BUSCH COBRA ATEX, Instruction Manual

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2 | Product Description
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2.6 Explanation of ATEX Classification
The ATEX classification is written on the nameplate of the machine (NP), see below a
marking example:
Inside (i)
Outside (o) II 2G IIB T3 X
II 2G IIB T3 X
Explosion group inside the machine
Equipment category for explosive gases inside the machine
Equipment category for gas and dust outside the machine
Equipment group II (not for mining application)
Explosion protection inside the machine
Explosion protection outside the machine
Design approved according to ATEX Directive
Equipment group II (not for mining application)
Temperature class inside the machine
(T2=300°C) ; (T3=200°C) ; (T4=135°C)
Special conditions for operation*
Special conditions for operation*
Temperature class outside the machine
Explosion group outside the machine
* The specific operating conditions are determined in this instruction manual.
2.6.1 ATEX Nameplate
The machine has two different nameplates:
– A nameplate (NP1) is fixed on the base frame of the machine with the ATEX marking
inscription.
– A second nameplate (NP2) is fixed on the machine stage (module) identifying that
the stage is suitable for ATEX certified machine.
This allows the preservation of the machine ATEX certification if the machine stage
should be replaced.
2.7 Safety concept
WARNING
Misinterpretation of the ATEX instructions.
Risk of severe injury!
Risk of explosion!
• Make sure that the recommendations described in this manual correspond to the
ATEX marking written on the nameplate (NP).
• If anything needs to be clarified, please contact your Busch representative.
The safety concept is based on the prevention of sparks and excessive temperatures by
means of various accessories.
The monitoring devices must be integrated into the system control such that operation
of the machine will be inhibited if the safety limit values are exceeded.
The limit values of each accessory are defined in the wiring diagram chapters, see Elec-
trical Connection of the Monitoring Devices.
To have more details about the monitoring procedure, see Flowchart [ ► 22] .