85
ED50
01-2020
DL4615-001
dormakaba ED50 Installation Instructions – Fine cover
Chapter 27
27.7 ED900 brake maintenance
Fig. 27.7.1 ED900 operator
Fig. 27.7.3 Brake assembly
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
27.7.1 Adjustment of air gap:
brake to brake disc
(Fig. 25.7.2).
TIPS AND RECOMMENDATIONS
Reference drawing:
254197-01-50
WARNING
Set program switch to CLOSE
before performing maintenance!
CAUTION
Air gap setting between brake and
brake disc:
0.1 mm to 0.3 mm
(0.004" to 0.012")
1. Using 2.5 mm hex key, loosen three
M3 x 3 set screws securing brake disc to
motor shaft.
2. Insert feeler gauge [air gap setting for
sizing] between brake disc and brake.
3. Move brake disc against shim(s).
4. Screw M3 x 3 set screws against motor
shaft but do not tighten.
5. Remove feeler gauge.
6. Tighten M3 x 3 set screws.
CAUTION
M3 x3 SHCS torque setting:
5.3 in-lb + 0.9 in-lb [0.6 Nm +0.1 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. 27.7.2 Brake to brake disc air gap
1
Brake assembly
2
Brake disc
assembly
Fig. 27.7.4 Feeler gauge set
3
M3 x 3 SHCS
1