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Instruction Manual Supplement DOLPHIN VL Systems ATEX_EN_en
2.2 Application
Explosive gases and vapour mixtures can be drawn according to the scope of the Direc-
tive ATEX 2014/34/EU.
Depending on the equipment, the machine is intended for suction of explosive gases ac-
cording to the data given on the nameplate of the machine (NP), see
.
Permitted environmental conditions, see
.
NOTE
See ATEX Instruction Manual Supplement for full requirements and certification details.
2.3 Explanation of ATEX Classification
The ATEX classification is written on the nameplate of the machine (NP), see below a
marking example:
(Inside) NB####
(Outside) -20°C < Tamb < 60°C
II 1G Ex h IIB T4 Ga
II 2G Ex h IIB T4 Gb
Temperature class inside the machine (T4=135°C)
Equipment designed considering constructional safety
Explosion group outside the machine
Equipment category for explosive gasses inside the machine
Explosion protection inside the machine
Equipment category for explosive gasses
outside the machine
Design approved according
to ATEX Directive
Equipment designed considering constructional safety
Equipment protection level inside machine
Explosive protection inside the machine
Explosion group inside the machine
Notified body number (approval for category 1)
Temperature class outside the machine (T4=135°C)
Equipment protection level outside machine
Explosive protection outside the machine
Ambient temperature limitations
2.4 Safety concept
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.
Flow switch (FS) is to detect low operating liquid flow.
Resistance thermometer (TSA) is to detect high vacuum pump discharge temperature.
The limit values of each accessory are defined in the wiring diagram chapters, see Electri-
cal Connection of the Monitoring Devices.
Summary of Contents for DOLPHIN VL 0100 A
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