Sharp LC-20VA, Operator'S Manual

Page: 53 / 60

OPERATOR’S MANUAL
P 50 / 57
9. Maintenance
“ Maintenance is more important than repair; and repair is better than purchase”.
Under long-term operations, if the machine has not been properly maintained and operated, its service
lift shall be greatly reduced. The workpiece quality is therefore affected, and the efficiency, decreased. It
is essential for an operator to know how to handle the machine and the concept of its maintenance and
keep correctly.
Daily Maintenance:
1. Check and see if the oil lever of hand crank pump is on the designed line.
2. The designated positions must be lubricated prior to operations.
3. Keep the machine idling for three to five minutes daily prior to operations.
4. At the close of each day, work table shall be cleaned and the unfinished workpiece must be
removed. A little bit of lubricant is recommended.
5. At the close of each day, all setting levers shall be loosened, and all aliding parts shall be moved to
the proper position. Then cutter must be dismantled.
6. At the close of each day, the headstock must be restored to its normal position if it tilted.
Monthly Maintenance:
1. Check and see if all clamping rails of various sliding surfaces are normal.
2. Check and see if the backlash between leadscrew and its nut is normal.
3. Check and see if the quill lock and that of each and over sliding surface is normal.
Quarterly Maintenance:
1. Check and see if the brake functions and belt are normal.
2. Inspact the lever of work table and erection status of headstock.
3. Test the machine again by the chart of test specifications.
4. Replace whatever parts worn-out.