JUKI LU-2800 Series Engineer's Manual page 85

Adjustment procedures
Adjust the distance from condensation stitch pin ❶ to nut ❷ to
1.
5.2 ± 0.5 mm.
Set stitch dial ❸ at the pitch corresponding to the condensation
2.
amount you want to set.
(Pitch 2 in the case of condensation amount of 2 mm)
Loosen clamping screw ❹ of the condensation arm ❺ .
Turn ON the condensation stitch cylinder ❻ . In this state, tight-
3.
en clamping screw ❹ of the condensation arm ❺ .
4. The condensation stitch amount can be set up to -3 mm (reverse
feed stitch).
(Caution) If the condensation amount is excessively small, the
material can be torn depending on the type of seam
to cause stitch skipping. This can cause a thread
trimming failure.
Adjustment procedures
1. Set the stitch dial to "1.5".
Loosen clamping screw ❸ of the condensation arm.
2.
Make cylinder ❻ retract the most.
3.
At this time, manually lower the reverse feed lever to place the
sewing machine in the reverse feed state. Tighten clamping
screw ❸ of the condensation arm at the position where the top
end of slot in link ❹ comes in contact with hinge screw ❺ .
Results of Improper adjustment
Results of Improper adjustment
If the condensation arm posi-
o
tion deviates from the specified
value, there may be a failure in
thread trimming.
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