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43
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6-7. Cautions in operation
Sewing speed
Denim 8 pcs. 2,200 to 2,500 sti/min
Denim 12 pcs. 2,200 to 2,500 sti/min
Clothes 2,200 to 2,500 sti/min
Clothes (Synthetic thread used) 2,000 to 2,300 sti/min
Knit 1,800 to 2,000 sti/min
Foundation 1,800 to 2,000 sti/min
(1) When threading and the sewing machine is
switched ON, in case the thread tension disk
is closed, sew the desired sewing pattern.
After thread trimming, the thread tension disk
will open.
(2) When the error indicator lamp lights up, be
sure to check the cause of trouble and take a
proper corrective measure.
(3) Do not draw, by hand, the material being
sewn during sewing. Doing so will cause the
needle shift from the correct position. If the
needle moves from the correct position, press
the key two times. This will return the
needle to the normal origin.
Closed
Opened
Reference for the sewing speed to be applied
* To prevent the thread breakage due to the needle heat, set the sewing speed referring to the
above table in accordance with the sewing conditions.
* For sewing the foundation or the like, lower the height of the needle bar to prevent the stitch skip-
ping. (Refer to the item
"7-1. Adjusting the height of the needle bar" p.45
).
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