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DRH

DRH
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DRH

Product catalog summary
Specifications:
The document details specifications for medium pressure fans, with flow rates from 1800 to 288000 m3/h and pressures from 60 to 530 mmH2O (600 to 5200 Pa). These fans are designed for medium-high flow rates and average pressures, featuring backward-curved blades for clean or dusty air. They are constructed from Fe360 steel and are balanced both statically and dynamically. Standard fluid temperatures range from -10°C to +60°C.
Operating Conditions:
The fans operate under standard conditions with inlet air at 20°C, 0 m above sea level, and a density of 1.205 kg/m3. Noise levels are measured as sound power LwA [dB(A)] in free field conditions with ducted fans.
Configurations and Orientations:
Standard constructional arrangements include configurations Arr.1, Arr.4, Arr.5, Arr.8, Arr.9, and Arr.12. Fans are available in bolted orientable versions for sizes 400-630 and fixed orientations for sizes 710-2000, with 8 RD (clockwise) and 8 LG orientations.
Special Applications and Impeller Classes:
For heavy-duty service conditions, it is recommended to contact customer service for the most suitable impeller type. Special constructions are available upon request.
Performance Data:
The document includes tables of performance data for various fan sizes, indicating maximum RPM, power, and sound levels. Guidelines for speed reduction at higher temperatures are provided, with specific values for temperature ranges from 60°C to 500°C.
Construction Forms:
The document outlines different construction forms for centrifugal fans:
  • Form 1: Impeller on a relay shaft, max air temperature of 60°C without a cooling fan and 150°C with one.
  • Form 4: Direct coupling with rotor on motor shaft, supporting temperatures up to 150°C with a cooling fan.
  • Form 5: Direct drive with a flanged motor, similar temperature limits as Form 4.
  • Form 8: Direct drive with a flexible coupling, similar to Form 1.
  • Form 9 and 12: Designed for V-belt drive, with motor on the same frame as the fan, similar temperature limits as Form 1.
Recommendations:
The document emphasizes that the fans are not adjustable and highlights the importance of considering the included motor weight in the specifications. It also provides multilingual information on fan construction and performance.
Executions:
Execution 8: Similar to execution 1, featuring a shaft-motor coaxial coupling through an elastic joint, with the same temperature limits.
Execution 9: Analogous to execution 1 but uses a belt coupling, with the motor supported on the side of the support structure, maintaining consistent temperature limits.
Execution 12: Uses a belt coupling similar to execution 1, with both motor and fan on the same base, identical temperature limits as execution 1.
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Catalog excerpts

DRH-1

DRH MIDDEL DRUK CENTRIFUGAAL VENTILATOREN VENTILATEURS MOYENNE PRESSION MEDIUM PRESSURE FANS MITTELDRUCK-VENTILATOREN VENTILADORES DE MEDIA PRESIO

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DRH-2

WERKGEBIED EN EIGENSCHAPPEN DOMAIN DE TRAVAIL ET CARACTERISTIQUES Werkgebied Middel-hoog debiet. Middelhoge druk. Waaier type Achterover gebogen schoepen. Toepassingen Voor afzuiging en transport van schone of stoffige lucht. Standaard bouwvormen Voor bouwvorm 1,4,5,8,9 &12 zie pagina 23 & 24. Standaard temperatuurbereik van het medium -10…+60 °C. Hogere temperaturen mogelijk in aangepaste uitvoeringen. Constructie Behuizing uit staalplaat Fe360, waaier uit Fe360 statisch en dynamisch gebalanceerd. Speciale uitvoeringen mogelijk zoals Cortenstaal, galvaniseren, RVS AISI 304 & AISI 316. Condities...

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DRH-3

WERKGEBIED EN EIGENSCHAPPEN DOMAIN DE TRAVAIL ET CARACTERISTIQUES FIELD OF OPERATION AND FEATURES CAMPO DE TRABAJO Y CARACTERISTICAS Mittlere - grosse Fördermengen. Mittlere Drücke. Caudales medios-altos. Presiones medias. Kurve, rückwärts gekrümmt (negativ). Curva, invertida (negativa). Zur Absaugung und zum Transport von sauberer und staubhaltiger Luft. Ausf. 1-Ausf. 4-Ausf. 5-Ausf. 8-Ausf. 9-Ausf. 12, siehe Seiten 23 - 24. Para aspiración y transporte de aire limpio o cargado de polvo, incluso con pequeñas cantidades de serrín, virutas de distintos tipos y materiales granulados, exceptuando...

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DRH-4

SPECIFICATIES VOOR DRUK CARACTERISTIQUES EN SOUFFLAGE Motor • Moteur • Motor • Motor • Motor Ventilator • Ventilateur • Fan • Ventilator • Ventilador Debiet tolerantie ±5% • Tolérance sur le débit ±5% • Load tolerance ±5% • Durchsatztoleranz ±5% • Tolerancia respecto caudal ±5% Type • Type • Type • Typ • Tipo DELIVERY CHARACTERISTICS Het gewogen geluidsvermogen LpA gemeten bij de maximale geluidsdruk in het werkgebied, flexibel aangesloten op leidingwerk en geplaatst op

