ROTEX
®
SP "Non Sparking"
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40228 EN
24 of 28
6
Please observe protection
note ISO 16016.
Drawn:
2019-10-10 Pz/Bru
Replacing:
KTR-N dated 2017-01-02
Verified:
2019-10-10 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
The torsional backlash of the coupling (see chapter 10.3) according to directive
2014/34/EU only has to be inspected if a failure of the coupling and consequently a
standstill of the drive causes danger of explosion.
We recommend a preventive inspection of torsional backlash and a visual inspection of the
flexible spiders. This should be performed after 3,000 operating hours for the first time, at
the latest 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
The torsional backlash of the coupling (see chapter 10.3) according to directive
2014/34/EU only has to be inspected if a failure of the coupling and consequently a
standstill of the drive causes danger of explosion.
We recommend a preventive inspection of torsional backlash and a visual inspection of the
flexible spiders. This should be performed after 2,000 operating hours for the first time, at
the latest 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 (type 7.5) without feather keyways may be used in
category 3 only and are marked with category 3 accordingly.
ROTEX
®
SP coupling
Illustration 26: ROTEX
®
SP coupling
Illustration 27: ROTEX
®
spider
Here the backlash between the cams of the coupling and the flexible spider must be inspected 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
