JUKI LU-2800 Series, Руководство инженера

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Adjustment procedures Results of Improper adjustment
1) Clearance of opener
LU-2810, 2810-6, 2810-7
1. Turn the handwheel in its normal rotational direction to bring
that opener ❶ comes nearest to the protruding portion of bob-
bin case.
2. Turn inner hook ❷ in the direction of the arrow until inner hook
stopper B is pressed against the groove in throat plate ❸ .
3. Loosen setscrew
❹
of the opener arm. Adjust the clearance
between the opener
❶
and protruding portion
C
of the bobbin
case to dimension A.
4. Tighten setscrew ❹ of the opener arm while pressing down
opener arm ❺ .
LU-2860, 2860-6, 2860-7, 2828-6, 2828-7, 2818-7, 2868-7
1. Turn the handwheel in its normal rotational direction to bring
that opener ❶ comes nearest to the protruding portion of bob-
bin case.
2. Turn inner hook ❷ in the direction of the arrow until inner hook
stopper B is pressed against the groove in throat plate ❸ .
3. Loosen two setscrews of the opener sleeve. Adjust the
clearance between the opener
❶
and protruding portion
C
of
the bobbin case to dimension A.
4. Tighten two setscrews of the opener sleeve while pressing
down opener ❶ and pressing up opener sleeve .
When the clearance is larger than
the specified value :
o
Loose stitches or thread break-
age will result.
When the clearance is smaller than
the specified value :
o
Inner hook ❷ or opener ❶ may
be damaged.