1

Industrial Centrifugal Fans:Centripal EU

2

The Centripal EU range has been designed by Fläkt Solyvent Ventec to become the new European Reference of Centrifugal fans in the Fläkt Woods Group.

The latest innovations are reflecting the 90 years of experience of Fläkt Solyvent Ventec, strongly recognised on the market for its high performance

characteristics, reaching up to 88% efficiency with airfoil blades.

The development of the range has enabled a high level of standardisation integrating all ancillaries and fittings, enabling fans to be delivered in short lead

times, with a maximum of flexibility.

Centripal EU Fans

3

Summary

General presentation

Fan and applications ................................................................................................................................................................................................................... 4

Key features of a centrifugal fan .................................................................................................................................................................................. 6

The different impeller types ............................................................................................................................................................................................... 8

ATEX norm and related fan types ......................................................................................................................................................................... 10

Small sizes concept:The range ........................................................................................................................................................................................................................................... 14

Fans for clean air applications

Medium pressures .................................................................................................................................................................................................................. 16

High pressures ............................................................................................................................................................................................................................ 18

Fans for dust-laden air applications

Medium pressures .................................................................................................................................................................................................................. 20

High pressures ............................................................................................................................................................................................................................ 24

Fans for heavily dust-laden air applications

Medium and high pressures ........................................................................................................................................................................................ 26

Large sizes concept:The range ........................................................................................................................................................................................................................................... 32

Fans for clean air applications .............................................................................................................................................................. 34

Fans for dust-laden air applications ............................................................................................................................................ 36

System design recommendations ..................................................................................................................................................... 38

Ancillaries .................................................................................................................................................................................................................................... 40

Solyvent in the Fläkt Woods Group .............................................................................................................................................. 42

4

Centripal EU: a modular concept built aroundA design made and adapted

DE-DUSTINGPressurised or depressurised kilns, fans working as blowers or inexhaust mode.

GENERAL VENTILATION - FUME EXTRACTExtractors in workshops, fresh air make up and supply, fans forfiltering systems, clean rooms…

PROCESS FANS IN PAINT BOOTHSFans with removable impeller design, re-circulating fans forfurnaces, exhausters in spray booths…

FANS FOR GLASS INDUSTRYFans for ovens, glass mould cooling, furnace wall cooling, glassannealing, blowers in the cooling process.

CHEMICALS - GAS EXPLOSION PROOF DESIGN FOR HAZARDOUS AREASBlowers, exhausters, certified fan design, category 2 & 3, suitablefor Zones 1 & 2 of the directive.

AGRICULTURE - DUST EXPLOSION PROOF DESIGN FOR SILOAPPLICATIONSCertified fan design, category 2 & 3 for dusty environment Zone21 & 22 of the directive.

FURNACE BURNER AIR SUPPLYIntroduction of fresh air through a high pressure blower.

5

highest aerodynamic performancefor nearly all industrial applications

TRACTIONFans for trains, buses: cooling blowers for traction motors, brakingresistors, converters, transformers…

IMPELLERS AND INLET CONESOEM’s for filtering systems, air treatment, re-circulation systems,car wash, industrial vacuum…

FANS FOR ORIGINAL EQUIPMENT MANUFACTURERS (OEM’S)Machines for packing, plastic films, DC motor cooling, generatorcooling, sweepers, …

MARINE - OFFSHOREExhausters, blowers, motor cooling, engine room air circulation...

TEXTILE MACHINERIESBlowers, exhausters and re-circulating fans for the completeproduction process.

WOOD AND PAPER INDUSTRIESBlowers/exhausters for kilns in de-dusting, dryers for paper orwood production processes.

FOOD INDUSTRYCoolers, dryers, water evaporation (pasta, milk…)

6

RD 0° RD 45° RD 90° RD 135° RD 180° RD 270° RD 315°

LG 0° LG 45° LG 90° LG 135° LG 180° LG 270° LG 315°

1 • Arrangement typesISO 13349: 1999

Description

Fourteen standard orientations are available as per

the diagrams. The orientations are viewed from the

drive side (side opposite to the fan inlet) and are given

according to the Eurovent standard.

2 • Orientations

3 • The sizes15 standard impeller diameters from 315 up to 1600 mm according to the R20 series.

8 Single width impeller. Semi-flexible Coupling Arrangement.

As arrangement 1 + one motor support in the same axis.

1 Single width impeller. Belt Driven Arrangement.

Overhung impeller fitted onto an intermediate shaft,

supported by 2 bearings mounted on a Support.

4 Single width impeller. Direct Driven Arrangement.

Overhung impeller directly fitted on motor shaft. No bearings on the fan.

Motor is fixed on a Support.

5 Single width impeller. Direct Driven Arrangement.

Overhung impeller directly fitted on motor shaft. No bearings on the fan.

Flanged motor fixed on a fan casing.

6 Double width impeller. Belt driven arrangement

Impeller mounted between bearings.

Available on demand

5 typical features determining a centrifugal fan:

7

4 • Aerodynamics– 6 blade types, depending on air transported (see page 8 - 9): D, B, P, L, S, T.– 11 performance envelopes, corresponding to impeller width (L, M, K, H, N, P, R, S, T, V, W). (Small sizes).

– 8 performance envelopes, corresponding to impeller width (9, 7, 6, 4, 3, 2, 1, 0). (Large sizes).

A large choice of electrical equipment, whatever your starting

(method), to make you life easier:

- Pre-wired electrical control panels (Star, Star Delta, dou-

ble speed ...).

