Brother DB-2610 Manual De Instrucciones página 113

Problem
3. Thread breaks
4. Thread does not tighten, or
tightening is uneven
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•
Is the thread tension too strong?
Adjust the thread tension.
•
Is the thread being used one which breaks easily?
Reduce the sewing speed.
Adjust the thread tension so that it is as weak as possible.
•
Is the needle hole too narrow compared with the thread?
Replace the needle with a needle that is one rank thicker.
•
Is the correct kind of needle being used?
Replace with the correct kind of needle.
•
Are the needle and looper installed in the correct positions?
Adjust the height of the needle and the position of the looper.
•
Are the positions of each of the thread paths correct?
Adjust the positions of the thread paths while referring to "Adjusting
the thread tension".
•
Is the needle, looper, needle plate, presser foot needle hole or a part
of the thread path broken?
If a part is damaged, smooth it with an oiled grindstone or replace
the broken part.
•
Is the thread breaking due to heat because the needle is becoming
hot?
Use the needle thread cooler.
Reduce the sewing speed.
•
Is the position of the rear needle guard correct?
Adjust the position of the rear needle guard.
•
Is the position of the front needle guard correct?
(-0012, 0013, 00P3, 0014, 00P4, 0015 specifications)
Adjust the position of the front needle guard.
•
Is the thread of an uneven thickness?
Use good-quality thread.
•
Is the needle hole too narrow compared with the thread?
Replace the needle with a needle that is one rank thicker.
•
Do the thread tension discs operate smoothly?
Clean away any rubbish from between the thread tension discs so
that they operate smoothly.
•
Are the positions of each of the thread paths correct?
Adjust the positions of the thread paths while referring to "Adjusting
the thread tension".
•
Are the threads not running smoothly along the thread paths?
Smooth the thread paths using a fine-grade file or sandpaper.
•
Are the needle and looper installed in the correct positions?
Adjust the height of the needle and the position of the looper.
•
Is the position of the rear needle guard correct?
Adjust the position of the rear needle guard.
•
Is the position of the front needle guard correct?
(-0012, 0013, 00P3, 0014, 00P4, 0015 specifications)
Adjust the position of the front needle guard.
– 98 –
Possible cause
14. TROUBLESHOOTING
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DB-B2610