Kaeser Booster

Initial pressure up to 13 bar - Final pressure up to 45 barDelivery: 0.28 to 18 m3/min

Boosters

N Series

Why do we need a booster?

The ability to offer compressed air at various pressures makes itone of the most versatile energy sources available. Special applications require specifically tailored solutions in order toachieve optimum efficiency. Boosters are ideal for applications such as PET container pro-duction for example, where compressed air is required at a higherpressure than the standard works or control air at particularpoints in the manufacturing process. In such instances, it is moreeconomical to use the existing works air and boost it to the higherpressure with a small local compressor, rather than to operatethe whole compressed air system at the higher pressure.Regulating the pressure of a high pressure network to suit low-pressure applications (which account for most air usage) issimply a waste of money.

KAESER offers a comprehensive range of high-performance reciprocating compressors that are able to boost compressed airfrom a screw compressor up to pressures as high as 45 bar(g).These machines are perfectly matched for use with KAESERKOMPRESSOREN’s extensive range of screw compressors andSIGMA PET Air systems.

Rotary Screw Compressor High pressure air receiverAir receiver Booster

Compressed air system with booster up to 45 bar

High pressure refrigeration dryer

Pre-filter

Air tools

Schematic illustration

High pressuremicro-filter

Compressed airnetwork at 45 bar

Further information is also available in our SIGMA PET AIR brochure: P-200

Low pressure networkup to 13 bar

KAESER compressorblockDesigned and manufactured byKAESER, the high-pressure com-pressor blocks are available as two orthree cylinder models and operate atlow speed to ensure years of reliableand efficient service.

Precision cylinderEvery KAESER booster is equippedwith super-precision cylinders, eachfinished by a special process toensure minimum oil consumption andnegligible wear for maximumdurability.

Low temperaturesThree-cylinder models are equippedwith a fan-assisted after-cooler toensure lowest possible compressed airoutlet temperatures. A water-cooledafter-cooler version is available toachieve even lower “Delta T” results.

Premium efficiency motorHigh efficiency CEMEP EFF1 motorsconsume less power for greater outputand are standard throughout the rangeof KAESER compressors. Their lowoperating temperature is an addedadvantage, especially in environmentswith a high ambient temperature.

Select the bestIt is not uncommon for a booster to achieve a maximum pressure of 40 bar, but this once standard figure can now only be considered as second best. KAESER booster systems are in aclass of their own however, as they are the product of decades of experience in compressorsystem design and guarantee continuous delivery at 45 bar.

∆∆TT == 66 -77 KKeellvviinn

Continuous research anddevelopment KAESER KOMPRESSOREN’s strategy ofcontinuous research and developmentensures that every product providesexceptional performance and reliability.KAESER’s wide range of boosters forexample, features the very latestinnovations in reciprocating compressor technology. These include newly designed compressor blocks with oil pumps and a highefficiency cooler, both of which areessential for optimised high pressuresystem operation. In addition, designdetails such as pressurised oil lubrication and intensive cylinder cooling allow up to 100 percent duty cycles.

Effective up to 45 bar

Versatile Range

N 252 G to N 502 G, air-cooled

Low maintenance = Savings

The combination of the innovativeforced lubrication system, precisionmachining and high qualitycomponents ensures minimal maintenance requirement.

Efficient air cooler

Highly efficient and maintenance-free, the cooler on two-cylindercompressors achieves very lowcompressed air discharge temperatures.

Anti-vibration mounts

For vibration-free and quietoperation the machine can bemounted either on rubber feet 1 ...

Gas compression

Upon request, modified versionsof N-series systems are availablefor compression of nitrogen andhelium.

Premium efficiency motor

Eff1-rated motors consume lesspower for greater output and provide outstanding efficiency.

Ensured safety

Oil pressure, cylinder head temperatures and air dischargetemperatures are continuouslymonitored on models N 252 G toN 1401 G. The safety shut-downsequence is initiated via alarmsignals.

Start-Control

The ‘Start Control’ provides reliable booster monitoring andcontrol and also reduces thestarting load.

Manual belt tensioning

Quick and easy adjustmentmaintains optimum power transmission on single- and two-cylinder boosters.

Optimum lubrication

Equipped with an oil pump andoil filters, the new continuous oilfiltration system available forafter-cooler models N 252 G toN 1401 G extends the oil changeinterval to 2000 operating hours.

Automatic belt tensioning

On models N 753 G toN 1401 G constant spring pressure on the motor swing-frame keeps the drive belt at thecorrect tension to ensure virtuallymaintenance-free power transmission.

The N series sets the new standard

Nitrogen

Helium

1

2


N 753 G to N 2001 G, air-cooled or water-cooled after-cooler available

...or on anti-vibration mounts 2.