- Pre-wired frequency inverters for fan performance

control.

- Safety switch (standard or explosion proof).

From the 1st January 2001, ISO 12499 "Industrial fans - Mechanical fan safety - Protection", the installer and end user are

directed as folows:

"If the fans rotating parts become accessible during service, the power supply must be completely isolated.

In those circumstances, a power supply isolation unit must be placed next to the fan to enable as positive

isolation of the unit during maintenance.

To conform to this internationalstandard, all fans must be installedwith a local isolating switch.

Centripal EU 4 L D 560 RD 45 Adx Std

Fan series Drive Impeller Type of Impeller Rotation Discharge Material Coatings:

Arrangement width blades diameter direction Adx: F24.2 steel, - Std : standard

4-5: direct L ➠ W (D - B (mm) RD = (Right) AISI 304 L: RAL 7035 (powder)

1: belt 9 ➠ 0 P - L LG = (Left) stainless steel... - Epoxy 120 µm

8: coupling S - T) anti-corrosion

- Galva HDG after

manufacture

- Finit RAL customer

imposed colour

5 • Material type and coatings• Carbon steel or Stainless steel (304L, 316L, 316Ti...)

• Standard coating, epoxy, galvanized steel, zinc spray...

Small sizes : L ........................................................................................... P .......................................................................................... WLarge sizes : 9 .......................................................................................... 3 ........................................................................................... 0

8

High fan efficiencies, low sound power levels, high performance, small surface area and long life are

obtained from the fans design and selection according to the given criteria.

Basic Fan selection information ?

Clean air

StandardsThe recently developed, EU range of centrifugal fans is based on the latest European and international standards.

Aerodynamic and acoustic performance research and testsPerformed according to ISO 5801 and ISO 13347.

The above research and tests have contributed to the very high efficiencies and exceptionally low sound power levels regardless of operating conditions:

Tolerances of ISO 13348 - AN 3 level

• Guaranted air volume and pressure : ± 5 %

• Guaranted total sound power levels : + 0 dB / + 4 dB

Dust-laden

Fan selection is derived from:• the nature of the air to be moved and fan environmental conditions.

• design requirements (volume, pressure...).

• drive arrangement and discharge direction, available space, accessories and options...

D-blade

(airfoil).

Suitable for handling clean air with relative

humidity levels not exceeding 80 %.

High efficiencies of up to 88 % and

particularly low sound power levels.

Suitable for L, M, (and 9 - 7 - 6 - 4 for sizes

> 1000).

P-blade

(flat, backward inclined).

Suitable for handling humid or fairly dusty air.

Efficiencies of up to 87 % with low sound

power levels.

B-blade

(backward curved).

Suitable for handling clean air with relative

humidity levels not exceeding 80 %.

High efficiencies of up to 85 % and

particularly low sound power levels.

Suitable for H, N, P, R, S, T, V, W widths, and

9- 7 - 6 - 4 - 3 - 2 - 1 - 0 for sizes > 1000.

6 different types of impellers for all applications: D, B, P, L, S, T.

9

Air très poussiéreuxair Heavily dust-laden air

Mechanical and vibration testsOur Computerized finite Element Analysis has allowed to eliminate all the natural frequencies within the working speed ranges.

Guaranteed vibration levels (following ISO 14694 BV3) :

4,5 mm/s: rigid assembly.

6,3 mm/s: on AV mounts.

L-blade

(flat, slightly backward inclined).

Suitable for handling air laden with abrasive

or slightly clogging dust.

Efficiencies of up to 77 % with relatively low

sound power levels.

S-blade

(shrouded paddle blade).

Recommended for handling air laden with

powdery, abrasive and clogging dust.

Efficiencies of up to 70 %.

T-blade

(unshrouded paddle blade).

Recommended for fibre-laden air.

This blade type resist damage due to fan

surge at low air volume.

10

Some useful information about directive 94/9/EC:Applicable since July 1st 2003. All new installations have to conformto this new regulation. All existing installations have to be analysedand risk assessed using this new code by the end of June 2006. ThisEuropean directive is applicable on all electrical equipments, androtating machineries which are installed in an hazardous area.

It is responsibility of the end user and his installer to define preciselythe zone in which the fan is going to run. Zone can be different insideand outside the fan. Category of machinery has to correspond to themore dangerous zone.

For categories 2G, 2D, 3G and 3D corresponding to zones 1, 2, 21 and 22, our technical file number is:

ST M 07 TEC 2885

And include:• Certificates of conformity .

• Balancing certificate.

• Tightness certificate for a ducted/ducted configuration.

• Vibration test report.

• Over-speed test report.

• Storage instructions.

• Starting and maintenance manuel.

Fan category Corresponding zone

1G category Zone 02G category Zone 13G category Zone 21D category Zone 202D category Zone 213D category Zone 22

G = GAS , D = DUST.

Centripal Ex:a complete certified range

Additional elements of manufacturers file, following the directive:Additional name plate:

Correspondence between fan categories and zones:

3DL range certifiedby a notified bodyCertificat number:

LCIE 06 ATEX 6101X

Conform to theEN 14986 standard

11

Some other construction details imposed by the directive for steel impellers for example are:• Fully welded construction above 11 kW.

• Carbon shaft: carbon has the ability to be worn is on first start up without burning, asthe seal is perfectly adjusted to the motor shaft. This means that there is no risk ofignition during start up.

• Anti-spark linings in brass protecting all rotating parts: cooling disk, pulleys, shafts,hubs…

• Brass or copper inlet cones for a maximum safety, combined with a minimum dis-tance between rotating and static parts.

