Marking Of The Coupling Parts For Use In Potentially Explosive Areas; Conditions Of Use For Fludex Couplings In Potentially Explosive Areas - Siemens FLENDER FLUDEX Series Operating Instructions Manual

5.3

Marking of the coupling parts for use in potentially explosive areas

Note
Couplings which do not have a CE marking must not be used in potentially explosive areas.
Couplings to be used in potentially explosive areas have the following marking:
Flender GmbH
46393 Bocholt - Germany
FLENDER couplings FLUDEX <year built>
Marking of the fusible safety plug:
The N­EUPEX add­on coupling must have
5.4

Conditions of use for FLUDEX couplings in potentially explosive areas

The coupling with fusible safety plug with indication
in Directive 2014/34/EU:
• Equipment group II (use above ground) temperature class T3 of category 2 and 3 for areas
where there are explosible gas, vapour, mist, air mixtures as well as for areas where dust can
form explosible atmospheres.
• Equipment group I (underground applications) of the category M2.
DANGER
Risk of explosion
Risk of explosion in case of non­observance of the prescription relating to aluminium used below ground.
If it is to be used below ground in potentially explosive areas, the coupling, which is made of aluminium,
must be provided with a robust casing to preclude the risk of ignition from e.g. friction, impact or friction
sparks. The depositing of heavy metal oxides (rust) on the coupling housing must be precluded by the
casing or other suitable precautions.
DANGER
Risk of explosion
Risk of explosion in case of adjacent subassemblies (belt drive; braking unit), which are not suitable for
potentially explosive areas.
The FLUDEX coupling can be delivered with attached brake disk or V­belt pulley. The supplier of the
subassembly is responsible for the operation of the belt drive or braking unit in a potentially explosive
area in the sense of Directive 2014/34/EU . To be noted are, amongst other things, hazards from
electrostatic charging and hot surfaces. The use of V­belts in conjunction with gases specified in
explosion group "IIC" is not permitted.
18
II 2G c b IIB T3 -30 °C ≤ Ta ≤ +50 °C
II 2D c b T 160 °C -30 °C ≤ Ta ≤ +50 °C
I M2 c b -30 °C ≤ T
stamped on the hub parts.
is suited for the operating conditions specified
≤ +50 °C
a
FLUDEX 4612 en
Operating instructions 10/2017