Industrial Sewing Machine SADE
122
Troubles Causes Corrective measures
6. Thread is not cut
sharply.
The blades of moving knife
and counter knife have been im-
properly adjusted.
○ Refer to "6.8. Adjusting the po-
sition of counter knife, knife
pressure and clamp pressure"
p. 64.
The knives have blunt blades.
○ Replace the moving knife and
counter knife with new ones, or cor-
rect the current ones.
Bobbin thread tension is too
low.
○ Increase the bobbin thread ten-
sion.
7. Thread remains un-
cut after thread
trimming.
(Bobbin thread trim-
ming failure when
stitch length is com-
paratively short.)
Initial position of the moving
knife has been improperly adjust-
ed.
○ Refer to the Engineer’s Manual.
Bobbin thread tension is too
low.
○ Increase the bobbin thread ten-
sion.
8. Thread breaks at the
start of sewing after
thread trimming.
The needle thread is caught in
the hook.
○ Shorten the length of thread re-
maining on the needle after thread
trimming.
Refer to "6.2. Thread tension" p.
58.
9. When a heave-
weight material is
sewn, the material
warps.
The feed amount of the top
feed is inadequate.
○ Decrease the feed dog height and
reduce the feed amount of the bot-
tom feed. (Refer to the Engineer's
Manual for the adjustment proce-
dure.)
10. Stitch skipping at
the beginning of
sewing (in the case
of starting sewing
from the material
edge)
thread fail to intertwine with each
other.
○ Refer to "5.8. Threading the ma-
chine head" p. 55
○ Retain the needle thread on the
material.
Any repairs associated with electrical equipment of the machine can only be performed
by a person with appropriate and valid license.
At start or during the sewing Sade might detect an anomaly. The nature of the fault is
indicated with a red bar in the fault column at the left side of the screen.
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