure both aerosols and wallflow. This comprehensive test methodwas used on the Atlas Copco oil-free aircompressors. Even so, no traces of oil werefound in the output air stream.

Even with the most comprehensive test method,no traces of oil were found

Full flow testing method (B1)

Partial flow testing method (B2)


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0 10 20 30 40 C

0 10 20 30 40 C

32 50 68 8 6 104 F

32 50 68 8 6 104 F

2

1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

0.2

0

103

102

Choose risk-free,Choose oil-free.

his solution is often referred to asechnically oil-free air. However, even

nder optimum conditions and with severalages of oil removal, the air quality withgard to oil is suspect.

With oil-injected compressors there willways be a risk of contamination and the

ossibility of severe consequences for theusiness.

With Atlas Copcos oil-free air compressors,oure choosing for zero risks, as oil-free air100% guaranteed oil-free.

Can oil-injected compressors(*) with oilemoval filters deliver oil-free air?

One aspect influencing the efficiency andpurity of air systems is temperature. Whenusing oil-injected compressors with oil removalfilters, oil carryover through filter mediaincreases exponentially according to thetemperature at the filtration interface.

Filter performance is often specified at 20C(68F). If the ambient temperature in thecompressor room increases to 30C (86F),the compressor outlet temperature could be40C (104F) with the oil carryover 20 timesthe specified value. Such temperatures are notunusual even in colder countries, where thecompressor room temperature is substantiallyhigher than that outside.

Temperatures also cause an increase in thevapor content of the air, which can carrythrough to the end product. Moreover,high temperatures shorten the lifetimeof activated carbon filters. An increasein temperature from 20C (68F) to 40C(104F) can cut filter lifetime from 1000hours to about 50 hours, which means thatthe filter needs to be changed with every threedays of operation. Even worse, the activatedcarbon filter does not warn the user when it issaturated. It will simply allow oil to pass on toprocesses.

For Atlas Copcos oil-free air compressors, airquality is independent of temperature. Thiswas demonstrated by the TV test whichshowed no traces of oil at temperatures of

20C (68F), 40C (104F) and 50C (122F).

When ambient temperature rises,oil-filtering drops out.

Oilresiduesppm

Hours

Temperature of compressor C

Prefilter

Oil filterhigh efficiency

Temperature at adsorption

Not usableat filtration

temperaturesabove

40C (104F)

ActivatedCarbon filter

lifetime

Customers preferenvironmental-friendlyWith Atlas Copcos oil-free air technology,leaks and energy waste are minimized.Also, the need for condensate treatmentis eliminated. The amount of lubricatingoil required is a fraction of the quantity inoil-injected compressors. This means youcan safeguard the environment and bettercomply with international regulations.

Investors adore oil-freeArent oil-free air compressors moreexpensive? Not if you look at total costof ownership. Atlas Copco oil-free airtechnology reduces expenditures infour ways: by avoiding expensive filterreplacements, cutting maintenance costsand costs of treating oily condensate, andavoiding the costs of extra energy needed tocombat pressure drop in filters.

These costs, although not apparent atthe time of purchase, are very high andcontribute substantially to the total cost ofownership.

Moreover, as Atlas Copcos oil-free aircompressors eliminate the risk of acontaminated end-product, productiondowntime and damaged reputation, Class 0compressors are well worth the investment.

What about oil contamination in ambient air?Ambient air has very small traces of oilcoming from vehicles and industrial sources.However, in contaminated areas, oil contentdoes not normally exceed 0.003 mg/m3.

This is borne out by tests conducted by theTV near a factory with heavy machiningactivity (including turning, milling, grindingand drilling). Heavy vehicular traffic and agarbage incinerator were in the vicinity.

Aspirated by an oil-free air compressor,this extremely low level of atmospheric oilis washed away by the condensate in theintercooler and aftercooler, resulting in pureoil-free air for your process.

) Oil-injected compressors are sometimeslled lubricated, coolant cooled or contactoled compressors.

aution : Oils designated as Food Gradels are considered by some users as edibles and hence completely safe. In reality,ntamination with these oils can have arious health impact on consumers.

SO 8573-1 Class 0: 100% pure, clean air

Oil is injected Oil separator

Oilcontent:Typically

0- 0.003mg/m3

S ta ge 1 O il i s p ar tl y removed

Aftercooler *

IntercoolerOil content:Typically

0- 0.003mg/m3

Stage 2 Aftercooler Oil content: Class ZERO

0 mg/m3

* If lowambient temperature+cleanfilters= Class2edition2010 (0.1mg/m 3)If highambient temperature+saturatedfilters= Class3edition2010 (1 mg/m3)

Stage 1

Oil contentOil removal filters

Z Oil-free rotary screw compressor

Oil-injected compressor with filters


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