• All bolted parts are also linked to each other via a stainless steel earthing system.

• All electrical equipment has to be certified: motors, temperature detectors,vibration monitoring (compulsory for 2D zones)...

• Pulleys to be balanced, belts to be made in an anti-static material.

Centripal Ex:special features of an Fan

motor choiceDust environments:

Azardous Danger Protection Motor Protectionarea zone level of category mode

equipment

Continous20 Very high 1D Prohibiteddanger

Likely to21 High 2D IP 6Xhappen

Unlikely to22

happenConductive Normal 3D IP 6X

dust

Unlikely to22

happenNon conductive Normal 3D IP 5X

dust

Motors are certified zone 21 or 22. Depending if dust is conductive ornot, protection mode is going to be IP 6X or 5X (generally IP 65 or IP 55).

Motor choice in a dust environment:

If danger is unlikely to happen, likely to happen or permanent, motorcan be of a spark-proof design, explosion proof design, or prohibited.

Motor choice in a gas environment:

Azardous Danger Protection Motor Protectionarea zone level of category mode

equipment

Permanent CEI EN0 Very high 1Gdanger 50284

Likely to EEx-d

happen 1 High 2G EEx-deEEx-e

Unlikely tohappen 2 Normal 3G EEx-nA

Gas environment:

Group T1 T2 T3 T4 T5 T6450 °C 300 °C 200 °C 135 °C 100 °C 85 °C

I Methan (mines) - - - - -

IIA Aceton, Acetic Acid, Butane, Cyclohexane, Acetaldehyde - -Ammoniac, Ethyl Kerosen,

Methan,Methanol, alcohol THFPropane,Toluene

IIB Koke gas, Ethylene Hydrogen Ethyl - -Water gas Sulphide ether

IIC Hydrogen Acetylene - - - Nitrate ethyl

For the gas environments, additional data to be considered is surface temperature of themotor itself, depending on a gas transported or ambiant:

12

13

Centripal EUSmall sizes

• Drive Arrangements 1 - 4 - 5

• Pre - selection charts

14

Centripal EU small sizes: an innovative range,

A modular concept from 250 to 710 mm

Arrangement 5: the most compact désign

Product features:• From 250 up to 710 mm impeller Diameter.

• Flow rates up to 5,5 m3/s.

• Pressures up to 7000 Pa.

• Small surface area.

• Frequency converter speed control possible.

• Gas temperatures between -20 °C to + 60 °C.

• All impeller types available.

Applications : de dusting, OEM (cooling, drying…).

4 possibilities for installation:• Fixation on the inlet flange.

• Fixation on the outlet flange.

• Fixation with 2 feet on the floor.

• Fixation on AV mounts' kit.

Arrangement 4: a complete and cost effective range

Orientable construction

One casing to suit all arrangements: 14 different orientations available in 45° increments thanks to the

octogonal casing design. Flexibility of the units for on-site modifications is achieved allowing the casing or

motor size to be changed.

Easy for maintenance

The bolted motor support enables the impeller to be easily removed from the casing for ease of cleaning

and maintenance.

Due to the design, stainless steel fan configurations can be made with stainless steel for all gas contact

parts and mild steel for the motor support, thereby reducing the overal cost.

15

A very compact design.

Balt maintenance and the adjustment of

tension is easily facilitated thanks to a fully

adjustable support.

modular and compact, from 250 up to 900 mm(extension to 1250 mm for L and M)

The advantages are:Wide openings in the motor pedestal enable easy

access for cabling.

Inlet and outlet flanges according to ISO 13351.

Sufficient space on the motor pedestal allows the

fitting of a safety switch.

The large access door enables easy and efficient

inspection of the impeller.

Overhung impeller fitted directly on motor shaft:- Small surface area

- Reduced power requirements

- Simplified maintenance: no belts, no bearings.

- Standard fans can be adapted for temperature ranges of –20 °C up to +200 °C.

Overhung impeller fitted onto an intermediate shaft supported by two bearings and equipped with a V-belttype drive.

• Fan capacities fully site-adjustable,

• High fan speeds,

• High temperature applications,

• Special shaft seal,

Standard fans can be used at temperatures from -20 °C to +350 °C.

Arrangement 1: made for high temperatures and high rota-tion speeds

16

Typical applications• General ventilation.

• Boilers and furnaces.

• Heat treatment.

• Dehumidification.

• Smoke exhaust systems.

• Air conditioning.

Centripal EU small sizes - Clean air applicationsMedium pressures

FeaturesCentripal EU fans for clean air applications: D- type

hollow airfoil blades. These are available in 2 impeller

widths (L, M).

High efficiency levels are obtained with D-type

impellers:

• aerofoil, i.e.,aerodynamically shaped blades

matching the inlet cone, reduce shocks produced at

wheel entry, resulting in smooth air flow across the

blade surface and eliminating eddy currents

producing turbulence and noise.

• Low absorbed powers, high fan efficiencies and low

sound power levels.

