Errors In Sewing Process - Dürkopp Adler D887 e-con Operating Instructions Manual

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10.3 Errors in sewing process

Error Possible causes
Unthreading Needle thread pretension
at seam is too firm
beginning
Thread Needle thread and hook
breaking thread have not been
threaded correctly
Needle is bent or sharp-
edged
Needle is not inserted cor-
rectly into the needle bar
The thread used is
unsuitable
Thread tensions are too
tight for the thread used
Thread-guiding parts, such
as thread guides, are
sharp-edged
Throat plate or hook have
been damaged by the
needle
Operating Instructions D887 e-con - 00.0 - 11/2023
Troubleshooting
Corrective
Check needle thread
tension( p. 40)
Check threading path
( p. 25).
Replace the needle
( p. 22).
Insert the needle correctly
into the needle bar
( p. 22).
Use recommended thread
( p. 244).
Check thread tensions
( p. 40).
Check threading path
( p. 25).
Have parts reworked by
qualified specialists