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Texi Catenaccio – Operation manual 2019
II
. TROUBLES AND CORRECTIVE MEASURES (SEWING CONDITIONS)
Trouble
Cause
Corrective measures
1.The needle
thread
slips off at
the start
of
bartacking
①
Stitches are slipped at
the
start
②
The needle thread
remaining on the needle
after thread trimming is
too short.
③
The bobbin thread is too
short.
④
Needle thread tension at
1
st
stitch is too high.
⑤
Pitch at 1
st
stitch is too
small.
○ Adjust the clearance between the needle and
the shuttle to 0.05 to 0.1mm.
○ Set soft-start sewing at the start of bar
tacking.
○ Correct the thread tension release timing of
the thread tension controller No.2.
○ Increase the tension of the thread take-up
spring, or decrease the tension of the
thread tension controller No.1.
○ Decrease the tension of the bobbin thread.
○ Increase the clearance between the needle
hole guide and the counter knife.
○ Decrease the tension at 1
st
stitch.
○ Decrease the number of rotation at 1
st
stitch
at the sewing start.
○ Make the pitch at 1
st
stitch longer.
○ Decrease the needle thread tension at 1
st
stitch.
2.Thread
often
breaks or
synthetic
fiber
thread
splits
finely.
①
The shuttle or the driver
has scratches.
②
The needle hole guide
has scratches.
③
The needle strikes the
work clamp foot.
④
Fibrous dust is in the
groove of the shuttle
race.
⑤
The
needle
thread
tension is too high.
⑥
The synthetic fiber thread
take-up spring is too
high.
⑦
The synthetic fiber thread
melts
due
to
heat
generated on the needle.
○Take it out and remove the scratches using a
fine whetstone or buff.
○Buff or replace it.
○Correct the position of the work clamp foot.
○Take out the shuttle and remove the fibrous
dust from the shuttle race.
○Reduce the needle thread tension.
○Reduce the tension.
○Use silicone oil.
3.The needle
often
breaks.
①
The needle is bent.
②
The needle hits the work
clamp foot.
③
The needle is too thin for
the material.
④
the driver excessively
bends the needle.
○Replace the bent needle.
○Correct the position of the work clamp foot.
○Replace it with a thicker needle according to
the material.
○Correctly position the needle according to the
material.
○Widen the distance between the needle and
the
wiper.(23 to 25mm)
22
Summary of Contents for Catenaccio
Page 1: ...Operation manual High speed bartack sewing machine Catenaccio...
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Page 31: ...Texi Catenaccio Operation manual 2019 25 III DRAWING OF THE TABLE...