17

MD 630 2p

MD 560 2p

MD 500 2p

MD 500 4p

LD 500 4p

LD 550 4p

LD 630 4p

LD 710 4p

LD 800 4p

LD 900 4p

MD 560 4p

MD 630 4p

MD

710 4p

MD

800 4p

MD

900 4pLD 500 2p

LD 560 2p

MD 450 2p LD 450 2p

MD 400 2p LD 400 2p

MD 355 2p LD 355 2p

MD 315 2pLD 315 2p

LD 450 4p

LD 1250 6p

1 2 3 4 5 15100

200

400500

750

1000

1500

2000

2500

3000

3500

4000

4500

5000

6000

7000

0,2 0,3 0,4 0,5 6 7 8 9 10 20 30 40 50

CE

NT

_EU

1-M

D-L

D

0,1 0,2 0,3 0,5 1 2 4 73 5 10 15 20 24 30986 400

100

200

300

400

500

750

1000

1500

2000

2500

3000

3500

4000

4500

5000

6000

7000

8000

MD

LD

710630560500400355315

800710630560500450400355315 1250

1250

900 1000

Arr. 4

Arr. 1

∆ to

tal p

ressu

re (

Pa

)

Fan pre-selection chart - Direct driveThe pre-selection chart below should be used to determine which drive arrangement best meets design requirements:

• 50Hz direct drive fans at 2,900 or 1,450 rpm, 950 rpm.

CENTRIPAL EU 4 - MD/LD - 2, 4 and 6 poles.

∆ to

tal p

ressu

re (

Pa

)

Fan pre-selection chart - Belt driveCENTRIPAL Eu 1 - MD/LD

Volume (m3/s)

Volume (m3/s)

18

Centripal EU small sizes - Clean air applicationsHigh pressures

FeaturesCentripal EU high pressure - clean air fans feature

B-type curved blades and are available in 8 impeller

widths (H, N, P, R, S, T, V and W).

• Combinations of design features ensures fans

precisely match design requirements.

• Centripal EU equipped with B-type impellers are best

suited for low and very low air volume requirements.

Typical applications• Furnace burner air supply.

• Fluidization.

• Pneumatic conveying.

• Glass annealing.

• Diesel engine booster.

• Air curtains.

• Glass mould cooling, heating boiler optical cell cooling, etc.

• Pulsators in waste water treatment plants.

19

CE

NT

_EU

4_2P

-1

0,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 2 3 6 80

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

14000

15000

16000

1700018000

315

355

400

450

500

560

630

710

800

900

1000

900

800

710

630

560

500

450

800

710

630

560

500

450

400

355

TB

RB

NB

315

355

400

450

500

560

630

710

900

900900

1000

900

800

710

630

560

500

450

1000VB

WB

SB

PB

HB

800

800800

710710

710

630630630

560560560

500500500

450450450

400400

355355

315

0 0,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 2 3 6 10

CE

NT

_EU

4_2P

-2

3

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

14000

15000

16000

1700018000

CE

NT

_EU

1-S

-P-H

30,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 1,5 2 3 6 8 12 180

500

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

16000

18000

20000

SB

PB

HB

800

800

800

710630

630630

560

560500

500 500450

450 450400

400

400

355

355

355

900

560

CE

NT

_EU

1-R

-N

30,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 2 3 6 80

500

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

16000

18000

20000

RB

NB800

800

630

630

560

560

450

450

400

400

355

355

500

500

Arr. 4

Arr. 1

Fan pre-selection chart - Direct drive, 2 and 4-pole motorsThe pre-selection chart below should be used to determine which drive arrangement best meets design requirements:

• 50Hz direct drive fans at 2,900 rpm

CENTRIPAL EU 4 - H, N, P, R, S, T, V, W.

Fan pre-selection chart - Belt driveCENTRIPAL EU 1 - H, N, P, R, S.

∆ to

tal p

ressu

re (

Pa

)

Volume (m3/s)

∆ to

tal p

ressu

re (

Pa

)

Volume (m3/s)

∆ to

tal p

ressu

re (

Pa

)∆

tota

l pre

ssu

re (

Pa

)

Volume (m3/s)

Volume (m3/s)

20

Typical applications• Furnace burner supply air.

• Dust separators.

• Coating machine dedusting.

• Dusty (cement factories, steel mills) or humid

(paper mills, dyeing) environment ventilation

systems.

FeaturesCentripal EU fans for dust-laden air applications.

Backward inclined blades (P and L). These are

available in 2 impeller widths (L, M).

Centrifugal force and blade inclination combine to

“peel off” dust, significantly reducing particle build-up

on the impeller.

The P type impeller with its sharply inclined blades is

most suitable for slightly dust-laden, non-clogging air

applications.

Slightly inclined, the L-blade impeller is designed for

handling slightly clogging, particle-laden abrasive air

and corrosive gases.

Centripal EU small sizes - Dust-laden air applicationsMedium pressures

21

1 2 3 4 5 15100

200

400

500

750

1000

1500

2000

2500

3000

3500

4000

4500

5000

6000

7000

0 0,20,1 0,3 0,5 6 7 8 10 20 30 40 50

MP 315 2p

MP 355 2p

MP 400 2p

MP 450 2p

MP 500 2p

MP 630 2p

MP 560 2p

LP

315 2p

LP 355 2p

LP 400 2p

LP 450 2p

LP 450 4p

LP 500 4p

LP 560 4p

LP

630 4p

LP 710 4p

LP

800 4p

LP 900 4p

MP

500 4p

MP

560 4p

MP

630 4p

MP

710 4p

MP 800 4p

MP 900 4p

1 2 3 4 5 150 0,20,1 0,3 0,5 6 7 8 10 20 30 40 50100

200

400

500

750

1000

1500

2000

2500

3000

3500

4000

4500

5000

6000

7000

8000

ML 560 2p

ML 500 2p

ML 450 2p

ML 400 2p

ML 355 2p

ML 315 2p

ML 900 4p

ML 800 4pM

L 710 4pML 630 4p

ML 560 4p

ML 500 4p

LL 315 2p

LL 355 2p

LL 400 2p

LL 450 2p

LL 500 2p

LL 560 2p

LL 450 4p

LL 500 4p

LL 560 4p

LL 630 4p

LL 710 4p

LL 800 4p

LL 900 4p

LL 1250 6P

Arr. 4

Arr. 4CENTRIPAL EU 4 - MP/LP.

