ROTEX
®
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40210 EN
19 of 22
22
Please observe protection
note ISO 16016.
Drawn:
2017-09-06 Pz/Bru
Replacing:
KTR-N dated 2017-01-02
Verified:
2017-09-06 Pz
Replaced by:
2. Mining
Equipment group I of category M2 (coupling is not approved for equipment group M1).
Permissible ambient temperature - 30 °C to + 90 °C (valid for T-PUR
®
only: - 50 °C to + 120 °C).
Explosion group
Inspection intervals
3G
3D
For couplings which are classified in category 3G or 3D the operating and assembly
instructions that are usual for standard operation apply. During the standard operation
which has to be subject to the ignition risk analysis the couplings are free from any ignition
source. Merely the temperature increase produced by self-heating and depending on the
coupling type has to be considered:
for ROTEX
®
:
T = 20 K
II 2GD c IIB
T4, T5, T6
An inspection of the torsional backlash and a visual inspection of the flexible spider/DZ
elements 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/DZ elements 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/DZ elements, 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.
II 2GD c IIC
T4, T5, T6
An inspection of the torsional backlash and a visual inspection of the flexible spider/DZ
elements 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/DZ elements 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/DZ elements, 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 keyways may be used in category 3
only.
10
Enclosure A
Advice and instructions regarding the use in
hazardous locations
10.1 Intended use in
hazardous locations
10.2 Inspection intervals for couplings in
hazardous locations
