MAINTENANCE
Electrical Up/Down System
6
6-9
15doc042320
MAINTENANCE
1.
Electromagnet body
2. Coil
3. Armature
4. Brake disk
5. Gear wheel
6. Mounting disk
7. Adjusting bolt
8. Spring
9. Mounting bolt
10. Brake casing
11. Tooled Bushing
ADJUSTMENT OF AIR GAP
The air gap, "a" grows gradually larger in consequence of wear of brake disc lining (4). The nominal
value of the air gap, "a nom" may be restored by screwing in the adjusting bolts (7). Prior to
adjustment, slacken mounting bolts (9) and then set the nominal value of air gap using the feeler
gauge inserted between armature (3) and body and screwing in the adjusting bolts (7). Tighten the
mounting (9) and secure the position by screwing out the adjusting bolts as far as they go.
BRAKE MAINTENANCE
The brakes do not require special maintenance procedures, however during regular intervals of
time depending on intensity of brake operation, perform inspections and regulation of air gap "a".
When the brake disk reaches maximum wear, replace it with a new one.
While replacing the brake disk, take care that the friction surface of the disk, armature and
elements cooperating with the friction linings are free from grease and oil. Remove all dirt
accumulated from the brake interior. If in spite of correct mounting and proper regulation, the brake
does not operate, failure is due to:
- electromagnet - burnt coil, damaged supply cable,
- rectifier system (installed in the motor terminal box or control cabinet of the machine),
- electrical connections - check for correctness and quality of connections,
- damaged elements - replace them with new ones.
Table 5:
TYPE
HPS08
a nom.
0,2 ± 0,05
a max.
0,5
