DURKOPP ADLER 969 PURE, Operating Instructions Manual

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Troubleshooting
74 Operating Instructions 969 PURE - 00.0 - 04/2020
9.2 Errors in sewing process
Error Possible causes Remedial action
Unthreading
at seam
beginning Needle thread tension is
too firm Check needle thread
tension
Needle thread was cut at
the wrong time
Needle thread tension too
high during cutting

Service Instructions
Thread
breaking Needle thread and hook
thread have not been
threaded correctly Check threading path
Needle is bent or sharp-
edged Replace needle
Needle is not inserted
correctly into the needle
bar Insert the needle correctly
into the needle bar
The thread used is
unsuitable Use recommended thread
Thread tensions are too
tight for the thread used Check thread tensions
Thread-guiding parts, such
as thread tube, thread
guide or thread take-up
disk, are sharp-edged Check threading path
Throat plate, hook or
spread have been
damaged by the needle Have parts reworked by
qualified specialists