DURKOPP ADLER 969 PURE, Руководство по эксплуатации

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Operation
28 Operating Instructions 969 PURE - 00.0 - 04/2020
8. Feed the hook thread under the compression spring (7) and
to the slot (6).
9. Pull the hook thread out 100 mm to 150 mm through the
slot (6).
10. Turn the hook cover (2) back to its initial position.
11. Hold the needle thread in place and turn the handwheel until
the thread lever is at top dead center and the hook thread is
tied to the needle thread.
12. Elongate needle thread and hook thread.
13. Shorten needle thread and hook thread to 70 mm.
14. Switch on the machine.
Important
Hold both threads in place when starting to sew for the first time.
4.7 Thread tension
Together with the hook thread tension, the needle thread tension
influences the final seam pattern. With thin sewing material,
excessive thread tension can lead to undesired ruffing and
thread breaking.
Proper setting
If the tension of needle thread and hook thread is identical,
the thread interlace lies in the middle of the sewing material.
Adjust the needle thread tension so that the desired seam pattern
is achieved with the lowest possible tension.
Fig. 11: Thread tension
(1) - Identical needle thread and hook thread tension
(2) - Hook thread tension higher than needle thread tension
(3) - Needle thread tension higher than hook thread tension
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