Siemens SIMOGEAR 2332 Original Mounting And Operating Instructions page 45

Note
Reactivate the friction lining at regular intervals
The friction lining must be reactivated at regular intervals if the brake is solely used as
holding brake without any dynamic load being applied. You can achieve this by applying
friction work, e.g. by braking from moderate motion or slow movement. This should be
repeated several times.
Procedure
Checking the friction lining thickness (rotor)
1. Remove the fan cover
For the combination with manual brake release:
Unscrew the manual brake release lever
For separately driven fans:
Remove the fan cover with separately driven fan.
2. Release the connecting cable.
3. Remove the fan locking ring and pull out the fan.
4. Loosen the brake screws evenly and remove the screws completely. Remove the solenoid.
5. Pull the rotor off the hub.
6. Watch out for any possible damage, for example eruptions in the friction lining or worn
gearing.
7. Measure the rotor thickness at three different positions around the rotor circumference
using a caliper gauge.
8. Compare the measured rotor thickness with the minimum permissible rotor thickness. If the
measured rotor thickness is too low, then the rotor must be completely replaced. The values
are listed in the table in Chapter Adjust the air gap (Page 40).
Procedure when replacing the rotor
1. Remove the fan cover.
When combined with manual release:
Unscrew the manual brake release lever.
With separately driven fan:
Remove the fan cover together with the separately driven fan.
2. Release the connecting cable.
3. Remove the fan locking ring and pull out the fan.
4. Loosen the brake screws evenly and remove the screws completely. Remove the solenoid.
SIMOGEAR 2332 - Safety-related brake
Operating Instructions, 11/2021, A5E51390096A/RS-AA
Ensuring functional safety
3.8 Service and maintenance
43