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Ensuring functional safety
4.8 Service and maintenance
Extended testing/maintenance after re‐
moving the brake
4.8.5
Check the air gap and function
Unintentional starting of the drive unit
Switch off the power supply to the drive unit so that it is in a no-voltage condition.
The brake must be in a torque-free condition.
Secure the drive unit to prevent it from being started up unintentionally.
Attach a warning notice to the start switch.
Danger due to rotating parts
When checking the air gap it is not permissible that the motor runs.
It is not permissible that the spinning rotor is touched.
Risk of injury caused by electric shock
Do not touch live contacts
40
Adjust the air gap
Check the rotor thickness
Check rotor teeth backlash, replace worn
rotors
Any movement/deflection of the torque
support at the guide parts and armature
disk
Check the springs for any damage
Check the armature disk and flange
and/or mating surfaces
- thermal damage (dark blue tarnishing)
- Flatness depending on the size
Max. run-in depth = nominal air gap de‐
pending on the size
WARNING
DANGER
DANGER
See the work instruction Adjust the air
gap (Page 41)
See the work instruction Checking the
friction lining and replacing the rotor
(Page 44)
SIMOGEAR Safety-related brake
Operating Instructions, 01/2024, A5E53220852A/RS-AA
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