31. Troubleshooting
Caution: Danger of injury!
Exercise utmost caution when eliminating defects with the machine
switched on.
Error description Possible cause Remedy
The display shows a message
indicating the possible cause.
The automate does not start up. Display:
Before sewing start the needle
is in front of the wrong stitch or
not in its basic upper position.
Turn the handwheel until the
information disappears.
Display:
Too low air pressure for the
pneumatic components.
- Check the air pressure at the
manometer
- Has the compressed air hose been
connected question
- Check compressed air fluctuations
- Check all compressed air hoses
and connections
Display:
Thread breakage
Activate the threading mode and
thread in the sewing automat anew.
Display:
Threading mode is active.
Deactivate the threading mode
Display:
Abnormal threading mode
Deactivate the threading mode.
Switch off/on the sewing automat.
Display:
Invalid cutting position
Check and set the control unit and
the data of the knives and cutting
blocks in use.
Skipped stitches The needle is blunt, bent or
incorrectly inserted in the
needle bar.
Insert a new needle
Insert the needle in the needle bar
correctly.
Needle and looper thread are
threaded incorrectly.
Check threading of needle and
looper thread
(See Operating Instructions)
The thread reel holder is
mounted wrongly.
Check the thread reel holder
(See Assembly Instructions)
Too tight thread tension.
Check the thread tension
(See Operating Instructions)
The fabric is incorrectly held.
Check the fabric clamping pressure
(see chapter “Fabric clamping
pressure”).
112
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