FLENDER FLUDEX - Assembly-Related Causes; Maintenance-Related Causes; Specific Assembly-Related and Maintenance-Related Causes; Resolving Faults

Operation
7.2 Fault – causes and correction
52 Edition 09/2022 M4602-02en
7.2.2.2.2 Assembly-related causes7.2 Fault – causes and correction
• Damaged component installed.
• Shaft diameter outside the stipulated tolerance range.
• Coupling parts interchanged and hence not assigned to the specified shaft.
• Stipulated locking elements to prevent axial movements not installed.
• Stipulated tightening torques not adhered to.
• Bolts inserted dry or greased.
• 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 causes7.2 Fault – causes and correction
• Stipulated maintenance intervals not adhered to.
• Replacement parts that were used were not original replacement parts from Flender.
• Flender replacement 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 assembly-related and maintenance-related causes7.2 Fault – causes and correction
• Flexible elements (12) not fitted.
• Fitted flexible elements (12) heated up excessively when applying heat to the coupling
parts.
• Flexible elements (12) are of different types or age.
• Flexible elements (12) not replaced as sets.
• Fusible safety plugs (103) with unsuitable fusing temperatures are used.
• The operating fluid is unsuitable.
• The filling quantity of the operating fluid is unsuitable.
7.2.3 Resolving faults7.2 Fault – causes and correction
7.2.3.1 Replacing wearing parts7.2 Fault – causes and correction
Flexible elements (12) are subject to wear and this wear can result in torsional backlash.