Investment costsMaintenance Costs

Energy saved withan Eff1 motor

Energy costs

Low demandThe smaller models in this range are best suited toapplications where low volumes of air are neededat up to 40 bar pressure. These compressors areequipped with one- or two-cylinder compressorblocks and are driven by high efficiency motorswith up to 4 kW capacity. The quality of theseunits is second to none as all compressor blocksare designed, manufactured and assembled byKAESER.

Medium to large demandWhen greater volumes of air are needed at pressures upto 45 bar then the larger of the KAESER booster modelsare the natural choice. The core of these “power houses”is the high-precision, two- or three-cylinder compressorblock with specially finished high quality cylinders andpremium efficiency Eff1 motors providing capacities upto 45 kW. The manual (two-cylinder models) or automatic drive belt tensioning systems (three-cylindermodels) ensure constant efficient power transmission forreliable and economic operation.

According to application, air-cooled or water-cooledafter-cooler versions are available (N 253 G – N 502only air-cooled, from N 753 G air- or water-cooled after-cooler).

Air-cooled versions are equipped with a separate fan-assisted after-cooler to keep the temperature differentialbetween the inlet and compressed air (∆T) within closetolerances.

To ensure optimum cooling performance with a ∆T valueof only approximately 5 K even at high ambient tem-peratures, models N 753 to N 2001 can be equippedwith a water-cooled compressed air after-cooler.

Technical Specifications - Boosters

DimensionsWidth (W), Depth (D) and Height (H) - see adjacent table fordetails.

o Standard o Optional — Not available *) Effective delivery related to atmospheric inlet conditions at final pressure - Power supply: Compressor 400 V, 3 Ph, 50 Hz, Solenoid valves 230 V, 1 Ph, 50 Hz, standard from N 253-G with idle control and oil level monitoring, optional on N 60-G and N 153-G with switch cabinet.

5

7.5

10

13

5

5

7.5

7.5

10

10

13

13

5

7.5

7.5

10

10

13

13

5

7.5

7.5

10

10

13

13

5

5

7.5

7.5

10

10

10

13

13

25

35

35

35

15

25

15

35

15

40

20

40

25

20

35

20

40

20

45

25

25

35

25

40

25

45

15

25

15

35

15

35

40

35

45

0.28

0.39

0.52

0.69

0.69

0.46

1.08

0.68

1.40

0.93

1.80

1.3

1.05

1.57

1.41

2.41

2.05

3.04

2.72

1.55

2.50

2.34

3.54

3.20

4.91

4.19

2.3

2.02

3.52

2.92

4.73

4.11

3.95

5.4

5.09

60

60

60

60

150

150

150

150

150

150

150

150

250

250

250

250

250

250

250

350

350

350

350

350

350

350

500

500

500

500

500

500

500

500

500

2.2

2.2

2.2

2.2

2.2

4

2.2

4

2.2

4

4

4

7.5

7.5

11

7.5

11

7.5

11

11

11

15

11

15

11

15

11

15

11

15

11

15

18.5

15

18.5



N 753 G to N 2001 G, water-cooled

0.36

0.51

0.66

0.84

0.91

1.28

1.66

2.12

1.54

2.18

2.82

3.59

2.19

3.11

4.02

5.12

1300

1140

940

870

1300

1300

1140

1030

1100

920

870

870

2.94

4.16

5.38

6.85

Model

Inlet pressurebar

Final pressure

bar

Delivery

m3/min

Displacementl/min

Rated motorpower

kW

Compressorspeedrpm

withoutenclosuredB(A)

Theoretical inletvolumem3/min

No. ofcylinders

Cooler type

Air-cooled

Water-cooled

Air-cooled withseparate fan

Max. dimensionsAir-cooled model

W x D x H mm

Weightmax.

