Errors In Sewing Process - DURKOPP ADLER 610-10 Service Instructions Manual

9.3 Errors in sewing process

Meaning
Thread
breakage
Missing
stitches
136
Possible causes
• The needle and looper threads
are not threaded correctly
• Needle is bent or sharp-edged
• Needle is not inserted correctly
into the needle bar
• The thread used is unsuitable
• Thread tensions are too tight for
the thread used
• Thread-guiding parts such as
thread tube, thread guide or
thread-takeup disk are
sharp-edged
• Throat plate, looper or spread
have been damaged by the
needle
• The needle and looper threads
are not threaded correctly
• Needle is blunt or bent
• Needle is not inserted correctly
into the needle bar
• The needle thickness used is
unsuitable
• The thread reel holder is installed
incorrectly
• Thread tensions are too tight
• Sewing material is not held
correctly
• The loop stroke was not
corrected when changing the
zigzag stitch width
• Incorrect parts used for the
desired sewing equipment
• Throat plate, looper or spread
have been damaged by the
needle
Remedial action
• Check threading path ( Operating
Instructions, Operation)
• Replace the needle
• Insert the needle into the needle bar
• Use recommended thread
( Operating Instructions)
• Check thread tensions
( Operating Instructions,
Operation)
• Check the thread path
• Have parts reworked by qualified
specialists
• Check threading path ( Operating
Instructions, Operation)
• Replace the needle
• Insert the needle into the needle bar
• Use recommended needle thickness

( p. 100)
• Check thread reel holder
( Operating Instructions, Setup)
• Check thread tensions
( Operating Instructions,
Operation)
• Check clamping pressure
• Set the loop stroke ( p. 22)
• Check the parts based on the
equipment sheet
• Have parts reworked by qualified
specialists
Service Instructions 610-10/630-10 - 01.0 - 12/2016
Troubleshooting