21
ARPEX 8706 en
Operating instructions 10/2017
5.3
Marking of the coupling parts for use in potentially explosive areas
Couplings which are ordered in ATEX configuration, have the following marks on the outer circumference
of one of the coupling parts (e.g. on the hub):
Complete mark:
Flender GmbH
II 2G c IIC T2/T3/T4/T5/T6
46395 Bocholt - Germany
-40 °C ≤ Ta ≤ +260 °C/+180 °C/+115 °C/+80 °C/+65 °C
FLENDER couplings ARPEX
II 2D c T 120 °C -40 °C ≤ Ta ≤ +100 °C
<year built>
I M2 c -40 °C ≤ T
a
≤ +130 °C
Abbreviated mark:
Flender GmbH
II 2GD c IIC TX
46395 Bocholt - Germany
I M2 c X
FLENDER couplings ARPEX <year built>
All other coupling components, with the exception of the screw connection of the flanges and the shims,
must be marked by
.
5.4
Operating conditions
DANGER
Danger of explosion
When using unsuitable components in potentially explosive areas there is a risk of explosion .
Use the coupling only for the approved zones and equipment groups. In case of doubt, contact Flender.
Note
Marked couplings and/or coupling parts as described in item 5.3 "Marking of the coupling parts
according to Directive 2014/34/EU" are suited for the operating conditions defined in Directive
2014/34/EU mentioned below.
•
Equipment group II (use above ground) of categories 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.
Depending on the assigned temperature class, the following maximum ambient temperature
in the immediate vicinity of the coupling, or maximum surface temperature of the coupling are
permitted.
Table 1:
Temperature classes
Ambient temperature
Temperature class
Max. surface temperature
- 40 °C up to max. + 230 °C
T2
less than 280 °C
- 40 °C up to max. + 150 °C
T3
less than 200 °C
- 40 °C up to max. + 85 °C
T4
less than 135 °C
- 40 °C up to max. + 50 °C
T5
less than 100 °C
- 40 °C up to max. + 35 °C
T6
less than
85 °C
•
Equipment group I (underground applications) of the category M2.
