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Industrial Centrifugal Fans:Centripal EU
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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
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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
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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.
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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…)
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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:
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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
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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.
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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.
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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
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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:
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Centripal EUSmall sizes
• Drive Arrangements 1 - 4 - 5
• Pre - selection charts
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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.
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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
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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.
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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)
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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.
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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)
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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
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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.
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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)
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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.
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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.
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