∆ to

tal pr

essu

re (

Pa)

∆ to

tal pr

essu

re (

Pa)

Fan pre-selection chart - Direct driveThe two pre-selection charts below should be used to determine witch drive arrangement best meets design requirements:

• 50Hz direct drive fans at 2,900 1,450 or 950 rpm.

CENTRIPAL EU 4 - ML/LL.

Volume (m3/s)

Volume (m3/s)

22

Arr. 1

Centripal EU small sizes - Dust-laden air applications

Fan pre-selection chart - Belt DriveCENTRIPAL EU 1 - ML/LL.

∆ to

tal pr

essu

re (

Pa)

Volume (m3/s)

23

Arr. 1

Fan pre-selection chart - Belt DriveCENTRIPAL EU 1 - MP/LP.

Volume (m3/s)

24

Centripal EU small sizes - Dust-laden air applicationsHigh pressures

Typical applications• Dedusting.

• Chemical degassing.

• Plant recycling (cement factories).

• Powder and granulated product pneumatic conveying.

• Waste incinerators.

• Sweepers.

FeaturesCentripal EU fans for dust-laden air handling feature

L-type flat blades and are available in 4 impeller widths

(H, N, R and S).

• Centrifugal force and blade inclination combine to

"peel off" dust, significantly reducing clogging hazards.

• The L-blade is highly suitable for slightly clogging,

dust-laden air and corrosive gases.

25

CE

NT

_EU

4_2P

-3

0,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 2 5 90

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

14000

15000

16000

315

355355

355

315

355

400400400400

450450

450450

500500500

500

560560560

560

530530

530530

710710

710710

800

800800

900SLRL

HL

900

NL

CE

NT

_EU

1-S

L-R

L-N

L-H

L

0,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 2 431,5 6 90

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

14000

15000

16000

SL

RL

HL

NL

800

800800

630

630

630

560

560560

450

450450

450

400

400400

400

355

355355

630

355

Arr. 4

Arr. 1

Fan pre-selection chart - Direct driveThe pre-selection chart below should be used to determine which drive arrangement best meets design requirements:

• 50Hz direct drive fans at 2,900 rpm

CENTRIPAL EU 4 - SL/RL/NL/HL.

Fan pre-selection chart - Belt DriveCENTRIPAL EU 1 - SL/RL/NL/HL.

∆ to

tal pr

essu

re (

Pa)

∆ to

tal pr

essu

re (

Pa)

Volume (m3/s)

Volume (m3/s)

26

Typical applications• Dedusting of wood-working machines.

• Dust separators.

• Pneumatic conveying on carding and combing machines.

Centripal EU small sizes - Heavily dust-laden airMedium and high pressures

FeaturesCentripal EU fans for handling heavily dust-laden air

can be selected with either shrouded (S-blade) and

un-shrouded (T-blade) paddle blades. Fans are

available in 3 impeller widths (M-H-R).

This type of impeller is ideally suited for:

• powder and pellet-conveying applications when

selected with S-blades.

• fibre, shavings and paper-conveying when selected

with T-blades.

27

1 2 3 4 5 150 0,20,1 0,3 0,5 6 7 8 10 20 30 40 50100

200

400

500

750

1000

1500

2000

2500

3000

3500

4000

4500

5000

6000

7000MS 560 2p

MS 500 2p

MS 450 2p

MS 400 2p

MS 355 2p

MS 315 2p

MT 315 2p

MT 355 2p

MT 400 2p

MT 450 2p

MS 500 4p

MS 560 4p

MS 630 4p

MS 710 4p

MS 800 4p

MS

900 4p

MT 500 4p

MT 560 4p

MT 630 4p

MT 710 4p

MT 800 4p

MT 900 4p

1,5 2 3 40 0,05 0,1 0,2 0,3 0,4 0,5 0,6 0,8 1 6 8500

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

RT 450

HT 355

HT 400

HT 450

HT 500

HT 560

HT 630

HT 710

HS 355

HS 400

HS 450

HS 500

HS

560

HS

630

RT 500

RT 560

RT 630

RT 710

RT 800

Arr. 4

Arr. 4

Fan pre-selection chart - Direct drive, 2 and 4-pole motorsThe pre-selection chart below should be used to determine which drive arrangements best meets design requirements:

• 50Hz direct drive fans at 2,900 or 1,450 rpm.

CENTRIPAL EU 4 - MS/MT

CENTRIPAL EU 4 - RT/HS/HT - 2900 rpm.

Volume (m3/s)

∆ to

tal pr

essu

re (

Pa)

∆ to

tal pr

essu

re (

Pa)

Volume (m3/s)

28

Arr. 1

CE

NT

_EU

1-H

S-M

S

0,1 0,2 0,3 0,5 1 2 4 73 5 10 15 208 960300

400

500

750

1000

1500

2000

2500

3000

3500

4000

4500

5000

6000

7000

8000

9000

10000

12000

HS

MS

800

900800710630560500450400355315

630450

400

355

Volume (m3/s)

Fan pre-selection chart - Belt DriveCENTRIPAL Eu 1 - HS/MS.

