KTR Kupplungstechnik
GmbH
D-48407 Rheine
RADEX
®
-NC
Operating-/Assembly instructions
KTR-N
sheet:
edition:
47210 EN
14 of18
6
Schutzvermerk
ISO 16016 beachten.
Gezeichnet:
23.05.12Kb
Ersatz für:
KTR-N vom 26.03.09
Geprüft:
23.05.12 Kb
Ersetzt durch:
5 Enclosure A
Hints and instructions regarding the use in
hazardous areas
5.6
Marking of coupling for the hazardous area
Couplings for the use in hazardous areas are marked on at least one component completely and on the
remaining components at the outside diameter of the hub or on the front side with an
label for the respectively
permitted conditions of use. The laminae packages are excluded.
Complete labelling:
II 2G c IIC T6, T5, T4, T3 bzw. T2 - 30 °C
≤
T
a
≤
+ 75 °C, + 90 °C,
+ 125 °C, + 190 °C bzw. + 200 °C
II 2D c T 110 °C - 30 °C
≤
T
a
≤
+ 100 °C /I M2 c - 30 °C
≤
T
a
≤
+ 140 °C
Short labelling:
II 2GD c IIC T X/I M2 c X
The former marking
remains valid:
II 2G c IIC T5/T6 -20°C
≤
T
a
≤
+80/65°C
II 2D c T110°C/I M2 c -20°C
≤
T
a
≤
+80°C
The labelling with Explosion Group llC includes the Explosion Groups llA and llB.
If the coupling part is labelled with
in addition to
, KTR supplied it unbored or pilot bored.
!
C A U T I O N !
Any mechanical rework to couplings that are used in hazardous areas require an explicit
release by KTR.
The orderer must send a drawing to KTR acc. to which the manufacture must be made. KTR
checks this drawing and returns it to the orderer with approval.
5.7 Starting
Before putting the coupling into operation, check the tightness of the setscrews in the hubs, the alignment and the
distance dimension E and correct, if necessary, and also check all screw connections regarding the stipulated
tightening torques dependent on the type of coupling.
If used in hazardous areas the setscrews to fix the hub as well as all screw connections must be
additionally secured against self-loosening, e. g. glue with Loctite (medium strength).
Last but not least, the coupling protection against unintended contact must be fixed.
The cover must be electrically conductive and be included in the equipotential bonding. Bellhousings (magnesium
part below 7,5 %) made from aluminium and damping rings (NBR) can be used as connecting element between
pump and electro motor. The cover may only be taken off after having stopped the unit.
During operation, please pay attention to
•
strange running noises
•
occurring vibrations.
If the couplings are used in dust explosive areas and in mining the user must make sure that there is no
accumulation of dust in a critical quantity between the cover and the coupling. The coupling must no operate in an
accumulation of dust.
