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(9) Installing position of the clamp spring
1) When the moving knife rests at its initial position,
loosen clamp screw setscrew
1
.
2) Align the marker line on the top face of moving
knife with the notch in clamp spring
2
. (It's a
guide for adjustment)
3) Bring the clamp section of clamp spring
2
into
contact with the moving knife, and secure the
clamp spring with clamp spring clamping screw
1
.
(Tightening torque: 0.2 to 0.3 N.m)
When bringing the clamp section of clamp spring
2
into contact with the moving knife, also bring
the top end of clamp spring near the moving
knife. The top end of clamp spring should come
in contact with the moving knife when the moving
knife operates.
*
After the adjustment of the mounting position
of the clamp spring, carefully check for "
1
Contact between the clamp spring and the
hook," and "
2
Contact between the clamp
spring and the moving knife (at its front end
position)." Contact between those parts can
cause a breakage of the clamp spring.
* When the position of the clamp spring cannot
be adjusted even clamp spring setscrews
1
are
loosened, loosen clamp spring base setscrews
3
and move clamp spring base
4
to the operator's
side to adjust.
(The position in vertical direction of the clamp
spring base has to be placed to the hook shaft
base. Therefore, tighten the clamp spring base
with setscrews
3
while lightly pressing it in
downward direction.
1
At the front end position of the
moving knife, it should not come
into collision with the clamp spring.
Caution : If a clearance is provided between the
clamp spring and the moving knife
when the moving knife rests at its initial
position, the clamp spring cannot clamp
bobbin thread.
3
4
Approximate :
0.3 to 0.8mm
Marker line
Notch
Clamp section
Front end position of the moving knife
2
Содержание LU-2220N-7
Страница 1: ...ENGLISH LU 2220N 7 INSTRUCTION MANUAL ...