 Open the catalog to page 4
DRH-5

SPECIFICATIES VOOR DRUK CARACTERISTIQUES EN SOUFFLAGE DELIVERY CHARACTERISTICS Le niveau de pression sonore pondérée A, LpA, correspond à la valeur relevée dans les conditions d’essai au point de niveau sonore maximum. The A-weighted sound power level, LpA, is the value measured in test conditions at the point of maximum noise level. Der nach A bewertete Schalldruckpegel LpA entspricht in den Testbedingungen dem höchsten gemessenen Wert des Geräuschpegels.. El nivel de presión sonora ponderado A, LpA, corresponde al valor medido, en las condiciones de prueba, en el punto con máximos ni

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DRH-6

SPECIFICATIES VOOR VACUÜM CARACTERISTIQUES EN FAIT D'ASPIRATION Motor • Moteur • Motor • Motor • Motor Ventilator • Ventilateur • Fan • Ventilator • Ventilador Debiet tolerantie ±5% • Tolérance sur le débit ±5% • Load tolerance ±5% • Durchsatztoleranz ±5% • Tolerancia respecto caudal ±5% Type • Type • Type • Typ • Tipo SUCTION CHARACTERISTICS Het gewogen geluidsvermogen LpA gemeten bij de maximale geluidsdruk in het werkgebied, flexibel aangesloten op leidingwerk en geplaatst op trillingsdempers.

 Open the catalog to page 6
DRH-7

SPECIFICATIES VOOR VACUÜM CARACTERISTIQUES EN FAIT D'ASPIRATION SUCTION CHARACTERISTICS Le niveau de pression sonore pondérée A, LpA, correspond à la valeur relevée dans les conditions d’essai au point de niveau sonore maximum. The A-weighted sound power level, LpA, is the value measured in test conditions at the point of maximum noise level. Der nach A bewertete Schalldruckpegel LpA entspricht in den Testbedingungen dem höchsten gemessenen Wert des Geräuschpegels.. El nivel de presión sonora ponderado A, LpA, corresponde al valor medido, en las condiciones de prueba, en el punto con máximos...

 Open the catalog to page 7
DRH-8

AFMETINGEN EN GEWICHT / GRAFIEK OVERALL DIMENSIONS AND WEIGHT/WORKING CURVES DIMENSIONS D’ENCOMBREMENT ET POIDS/COURBES DE FONCTIONNEMENT AUSMAßE UND GEWICHTE/FUNKTIONSKURVEN DIMENSIONES QUE OCUPA Y PESOS/CURVAS DE FUNCIONAMIENTO 869 De ventilator is verstelbaar • Gewicht in tabel inclusief motor. Le ventilateur est orientable Le poids dans le tableau inclut le moteur TYPE The fan is revolvable The weight indicated in the table includes motor Der Ventilator ist drehbar Das Gewicht im Tafel schließt den Motor ein El ventilador es orientable El peso en la tabla incluye el motor Ultérieures informations...

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DRH-9

AFMETINGEN EN GEWICHT / GRAFIEK DIMENSIONS D’ENCOMBREMENT ET POIDS/COURBES DE FONCTIONNEMENT OVERALL DIMENSIONS AND WEIGHT/WORKING CURVES AUSMAßE UND GEWICHTE/FUNKTIONSKURVEN DIMENSIONES QUE OCUPA Y PESOS/CURVAS DE FUNCIONAMIENTO 902 De ventilator is verstelbaar • Gewicht in tabel inclusief motor. Le ventilateur est orientable Le poids dans le tableau inclut le moteur TYPE The fan is revolvable The weight indicated in the table includes motor Der Ventilator ist drehbar Das Gewicht im Tafel schließt den Motor ein El ventilador es orientable El peso en la tabla incluye el motor Ultérieures informations...

 Open the catalog to page 9
DRH-10

AFMETINGEN EN GEWICHT / GRAFIEK OVERALL DIMENSIONS AND WEIGHT/WORKING CURVES DIMENSIONS D’ENCOMBREMENT ET POIDS/COURBES DE FONCTIONNEMENT AUSMAßE UND GEWICHTE/FUNKTIONSKURVEN DIMENSIONES QUE OCUPA Y PESOS/CURVAS DE FUNCIONAMIENTO 1047 De ventilator is verstelbaar • Gewicht in tabel inclusief motor. Le ventilateur est orientable Le poids dans le tableau inclut le moteur TYPE The fan is revolvable The weight indicated in the table includes motor Der Ventilator ist drehbar Das Gewicht im Tafel schließt den Motor ein El ventilador es orientable El peso en la tabla incluye el motor Ultérieures informations...

 Open the catalog to page 10
DRH-11

AFMETINGEN EN GEWICHT / GRAFIEK DIMENSIONS D’ENCOMBREMENT ET POIDS/COURBES DE FONCTIONNEMENT OVERALL DIMENSIONS AND WEIGHT/WORKING CURVES AUSMAßE UND GEWICHTE/FUNKTIONSKURVEN DIMENSIONES QUE OCUPA Y PESOS/CURVAS DE FUNCIONAMIENTO 1151 Nadere informatie en maten. Ultérieures informations et cotes: Further information and sizes: Weitere Infos und Größen: Más informaciones y medidas: RD135 De ventilator is verstelbaar • Gewicht in tabel inclusief motor. Le ventilateur est orientable Le poids dans le tableau inclut le moteur TYPE The fan is revolvable The weight indicated in the table includes motor...

 Open the catalog to page 11

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.