Dormakaba ED250 - ED50 Brake Maintenance; Air Gap Adjustment

52
ED50/ED100/ED250 09-2021DL4617-003
dormakaba ED50/ED100/ED250 OHC Header
Setup and Troubleshooting Instructions
Chapter 21
. ED brake maintenance
Fig. 21.4.1 ED50 operator
Fig. 21.4.3 Brake assembly
1
1 Brake assembly
2 Brake disc
assembly
3 M3 x 3 set screw
4 Brake motor
flange
6 M3 x 5 SHCS
1 Brake assembly
.. Adjustment of air gap:
brake to brake disc (Fig. ..).
TIPS AND RECOMMENDATIONS
Reference drawing:
254197-01-50
CAUTION
Turn program switch to CLOSE
before performing maintenance.
CAUTION
Air gap setting between brake and
brake disc:
. mm to . mm
(." to .")
. Using . mm hex key, loosen three
M x  set screws securing brake disc to
motor shaft.
. Insert feeler gauge [air gap setting for
sizing] between brake disc and brake.
. Move brake disc against shim(s).
. Screw M x  set screws against motor
shaft but do not tighten.
. Remove feeler gauge.
. Tighten M x  set screws.
CAUTION
M x SHCS torque setting:
. in-lb + . in-lb [. Nm +. Nm].
TIPS AND RECOMMENDATIONS
Paper stock thickness:
approximately 0.003"
1
2
3
4
6
6
3
Y
Y
Air gap
3
2
1
Fig. 21.4.2 Brake to brake disc air gap
1 Brake assembly
2 Brake disc
Fig. 21.4.4 Feeler gauge set
assembly
3 M3 x 3 SHCS