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6
4 Maintenance*
4.1 Adjustments
Adjusting the air gap: (Figure 1)
The air gap needs to be adjusted when the
mechanical release mechanism no longer functions
normally.
• Unscrew the manual release handle(16) when it is
supplied.
• Unscrew the 4 cover screws (40) which are securing
the fan cover guard (23) on the motor.
•Removethefancoverguard(23).Removemanual
release (14) and remove the sealing o-ring (50).
Clean the parts by removing the friction lining dust.
Insert a 0.4 mm (0.016 in.) shim between the brake
housing (8) and the armature (11). Tighten the brake
nut (24) so as to obtain a working gap of 0.4 mm dis-
tance between the armature (11) and the brake hous-
ing (8). The shim should slip slightly.
• Remove shim.
• Replace the sealing o-ring (50).
Replace the fan cover guard (23) and tighten the fan
cover screws (40).
• Replace the manual release handle (16) (if
supplied).
0.4mm
8
14
40
50
11
23
16
24
* See page 7 for exploded view and parts lists.
Figure 1
Installation Instructions