ROTEX
®
SP "Non Sparking"
Operating/Assembly instructions
KTR-N
Sheet:
Edition:
40228 EN
20 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:
The below-mentioned failures can lead to a use of the
ROTEX
®
coupling other than intended. In addition to the
specifications given in these operating/assembly instructions make sure to avoid such failures.
The errors listed can only be clues to search for the failures. When searching for the failure the adjacent
components must generally be considered.
If used other than intended the coupling can become a source of ignition.
EU directive 2014/34/EU requires special care by the manufacturer and the user.
General failures with use other than intended:
•
Important data for the coupling selection are not forwarded.
•
The calculation of the shaft-hub-connection is not considered.
•
Coupling components with damage occurred during transport are assembled.
•
If the heated hubs are assembled, the permissible temperature is exceeded.
•
The clearance of the components to be assembled is not coordinated with one another.
•
Tightening torques have been fallen below/exceeded.
•
Components are mixed up by mistake/assembled incorrectly.
•
A wrong or no spider/DZ elements are inserted in the coupling.
•
No original
KTR
components (purchased parts) are used.
•
Old/already worn out spiders/DZ elements or spiders/DZ elements stored for too long are used.
•
Maintenance intervals are not observed.
Breakdowns
Causes
Hazard notes for
potentially explosive
atmospheres
Elimination
Different operating
noise and/or
vibrations occuring
Misalignment
Increased temperature on
the spider surface; ignition
risk by hot surfaces
1) Set the unit out of operation
2) Eliminate the reason for the misalignment
(e. g. loose foundation bolts, breaking of the
engine mount, heat expansion of unit
components, modification of the installation
dimension E of the coupling)
3) For inspection of wear see chapter 10.2
Screws for axial
fastening of hubs
working loose
Ignition risk due to hot
surfaces and sparking
1) Set the unit out of operation
2) Inspect alignment of coupling
3) Tighten the screws to fasten the hubs and
secure against working loose
4) For inspection of wear see chapter 10.2
Breaking of cams
Breaking of the cams
due to high impact
energy/overload
Danger by rotating cam
fragments
1) Set the unit out of operation
2) Replace complete coupling
3) Inspect alignment
4) Find out the reason for overload
Operating parameters
do not meet with the
performance of the
coupling
1) Set the unit out of operation
2) Review the operating parameters and select
a bigger coupling (consider mounting space)
3) Assemble new coupling size
4) Inspect alignment
Operating error of the
unit
1) Set the unit out of operation
2) Replace complete coupling
3) Inspect alignment
4) Instruct and train the service staff
Early wear of spider
Misalignment
Increased temperature on
the spider surface; ignition
risk by hot surfaces
1) Set the unit out of operation
2) Eliminate the reason for the misalignment
(e. g. loose foundation bolts, breaking of the
engine mount, heat expansion of unit
components, modification of the installation
dimension E of the coupling)
3) For inspection of wear see chapter 10.2
6
Breakdowns, causes and elimination
