FLENDER N-EUPEX DK, Руководство по сборке и эксплуатации

Страница: 44 / 68

Operation
7.2 Faults - causes and rectification
44 Edition 09/2022 M3105-02en
• Flange surfaces of screwed connections not cleaned.
• Alignment and/or shaft misalignment values not set in accordance with the instructions.
• Coupled machines were not correctly connected to the foundation so that a shifting of
the machines leads to an impermissible displacement of the coupling parts.
• Coupled machines not earthed adequately.
• Coupling guard used is not suitable.
7.2.2.2.3 Maintenance-related causes
7.2 Faults - causes and rectification
• Stipulated maintenance intervals not adhered to.
• Spare parts that were used were not original spare parts from Flender.
• Flender spare parts that were used were old or damaged.
• Leak in the area of the coupling not detected so that chemically aggressive substances
damage the coupling.
• Indications of faults, such as noise or vibration, were not heeded.
• Stipulated tightening torques not adhered to.
• Alignment and/or shaft misalignment values not set in accordance with the instructions.
7.2.2.2.4 Specific installation-related and maintenance-related causes
7.2 Faults - causes and rectification
• Flexible elements (12) not fitted.
• Fitted flexible elements (12) heated up excessively when applying heat to the coupling
parts.
• Flexible elements (12) of different types or age are used.
• Flexible elements (12) not replaced as sets.
7.2.3 Correcting faults
7.2 Faults - causes and rectification
7.2.3.1 Replacing wearing parts
7.2 Faults - causes and rectification
Flexible elements (12) are subject to wear and this wear can result in torsional backlash.
Procedure
1. Check the wear on the flexible elements (12) (see section Maximum permissible tor-
sional backlash (Page 48)).
2. Replace the flexible elements (12) if necessary (see section Replacing wearing parts
(Page 49)).
7.2.3.2 Correcting the changed alignment
7.2 Faults - causes and rectification
A changed alignment of the coupling during operation often occurs when the coupled ma-
chines shift towards one another. A cause of this can be loose foundation bolts.