Sewing Test - Dürkopp Adler M-Type 869 Serviceanleitung

14. Sewing test

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After setup is complete, a sewing test must be carried out.
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Plug in the power supply plug.
Caution: Risk of injury !
Turn the main switch off.
The needle thread and shuttle thread must be threaded only when
the machine is turned off.
–
Thread in the winder thread (refer to the operating instructions,
chapter 6.11).
–
Turn the main switch on.
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Set the sewing feet in their raised positions (refer to operating
instructions, chapter 6.11).
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Fill up the bobbin winder at low speed.
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Turn the main switch off.
–
Thread in the needle and bobbin thread (refer to operating
instructions, chapters 6.1 and 6.6).
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Select the material to be processed.
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Carry out the sewing test – initially with a slow speed and then
continually accelerating.
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Check that the seams satisfy requirements.
If your requirements are not met, change the thread tension (refer
to the operating instructions, chapters 6.2, 6.4 and 6.7).
If necessary, the settings detailed in the service instructions
should also be checked and corrected.