kg

D

D

D

5

7.5

10

13

5

7.5

10

13

25

35

45

45

25

35

45

45

4.73

6.93

7.65

9.76

6.82

9.26

9.63

12.12

1040

1040

880

830

1490

1310

1080

1000

22

30

30

30

30

37

37

37

6.21

8.80

9.64

11.60

8.95

11.11

11.86

13.97

7.5

10

10

13

30

35

45

45

10.5

14.2

11.7

14.3

1490

1490

1310

1180

45

45

45

45

12.6

16.4

14.4

16.5

5

5

7.5

10

10

25

20

20

12.1

9

13.4

17.9

2290

1910

1810

1810

30

37

37

37

13.7

11.5

13.4

19.9

1300

1300

1100

1040

N 660-GG

N 1153-GG

N 2253-GG

N 3351-GG

N 5502-GG

N 7753-GG

N 11100-GG

N 11400-GG

N 22001-GG

1040

660

1120

910

970

74

74

76

77

78

80

80

80

81

80

82

82

85

84

64

64

66

67

68

70

70

70

71

70

72

72

75

74

o

o

o

o

o

o

—

—

—

—

—

—

—

—

o

o

o

o

880 x 390 x 540

1030 x 640 x 620

1400 x 710 x 800

1620 x 1280 x 990

1410 x 730 x 820

1620 x 1280 x 990

1520 x 870 x 1000

1940 x 1650 x 1130

1560 x 870 x 1000

1940 x 1650 x 1130

1600 x 1040 x 1030

2420 x 1600 x 1350

2790 x 1010 x 1040

3130 x 1600 x 1350

1990 x 990 x 1020

2420 x 1600 x 1350

2790 x 1010 x 1040

3130 x 1600 x 1350

1990 x 990 x 1020

2420 x 1600 x 1350

2790 x 1010 x 1040

3130 x 1600 x 1350

1990 x 990 x 1020

2420 x 1600 x 1350

2790 x 1010 x 1040

3130 x 1600 x 1350

1990 x 990 x 1020

2420 x 1600 x 1350

65

100

200

390

285

475

390

660

460

730

740

1100

1080

1600

900

1260

1100

1620

940

1300

1140

1660

980

1340

1130

1650

970

1330

1

2

2

2

2

3

3

3

3

—

—

—

—

—

o

o

o

o The SIGMA PET AIR system is a complete turnkey package.See brochure P-200 for further details

H

W

H

W

W

H

with enclosuredB(A)

Sound pressure level

P-4

80ED

AUS.

5/0

6 S

peci

ficat

ions

are

sub

ject

to

chan

ge w

ithou

t no

tice

Different fields of application require different grades of air treatment

Oil vapour content ≤ 0.01 mg/m3, particle retention > 0.01 µm

Oil vapour content ≤ 5 mg/m3, particle retention > 5 µm

Oil vapour content ≤ 25 mg/m3, untreated

Sterile blowing air

Choose the required grade of treatment according to your field of application:

PET painting systems

Control air

Air treatment using a refrigeration dryer (+3 °C pressure dewpoint)

Solids Oil BacteriaWater

A

B

C

1

1

4

4

41

1

1

1<

<

<

Oil vapour content ≤ 0.003 mg/m3, particle retention > 0.01 µm, sterile, odourless and taste-free



A

B

C

D

E

F

Simple blowing air

Coarse filtration

No quality requirements

D

E

F

1

6

4

4

4-78

2

4

5

<

Examples: selection of treatment classes to ISO 8573-1

Explanation:

N=Booster

ED=ECO DRAINElectronic level-controlled condensate drain

HPRD=High pressure refrigeration dryer

FE=Micro-filter 0.01 ppmSeparates aerosol oils and solid particles >0.01 µm,oil content ≤0.01 mg/m3

FF=Micro-filter 0.001 ppmSeparates aerosol oils and solid particles >0.01 µm, oilcontent ≤0.001 mg/m3

FG=Activated carbon filterFor adsorption of oil vapours, oil vapour content≤0.003 mg/m3

AMCS= Air-main charging systemTo ensure constant system pressure

HPDC= High Pressure Decompression Chamber

Aquamat= Condensate treatment system

Contaminants:+ Solids -

+ Water/condensate -

+ Oil -

+ Bacteria -

Clas

s

<0.

1

Pressure dewpoint

(x=liquid water in mg/m3 )

–

–

–

–

–

0.1<

d<0.

5

100

100000

–

–

–

0.5<

d<1.0

1

1000

10000

–

–

–

–

–

–

1.0<

d<5.0

0

10

500

1000

20000

µm

–

–

–

–

–

< 5

< 40

–

–

mg/

m3

–

–

–

–

–

< 5

< 10

–

–

mg/m3

<0.01

<0.1

<1.0

<5.0

–

–

–

–

–

<-70 °C

<-40 °C

<-20 °C

<+ 3 °C

<+ 7 °C

<+ 10 °C

x <0.5

0.5<x < 5.0

5.0<x <10.0

0

1

2

3

4

5

6

7

8

9

Degree of filtration:

Solid particlesMax. no. of particles per m3 with size d (µm)

ISO

8573

-1 HumidityOverall

oil content

as specified by user

FG

FF

FE

EDHPDC

Air receiver

N

Aquamat

HPRD KA

ES

ER

AMCS

AMCS

AMCS

AMCS

KA

ES

ER

KA

ES

ER

KA

ES

ER

FST

KA

ES

ER

FBHPRDFilters

Air receiver

Installation for heavily fluctuating air demand

Compressed air supply from the low-pressure network; required compressed air quality at booster inlet to ISO 8573-1, otherwise a centrifugal water separator or air receiver with FC pre-filter necessary (particle separation >1 µm, remaining oil <1 mg/m3)

Moisture dependent on pressure dew point, low-pressure network and the booster compression ratio

Solids OilWater

2 4 31

2

1

2

KAESER KOMPRESSOREN GmbHP.O. Box 2143 – 96410 Coburg – GERMANY – Tel: +49 9561 640-0 – Fax: +49 9561 640130www.kaeser.com – e-mail: [email protected]

Kaeser Booster

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