NF ISO 14694

NF ISO 14694

July 2003
Standard Current

Industrial fans - Specifications for balance quality and vibration levels

ISO 14694:2003 gives specifications for vibration and balance limits of fans for all applications except those designed solely for air circulation, for example, ceiling fans and table fans. However, it is limited to fans of all types installed with a power of less than 300 kW or to commercially available standard electric motor with a maximum power of 355 kW (following an R20 series). For fans of greater power than this, the applicable limits are those given in ISO 10816 - 3. Where the fans in an installation have varying powers both above and below 300 kW, and have been the subject of a single contract, then the manufacturer and purchaser shall agree on the appropriate standard to be used. This should normally be based on the majority of units. Fan-equipment foundations and installation practices are beyond the scope of ISO 14694:2003. Foundation design and fan installation are not normally the responsibilities of the fan manufacturer. It is fully expected that the foundations upon which the fan is mounted will provide the support and stability necessary to meet the vibration criteria of the fan as it is delivered from the factory. ISO 14694:2003 is intended to cover only the balance or vibration of the fan and does not take into account the effect of fan vibration on personnel, equipment or processes.

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Main informations

Collections

National standards and national normative documents

Publication date

July 2003

Number of pages

48 p.

Reference

NF ISO 14694

ICS Codes

17.160   Vibrations, shock and vibration measurements
21.120.40   Balancing and balancing machines
23.120   Ventilators. Fans. Air-conditioners

Classification index

E51-004

Print number

1 - 21/10/2003

International kinship

ISO 14694:2003
Sumary
Industrial fans - Specifications for balance quality and vibration levels

ISO 14694:2003 gives specifications for vibration and balance limits of fans for all applications except those designed solely for air circulation, for example, ceiling fans and table fans. However, it is limited to fans of all types installed with a power of less than 300 kW or to commercially available standard electric motor with a maximum power of 355 kW (following an R20 series). For fans of greater power than this, the applicable limits are those given in ISO 10816 - 3. Where the fans in an installation have varying powers both above and below 300 kW, and have been the subject of a single contract, then the manufacturer and purchaser shall agree on the appropriate standard to be used. This should normally be based on the majority of units.

Fan-equipment foundations and installation practices are beyond the scope of ISO 14694:2003. Foundation design and fan installation are not normally the responsibilities of the fan manufacturer. It is fully expected that the foundations upon which the fan is mounted will provide the support and stability necessary to meet the vibration criteria of the fan as it is delivered from the factory.

ISO 14694:2003 is intended to cover only the balance or vibration of the fan and does not take into account the effect of fan vibration on personnel, equipment or processes.

Table of contents
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  • Avant-propos
    iv
  • Introduction
    v
  • 1 Domaine d'application
    1
  • 2 Références normatives
    2
  • 3 Termes et définitions
    2
  • 4 Symboles et unités
    8
  • 5 Objectif de l'essai
    9
  • 6 Catégories d'application d'équilibrage et de vibration (catégories BV)
    10
  • 7 Équilibrage
    11
  • 7.1 Généralités
    11
  • 7.2 Qualité d'équilibrage
    11
  • 7.3 Calcul du balourd résiduel admissible
    11
  • 8 Vibration du ventilateur
    12
  • 8.1 Exigences de mesurage
    12
  • 8.2 Système de support de ventilateur
    16
  • 8.3 Limites de vibration de ventilateur pour essais dans l'atelier du fabricant
    16
  • 8.4 Limites de vibration du ventilateur en fonctionnement in situ
    16
  • 9 Autres composants tournants
    17
  • 10.0 Instruments et étalonnage
    18
  • 10.1 Instruments
    18
  • 10.2 Étalonnage
    18
  • 11 Documentation
    18
  • 11.1 Équilibrage
    18
  • 11.2 Vibration du ventilateur
    19
  • 11.3 Certificats
    19
  • Annexe A (informative) Relations entre déplacement, vitesse et accélération de vibration en mouvement sinusoïdal
    21
  • Annexe B (informative) Pratiques d'assemblage pour équilibrage de ventilateur dans une machine à équilibrer
    23
  • Annexe C (informative) Sources de vibrations
    25
  • Annexe D (informative) Équation de vibration
    33
  • Annexe E (informative) Vibration et supports
    35
  • Annexe F (informative) Balourd et réaction des paliers
    36
  • Annexe G (informative) Surveillance d'état et conseils pour diagnostic
    39
  • Annexe H (informative) Proposition d'assouplissement vis-à-vis des niveaux et des classes spécifiés
    40
  • Bibliographie
    41
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