The faults and fault causes listed below only serve as an indication for troubleshooting. In the
case of a complex system be sure to include all the system components in the search for the
fault.
WARNING
Physical injury
Injury from rotating parts.
● Only carry out work on the coupling when it is not moving.
● Secure the drive unit against being operated accidentally.
● Attach a notice to the switch stating clearly that work is being carried out on the coupling.
● Before starting any work, make sure that the unit is free from loads.
Intended use
The coupling is only approved for the applications specified in these instructions. Please
observe all the stipulations in section Intended use (Page 13).
7.2.2.1 Possible faults
Table 7-1 Table of faults
Fault Cause Rectification
Sudden changes in the noise level and/
or sudden occurrences of shocks
Wear of wearing parts Follow the instructions given in section
Replacing wearing parts (Page 40).
Changed alignment Follow the instructions given in section
Correcting the changed alignment
(Page 41).
Coupling not suitable for the operating
conditions.
Check the possible causes given in sec‐
tion Unsuitable coupling (Page 39).
Use a coupling that is suitable for the
operating conditions.
Incorrect assembly of the coupling.
Check the possible causes given in sec‐
tions Assembly-related causes
(Page 39) and Specific installation-rela‐
ted and maintenance-related causes
(Page 40).
Reassemble the coupling in accordance
with these instructions.
Please observe all the stipulations and
requirements given in chapter Assem‐
bly (Page 23).
Incorrect maintenance of the coupling.
Check the possible causes given in sec‐
tions Maintenance-related causes
(Page 40) and Specific installation-rela‐
ted and maintenance-related causes
(Page 40).
Please observe all the stipulations and
requirements given in chapter Servic‐
ing (Page 43).
Operation
7.2 Faults - causes and rectification
N-EUPEX / N-EUPEX DS 3100en
38 Operating Instructions 10/2017
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