Errors In Sewing Process - DURKOPP ADLER PURE 967 Operating Instructions Manual

70
9.2

Errors in sewing process

Error Possible cause
Unthreading Needle thread tension is
at seam too firm
beginning
Needle thread was cut at
the wrong time
Needle thread tension too
high during cutting
Thread Needle thread and hook
breaking thread have not been
threaded correctly
Needle is
• bent
• sharp-edged
• not properly inserted
Yarn is
• knobby
• hard
• too thick
Thread tension is set too
firm
Thread-guiding parts are
sharp-edged
Throat plate or hook has
been damaged by the
needle
Operating Instructions 967 PURE - 00.0 - 12/2020
Troubleshooting
Remedial action
Check pretension
 Service Instructions
 Service Instructions
Check threading path of
needle thread and hook
thread
Insert new needle
Use recommended yarn
Check thread tension
Check the thread path
Have parts replaced