Siemens SIMOTICS 1PH818 Série Instructions De Service Et De Montage page 160

Service Instructions NFF
Electromagnetic Double Face Spring – Applied Brake
- Remove the mounting screws (41) and (42)
- dismantle the complete coil body assembly with outer body (13) from the brake flange (11)
taking care not to damage armature disc (10)
- remove shim (20) and re-assemble in inversed order coil body assembly and outer body.
- offer brake onto the motor in the position specified
- tighten the mounting screws (41) to correct bolt tightening torque (as specified on the
drawing)
To simplify maintenance works the armature disc (10) may be retained in position by using the
emergency release screws (49). Ensure these are removed before setting into operation.
Note: If the shim (29) has previously been removed, a new friction disc (2), see chap. 8.4.,
together with shim (20) has to be fitted.
Attention: On assembling the brake or replacing the friction disc, care should be taken that the
linings do not come in contact with grease etc. Greasy substances if any, can be removed by
suitable degreasing agents. Never use petrol or paraffin.
8.4 Replacement of the friction disc
Proceed as follows:
Important ! Check up: The brake must be torque-free on the output side.
- Remove the mounting screws (41) and (42)
- dismantle the complete coil body assembly with outer body (13) from the brake flange (11)
taking care not to damage armature disc (10)
- take the friction disc (2) from the pinion (15)
- clean the brake
- push the friction disc (2) onto the toothing of the pinion (15)
- fit the shim (20)
- mount in inversed order coil body assembly (1) and outer body (13)
- offer brake onto the motor in the position specified
- tighten the mounting screws (41) to correct bolt tightening torque (as specified on the
drawing)
To simplify maintenance works the armature disc (10) may be retained in position by using the
emergency release screws (49). Ensure these are removed before setting into operation.
The new friction linings on the friction disc will transmit the full braking torque only
after a certain run-in period.
160
Stromag Dessau
IP 66
15
safety in motion
01.06.2009