General Safety Information; Requirements Of Personnel - SystemAir AW 355 D4-2-EX Montage- Und Betriebsanleitung

waste air cleaning must be carried out.
• conveying media which attack the materials in the fan (materials used: varnish-based polyacrylate, polyisocyanate,
EN 1706 AC-ALSi12 (FE) DF, steel wire DIN EN 10016-2 quality C4D, steel EN 10142-DX54D+Z275-N-A).
• operation of the fans with motors in „e" ignition protection class with frequency converter.
2.3

General safety information

Planners, plant builders and operators are responsible for the proper assembly and intended use.
• For examination and maintenance of the fans, EN 60079-17 (IEC 60079-17) is decisive.
•
Only use the EX fans in a fl awless condition.
•
Provide generally prescribed electrical and mechanical protective devices.
•
If intake or falling of foreign bodies cannot be prevented as a result of appliance or system
construction or if there is the risk of the explosion of an explosion-capable gas/air atmosphere,
additional measures are to be taken by the operator in order to prevent this, e.g. by attachment
of an additional protective grid with a small mesh width. In the installation examples marked
with a fl ash of lightning in the following picture, an increased risk with a view to foreign bodies
falling in must be expected.
• Regularly check the functionality of the protective devices.
• The protective devices may not be circumvented or put out of function.
•
In EX fans, the blade angle may not be subsequently altered!
•
Keep all warnings on the fans complete and in a legible condition.
• Adhere to the maintenance intervals stated in these instructions.
•
Obey the industrial safety directives.
–
Regulate responsibility for the various activities unambiguously.
–
Make sure that employees dealing with the EX fan read and understand these operating instructions before their
activity.
–
Regularly instruct these employees in safety-conscious conduct.
•
Rule out any risk from unintentional switching the fan on or unintentional access to the rotor during any work!
• Install proper lightning protection according to DIN VDE 0185 part 1.
• The systems must be at a suffi cient safety distance from transmitters or protected by suitable screening.
•
Certain operating points/speeds may not be reached if inherent resonances are reached as a result of added parts.
Examination for inherent resonance is to be carried out by the plant builder in commissioning.
•
The control devices may not be assembled and installed in the explosion-capable area.
2.4

Requirements of personnel

2.4.1 Assembly personnel
Assembly may only be carried out by trained and qualifi ed personnel.
2.4.2 Work on the electrical equipment
Work on the electrical equipment of the fan may only be done by a trained electrician or a person given instruction in
electrical engineering. This person must know the relevant safety directives in order to recognise or to avoid possible
risks.
Ex-fans - 06.2014
41