Centripal EU small sizes - Heavily dust-laden air∆

tota

l pr

essu

re (

Pa)

29

Arr. 1

CE

NT

_EU

1-R

T-H

T-M

T

0,1 0,2 0,3 0,5 1 2 4 73 5 10 15 208 960300

400

500

750

1000

1500

2000

2500

3000

3500

4000

4500

5000

6000

7000

8000

900010000

12000RT

HT

MT

900800

450400355315 900710

800

630560500

500450400

355

800710630450

Volume (m3/s)

Fan pre-selection chart - Belt DriveCENTRIPAL Eu 1 - RT/HT/MT.

∆ to

tal pr

essu

re (

Pa)

30

31

Centripal EULarge sizes

• Drive arrangement 1 - 4 - 8

• Pre - selection charts

32

Centripal EU large sizes: a complete range in three

Arrangement 4: the cost effective solution from1000 up to 1400 mm diameter

Fans in direct driven arrangement, from 1000 mm to 1400 mm are covering a

wide range of aerodynamic working curves.

Frequency converter option, enables a better comfort in use.

For all applications from -20 °C to +200 °C.

Arrangement 1: a fully standardized range from900 to 1400 mm diameter

Totaly adapted to high fan speeds, high temperatures applications or special shaft

seal.

Fan capacities fully site - adjustable standard fans can be used at temperatures

from -20 °C to +350 °C.

33

arrangements to cover all industrial process needs

Arrangement 8: coupling driven arrangement from900 to 1600 mm diameter

The arrangement 8 is dedicated to applications where cycles (change of speed), high

temperatures (up to +350 °C) and high motor power are key features for the fan.

Coupling is particularly suitable for frequency drive.

Optional equipment:

• Inlet guide vane:For adjustment of fan performance on site, or for air flow regulation at constant speed.

• Oil bearings:This option is available on simple demand. For high rotation speeds, oil bearings are

bringing more comfort in lubrication maintenance.

• Rotation detectors:Mainly for arrangement 1; allows to check that the fan runs properly.

• PT 100 :To check temperature elevation of bearings

• Vibration monitoring:Useful in dusty environments, to monitor clogging and balancing of the impeller.

34

Arr. 4

9D 1000

9D 1120

9D 1250

7D 1000

7D 1120

7D 1250

9D 1400

6D 1000

6D 1120

6D 1250

4D 10004D 1120

4D 1250

CE

NT

_EU

4_G

T_0

1

3

0 5 10 15 20 25 30 35 40 45 50 55 60

500

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

FeaturesCentripal EU fans for clean air applications: B or D- type

hollow airfoil blades.

High efficiency levels are obtained:

• airfoil, i.e.,aerodynamically shaped blades matching

the inlet cone, reduce shocks produced at wheel entry,

resulting in smooth air flow across the blade surface

and eliminating eddy currents producing turbulence

and noise.

• Low absorbed powers, high fan efficiencies and low

sound power levels.

• B-type for highen pressure levels an narrow impellers.

Typical applications• Dedusters after filtration systems.

• Cooling (glass...).

• Industrial boilers.

• Smoke exhaust systems.

Fan pre - selection chart - Direct driveCENTRIPAL Eu 4 - Widths 9 - 7 - 6 - 4, D blades (Curves at maximum speed)

Centripal EU large sizes - Clean air applications∆

tota

l pr

essu

re (

Pa)

Volume (m3/s)

35

Arr. 1

9D 1000

9D 1120

9D 12509D 1400

7D 1000

7D 1120

7D 1250

6D 1000

6D 11206D 1250

4D 900

4D 1000

4D 1120

4D 1250

3B 900

3B 1000

3B 1120

3B 1250

2B 900

2B 10002B 1120

2B 1250

1B 900

1B 1000

1B 1120

1B 1250

CE

NT

_EU

4_G

T_0

2

0 5 10 15 20 25 30 35 40 45 50 55 601000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

16000

18000

20000

2000025000

9D 1000

9D 11209D 1250 9D 1400

7D 1000

7D 1120

7D 1250

6D 900

6D 1000

6D 11206D 1250

6D 1400

4D 900

4D 1000

4D 1120

4D 12504D 1400

4D 1600

3D 900

3D 1000

3D 1120

3D 1250

3D 1400

3D 1600

2B 900

2B 1000

2B 1120

2B 1600

1B 900

1B 1000

2B 1250

1B 1120

1B 1600

0B 900

0B 1000

0B 1120

0B 1250

0B 1400

1B 1400

2B 1400

1B 1250

0B 1600

CE

NT

_EU

4_G

T_0

3

0 5 10 15 20 25 30 35 40 45 50 55 601000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

16000

18000

20000

2000025000

Arr. 8

Pre - selection chart - Belt driveCENTRIPAL Eu 1 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1, D and B blades (Curves at maximum speed)

Pre - selection chart - Coupling driveCENTRIPAL Eu 8 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1 - 0, D and B blades (Curves at maximum speed)

∆ to

tal pr

essu

re (

Pa)

∆ to

tal pr

essu

re (

Pa)

Volume (m3/s)

Volume (m3/s)

36

9L 10009L 1120

9L 1250

9L 1400

7L 10007L 1120

7L 1250

6L 1000

6L 1120

6L 1250

4L 1000

4L 1120

4L 1250

CE

NT

_EU

4_G

T_0

4

0 5 10 15 20 25 30 35 40 45 50 55 60

500

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

16000

Arr. 4

Centripal EU large sizes - Dust-laden air applications

FeaturesCentripal EU fans for dust-laden air applications.

