Use In Ex Area - Burkert 2035 Manuel D'utilisation

Type 2035 / 3236
Basicsafetyinstructions
Caution!
risk of burns.
The surface of the device may become hot during long-term
operation.
▶ Do not touch the device with bare hands.
generally hazardous situations.
To prevent injuries:
▶ Ensure that the system cannot be activated unintentionally.
▶ Installation and repair work may be carried out by authorized
technicians only and with the appropriate tools.
▶ After an interruption in the electrical or pneumatic supply, ensure
that the process is restarted in a defined or controlled manner.
▶ The device must only be operated when in a perfect condition and
in consideration of the operating instructions.
▶ The general rules of technology must be observed for application
planning and operation of the device.
To prevent material damage:
▶ Supply only media to the media connections that are specified in
chapter "7. Technical Data" as flow media.
▶ Do not place the valve under mechanical stress (e.g. by placing
objects on it or standing on it).
▶ Do not make any external alterations to the valves. Do not apply
paint to body parts or screws.
3.1. use in ex area
Abbreviation "Ex": see chapter "1.2. Definition of term / abbreviation"
3.1.1. safety instructions
For operation in Ex area Zone (gas) 1 and 2,
Zone (dust) 21 and 22, the following
applies:
The valve actuator is suitable for use as a Category 2 device for
Zone 1 and 21, non-electrical production equipment.
Danger!
danger of explosion caused by electrostatic charge.
Depending on the conductivity of the medium, electrostatic charges
may occur on the valve membrane if plastic bodies are used.
To prevent electrostatic charges in the fluid, the following instructions
must be observed (as per IEC 60079-32-1):
▶ (1) Media with a conductivity ≤ 100 pS/m may only be used if no
flow speeds > 1 m/s occur or if the possibility of the pipe system
running dry is excluded by suitable monitoring.
▶ (2) Media with a conductivity > 100 pS/m and ≤ 1000 pS/m may
only be used if they are liquids without any particles, steam or pure
gases/steam, or if the instructions in (1) are observed.
▶ (3) Media with a conductivity > 1000 pS/m are not subject to any
restrictions.
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