Errors In Sewing Process - Dürkopp Adler D888 e-con Operating Instructions Manual

234

10.3 Errors in sewing process

Disturbance Possible causes
Unthreading Needle thread pretension
at seam is too firm
beginning
Thread break- Needle thread and hook
ing 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
The needle has damaged
the throat plate or the hook
Operating Instructions D888 e-con - 00.0 - 12/2023
Troubleshooting
Corrective
Check needle thread
pretension ( 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. 238)
Check thread tensions
( p. 40)
Check threading path
( p. 25).
Have parts reworked by
qualified specialists