1. Gases, vapours or mists
Check the ambient temperature for use of the coupling in the relevant temperature class.
Table 2-2 Temperature classes (TX) for explosive atmospheres as a result of gases, vapours or mists
Max. ambient temperature Temperature class
80 °C T4
70 °C T5
55 °C T6
2. Dust/air mixtures
Check the ambient temperature.
Table 2-3 Maximum surface temperature (TX) for an explosive atmosphere as a result of dust/air
mixtures
Max. ambient temperature Max. surface temperature
80 °C 110 °C
Notes concerning operation of the coupling in potentially explosive atmospheres
● Only use the coupling underground in mines in potentially explosive atmospheres together
with drive motors that can be switched off in the event of the formation of an explosive
atmosphere.
● Earth machines that are connected via the coupling with a leakage resistance of less than
10
6
Ω.
● If you want to use a coated coupling in potentially explosive atmospheres, please note the
requirements concerning the conductivity of the paint and the limitation on the paint layer
thickness applied in accordance with EN 13463-1. No build-up of electrostatic charges is
to be expected with a paint layer thickness of less than 200 μm.
2.4 General warning notices
DANGER
Danger due to bursting of the coupling
The coupling may burst if it is not used properly. There is a risk of fatal injury from flying
fragments. Bursting of the coupling can lead to an explosion in potentially explosive
atmospheres.
● Use the coupling for the purpose for which it is intended.
Safety instructions
2.4 General warning notices
N-EUPEX / N-EUPEX DS 3100en
16 Operating Instructions 10/2017
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