Ex Classification Of The Chamber And Immediate Surroundings - Binder VDL Series Operating Manual

1.8

Ex classification of the chamber and immediate surroundings

The VDL vacuum drying oven is an assembly in the sense of ATEX Directive 2014/34/EU with the follow-
ing Ex classification:
II 2/3/- G IIB T3 Gb/Gc/- X
Explanation:
II Use of the device above ground
2 Device category 2 per ATEX Directive 2014/34/EU
Suitability for areas in which explosive atmospheres may occur occasionally.
Inner chamber (drying chamber), tubing / line to the vacuum pump, areas inside the vacuum
pump. See images of the areas in Chap. 3.5.
3 Device category 3 per ATEX Directive 2014/34/EU
Suitability for areas in which explosive atmospheres may occur, on a rare and temporary basis:
The entire device, with the exception of the device plug, is designed in Device category 3 in
relation to the environment
Heater tubes (without electrical connections), Safety temperature limiter (TL), Pt 100 controller
sensor, Pt 100 heating sensor
Surrounding of the chamber, loading area, area of installation of the vacuum pump, pump mod-
ule. See images of the areas in Chap. 3.5.
- No category per ATEX Directive 2014/34/EU
Device power plug (unprotected device area).
The device power plug is unprotected. The electrical connection must therefore be established
outside a zone.
See images of the areas in Chap. 3.5.
G Device category G per ATEX Directive 2014/34/EU
Gas: Do not introduce combustible dust into the chamber or allow combustible dusts to be pre-
sent in the vicinity of the chamber.
IIB Equipment group IIB
Substances falling under Gas group / Explosion group IIA or IIB are permitted.
Substances falling under Gas group / Explosion group IIC are not permitted.
T3 Temperature class of the inner chamber: T3 acc. to IEC 60079-0
Materials of temperature classes T4, T5, and T6 are not permitted. Introduce into the chamber
only materials whose auto-ignition temperature exceeds 200 °C / 392 °F
Gb Equipment protection level (EPL) Gb acc. to EN IEC 60079-0 / EN ISO 80079-36
Suitability for areas in which explosive atmospheres may occur occasionally.
Inner chamber (drying chamber), tubing / line to the vacuum pump.
Gc Equipment protection level (EPL) Gc acc. to EN IEC 60079-0 / EN ISO 80079-36
Suitability for areas in which explosive atmospheres may occur on a rare and temporary basis
(fault):
Chamber areas flushed with compressed air: Electrical installation area, electrical connection of
the heater.
- No equipment protection level (EPL) Gc acc. to EN IEC 60079-0 / EN ISO 80079-36
Device power plug (unprotected device area)
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