Possible Faults When Selecting The Coupling And/Or Coupling Size; Possible Faults When Installing The Coupling - Siemens Flender FLUDEX 4600 Series Operating Instructions Manual

9.3.1

Possible faults when selecting the coupling and/or coupling size

• Important information for describing the drive and the environment are not communicated.
• System power too high.
• System speed too high or too low.
• Starting frequency too high.
• The ventilation of the coupling is inadequate.
• Chemically aggressive environment not taken into consideration.
• The ambient temperature is not permissible. (See also section 5.)
• Machining of a finished bore with incorrect diameter and/or incorrect fit assignment (see section 6 and
order­releated title page).
• The transmission capacity of the shaft­hub connection is not appropriate to the operating conditions.
9.3.2

Possible faults when installing the coupling

• Components with transport or other damage are being fitted.
• When fitting coupling parts in a heated condition, already fitted N­EUPEX flexible elements (12) are
being excessively heated.
• The shaft diameter is beyond the specified tolerance range.
• Coupling sides are being interchanged, i.e. their assignment to the specified drive direction is incorrect.
• Specified axial fixtures are not fitted.
• Specified tightening torques are not being adhered to.
• Alignment / shaft­misalignment values do not match the operating instructions.
• An incorrect operating fluid and/or an incorrect quantity of operating fluid is being put in.
• The coupled machines are not correctly fastened to the foundation, and as a result shifting of the
machines e.g. through loosening of the foundation­screw connection is causing excessive
displacement of the coupling parts.
• N­EUPEX flexible elements (12) are being omitted or incorrectly positioned.
• The coupling protection does not comply with the guidelines to be applied. It considerably restricts
ventilation of the coupling.
• Operating conditions are being changed without authorisation.
• Components are being fitted to the coupling which transmit excessive axial forces or bending moments
to the coupling.
• Add­on parts such as belt drives or brake disks are not designed in compliance with the
Directive 2014/34/EU and are an explosion hazard.
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FLUDEX 4600 en
Operating instructions 10/2017