Backward inclined blades L.

Centrifugal force and blade inclination combine to “peel

off” dust, significantly reducing particle build-up on the

impeller.

Slightly inclined, the L-blade impeller is designed for

handling slightly clogging, particle-laden abrasive air and

corrosive gases.

Typical applications• Furnace burner supply air.

• Dust separators.

• Coating machine dedusting.

• Dusty (cement factories, steel mills) or humid (paper

mills, dyeing) environment ventilation systems.

Fan pre - selection chart - Direct driveCENTRIPAL Eu 4 - Widths 9 - 7 - 6 - 4, L blades (Curves at maximum speed)

∆ to

tal pr

essu

re (

Pa)

Volume (m3/s)

37

Arr. 1

9L 1000

9L 1120

9L 1250

9L 1400

7L 1000

7L 1120

7L 1250

6L 9006L 1000

6L 1120

6L 1250

6L 1400

4L 900

4L 1000

4L 1120

4L 1250

4L 1400

4L 16003L 900

3L 1000

3L 1120

3L 1250

3L 1400

3L 1600

2L 9002L 1000

2L 11202L 1250

2L 1400

2L 1600

1L 9001L 1000

1L 1120

1L 1250

1L 1400

1L 1600

CE

NT

_EU

4_G

T_0

6

0 5 10 15 20 25 30 35 40 45 50 55 601000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

16000

18000

20000

2000025000

27000

9L 1000

9L 11209L 1250

9L 1400

7L 10007L 1120

7L 1250

6L 1000

6L 1120

6L 1250

4L 900

4L 1000

4L 1120

4L 1250

3L 900

3L 1000

3L 1120

3L 1250

2L 900

2L 10002L 1120

2L 1250

1L 900

1L 1000

CE

NT

_EU

4_G

T_0

5

0 5 10 15 20 25 30 35 40 451000

2000

3000

4000

5000

6000

7000

8000

9000

10000

11000

12000

13000

1400015000

16000

18000

20000

2000025000

27000

1L 1120

1L 1250

Arr. 8

Pre - selection chart - Belt driveCENTRIPAL Eu 1 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1, L blades (Curves at maximum speed)

Pre - selection chart - Coupling driveCENTRIPAL Eu 8 - Widths 9 - 7 - 6 - 4 - 3 - 2 - 1, L blades (Curves at maximum speed)

∆ to

tal pr

essu

re (

Pa)

∆ to

tal pr

essu

re (

Pa)

Volume (m3/s)

Volume (m3/s)

38

d

1,5 d

0,45 d a

a =

0,1

5 d

a) Forward spin b) Reverse spin

Direction ofimpeller rotation

c) Mixing box at fan inlet d) Filter at fan inlet Bee's nestcausing forward spin. causing forward spin.

2 bafflesplacedat 90°angles

Cross-vane arrangement eliminates spin

Sheet steel flowstraightenermax. gageO,003 D

5 guide vanes in elbow eliminate spin.

System design recommendations

Inlet connections

Inlet spin

The various connections shown below all cause

air spin at the fan inlet.

Air spin is generally either in the direction of, or

opposite to the direction of rotation of the fan

impeller. If it is opposite to direction of rotation

of the impeller, the power consumption will be

increased.

If it is µin the direction of impeller rotation,

capacity will be reduced along with power

consumption.

Using guide vanes either upstream or in the

bends can minimize loss of capacity and static

pressure. The friction loss caused by such vanes

will need to be added to overall system loss.

There are two solutions to thisproblem:

• Non-uniform airflow at the fan inlet can be

corrected with the use of guide vanes.

We suggest that you contact our engineering

department for the selection of such equipment.

Our fan performance curves are based on tests

performed with optimum installation conditions.

The inlet ducts were circular and were connected

in a true alignment to the fan inlets with our

standard aerodynamic inlet cones fitted. and a

discharge duct equipped with an outlet extension

connected to a straight measuring duct.

Friction loss (system pressure) data is usually

available from the duct system manufacturer’s

catalogues.

Published data is based on uniform air intake at

the fan inlet.

It is very rare that a real installation meets the

ideal condition, it must therefore be noted that

the entire system effect be taken into account

to calculate the true performance requirements

of the fan, i.e.

• All duct system components and non-uniform

air intake to the fan will have an affect on the fan

performance

• A particular ductwork component located too

close to either the fan inlet or outlet will adversely

affect the friction loss factors.

Design considerations

39

L

1/2 d d

d

1/2 d

L

R

d

Le

a x

b

Non-uniform inlet air velocity

Duct bends at the fan inlet usually cause poor inlet distribution, with the higher air velocities

at the outer radius of the bend (fig. 1).

The problem can be corrected by:

• installing a straight section of at least 5 duct diameters (L) between the fan inlet and the

bend.

• installing vanes in the bend at a minimum distance of twice the inlet diameter of the fan

inlet (L).

• increasing the duct diameter before the fan, thereby increasing the radius of the bend.

In this case, a converging section should be located at the fan inlet. Duct diameters should

not exceed 1.5 times the fan inlet diameter.

Discharge connections

Bends, louver dampers connected directly to the fan outlet.

Discharge velocities are not uniform at the fan outlet (fig. 3), which is why

duct system components installed immediately downstream of the fan

will cause high pressure drops.

A good duct layout should have components installed at a minimum

distance of:

3 x 4 (a x b)

π

from the fan outlet, shown as “Le” in fig. 3.

