OPERATING MANUAL NBS COMMISSIONING / MAINTENANCE
ThyssenKrupp Aufzugswerke GmbH
6.2 Maintenance
Maintenance period: maintenance of NBS emergency brake control system
should take place within the framework of central maintenance of the
elevator, at least once a year.
Note: Commissioning and maintenance work may only be carried out by
trained and instructed qualified personnel.
All laws and regulations for elevator systems, as well as accident prevention
regulations, must be known and complied with.
More details on the sequence, settings and data can be found in chapters:
During operation, the function of the brake is to be checked by
observing the sequence.
2.1
The brake magnets and their activation unit must be free of
voltage after switching off the main switch.
Check the release gap between the brake magnet and anchor
disc when the brake is without current.
2.6
Check the heat development of the brake during operation.
Check that the protective cover has been fitted properly.
Check that the brake release screws and Allen key necessary for
emergency rescue are present and stored in the proper place.
2.6
Check that electrical connections are in good condition according
to instructions, i.e. undamaged; check that they are securely
attached
Remove any dirt from the brake.
Note: Attention should be paid to ensuring that grease, oil or other
substances do not get to the emergency brake, as otherwise the linings will
be destroyed or the braking effect diminished.
With normal, proper operation and the correct setting, the emergency brake
control is not subject to wear.
If abrasion or wear on the linings is determined, this indicates malfunctions.
In this case, the function and setting of the activation unit is to be checked
and corrected if required.
The actual present release gap between brake magnet and anchor disc is to
be checked.
If the pulling force of the brake magnet is no longer sufficient to pull the
anchor disc through a release gap that is too large or if the release gap
reaches the wear limit stated in chapter 3,
we recommend complete replacement of the safety brake.
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