Maintenance Of Sawing Machine - JUKI PS-800-12080 Instruction Manual

5. MAINTENANCE OF SAWING MACHINE

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine. In addition, attach the covers which have been removed before operation back in
place.
No. Region
1 The area under the throat plate, area
surrounding the hook, bobbin case
and its inner portion, thread trimming
area, needle bar area, areas inside
and outside of the presser foot,
openings of the electronic control
box such as air inlet and outlet, and
the regions in which thread waste,
thread end and other stains are likely
to remain.
2 Lubricate the machine through the
Y-direction ball screw nut oil hole.
❶ ❶
❼ ❼
Fig. 1
Clean up the surface of equipment
with a tool such as an air gun. In
particular, clean up the regions in
which the aforementioned thread
waste, thread end and other stains
are likely to remain.
1. Remove screw ❶ . Detach mid-
plate back cover ❸ .
2. Enter the manual frame travel
screen from the operation panel.
❶ ❶
Press key ❷ to move the X-di-
rection linear module backward.
In addition, move oil hole ❹ on
the Y-direction ball screw nut
to the lower side of the middle
plate rear cover.
❸ ❸
3. Aligning tip ❺ of grease-filled
syringe (in Fig. 1) with oil hole
❷ ❷
❹ , add oil through the oil hole.
4. Lubricate each portions requir-
ing lubrication at least five times.
❻ ❻
The oil amount for each portion
should not fall below 5cm
5. Every time the grease is added
❹ ❹ through oil hole, press key ❻
and ❷ several times to move the
❺ ❺
Y ball screw nut back and forth
to spread the lubricating oil over
the clearance between balls.
6. After the completion of lubrica-
tion, check to make sure that the
grease exudes between the ball
screw and the nut.
7. After the completion of lubrica-
tion, move the rear cover of the
middle plate to its home position,
and tighten screw ❶ .
8. Lithium based grease No. 2 should
be used as lubricating grease. Do
not use it with mixed with other
type of lubricating grease.
– 62 –
Explanation
3
.
Operating time
Eight hours
According to the usage
environment, the sewing
machine may sew 100
million stitches.
(Lubrication should be
carried out when one of
the following conditions
has been reached.)
When the sewn number
of stitches has reached
100 million stitches; or
When the sewing ma-
chine has been used for
three months