ROTEX
®
GS
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
45510 EN
36 of 40
23
Please observe protection
note ISO 16016.
Drawn:
2020-02-10 Pz/Ht
Replacing:
KTR-N dated 2019-11-22
Verified:
2020-02-10 Pz
Replaced by:
Equipment category
Inspection intervals
3G
3D
For couplings operated in zone 2 or zone 22 the inspection and maintenance intervals of
the usual operating/assembly instructions for standard operation apply. During the
standard operation which has to be taken as a basis of the ignition risk analysis the
couplings are free from any ignition source. For gases, vapours and dusts generated the
permissible glow and ignition temperatures specified in chapter 10.1 have to be
considered and observed.
M2
2G
2D
No gases and vapours of
explosion group IIC
An inspection of the torsional backlash and a visual inspection of the flexible spider must
be performed after 3,000 operating hours for the first time, at the latest after 6 months
after start-up of the coupling.
If you note insignificant or no wear on the spider upon this initial inspection, further
inspections can each be performed after 6,000 operating hours or at the latest after 18
months, provided that the operating parameters remain the same.
If you note significant wear during the initial inspection so that it would be
recommendable to replace the spider, please find out the cause according to the table
„Breakdowns“, if possible.
The maintenance intervals must be adjusted to the modified operating parameters
without fail.
M2
2G
2D
Gases and vapours of
explosion group IIC
An inspection of the torsional backlash and a visual inspection of the flexible spider must
be performed after 2,000 operating hours for the first time, at the latest after 3 months
after start-up of the coupling.
If you note insignificant or no wear on the spider upon this initial inspection, further
inspections can each be performed after 4,000 operating hours or at the latest after 12
months, provided that the operating parameters remain the same.
If you note significant wear during the initial inspection so that it would be
recommendable to replace the spider, please find out the cause according to the table
„Breakdowns“, if possible.
The maintenance intervals must be adjusted to the modified operating parameters
without fail.
Hubs, clamping hubs or similar types without feather keyway may be used in category 3
only and are marked with category 3 accordingly.
ROTEX
®
GS backlash-free shaft couplings
Illustration 25: ROTEX
®
GS backlash-free shaft coupling
Illustration 26: ROTEX
®
GS spider
If the drive allows for, backlash between the cams of the coupling and the flexible spider has to be measured by
means of a feeler gauge.
When reaching the wear limit
maximum friction
, the spider must be replaced immediately, irrespective of the
inspection intervals.
10
Enclosure A
Advice and instructions regarding the use in
potentially explosive atmospheres
10.2 Inspection intervals for couplings in
potentially explosive atmospheres