In certain installations where it is necessary to install ductwork

components near to the fan outlet, the capacity loss may be minimized

by the use of a diverging duct section immediately after the outlet (fig. 4).

The length of the section should be such that its discharge velocity equals

the mean fan inlet velocity measured in the plane of the cone.

Fan capacity may be adversely affected when the space between 2 fans or between

the fan inlet and the wall is too small (fig.2).

The minimum distances shown should correct the problem.

Outlet Free

With discharge velocities not being uniform at the fan outlet as shown, an additionnal pressure loss will be incurred, the magnitude of which will depend

on the size of fan used, is to be added when the fan discharges directly into a plenum as the cross sectional area of the duct is larger than fan discharge

area.

Fig. 3

Fig. 1

Fig. 2

Fig. 4

40

Ancillaries

1 Inlet Flange(optional on Centripal L). Meets ISO 13351

requirements.

Inlet diameters from 315 to 1600 mm sized on

the R20 system.

2 Outlet FlangeMeets ISO 13351 requirements.

3 Casing access DoorBolted access door.

Standard ancillaries forbelt-drive arrangement

4 Belt-DriveOversize V-Belt and cast iron sheave type sized

to ISO 5292.

Drive meets ISO 4184.

5 Shaft GuardBolted onto bearing supports.

Simplifies bearinf cap disassembly.

6 Cooling Impeller GuardBolted onto bearing supports.

Integral air slots.

7 Drive GuardBolted onto the casing base. Integral air slots

and two inspection doors for speed and belt

checks.

8 Belt Tensioning SystemLocated under the motors mount for quick and

easy motor repositioning.

9 BearingsPlummer block bearing type.

Ball or roller bearings fitted as a function of

operating conditions and size to ISO 281 for a

useful life of 40,000 hours at maximum shaft

speed.

Optionnal ancillaries

10 Grease nipples and exhaustholes

11 Casing Drain20/27 male thread stub with cap.

Not available on 270° orientations.

12 Matching flange(see Inlet and Outlet Flange specifications).

Supplied with bolts for installation.

13 Safety Wire GuardMeets ISO 13852 requirements.

Spot welded stainless steel AISI 204, factory

fitted.

14 Matching flange(see Inlet and Outlet Flange specifications).

Supplied with bolts for installation.

15 Flexible connection sleeve anddeflector

Flexible connection sleeve

Class M1 fire rated flexible connections designed

for continuous operation at temperatures in

excess of 300 °C and operating pressures from

–9,500 Pa to +15,000 Pa.

Circular inlet sleeves flanged at both ends.

Outlet sleeves rectangular or rectangular-

circular and flanged at both ends, with the

circular section sized to the fan inlet diameter.

Deflector

Required to protect flexible connection sleeves

against extremely high or low pressures and

heavily dust-laden air.

16 Inlet Vane Control Unit(see our Gyropal literature).

17 SilencerCylindrical silencer, available with or without pod

(on request).

18 Cylinder-type FilterDisposable cartridge type inlet filter with 90 %

efficiency rating.

19 Anti-vibration MountingsAnti-vibration mountings for installation under fan

feet.

20 Electric Motor(all types and models).

21 Inverter drive speed controller(frequency converter).

22 Damper(on request)

Standard ancillaries

41

17

13

22

15

14

3

29

10

6 5

11120819

7

21

131612 15 17 18

4

42

A laboratory with a full compliment of

measurement equipment: over-speed

installation, fatigue tests, test rigs for measuring

fan performance, noise and vibrations, according

to the latest international standards.

A new range developed with the latest IT tools including Finite ElementAnalysis.

Centripal EU fans

43

Solyvent in the FläktWoods Group:

Created in 1919, Fläkt Solyvent Ventec has been a

reference on the industrial ventilation market, in

France and world-wide, for "Heavy Duty

Applications"(Cement, Power, Steel, Petrochemical),

as well as "Light Industrial Applications" (process fans

and building ventilation).

Fläkt Solyvent Ventec offers a comprehensive range

of centrifugal and axial flow fans, in either standard

design, adapted to customer needs, or completely

developed to technical specifications.

The continuous development of product ranges,

material employed or production tools allow Solyvent

to be the "Centre of Excellence for Centrifugal fans"

within the Fläkt Woods Group.

ISO 9000 V 2000 certification shows the

committment of Solyvent in its quality process ma-

nagement.

44

TS-J

PG

- C

SP

- (V

- 0

9/20

07) -

prin

ted

in F

ranc

e.

Building Air Climate Industry Air Movement

Fläkt Woods AB Fläkt Woods LimitedKung Hans väg 12 Tufnell WaySE-192 68 SOLLENTUNA Colchester, EssexSweden United KingdomTel: +46 8 626 49 00 Tel: +44 1206 544122Fax:+46 8 626 73 10 Fax:+44 1206 574434

Light Industry Heavy Industry

Fläkt Solyvent-Ventec Fläkt Solyvent-Ventec143, rue de la République 30, rue Paul Sabatier

B.P. 67 B.P. 2369882 Meyzieu Cedex France 71102 Chalon/Saône Cedex France

t + 33 (0) 4 72 45 13 00 t +33 (0) 3 85 41 73 11f + 33 (0) 4 72 45 13 42 f +33 (0) 3 85 41 73 22

w www.flaktwoods.com

Fläkt Woods reserves its rights to modify the technical datas described

in the document anytime. Informations are not contractual. Should you

need any further information, please contact the local agent in your

country.