JUKI DDL-8000A, Руководство инженера

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Trouble Cause (1) Cause (2) Check and corrective measures
From the previous page
1-4) The material is inappropriate-
ly stretched.
4-A) The needle hole of the throat
plate is too large.
Replace the current gauge with a new one
having a smaller diameter hole.
4-B) The thread relief on the back-
side of the presser is too large.
Use a presser with a smaller thread relief on
the backside or without thread relief.
Part No. D1524555DBA Small clearance groove
Part No. B1524012TBO No clearance groove
4-C) The parallel level of the presser
is inappropriate.
Replace the presser, or loosen the presser bar
holding screw and correct the needle entry and
presser bend if there is no needle entry.
4-D) The needle tip is blunt. Replace the needle.
1-5) Feeding is inappropriate. 5-A) Too high feed dog causes jump-
ing at high speeds.
Lower the height of the feed dog (MS : 0.8
mm, SH : 1.2 mm) or increase the pressure to
prevent the material from jumping.
5-B) The tip of the feed dog is worn. Sharpen the top edges.
5-C) The pitch of the feed dog is too
large.
Replace the current feed dog with a new one
having a smaller pitch.
5-D) The inclination of the feed dog
is inappropriate.
Adjust the tilt so that the front end of the feed
dog is higher than the rear end.
5-E) The parallel level of the feed
dog is inappropriate.
Replace the current feed tooth with new one.
5-F) The sewing speed is too high. Reduce the sewing speed.
5-G) Others Use a small gauge for a gap between the
throat plate groove and feed dog in the moving
direction without interference with the move-
ment of the feed dog when a feeding pitch is
small.
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