ohmex SEW 3800 Manuel D'utilisation page 77

SEW 3800
INCONVENIENCES AND POSSIBLE SOLUTIONS
Repairs must be performed exclusively by specialized technicians and with original parts.
Repairing the appliance on your own could represent a danger for the user.
Problem
Upper thread breakage
Stitch skipped
Needle breakage
Loose stitch
Possible Cause
1. Incorrect threading.
2. Overtensioned thread.
3. Thread too thick for the
needle.
4. Needle not inserted cor-
rectly.
5. Defective coil.
6. Damaged needle.
1. Needle not inserted cor-
rectly.
2. Needle damaged.
3. Wrong needle size.
4. Improper use of the foot.
5. Wrong threading.
1. Needle not inserted cor-
rectly.
2. Needle damaged.
3. Wrong needle size.
4. Improper use of the foot.
5. Overtensioned thread.
6. Fabric pulled
"strength" during sewing.
7. Wrong threading.
1. Wrong threading;
2. Incorrect installation of
the thread coil.
3. Excessive stitch length
adjustment.
4. Overtensioned thread.
Possible solution
1. Check the threading.
2. Reduce the tension.
3. Choose a smaller thread.
4. Remove and reinsert the
needle.
5. Replace the coil.
6. Replace the needle.
1. Replace the needle and
reinsert it.
2. Replace the needle and
reinsert it.
3. Choose a needle suitable
for the thread and weft.
4. Check and correct the in-
stallation of the foot.
5. Check the threading.
1. Replace the needle and
reinsert it.
2. Replace the needle and
reinsert it.
3. Choose a needle suitable
for the thread and weft.
with 4. Check and correct the in-
stallation of the foot.
5. Reduce the tension.
6. Be careful when sewing.
7. Check the threading.
1. Check the threading.
2. Insert the coil correctly.
3. Choose the sewing nee-
dle with the right specifi-
cations.
4. Reduce the tension.
EN
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