Siemens FLENDER N-EUPEX D, Руководство по эксплуатации, Страница: 19 / 23

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BA 3102 en 02/2016
• Coupling parts are being interchanged, i.e. their assignment to the specified shaft is incorrect.
• Specified axial fastenings are not fitted.
• Specified tightening torques are not being adhered to.
• Bolts are inserted dry or greased.
• Flange surfaces of screwed connections have not been cleaned.
• Alignment and/or shaft­misalignment values do not match the specifications in the instructions manual.
• The coupled machines are not correctly fastened to the foundation, and as a result shifting of the
machines e.g. due to loosening of the foundation­screw connection is causing excessive displacement
of the coupling parts.
• The coupled machines are not sufficiently earthed.
• N­EUPEX flexible elements are not fitted.
• The coupling guard used is not suitable.
5.2.3 Frequent faults in maintenance
• Maintenance intervals are not being adhered to.
• Original N­EUPEX spare parts are not being used.
• Old or damaged N­EUPEX spare parts are being used.
• Different N­EUPEX flexible elements are being used.
• Leakage in the vicinity of the coupling is not being identified and as a result chemically aggressive
media are damaging the coupling.
• Fault indications (noise, vibration, etc.) are not being observed.
• Specified tightening torques are not being adhered to.
• Alignment and/or shaft­misalignment values do not match the specifications in the instructions manual.
6. Maintenance and repair
6.1 Maintenance interval
The torsional backlash between the two coupling parts must be checked after three
months, then at least once a year.
The flexible elements (12) must be replaced, when the torsional backlash exceeds the value stated in
table 11.
ΔS
V
Fig. 7: Wear mark