FLENDER COUPLINGS N-EUPEX 3103en, Assembly And Operating Instructions Manual, Page: 41 / 64

Servicing
8
8.1 Maintenance intervals
DANGER
Danger due to bursting of the coupling
The coupling can burst if the maintenance intervals are not adhered to. There is a risk of fatal
injury from flying fragments. Bursting of the coupling can lead to an explosion in potentially
explosive atmospheres.
• Please observe all the stipulations concerning maintenance of the coupling in this section.
DANGER
Danger due to bursting of the coupling
The coupling can burst if the maximum permitted torsional backlash is exceeded. There is a risk
of fatal injury from flying fragments. Bursting of the coupling can lead to an explosion in
potentially explosive atmospheres.
• Note also the actual wear of the elastomer components.
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.
Check the torsional backlash between the coupling parts at the specified maintenance intervals.
The maximum permissible torsional backlash for the various coupling sizes can be found in
section Maximum permissible torsional backlash (Page 42).
Table 8-1 Maintenance intervals
Type Initial maintenance Follow-up maintenance
O 3 months after commissioning Every 12 months
P
Note
Shorter maintenance intervals
If necessary, set shorter maintenance intervals depending on actual wear.
Assembly and operating instructions 3103en
Edition 10/2020
41