DURKOPP ADLER 610-10 Operating Instructions Manual page 135

Troubleshooting
Meaning Possible causes
Loose stitches • Thread tensions are not adjusted to
the sewing material, the sewing
material thickness or the thread
used
• The needle and looper threads are
not threaded correctly
Needle • Needle thickness is unsuitable for
breakage the sewing material or the thread
Seam begin- • Residual tension is too tight for the
ning not secure needle thread
Operating Instructions 610-10/630-10 - 01.0 - 01/2021
Remedial action
• Check thread tensions ( p. 31)
• Check the thread path ( p. 19)
• Use recommended needle
• Adjust residual tension
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