Maintenance
Miscellaneous Maintenance
4
4-7
15doc121912
Maintenance
AIR GAP ADJUSTMENT
The air gap ,,a" grows gradually larger in consequence of wear of brake disc lining (5). The niminal value of
the air gap a nom " may be restored by screwing in the adjusting bolts (11). Prior to adjustment, slacken
mounting bolts (10) and then set the nominal value of air gap using the feeler gauge inserted between
armature (4) and body and screwing in the adjusting bolts (11). Tighten the mounting (10) 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 ma
chine),electrical connections - check for correctness and quality of connections, damaged elements - replace
them with new ones.
4.8
Miscellaneous Maintenance
1.
Check the drive belt tension after the first 20 hours, and every 50 hours thereafter. See Section 6.13 for drive
belt adjustment instructions.
2.
Check the mill alignment every setup. See Section 6, Alignment.
3.
Make sure all safety warning decals are readable. Remove sawdust and dirt. Replace any damaged or
unreadable decals immediately. Order decals from your Customer Service Representative.
4.
Check the power feed system steel cable every 50 hours, replace it every 500 hours.
Table 4:
TYPE
HPS08
a nom.
0,2 ± 0,05
a max.
0,5
50
500
